railway track IEEE PAPER
Models for railway track allocation
free download
Abstract. The optimal track allocation problem (OPTRA) is to find, in a given railway network, a conflict free set of train routes of maximum value. We study two types of integer programming formulations for this problem: a standard formulation that models block
A procedure for design and optimization of a railway track structure
free download
Abstract Traditionally, railway track design used to be conservative and thus only small changes have taken place in the last century. In the same time, many measurement, analysis and optimization techniques have been developed to understand and predict
Influences of track structure, geometry and traffic parameters on railway deterioration
free download
Abstract The roles of the several parameters that influences railway track deterioration most, are examined in this research with a view to make railway track maintenance more effective and cost efficient. The results presented are based on a comprehensive study of railway
Investigation on the accuracy of the current practices in analysis of railway track concrete sleepers
free download
Abstract: In this paper, the main factors in the analysis of the railway concrete sleepers are investigated and new recommendations are made in order to improve the accuracy of the current practices in analysis of the railway track system. First, a comprehensive literature
Effectively solving production gang scheduling problems for railway track maintenance projects
free download
Page 3. Annual RailwayTrack Maintenance PlanningUS Rail transportation120,154 route miles$54.6 billion in annual revenueSuccessfully applied the proposed model and methods to annual railwaytrack maintenance planning in a major railway company.
The development of a rail damping device for reducing noise from railway track
free download
ABSTRACT The component of railway rolling noise radiated by the track dominates in the frequency range up to about 1.5 kHz and often can be more important than the wheel component for the overall noise level. A promising means to reduce the track noise is to
Benefit-Cost Analysis of Heavy Haul Railway Track Upgrade for Safety and Efficiency
free download
Summary: Upgrading track quality offers potential safety and service quality benefits because it can reduce both derailment rate and transportation time. However track upgrades are costly and increase capital and operating expense for upgrade and maintenance. A
Ground-penetrating radar evaluation of railway track substructure conditions
free download
ABSTRACT Ground penetrating radar has shown the ability to map rail road track substructure condition on a continuous top-of-rail non destructive basis. In this study, 1 GHz radar data were acquired between concrete and wood ties as well as from the ballast
Assessment of railway track substructure condition using ground penetrating radar
free download
ABSTRACT Ground penetrating radar (GPR) has been employed to assess railway track substructure (ballast, subballast, and subgrade) conditions. GPR involves transmitting radar pulses into the substructure and measuring return signals that have reflected off
Railway track transmission line parameters from finite element field modelling: Series impedance
free download
Abstract: An electromagnetic field model for identification of rail track equivalent multi conductor transmission line distributed self and mutual series impedances is formulated, and used to illustrate the parametric behaviour of single track impedance with
Influence of railway track stiffness variations on wheel/rail contact force
free download
INFLUENCE OF RAILWAYTRACK STIFFNESS VARIATIONS ON WHEEL/RAIL
Dynamic behaviour of railway track
free download
In 1995, the Faculty of Civil Engineering of TU Delft completed a study on the behaviour of'Paved-in light rail track constructions . Apart from investigating the different construction types, in-track measurements of quasi-static deflections under passing vehicles were
Development of a machine-vision system for inspection of railway track components
free download
ABSTRACT North American Railways and the United States Department of Transportation (US DOT) Federal Railroad Administration (FRA) require periodic inspection of railway infrastructure to ensure the safety of railway operation. This inspection is a critical, but
DYNATRACK: A survey of dynamic railway track properties and their quality
free download
Railway track settlements-a literature review
free download
This report has been written as part of the BriteEuram project SUPERTRACK (Sustained performance of railway tracks) The project started in
Condition monitoring of railway track using in-service vehicle
free download
Condition monitoring of railway tracks, vehicles are essential in ensuring the safety of railwaysIn the field of road traffic, research is proceeding to acquire detailed traffic flow information and reflect it in traffic control by
Dynamic simulation of tram-train vehicles on railway track
free download
train systems carry out the integration of an urban tramway with the surrounding railway network, by means of light rail vehicles often provided with special wheel profiles in order to fit both grooved and flat-bottomed rails. This paper aims to
Field investigation on vibration behavior of railway track systems
free download
Abstract: Investigations on vibration behaviors of railway track systems were attempted in this research. This was made by conducting a comprehensive field investigation into the free vibration of track systems and response of tracks to train moving loads. In-situ modal
Wheel-rail profiles matching design considering railway track parameters
free download
Abstract: The profile of wheel/rail has great concern with the vehicle running safety, the wheel/rail wear and the rolling contact fatigue between wheel and rail, due to its severer impact on the dynamic behavior of both the railway vehicle/track, and the wheel/rail rolling
Behaviour of a portion of railway track under maintenance operation
free download
Abstract The track deterioration rate is strongly influenced by the ballast behaviour under traffic. In order to restore the initial track geometry, different maintenance processes are performed, like tamping, dynamic stabilisation. A better understanding of the ballast
Integrated numerical and experimental research of railway track structures
free download
SUMMARY For the analysis of rail track structures a procedure is proposed where experimental data are processed directly by numerical models of real sized rail track structures. For the design of new rail track structures and the evaluation of existing track
Assessment and improvement of railway track safety
free download
Summary: In this paper, an approach has been developed to assess safety of the railway track by estimating the probability of derailment. Models for probability of derailment are developed based on undetected rail breaks and poor track quality using Petri-Nets and
Lateral resistance of railway track
free download
Increasing the speed limit of railway tracks is applicable by welding rail joints and employing Continues Welded Rails (CWR). Unfortunately, there are large numbers of curves with the radius less than 400 m in the most conventional railway tracks. Field investigations show
Computer application for railway track realignment
free download
Abstract The topic of this article is the issue of railway track realignment. For this purpose, a computer software application was created that supports computations and generates a report needed for regulation of the trajectory of the railway. This program gives the ability
Innovative railway track surveying with sensors and controlled by wireless communication
free download
Abstract Micro Electro Mechanical Switch (MEMS) are small integrated devices or systems that combine electrical and mechanical components. This sensors are used by many engineering disciplines because of their high-precision characteristics. In addition, Global
On Vertical Analysis of Railway Track Vibrations
free download
The paper herein presents a vertical vibration analysis of the ballasted track using a new model of the periodic support of the rail that improves the prediction of the rail response for both low and high frequencies. The model of the periodic support consists of two three-
Three-dimensional dynamic models of a railway track for high-speed trains
free download
Modem means of railway transportation in Western Europe are being currently developed to further reduce the travelling time for passengers. Cruise velocities of such high-speed trains etc. are nowadays in the range of 200-300
Train-induced Dynamic Response of Railway Track and Embankments on Soft Peaty Foundations.
free download
Abstract The mainline railway track between Dublin and Belfast in Northern Ireland was constructed during the 1850's. Substantial lengths of railway embankment were constructed over poor-quality peaty soils. This was accomplished using tree trunk fascines placed
Developing a Cost-Effective Renewal Strategy for Railway Track on Conventional Networks
free download
Summary Due to increasing budget pressures, operational restrictions and the restructuring of the European railways, the life cycle costing '(LCC) concept gets more and more attention: the Infrastructure Manager (IM) can use LCC to systematically underpin and
Solving single-track railway scheduling problem using constraint programming
free download
A job-shop scheduling model for the single-track railway scheduling problem
free download
Abstract The Single-Track Railway Scheduling Problem can be modelled as a special case of the Job-Shop Scheduling Problem. This can be achieved by considering the train trips as jobs, which will be scheduled on tracks regarded as resources. A train trip may have many
'Investigation on modeling of railway track system
free download
Today's most important need in the engiNeering is to improve trackof railway ity, strength and stability as well as increasing efficiency, especially for clavier axle loads and higher speeds. This goal can be achieved by providing a better understanding of the static
Investigation on the effect of railway track support system characteristics on the values oftrack modulus
free download
Abstract In this research, the variation of railway track modulus as a function of ballast layer thickness and subgrade characteristics is investigated using numerical modeling. Track modulus plays an essential role in the analysis of railway track systems and is regarded
Some results of performance indicators of a railway track obtained during its renewal process
free download
ABSTRACT In the scope of the modernization of the old railways, particularly when it is necessary to make the renewal of the platform, it is important to have performance indicators of the railway track that permit to evaluate its quality, to design the set of works to be done
Design of Double Railway Track on AuGeo Piling System
free download
ABSTRACT This paper describes a preliminary design of the piled embankment according the AuGeo-method for sections of the proposed double railway track. The railway has to be extended to two tracks. Some sections of the second track will be located
Innovations in Railway Track
free download
Renewal is an integral part of existence itself, a rule to which railway infrastructure is no exception. Yet renewal goes beyond simply replacing worn-out track and components. Renewal involves keeping abreast of developments, both at home and abroad, becoming
Influences of rail support conditions on mechanical behavior of railway track system
free download
ABSTRACT All components of the track suffer from a variation in the performance during their lifetime to a different degree. These variations include replacement of timber sleepers with concrete sleepers and changes in the ballast conditions due to tamping or track
Multicriteria Optimisation of Railway Track for High-Speed Lines
free download
ABSTRACT The paper presents results of multicriteria optimum design of an embedded rail structure (ERS). The optimality criteria are based on the requirements to railway tracks related to cost efficiency of the design, minimum noise emission and minimum wear of
Influence of ground impedance on the sound radiation of a railway track
free download
Railway rolling noise is radiated by the vibration of the rail and wheel. The TWINS model is well established as a method of predicting the generation of vibration and noise and this has been used successfully to design noise mitigation measures. However, the existing model
Railroad vehicle modelling in probabilistic vibration analysis of a railway bridge with randomly fluctuating track ballast stiffness
free download
ABSTRACT: The paper presents an efficient method for analysing an influence of random changes in ballast stiffness on railway bridge vibrations caused by a train passage. Three different types of train model are taken into account: a sequence of moving forces, a set of
Lumped mass model of vertical dynamic coupling of a railway track on elastic homogeneous or layered halfspace
free download
ABSTRACT: The mechanical model of track and foundation is presented in this paper, considering a lumped mass model for the soil. From the Lysmer Analog model, widely used for soil impedance characterisation, an extension is proposed considering the coupling
A study of the track degradation process related to changes in railway traffic
free download
Several ideas have been thought in the area of railway technology. These include thought both by elderly men in grey hair and by youngsters with little or no experience but with a fresh and unrestricted mind. This is a statement based on observations at several railway
System analysis of train operations and track occupancy at railway stations
free download
A system analysis approach is presented for investigation of train operations in railway stations based on network, timetable and train detection data. The estimated blocking times, buffer times and track occupancies are compared with real operations data recorded
An insertion loss model for evaluating the performance of floating-slab track for under ground railway tunnels
free download
Abstract This paper discusses a comprehensive three-dimensional model of a deep underground railway tunnel. The model consists of Euler-Bernoulli beams to account for the rails and the slab track. These are coupled to an infinite continuum (pipe-inpipe) model,
Prediction of Permanent Deformation in Railway Track
free download
ABSTRACT This research investigated the deformation behaviour of railway ballast, particularly the vertical settlements under repeated traffic loading. Experiments were conducted to study ballast deformation and particle breakage under different confining
Analyzing the incremental transition from single to double track railway lines
free download
Abstract Long term demand for rail freight transportation in North America is projected to increase considerably in the coming decades. Additionally, government agencies want to increase the speed and frequency of passenger trains operating on certain freight lines,
Damage Detection of Railway Track by Sensor Using Advanced RISC Machine
free download
Abstract-Ultrasonic distance measuring sensors are widely used in many industrial establishments and particularly in the metrology area. These sensors are used in many engineering disciplines because of their highprecision Characteristics of different methods
Computer aided design of railway track
free download
Despite many years of operating experience the design of railway track is a semi-empirical exercise based largely on the engineering experience of the designer. This is due mainly to a lack of understanding of the various components which constitute a railway track system
Buckling Stability of Railway Track in Earthquake
free download
SUMMARY It has been reported so far that large lateral deformations were caused in railway track in time of earthquake even when the roadbed did not show any obvious damages. These has been considered a problem of stability of track to longitudinal force in
Feasibility of EPS as a lightweight sub-base material in railway track structures
free download
Abstract The paper presents results of a study on feasibility of Expanded Polystyrene (EPS) material in a railway track design. In this research, performance of a track structure without ballast, a so-called Embedded Rail Structure (ERS), with an EPS layer between a
Use of Nelder-Mead simplex method to arc fitting for railway track realignment
free download
Abstract The development of technology implies the elaboration of new calculation methods. Such methods should be precise and efficient. The article presents a new method of railway track realignment. The example considered in the article consists of an circular arc that is
Some computer aided design studies of cane railway track
free download
Cane railway track has usually been constructed without the aid of formal design studies. Pierce and Murry (1981) reviewed the application of the rail track design package produced by the Bureau of Transport Economics (BTE) and discussed its possible application to
Validation of a reduced model of railway track allowing long 3D dynamic calculation of train-track interaction
free download
ABSTRACT: In order to face challenges of increased traffic and speed on their infrastructures, railway companies need to develop numerical tools able to predict the dynamic behaviour of the track. Currently, two approaches are widely used: the first one is
Modeling of work of a railway track at the dynamic effects of a wheel pair
free download
Abstract:This paper is concerned with the modeling of the behavior of railway tracks under a dynamic load of wheel set taking into account the elastic, viscous-elastic and elastic- plastic properties of the interaction region between two solid bodies and elastic
Improving the safety of the railway track infrastructure using insitu polyurethane geocomposites
free download
ABSTRACT There are many issues related to the safety of the railway track infrastructure, such as tolerance issues in stations and tunnels, poor track formations, critical track velocity effects for high-speed lines (both subseismic and transeismic regimes), voiding at rail
Numerical modeling of railway track supporting system using finite infinite and thin layer elements
free download
Abstract The present contribution deals with the numerical modeling of railway track- supporting systems-using coupled finite-infinite elements-to represent the near and distant field stress distribution, and also employing a thin layer interface element to account for
Field and laboratory procedures for investigating the fouling process within railway trackballast
free download
ABSTRACT This project details the field and laboratory methods designed and employed to investigate railway track fouling near Joliette, QC. A field trenching methodology was developed to obtain samples at specific locations within the rail embankment. During the
Redundantly engineered points (REPOINT) for enhanced reliability and capacity of railway track switching
free download
Abstract:Points on railway networks enable different routes through the network to be achieved, thereby allowing rail-transport links between many different destinations. However, they are critical parts of the network as a points failure often leads to delays, re-
Actions on a Railway Track, due to an Isolated Defect
free download
Abstract The rail running table imposes to the vehicle a forced vibration. It is not smooth but instead it comprises a lot of faults that give to the rail running table a random surface. Furthermore under the primary suspension there are the Unsprung Masses which act
Railway track geometry defect modeling: deterioration, derailment risk and optimal repair
free download
Analyzing track geometry defects is critical for safe and effective railway transportation. Repairing the 2 right number and type of track geo-defects can appropriately reduce the probability of derailments. 3 Additionally, prioritized track geometry repair work reduces
Interactions between multiple moving wheels and a railway track
free download
ABSTRACT In this paper an approach is presented for the wheel/rail interactions generated by multiple wheels moving along a railway track which is an infinitely long periodic structure. This 'moving wheel approach utilises the wave number based method of calculation for
Design of double track railway Bidor-Rawang on AuGeo Piling System according to BS8006 and PLAXIS numerical analysis
free download
ABSTRACT This paper describes the design of a piled embankment constructed according to the AuGeo-method for sections of the proposed double railway track The railway has to be extended to two tracks. Some sections of the second track will be
Prediction of ground vibrations induced by urban railway traffic: an analysis of the coupling assumptions between vehicle, track, soil, and buildings
free download
This paper is concerned with the problem of ground vibrations induced by railway traffic and its modelling through a decoupled approach, using only the finite element modelling for evaluating the ground waves propagation. The vehicle/track dynamics is calculated
Job-shop Problems with Objectives Appropriate for Train Scheduling in a Single-track Railway.
free download
Abstract: A train scheduling problem in a single-track railway is studied using a mixed graph model for a job-shop with appropriate criteria. There are several performance evaluations for a train schedule. Optimizing a train schedule subtends minimizing total tardiness of the
Shifting bottleneck algorithm for train scheduling in a single-track railway
free download
Abstract: A problem of train timetabling for a single-track railway is studied using a disjunctive graph model for the corresponding job-shop. The objective is to minimize the total weighted tardiness of the given trains. A shifting bottleneck algorithm is developed
Three Dimensional Finite Element Analysis of Railway Track
free download
ABSTRACT A ballast and a subballast layer placed above a compacted subgrade (formation soil) is the conventional structure of a railway track system. Upgrading the tracks with the current traffic condition requires the new design methodologies and the parametric studies
GPS Based Railway Track Survey System
free download
Abstract:Now a days due to natural disaster like floods, earthquake, cyclone, etc. there are many accidents are occurring in Railways due to cracks in the rails. System have some limitations and delay in delivering the signals, if the bridges or track got damaged, the
Dynamics of railway track
free download
Abstract The classic and reinforced railway track is composed of two infinite rails separated from sleepers by visco-elastic pads. There are numerous assumptions leading to different simplifications in railway track modelling. The rails are modelled as infinite Timoshenko
Integrated solutions for calculus of electromagnetic perturbation of railway track with real traffic conditions
free download
Abstract:A new calculation method to estimate the interference current of an electrified railway network is presented and discussed. This program takes into account two intertwined needs: the correct assessment of electromagnetic (EM) perturbation and the
Numerical simulation of the vertical interaction between railway vehicle and track
free download
], concerning the vertical interaction between railway vehicle and track, where random irregularities of track vertical profile are considered. A Matlab/Simulink simulator has been developed to simulate the
Theoretical Traffic Loads and Classification of Turkish Railway Network according to theTrack Maintenance
free download
Various kinds of rail vehicles are running on a railway track such as; passenger vehicles, freight vehicles, mainline locomotives, shunting engines. The algebraic sum of the vehicle loads cannot give an accurate picture of the running load, because it does not take into
Effects of rail fastening on railway track noise
free download
ABSTRACT This paper describes measurements of deflection, vibration, and noise on three different track forms. The measurements were carried out as part of the Silent Track European project on railway noise at the Velim test centre in the Czech Republic in May
The effect of railpad nonlinearity on the dynamic behaviour of railway track
free download
Railway tracks are commonly constructed with railpads that attenuate the level of vibration and impact transmitted to them from railway vehicles. The stiffness and damping properties of railpads have significant effects on track vibration and forces transmitted to the track
50 Hz track circuits parallel to a 25 kV 50 Hz railway line
free download
Abstract In the port of Rotterdam a new freight line, the so-calledHavenspoorlijnis built partly alongside an existing DC subway line. This freight line will be equipped with a 25 kV 50 Hz power supply. The signalling system of the subway uses
Modelling of ground vibrations in the vicinity of a tangent railway track
free download
This paper presents a numerical prediction model that allows investigating the wave propagation in horizontally layered soils, in the vicinity of typical urban track systems. The two substructures, ie the track system and the soil is modelled separately, using a
Vibration of the railway track-viaduct system under moving vehicles taking into account the interaction effect
free download
Abstract The main purpose of this paper is to investigate the influence of the interaction on the dynamic behaviour of a simply supported single span railway concrete viaduct for which measurement results are available, taking into account the railway track. We compare the
Stress on Ballast-Bed and Deterioration of Geometry in a Railway Track
free download
Abstract: In Greece extended cracking of twin-block concrete sleepers (ties) and fouling of the ballast-bed were observed with implied problems of gauge widening and deterioration of track's geometry. This led to a ten-year investigation program, during which a new method
New advances in analysis and design of railway track system
free download
A ballasted railway track system comprises several components among which steel rails, rail fasteners, timber, steel or concrete sleepers, granular ballast, sub-ballast, and subgrade materials are the main parts. Railway track systems are constructed to provide a smooth
Holes, Antiholes, and Maximal Cliques in a Railway Model for a Single Track
free download
Abstract We present a graph theoretical model for scheduling trains on a single unidirectional track between two stations. The set of departures of all possible train types at all possible (discrete) points of time is turned into an undirected graph G by joining two
RAMS analysis of railway track infrastructure
free download
ABSTRACT Railway infrastructures are assets which represent a high investment. They are designed to work in very demanding safety conditions and must display a very low occurrence of failures. Rail tracks are components which are subject to the development
A numerical program for railway vehicle-track-structure dynamic interaction using a modal substructuring approach
free download
Summary This thesis work proposes a method for the simulation of the dynamic interaction between vehicle and railway track. The model has been designed to take into account the
Degradation of Railway Ballast Through Large Scale Triaxial and Full Scale Rail Track Model Tests: Comparison with Mechanical Laboratory Tests
free download
ABSTRACT: The aim of the research was to assess if the standard tests provided a reliable ranking of nine ballast aggregate materials with respect to mechanical strength. Standard tests were compared with the results from large scale triaxial and full scale model tests
Dynamic analysis of pitch plane Railway vehicle-track interactions due to wheel flat
free download
ABSTRACT With demands for increased load and speed, the issue of wheel flats and a strategy for in-time maintenance and replacement of defective wheels has become an important concern for heavy haul operators. In this study, an analytical model of the
Mitigation of railway induced vibrations by using heavy masses next to the track
free download
ABSTRACT: The effectiveness of heavy masses next to the track to reduce railway induced vibration is discussed. These heavy masses next to the track could be built as a gabion wall also used as noise barriers or as a concrete wall. Since the performance of mitigation
European standardisation related to railway noise emission: New standards to assess the reference track performances
free download
Limits on the emission of noise from railway vehicles are required in the context of the of EU directives on the interoperability of the trans-European high-speed rail and conventional rail systems. The technical requirements for this are specified in the Technical Specifications
Inefficient, unprofitable, but still on the track! An exploration of why the Swiss have hardly dismantled their railway system
free download
Abstract In the course of the 20 th century the Swiss railway industry, which has to be considered an anomaly because of its division into a state sector and a so-called private one, got into financial difficulties, as did the railways in other countries. Almost all
Flexible Track Models in Railway Dynamics Using a Finite Element Formulation
free download
Abstract The dynamic analysis of railway vehicles involves the construction of three independent models: the vehicle model; the track model; and the wheel-rail contact model. In this paper, a finite element methodology is proposed to create detailed three-
The influence of the track on railway induced ground vibration
free download
A combined boundary finite element method had been developed to calculate the vibrations of different flexible or rigid structures on the soil . Railway tracks have been thoroughly investigated by this method. It is shown what are the effects of additional
Analysis of the Vehicle-Track-Structure-Soil Dynamic Interaction of Railway Bridges for HST
free download
Abstract. The dynamic vehicle-track-bridge-soil interaction is studied on high speed lines. The analysis is carried out using a general and fully three dimensional multi-body-finite element boundary element model, formulated in the time domain to predict vibrations due
Track decay rate of different railway noise test sites
free download
For noise type testing of rolling stock the vehicle shall contribute mainly to total pass-by noise. As a consequence a test track is needed, which radiate only little noise. There is an intensive discussion in the scientific community how to specify a low radiating test track. In
Innovative Railway Track Surveying With Sensors and Controlled By Wireless Communication
free download
Abstract Micro Electro Mechanical Switch (MEMS) are small integrated devices or systems that combine electrical and mechanical components. These sensors are used by many engineering disciplines because of their high-precision characteristics. In addition, Global
Railway Vehicle Modelling on an Isolated Track Defect of a Cosine Form
free download
Abstract:-During the motion of a railway vehicle on a rail, with a rail running table/surface of a random form, the rail running table imposes to the vehicle a forced oscillation. Due to different reasons manufacturing, corrosion, deterioration etc.-the rail's running surface is
RAILWAY TRACK CRACK DETECTION AUTONOMOUS VEHICLE
free download
Abstract: India has one of the world's largest railway networks, manual Inspection and detecting a crack on these railways tracks is very tedious process and consumes lot of time and human resource. The project aims in designing railway track crack detection
ADVANCED RAILWAY SECURITY SYSTEM (ARSS) BASED ON ZIGBEE COMMUNICATION FOR TRACK FAULT DETECTION
free download
ABSTRACT: The main aim of this paper is to develop an embedded system to identifying rail track fault sending message to near station using ZIGBEE TECHNOLOGY. The Transportation of train always depends on railway tracks (rails) only. If there is a crack in these rails, it
FEM Based Improvement of CAD for Non-Conventional Railway Track
free download
Implementation of new modelling methods for railway tracks in both cases the ballasted track and the slab track requires various experiments, including numerical analysis being a basis for further design. Designing of the railway track needs a consideration of a large Summary Track dynamic behaviour is important for the prediction of the rolling noise, corrugation growth and track damage. Various models have been developed in the literature but problems still remain. On the one hand, analytical models become insufficient
Automatic Railway Track Crack Detection using GSMGPS
free download
Abstract: In India rail transport occupies a prominent position in providing the necessary transport infrastructure to sustain needs of a rapidly growing economy. Today, India possesses the fourth largest railway network in the world. However, in terms of the
Robust Railway Track Crack Detection using MEMS Technology
free download
Abstract In India, most of the commercial transport is being carried out by the railway network and therefore, any problems in the same has the capacity to induce major damage to the economy notwithstanding the societal impact of loss of life or limb. Economic prosperity
railway track health monitoring system
Railway track structural health monitoring system
free download
Abstract: Railway is one of the most used means of transportation. For the railway system to operate flawlessly constant monitoring and inspection of railway tracks is required. Currently railway track inspection and monitoring is done manually which is time taking and not
Structural Health Monitoring in the Railway Field by Fiber-Optic Sensors
free download
A fiber-optic distributed sensor has been employed for integrated monitoring of railway infrastructuresThe results indicate that, gluing an optical fiber along the railtrack, running conditionsFurthermore, dynamic strain measurements on a rail bridge have been reported, aimed
Long-term structural health monitoring system for a high-speed railway bridge structure
free download
supports a six-line railway, including two regular rails, two high-speed railways, and tworeason of train derailment is that the transverse vibration of the train-railway-bridge system the transverse and vertical vibration characteristics of two main spans due to the rail irregularity in [HTML]
Evaluation of High-Speed Railway Bridges Based on a Nondestructive Monitoring System
free download
1a, is a composite steel box girder bridge with 50 m span supports two line high-speed railways. the vertical vibration characteristics of two sides of the bridge due to the rail irregularity in measurements can be used to detect the performance of high-speed railway bridges based tested on a variety of color video-sequences taken from the point of view of trains moving along railwaystracks.of various infrastructures, such as rail longitudinal stress detection, rail displacement and crawling detection, rail integrity and railway embankment settlement Therefore, one can conclude that the variability introduced by the hammer test procedure in railway tracks is negligible if the verticalSecond, the rail should be excited at the middle of the rail head, as close as possible to the4. FRF-based statistical method applied to railways.
Perspectives on railway track geometry condition monitoring from in-service railwayvehicles
free download
Measurement and analysis of train motion and railway track characteristics with inertialThis provided vertical left and right rail geometry that could be mutually aligned and compared.Inspection of track from in-service freight trains
Monitoring bolt tightness of rail joints using axle box acceleration measurements
free download
30kHz, and a sensitivity of 50mV/g. The accelerometer chosen is suitable for railway application as a system to other types of damage at RJs, such as cracks in the rail web, IRJsfound in many networks worldwide, and broad range of speed, from metros to conventional railways.
Railway infrastructure damage detection using wavelet transformed acceleration response of traversing vehicle
free download
GPS) should lead to an up to date state report of the existing railway networkMost of the existing literature analyse urban railways, at lower speeds, and small radius curvesproposes a wavelet-based automatic assessment methodology that can be implemented on rail networks frequency diversity (FD) using modified sensors to monitor an underground railway tunnel where thesections analyze existing WSNs for condition monitoring on the railways and conducts health monitoring of infrastructure, including rail bridges, tunnels, railtracks and track
Modeling on energy harvesting from a railway system using piezoelectric transducers
free download
such as running velocity, location and axle load) and the health status of tracks, bridges andto moving multi-loads is adopted to describe the dynamic behavior of railway track structure.electric power of piezoelectric transducers installed at the bottom of a steel rail are derived
The detection of wheel-flats based on fiber optic Bragg grating array
free download
installed on each side of a rail to detect imbalances on the two sides of rail wheels.the left and right rails at low cost to measure the important parameters for the railway engineer in12 encapsulated sensors are welded attach to the bottom surface of the track on both sides, and
Drive-by structural health monitoring of railway bridges using train mounted accelerometers
free download
In this study, the acceleration response of a railway vehicle is generated using a validated finite The authors are in the process of acquiring accelerometers to attach to an Irish Rail train vehicle responses of a vehicle can be obtained while it traverses a section of track featuring a
Improvements in axle box acceleration measurements for the detection of light squats in railway infrastructure
free download
Japanese high- speed railways [23]Squats may cause rail fracture and catastrophic consequences if not treated in time.the nonparametric response function ( ) T x H f which is given by the wavelet power spectrum in the frequency domain f. The railway tracksystem is shown
Traffic deduction exploring sensor data's intra-correlations in train track monitoring WSN
free download
to examine the transmission performance when the Wi-SUN sensors are placed near the real railwaytrack.and West), and the train travels between the two terminals on the track as illustrated Wireless sensor nodes are placed along the train tracks to help monitor the train track
STIM: smart train infrastructure monitoring
free download
3. DEPLOYMENT We have deployed our system on Pittsburgh's Light RailSystem, and have been collecting data for more2. The signals before and after tamping are similar in most parts of the track, except whereStructural healthmonitoring in the railway industry: a review.
Development of a long-term, multimetric structural health monitoring system for a historic steel truss swing bridge
free download
Structural healthmonitoring is intended to supplementnot replacevisual bridge inspec- tion byHowever, AREMA (American Railway Engineering and Maintenance-of-Way Associa- tion) has preparedbridge inspection are equally valid for the inspection of rail- road bridges
Severity and growth evaluation of rail corrugations on sharp curves using wheel/railinteraction
free download
Analysis of influence factors in rail corrugation on sharp curve of metro, Railway Standard Design, 2013-08, 2013.The city rail safety detection sensor network platform using online track detection, in Lecture Notes in Electrical Engineering, [HTML]
Using wireless sensor networks and trains as data mules to monitor slab trackinfrastructures
free download
The sensors deployed in the railways make use of the IEEE 802.15.4 [17] protocol Railway infrastructures cover really large areas, possibly in places where there is no Internet coverage frequency pair) that correspond to the main frequencies at which the slab track vibrates and
Rail vehicle and rail track monitoring system a key part in transport sustainable development
free download
out the world are suffering,the large area of land for the construction of roads, railways, airports andIn case of high-speed rail vehicles, it is ex- tremely important to monitor axle bearing Railway vehicle suspension deter- mines significantly riding dynamics, safety and comfort.
Harvesting energy from the vibration of a passing train using a single-degree-of-freedom oscillator
free download
cycle, the result would be that a relatively long initial transient would occur before the system reaches itsSuch energy could be used to power or recharge batteries of rail-side equipment, such as wireless sensors for monitoring railway track health and temperature [HTML]
Sensor4PRI: A sensor platform for the protection of railway infrastructures
free download
In general, the majority of the proposals present a WSN architecture to monitor the infrastructure (railways, bridges, etc Railway Standard.CENELEC 50128: Rail applications Communications, signaling and processing systems Safety related electronic systems for signaling.
The Long-Term Settlement Deformation Automatic Monitoring System for the Chinese High-Speed Railway
free download
security operations and important infrastructure systems, such as the high-speed railways, are discreteapplication of optical fiber sensing technology to monitor the status of railsystems has become aand track slab structures, bridge tunnels, the side slopes of railway lines, and
Real-time monitoring of railway infrastructures using fibre Bragg grating sensors
free download
Even if the technology is well consolidated, it is not very efficient for railways, since it isalong the line 2 of the subway of Milan, near a heavily used suburban railway line with system, a dedicated statistical algorithm permits to isolate the single contributions of the rail and the When these methods are applied to a railway axle however, significant additional issues need to be addressed, mainly because railway axles are rotating at speeds well belowFurthermore, heavy disturbance caused by wheel rail contact in presence of track irregularity and
A study of railway wheel profile parameters used as indicators of an increased risk of wheel defects
free download
5. International Union of Railways. Atlas of wheel and rail defects. Paris: International Union of Railways,Guidelines to best practices for heavy haul railway operations: infra- structure construction and maintenance issues. University College London, Gower Street, London WC1E 6BT, UK 2 Network Rail, James Forbes The new development will comprise of 9 through and 6 terminating tracks as well asto be monitored continuously throughout the project, in particular the railway track and arches.
Rail squats: understand its causes, severity, and non-destructive evaluation techniques
free download
[2] M. Ishida. "Rolling contact fatigue (RCF) defect of rails in Japanese railways and its mitigation strategies," Electronic Journal of Structural Engineering, 13(1), 67-74, 2013.Wheel/rail conditions and squatA review on loading conditions for railway track structures due to train
Nonlinear finite element modelling of railway turnout system considering bearer/sleeper-ballast interaction
free download
The British Railways Boardexpressed that the permissible track forces in a low frequency rangeMonitoring structural deterioration of railway turnout systems via dynamic wheel/rail interaction, Case
Diagnostic of flexural damage on railway prestressed concrete sleepers using dynamic modal responses
free download
prestressed concrete sleepers are often hidden from visual inspections during trackmonitoring and maintenanceforce incurs coincide with unstable two point contacts between wheel and rail. tool for structural health of prestressed concrete sleepers in railwaytracks using the Field measurement and structural health monitoring (SHM) have been recognized as effective tools for bridge stress acquisitionThe bridge, carrying a single railtrack and crossing the Nanpai River, is located on the Shuo-Huang Railway Line in Metrovalencia operates the commuter services in the metropolitan area of Valencia (Spain) connected by a narrow gauge railway network, ie 1,000 mm.Table 4. Different features for both track configurations.Rails, UIC-54, UIC-54. Rail mass per unit length, m, 54 kg/m, 54 kg/m.
A Combined Structural Health Monitoring and Weigh-in-Motion System for Railway Bridges
free download
A vast number of bridges which are critical to the efficiency of road and rail transport networks areInitial results for the railway B-WIM system showed that one of the four trains of knownThis approach may be feasible by using test trains on a track periodically to check for damage
Maintenance decision indicators for treating squats in railway infrastructures
free download
Understanding the crack evolution process is critical to ensure safe and cost-efficient railway operation.A rail-grinding program is a critical component of profile optimisation in any rail maintenance programDutch railways typically have a cyclic grinding regime. data, which is in general difficult to obtain [5]. Especially for our application in railways, due to it is not realistic to assume that this will be realized for the whole rail infrastructure, asthe receiver, which is, in the Netherlands, already measured for a large number of railway sections
Long-term monitoring and analysis of hanger vibration of a high-speed railway steel truss arch bridge
free download
2). Its 336m main span and 6-track railways rank itself the largest bridge with2006), Field testing and simulation of dynamic properties of a tied arch railway bridge, EngineeringAssessment of Bridge Deck using Long-Term Monitoring Data, Structural HealthMonitoring 2013, 1
Mitigating the effects of variable speed on drive-by infrastructure monitoring
free download
more cost effective approach to monitor the health of bridges, roads, or tracks in a railway is through theations on we placed railtrack the track changes simulated with a wire, only aligned features showed significant success (~80%) at classifying minor track changes simulated [HTML]
Early-Warning Method of Train Running Safety of a High-Speed Railway Bridge Based on Transverse Vibration Monitoring
free download
With its 336 m main span and 6-trackrailways it ranks itself the largest bridge withtrains at the same speed varied much, mainly because of the various wheel-rail contact states of(1) When high-speed trains passed by, the transverse vibration of the train-railway-bridge system
Model updating of railway bridge using in situ dynamic displacement measurement under trainloads
free download
In this study, the dynamic response of the railway bridge in the vertical direction is considered without theThe elasticity and damping properties of the rail bed are represented by a series of springsThe track on the embankment is modeled as a beam on a viscoelastic foundation
Monitoring vertical wheel rail contact forces based on freight wagon inverse modelling
free download
An algorithm for railtrackhealth assessment is formulated as an inverse identification problem of dynamic parameters of the rail vehicle system. Track irregularities are identified using this procedure. 14. Monitoring the WR dynamic forces is very important for railway operations.
Real-time signal processing of guided waves acquired on high-speed trains for health monitoring of bogie systems
free download
responses under several working conditions (eg, startup, acceleration, full-speed operation, track change, emergencyGao, X. In-motion ultrasonic testing of the tread of high- speed railway wheels usingUltrasonic and eddy-current inspection of rail wheels and wheel set axles
Longitudinal force measurement in continuous welded rail with bi-directional FBG strain sensors
free download
In contrast, FBG sensor is increasingly favored in railway application for its ability of anti-electromagnetic interference, highTam et al, Yuen et al, Lai et al performed real-time monitoring on track and vehicle based on the relationship between rail deformation and rail 234 (2007) [3] Kaewunruen, S., Remennikov, AM: Dynamic flexural influence on a railway concrete sleeperD., de Vos, P. (eds.) Noise and Vibration Mitigation for Rail Transportation Systems. Technical Report TR162, RailCorpTrack Engineering, Sydney NSW, 14 p. (2009) [6
Stress Influence Line Identification of Long Suspension Bridges Installed with StructuralHealth Monitoring Systems
free download
exist in stress responses, and such fluctuation mainly result from the dynamic im- pact factor, rail irregularity orTherefore, the railway loading of this train can be represented by 16 vertical forces, with each representing oneArrival time 7 November 2005 at 5:46:37 am Track no. damage to DNA, and the inhibition of the immune system caused by PM [6] and [7]. Public health related studies Monitoring method.the deepest, resulting in the accumulation of coarse particles generated by the mechanical frictions between the wheels and rail-tracks and brake
1508. On-line monitoring of vertical long wavelength track irregularities using bogie pitch rate.
free download
13] designed an on board track fault diagnosis device for advanced railway condition monitoring. also contains ingredients such as rolling bearing fault, wheel tread fault, wheel and rail out of When the train passes through short track defects like squats, welds with poor finishing
Global Sensitivity Analysis applied to Model Inversion Problems: A Contribution to RailCondition Monitoring
free download
important RAMS-killers and the track geometry as well as rail head quality as the most important cost drivers (International Union of Railways (UIC), 2010).The task of a modern railway condition monitoring is therefore to provide a sufficient data base of reliable condition
real time railway monitoring system
Real time monitoring of railway traffic using fiber Bragg grating sensors
free download
Spain in the TransEuropean high speed network, connecting with French railways through its presented a preliminary study on the use of FBG sensors for monitoring railway footprints ofthere is a consistence between the signals recorded and the wheel-rail interactions under
Survey of wireless communications applications in the railway industry
free download
These vehicle health monitoring (VHM) systems for railways are used to monitor these quantities insidefailure could potentially result in the loss of life's, damage of rail infrastructure orwe will validate the proposal and design an energy-efficient protocol for railway applications.
Utilization of fiber optic Bragg Grating sensing systems for health monitoring inrailway applications
free download
revolutionize the railway industry and to update conventional systems into 'Smart Railways', thereby providingThe FBG sensors can be used to monitor many important railway sub-systems suchmonitors, train load detectors as well as serving as continuous rail crack detectors.
Fiber Bragg grating sensors for structural health monitoring of Tsing Ma bridge: Background and experimental observation
free download
the strain of different parts of the TMB under both the railway and highwayimplemented by the Highways Department of Hong Kong SAR Government to monitor the structuralare also described, and the preliminary observation results on the structural health monitoring of the
Impedance-based health monitoring of civil structural components
free download
Earthquake Damage Monitoring for Underground Structures Based Damage Detection Techniques." International Journal of Railway Piezoelectric Sensor-Based HealthMonitoring of Rail road Tracks Using a Two and Cu were also assumed to be particles originating from the worn out of wheel and rail.For iron, it was assumed to have originated mainly from brakes and tracks of the metroIn a study conducted in Hong Kong, levels of particulate matter in railway transport were compared
Structural health monitoring activities of applying optical fiber sensors in taiwan
free download
of a bridge was conducted to study the axial stress distribution and train-track-bridge interaction 2. Installation of the FBG sensors and monitoring of the performance of railwaytracks.used to measure the dynamic deflection curves of the viaduct of high speed railsystems due to
Neural networks trained by analytically simulated damage states
free download
Applicability of a Fuzzy Genetic System for Crack Diagnosis"The HealthMonitoring of Bridges using"Time-delay neural networks in damage detection of railway bridges." Advances in Engineering Software,
Structural health monitoring of civil infrastructure
free download
in Australia have focused on the typical very short-span highway and railway bridges; in accelerometers and data acquisition equipment and developments of random decrement techniques to track fundamental modeso far does not play a major role in tracking the health
Fatigue analysis and life prediction of bridges with structural health monitoring data Part I: methodology and strategy
free download
The development of the structural health monitoring system provides an efficient way to get an accuratethe most heavily instrumented bridge project of the integrated online monitoring system in theof strain gauges installed for the Tsing Ma Bridge including rail track sections at
Use of ORP for monitoring and control of aerobic sludge digestion
free download
The oxidation-reduction potential (ORP) was monitored within aerobic sludge digesters undergoing alternating"Potential strategies for process control and monitoring of stabilization reactor treating sanitary landfill leachate." Journal of Environmental Science and Health, Part
Issues in infrastructure health monitoring for management
free download
Monitoring of Railway Loading Effects. Structural HealthMonitoring of Long-Span Suspension Bridges.
Real-time train wheel condition monitoring by fiber Bragg grating sensors
free download
low in optical loss and immunity from EMI is particular suitable for electrified railways with track with a fiber-optic sensor, in Proceedings of the ASME/IEEE 2006 Joint Rail Conference (JRC HY Tam, SY Liu, WH Chung, TK Ho, SL Ho, and KK Lee, Smart railway sensor network
Phase I IASC-ASCE structural health monitoring benchmark problem using simulated data
free download
The Bayesian methodology for the detection of railway ballast damage under a concrete sleeper Engineering Structures,SMC structural health monitoring benchmark problem using monitored data from an actual cable
Wavelet-based approach for structural damage detection
free download
Detection of loose fasteners in a third rail support assembly using a waveletMonitoring of Railway Loading Effects. Structural HealthMonitoring of Long-Span Suspension Bridges.
Structural health monitoring of railroad wheels using wheel impact load detectors
free download
Railway wheel out-of-roundnessInfluence of wheel-rail contact forces and track response. 13th International
Monitoring-based fatigue reliability assessment of steel bridges: analytical model and application
free download
sensing, data acquisition, computing, communication, data and information management, have greatly promoted the applications of structural health monitoring (SHM) technology2. The strain gauge SPTLS16 was installed under the track plate of the railway beam composed
Preface to the special issue on phase I of the IASC-ASCE structural health monitoringbenchmark
free download
"System identification of super high-rise buildings using limited vibration data during the"Damage identification of substructure for local healthmonitoring." Smart Structures andKalman Filter for Structural Damage Identification." Journal of Infrastructure Systems,
Fiber Bragg grating sensors for structural and railway applications
free download
Alternatively, two FBG sensors installed on the railtrack, separated by a known distance can also be used toThe results of a one-hour track are shown in Figure 11.detect train passages and due to their many inherent characteristics, their potential in the railway applications is In the railway industry, the maintenance periods are mainly based on mileage, andThe monitoring of bogie mechanical components, such as the track, wheels, and bearings, has been largely connected to the shaft in order to allow the simulation of the wheel rail inter action.
GPS measurement of wind-induced suspension bridge girder displacements
free download
2013. Monitoring of Railway Loading Effects.Development and application of a vision-based displacement measurement system for structural healthmonitoring of civil structures." Smart Structures and Systems,
A summary review of wireless sensors and sensor networks for structural health monitoring
free download
2. Hardware Design of Wireless Sensor Platforms for Structural HealthMonitoring For example, to monitor a large-scale civil structure, communication ranges in excess ofRealizing the need to reduce the costs associated with wired structural monitoringsystems, Straser and
Damage detection in structures based on feature-sensitive neural networks
free download
"Application of a Web-enabled real-time structural healthmonitoringsystem for civil"Structural healthmonitoring and damage"Time-delay neural networks in damage detection of railway bridges." Advances in Engineering Software, 10.1016/S0965-9978(96)00038-5, 1-10.
Monitoring traffic loads and dynamic effects using an instrumented railway bridge
free download
that can be used to identify/monitor trends in railway traffic which, in turn, can be used to develop design trains for railway bridge codes; (iii) it will provide data for the quality control of wheel tread and rail surface, leading to lower bridge/track maintenance costs
Noisespy: A real-time mobile phone platform for urban noise monitoring and mapping
free download
Continuous access to this information would allow him/her to track movements of an unknown user.unit that will house a number of optional sensors to monitor environment, health and local modelling techniques, based on information such as traffic flow data, road/rail type, and
Real-time monitoring of railway traffic using slope-assisted Brillouin distributed sensors
free download
In [8], high spatial resolution strain measurements over a 2.8 m railtrack length are reported.The rail sector selected for real-timemonitoring tests was a continuous welded rail situated nearThe line, belonging to the railway network Ferrovie del Gargano, is crossed by only one
Rail track and rail vehicle intelligent monitoring system
free download
In the area of monitoring of railwaytracks and vehicles, some patents can be found. track, damage is detected by the system, with a high certainty it is caused by track roughnessTo detect failures of rail vehicle driving and suspension systems the model based diagnostics can be
Health monitoring of bridges
free download
Monitoring 7 2.1 Bridge Management Philosophy 8 2.2 Structural HealthMonitoring 9 2.37.2 Deflection and Displacement Monitoring 7.3 Fatigue Assessment by Monitoring 7.4 Corrosion 551 Bridge, Bad Bevensen, Germany 9.13 The NewArsta Railway Bridge, Stockholm
Energy harvesting for structural health monitoring sensor networks
free download
Such a system is the most commonly used scheme for structural healthmonitoring studies.The schematic of the decentralized wireless monitoringsystem is shown in Fig. 2.DVS algorithms are typically implemented at the level of an operating system's scheduler.
Assessment of dynamic measurement accuracy of GPS in three directions
free download
software developed at The Hong Kong Polytechnic University, the GPS HealthMonitoring Computer Program system (WGS84) was transformed into the motion simulation table coordinate system (X, Y, Zbe seen that, without the filtering, GPS can satisfactorily track the sinusoidal
Condition assessment for bridge management
free download
2013. Monitoring of Railway Loading Effects. Structural HealthMonitoring of Long-Span Suspension Bridges.A Characterization of Traffic and Temperature Induced Strains Acquired Using a Bridge MonitoringSystem. Structures Congress 201189-100.
Railway point mechanisms: condition monitoring and fault detection
free download
were attempting to reduce the number of monitor- ing sensors required in a railway signalling systemRail and Rapid Transitmechanisms of high-speed vision systems similar to those described in reference [31] for the on-board monitoring of track surface, etc.
Safety monitoring of railway tunnel construction using FBG sensing technology
free download
Beijing-Shanghai high-speed rail Mountain 12Railwaytrack performance monitoring and safety warning system, Journal of Performance of Constructed Facilities, ASCE, Vol.Fiber sensors for strain measurements and axle counting in high-speed railway applications,
-SOFTWARE SALES SERVICE-https://www.engpaper.net--