Relevant bibliographies by topics / Railroad track

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Railroad track'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "Railroad track"

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Resendiz, Esther, John Hart, and Narendra Ahuja. "Automated Visual Inspection of Railroad Tracks." Intelligent Transportation Systems, IEEE Transactions on 14, no. 2 (May 2013): 751–60. http://dx.doi.org/10.1109/tits.2012.2236555.

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Thousands of miles of railroad track must be inspected twice weekly by a human inspector to maintain safety standards. A computer vision system, consisting of field-acquired video and subsequent analysis, could improve the efficiency of the current methods. Such a system is prototyped, and the following challenges are addressed: the detection, segmentation, and defect assessment of track components whose appearance vary across different tracks and the identification and inspection of special track areas such as track turnouts. An algorithm that utilizes the periodic manner in which track components repeat in an inspection video is developed. Spectral estimation and signal-processing methods are used to provide robust detection of the periodically occurring track components. Results are demonstrated on field-acquired images and video.
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Xu, Peng, Reng-Kui Liu, Feng Wang, Fu-Tian Wang, and Quan-Xin Sun. "Railroad Track Deterioration Characteristics Based Track Measurement Data Mining." Mathematical Problems in Engineering 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/970573.

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Accurate information on future railroad track condition is essential to optimally schedule track Maintenance & Renewal activities in order to minimize influences of the activities on rail traffic under constraints of limited budgets and maintaining allowable condition tracks. In this paper, a track measurement data mining method is presented to this aim. It is developed on the basis of track deterioration characteristics. Actual track measurement data is used to analyze errors in track condition predictions by the method. The analysis results show that the proposed method can mine accurate track deterioration rates from historical track measurement data and thus accurately provides future track condition two or three months in advance.
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Choi, Jung-Youl, Jee-Seung Chung, and Sun-Hee Kim. "Experimental Study on Track-Bridge Interactions for Direct Fixation Track on Long-Span Railway Bridge." Shock and Vibration 2019 (January 28, 2019): 1–9. http://dx.doi.org/10.1155/2019/1903752.

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The rail and track girder of the direct fixation track (DFT) system on the Yeongjong Grand Bridge (YGB) in Korea exhibit integrated behavior. Therefore, unlike the DFT system in general concrete tracks, the track support stiffness (TSS) of the DFT system on the YGB cannot be evaluated with only the displacement of the rail. The actual TSS of the DFT system supported by the flexible track girders was lower than that of the DFT system supported by the general substructure. For this reason, field measurements and a finite element analysis that reflects the actual operating speed of railroad vehicles on the YGB (i.e., Airport Railroad Express (AREX), nonstop Airport Railroad Express (AREX Express), and Korea Train Express (KTX)) were conducted in this study to determine the interactions between the rail and the track girder. The results indicated that the DFT system on the YGB is supported by track girders that exhibit relatively flexible behavior. As a result, the TSS is directly influenced by the bending stiffness of the track girder.
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Kota, P. N., Aditya Pal, and Amit Vitekar. "Railroad Track Maintenance Device." International Journal on Communications Antenna and Propagation (IRECAP) 7, no. 6 (November 30, 2017): 476. http://dx.doi.org/10.15866/irecap.v7i6.13605.

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Bridger, Maxine. "The Railroad-Track Problem." Mathematics Teacher 85, no. 6 (September 1992): 439–41. http://dx.doi.org/10.5951/mt.85.6.0439.

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Mukherjee, Kanchan Kuntala, Paramita Banerjee, and Arlene Zide. "Along the Railroad Track." Chicago Review 38, no. 1/2 (1992): 122. http://dx.doi.org/10.2307/25305574.

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Köllő, Szabolcs Attila, Attila Puskás, and Gavril Köllő. "Ballasted Track versus Ballastless Track." Key Engineering Materials 660 (August 2015): 219–24. http://dx.doi.org/10.4028/www.scientific.net/kem.660.219.

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First concrete sleepers were made of normal reinforced concrete and used during the 1930s and 1940s. Concrete railroad ties became popular in Europe after World War II because of the advances in design, material quality and production of pre-stressed concrete. Now as before, concrete sleepers on ballast represent the primary basis of track construction, around the world, but the twin block concrete sleepers are also popular and widely used. The continuously increasing operational loads and speeds forced the railway companies to update their technical and economic system to keep their vital role in transporting passengers and merchandise. In this development a very important role played the superstructure of the railroad system, and this modernization process led to appearing of the ballastless track system approximately 60 years ago. The article presents a comparison of two main types of track systems, including technical and economic aspects.
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Dai, Guang Yu, Jun Zhang, Kun Lin Lü, Long Guo, Liang Sun, Jun Bin Fang, Zhe Chen, and Jian Hui Yu. "Online Real-Time Detection Method for Defects of Railroad Track Surface." Applied Mechanics and Materials 321-324 (June 2013): 1017–20. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.1017.

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In the field of detecting for defects of railroad track surface, computer vision method for detection has been widely used. An online real-time image processing system for defects of railroad track surface is introduced in the paper. Results show that: if the number of pixels in each railroad track surface image is 512×240, the train speed can be 50 Km/h while the image processing system can real-time detect the railway track surface defects, the number of pixels in in each railroad track surface image is 320×250, the train speed can be 100 Km/h while the image processing system can real-time detect the railway track surface defects.
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Xu, Peng, Chuanjun Jia, Ye Li, Quanxin Sun, and Rengkui Liu. "Developing an Enhanced Short-Range Railroad Track Condition Prediction Model for Optimal Maintenance Scheduling." Mathematical Problems in Engineering 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/796171.

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As railroad infrastructure becomes older and older and rail transportation is developing towards higher speed and heavier axle, the risk to safe rail transport and the expenses for railroad maintenance are increasing. The railroad infrastructure deterioration (prediction) model is vital to reducing the risk and the expenses. A short-range track condition prediction method was developed in our previous research on railroad track deterioration analysis. It is intended to provide track maintenance managers with two or three months of track condition in advance to schedule track maintenance activities more smartly. Recent comparison analyses on track geometrical exceptions calculated from track condition measured with track geometry cars and those predicted by the method showed that the method fails to provide reliable condition for some analysis sections. This paper presented the enhancement to the method. One year of track geometry data for the Jiulong-Beijing railroad from track geometry cars was used to conduct error analyses and comparison analyses. Analysis results imply that the enhanced model is robust to make reliable predictions. Our in-process work on applying those predicted conditions for optimal track maintenance scheduling is discussed in brief as well.
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Andreyeva, Ludmila, Yevgeniy Svintsov, and Yelena Tarasevich. "ON ECONOMIC ASSESSMENT OF BALLASTLESS TRACK STRUCTURE EFFICIENCY." Bulletin of scientific research results, no. 4 (December 17, 2017): 63–69. http://dx.doi.org/10.20295/2223-9987-2017-4-63-69.

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Objective: To describe the regulation of railroad traffic parameters in modern conditions, that lead to the necessity of putting into operation the new systems of track design, relevant for regulations in question. Methods: The method of matching, as well as the method of comparative analysis was applied in the study. Results: The advantages and disadvantages of ballastless track structure and conventional ballast track design were compared. The possibility of extensive application of ballastless track structure on modern railroads was analyzed. Practical importance: Ballastless track structure implementation will make it possible to solve practical tasks of using the given type of track design in transport construction.
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Dissertations / Theses on the topic "Railroad track"

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Fesharaki, Mohammad. "3-D Dynamic Analysis of High-Speed Railroad Track." FIU Digital Commons, 2017. http://digitalcommons.fiu.edu/etd/3366.

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High-Speed Rail (HSR) as a fast, reliable and environmentally friendly mode of transportation has received a lot of attention in recent decades. The International Union of Railways reported that there are more than 18600 miles of HSR in operation and about 1.6 billion passengers per year are carried by them. Although there are plans for HSR in many states including Florida, the United States, however, is still hesitant to develop its own HSR network. One of the main barriers to developing high-speed rail is excessive vibration propagation to the media which may cause annoyance to people who live in the track neighborhood. Train induced vibration also contributes to track settlement, developing track flaws, and increasing life cycle cost of track and supporting structures. The aim of this research is to address this problem by conducting a comprehensive investigation into track dynamics. For this purpose, three-dimensional mass-spring-damper models of vehicle, track and supporting structures were developed and matrices of mass, stiffness, and damping of each subsystem were formed. The response of the whole system was, then, determined by coupling the subsystems using Hertz contact theory. The differential equations of the coupled system were solved by the Newmark integration method and the results including vertical and lateral displacements and forces were presented in the time domain. Since the purpose of this dissertation is to quantify the effect of track and vehicle condition on vibration level, rail defects were also taken into account and rail random irregularities for the vertical profile, Gauge, alignment and cross level (super elevation) were incorporated into a numerical solution. The results of the study show the effect of track and vehicle parameters on the response of the vehicle, track, and substructures. Since Florida and some other states in the United States are very prone to hurricanes, an investigation was conducted into the effect of wind speed on vehicle stability. For this purpose, a curved beam was modeled to consider the influence of track curvature, cant deficiency, wind speed and train speed simultaneously. The results from the study show the maximum allowable values of train speed and axle load for different wind speeds. The findings can be used to decide under what circumstances there is a risk of vehicle overturning and how to avoid it.
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Wehbi, Mohamed. "Developing a novel technique to extract track stiffness information from track geometry measurement." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6722/.

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Railway tracks deteriorate over time due to the combined effects of train loads and environment. To carry out appropriate maintenance, it is necessary to measure the condition of the track. There are two broad categories of condition measures namely: function and structural measures of conditions. Functional measures of condition assess the condition of the track from the point of view of the user. An example of a commonly used functional measure of condition is track geometry. In the UK, track geometry is measured by the track recording coach and it is carried frequently on the entire network. On the other hand, structural measures of condition assess the structural integrity of the track. Example of a commonly used structural measure of condition is track stiffness. In the UK, track stiffness is measured using the Falling Weight Deflectometer (FWD) and it is carried out less frequently on specific railway track sections as it is very slow, requires closure of the track and is expensive to operate. The aim of this research is to investigate the feasibility of using track geometry measurement to extract track stiffness information and ultimately develop a prototype automated system to achieve this.
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Romps, John F. (John Francis). "Modelling track maintenance and its effects on the reliability of a single track railroad line." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12397.

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Man, Amnon Pieter de. "Dynatrack a survey of dynamic railway track properties and their quality /." Delft, the Netherlands : Delft University Press, 2002. http://books.google.com/books?id=UydSAAAAMAAJ.

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Khadem, Sameni M. "Railway track capacity : measuring and managing." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/348816/.

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This thesis adopts a holistic approach towards railway track capacity to develop methodologies for different aspects of defining, measuring, analysing, improving and controlling track capacity utilisation. Chapter 1 presents an overview of the concept of capacity and the railway capacity challenge is explained. Chapter 2 focuses on past approaches to defining and analysing the concept of railway capacity. Existing methods for estimating capacity utilisation are studied in four categories: analytical methods, parametric models, optimisation and simulation. Chapter 3 examines various factors affecting capacity utilisation. Chapter 4 develops the systems engineering foundation toward railway capacity. From process improvement methods, Six Sigma and its Define, Measure, Analyse, Improve and Control (DMAIC) cycle is chosen as the underlying framework of the thesis. Chapter 5 defines lean, micro and macro capacity utilisation based on the discrete nature of railway capacity. Data Envelopment Analysis (DEA) is used to develop two novel methodologies to analyse lean capacity utilisation. A DEA model analyses relative efficiency of train operating companies based on their efficiency to transform allocated train paths (timetabled train kilometres) and franchise payments to passenger-kilometres while avoiding delays. A case study demonstrates its application to 16 train operating companies in the UK. The operational efficiency of stations is benchmarked from similar studies for ports and airports. Two models are developed for analysing technical efficiency and service effectiveness. 96 busiest stations in Great Britain are analysed by this method. For analysing capacity utilisation in the freight sector, the concept of ‘profit-generating capacity’ is introduced in chapter 6. It is applied in an American freight case study to choose between bulk and intermodal trains in a heterogeneous traffic. DEA is also used in another case study for identifying the most profitable commodities. Chapter 7 suggests using variation reduction and failure mode and effect analysis (FMEA) to control capacity utilisation. For improving railway capacity utilisation it is suggested to find and improve the weakest line section, the weakest trains and the weakest station. A real world case study of the South West Main Line in Great Britain, demonstrates applying these aspects. For finding the weakest line section two existing methods of the UIC 406 and the CUI method are compared with each other. For finding the weakest trains a meso index is suggested. It can identify which trains can be removed to free up some capacity in the busiest section of the line. Simulating delays and removing the highest delay causing trains is another method suggested. The weakest stations are identified by applying the DEA methodology developed in chapter 5. Target values for train stops at each station are suggested to be fed to the tactical timetabling. It is concluded that developing methodologies to analyse, improve and control railway capacity utilisation is needed and the methodologies proposed in this thesis can be a stepping stone towards them.
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Stith, Jason C. "RAILROAD TRACK PRESSURE MEASUREMENTS AT THE RAIL/TIE INTERFACE USING TEKSCAN SENSORS." UKnowledge, 2005. http://uknowledge.uky.edu/gradschool_theses/213.

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It has been desirable for years to develop non-intrusive/non-invasiveprocedures to determine the pressures and stresses at various levels andinterfaces in the railroad track structure in order to optimize track designs andimprove subsequent track performance. Recent research has developedsatisfactory procedures for measuring pressures in the track structure at theballast/subballast/subgrade levels using earth pressure cells. The researchreported in this thesis documents the development of a technique for measuringthe pressures in the track, at the rail/tie plate/tie interfaces, using a very thinpressure sensitive Tekscan sensor. The Tekscan Measurement System uses asensor composed of a matrix-based array of force sensitive cells, similar to ministrain gauges, to obtain accurate pressure distributions between two surfaces inthe track. This thesis specifically describes: 1) the optimum procedure to installthe sensors into the track, 2) the recommended practices to effectively collectdata with the software, and 3) the accepted techniques for analyzing the results.Both laboratory calibration and in-track testing have been conducted and theresults are presented. The findings attest to the usefulness and practicality of theprocedure for accurately measuring pressures in railroad tracks. The proceduremay also be applicable for a wide variety of specific track related measurementssuch as validating curve geometric criteria, assessing crossing diamond impactpressures, and evaluating the advantages/disadvantages of various types of tieplates, fastenings and tie compositions.
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Daheshpour, Kasra. "Network level decision support system to assess railway track maintenance needs." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8164/.

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Maintenance management decision-support systems are needed to help senior decision-makers and asset managers to better plan timely and efficient maintenance. Within the railway industry, several maintenance management decision-support systems have been developed. However, most these operate at project level where decisions are limited to short sections of track. Network level maintenance management systems enable future prediction of the condition of the railway network under different allocation of resources in a manner to provide acceptable levels of safety, reliability and cost. This project describes the development of a theoretical framework for the strategic assessment of network level railway maintenance funding and policy decisions. The model is designed to aid railway asset managers in planning medium to long-term maintenance investment requirements for the railway network. The model is based on stochastic processes which are capable of determining the effects of traffic, maintenance and climate on network condition under any budget scenario.
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Le, Pen Louis. "Track behaviour : the importance of the sleeper to ballast interface." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/73284/.

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The aim of this research is to develop a fuller understanding of the mechanical behaviour of the sleeper/ballast interface, related in particular, to the forces applied by high speed tilting trains on low radius curves. The research has used literature review, field measurements, and laboratory experiments on a single sleeper bay of track. Theoretical calculations are also presented. Field measurements are carried out using geophones to record time/deflection for sleepers during passage of Pendolino trains on the West Coast Main Line. Calculations are presented to quantify normal and extreme magnitudes of vertical, horizontal and moment (VHM) loads on individual sleepers. Results from laboratory experiments, on the pre-failure behaviour of the sleeper to ballast base contact area, show that lateral load/deflection behaviour is load path dependent and relations are determined for improved computer modelling of the sleeper/ballast interface. Further test results are used to establish the failure envelopes for combined VHM loading of the sleeper/ballast base contact area. Tests show that the sleeper/ballast base resistance at failure occurs at a load ratio (H/V) of about 0.45 (24°) at 2 mm of displacement tending to 0.57 (30°) at greater displacements. In addition, measurements from pressure plates within the testing apparatus are used to describe the development of confining stress within the ballast during 100 cycles of vertical load. The development of confining stress is assessed with reference to a finite element model of the laboratory apparatus and it is shown that the earth pressure ratio moves towards the active condition for peak load and the passive condition at minimum load per cycle. The contribution to lateral resistance of the crib ballast and varying sizes of shoulder ballast is also established and it is found that the shoulder and crib resistance can best be characterised by taking the mean resistance over a range of deflection from 2 mm to 20 mm. Calculations are presented, supported by the experimental data, to quantify the resistance from different sizes of shoulder ballast and a chart is presented which can be used as the basis for shoulder specification in practice.
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Gong, Cencen. "The interaction between railway vehicle dynamics and track lateral alignment." Thesis, University of Huddersfield, 2013. http://eprints.hud.ac.uk/id/eprint/19755/.

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This thesis examines the effect of vehicle dynamics on lateral deterioration of the track alignment. As rail traffic runs along a route, the forces imposed upon the track cause the ballast to settle, and hence the track geometry deteriorates. At a specified value of deterioration the track geometry needs to be restored by tamping or other methods. As the deterioration is mainly in the vertical direction, this aspect has been more widely studied and models have been developed to predict vertical track geometry deterioration. On the other hand, lateral track deterioration is not as well understood, and this thesis aims to fill the gap in this knowledge. However, the understanding of the lateral deterioration mechanisms becomes more important as speed and capacity increase. This thesis describes statistical studies of track lateral deterioration, as well as the development and validation of a vehicle-track lateral dynamic interaction model. This work is undertaken to contribute to the fundamental understanding of the mechanisms of track lateral deterioration, therefore making the effective control and reduction of the lateral deterioration achievable. The statistical analysis provides a better understanding of three aspects of track lateral irregularities, namely: the relationship between vertical and lateral irregularities, the relationship between track curvature and track lateral irregularity and the change in track lateral deterioration over time. The vertical and lateral track irregularity magnitudes are clearly correlated. The track quality in the vertical direction is generally worse than in the lateral direction, however the number of track sections with lateral quality significantly worse than the vertical is non-negligible. The lateral irregularities tend to be larger on curves. It is notable that less than ten percent of the track studied has a constant lateral deterioration due to frequent maintenance activities and bidirectional lateral dynamic forces. Unlike vertical settlement, lateral deterioration develops exponentially in both magnitude and wavelength, and the major influences are found from the irregularities with wavelength longer than 10 m. The change in track lateral irregularity with different curve radii and the lateral deterioration rate are described in separate exponential power functions due to the limitation of the available track data. The parameters for these empirical equations do not remain constant due to the change in track conditions. Current track lateral models mainly focus on lateral failures such as buckling and lateral sliding. The development of lateral track irregularities tends to be studied using representative values of net lateral forces and net L/V (Lateral/Vertical) load ratios. Unlike other track lateral deterioration models, the model developed in this thesis focuses on the development of lateral irregularities based on the dynamic interactions between the vehicles and the track system. This model makes it possible to carry out more integrations and analysis of the track lateral deterioration in a realistic dynamic simulation, using vehicle models, contact conditions, track initial irregularities, and traffic mix more close to the reality. The vehicle-track lateral dynamic interaction model was validated against track geometry data measured on the West Coast Mainline (WCML) in England. It has been found that the model gives a reasonably accurate prediction of the development of lateral track irregularities. However, it also tends to predict a short wavelength deterioration that is not seen in the actual track deterioration. Improvements to the model are suggested by either adding more factors or simplifying the model depending on specific target application. Enhancing the model by including more details, such as longitudinal forces, temperature effect, more layered track systems, uneven track bed conditions and more representative wheel-rail contact conditions etc., may help understand the reason of the additional short wavelength. A sensitivity analysis was performed in order to identify the critical factors that influence lateral track deterioration. The track damage caused by specific vehicles can be controlled by understanding different vehicle dynamics behaviour on a particular track section or route. Vehicles with simple suspension design and heavy axle loads tend to cause more lateral track damage. Within a certain speed range, there will be a critical speed that generates the largest lateral deterioration. Vehicles with different dynamic behaviours can generate a potential offset of the lateral deterioration, so it is possible to design the traffic mix to cancel out the peak deterioration. However, it may not be very practical to redesign the traffic mix due to different traffic requirements. Subsequently, actions can be taken to effectively reduce track lateral deterioration, such as optimise the suspension design, vehicle weight, the selection of an optimal operation speed, and enhance the traffic mix design. As the most important interface between vehicle and track, the wheel-rail contact condition has an extremely large influence on lateral deterioration. Wheel and rail profiles with different wear conditions can cause altered vehicle-track lateral dynamic interaction. It is found that increasingly worn wheel/rail profiles within an acceptable tolerance can effectively reduce the lateral deterioration. Lateral deterioration can also be reduced by increasing all the track stiffness values, damping values and the mass of rails and sleepers, or alternatively, by decreasing the sleeper spacing. The sleeper-ballast interface is found to play the most important role in lateral deterioration. The interfaces between the sleeper and ballast shoulder, crib and base determines the non-linear characteristic such as hysteresis and sliding features. Improving the strength of the sleeper-ballast interface can improve the elastic limits and hysteresis characteristics, hence reducing the lateral deterioration. The findings of the investigation indicate that the model provides in-depth knowledge of the mechanisms influencing lateral deterioration and provides effective solutions with consideration of vehicles, wheel-rail contact and the track system. Further work would include track data with sufficient information in order to develop a more comprehensive empirical model that describes the lateral deterioration, inclusion of more potentially influential factors such as: temperature, ground condition, traffic etc. The model can be improved by taking into account additional factors such as the influence of longitudinal forces from the wheels to the rails, different weather and temperatures, subgrade and ground conditions, etc. The reason for the high frequency noise in the deterioration prediction is not understood yet and it should be discussed in terms of more accurate vehicle simulation results and more comprehensive rail and wheel worn profiles measured on the target track and vehicles. Furthermore, the sleeper-ballast lateral characteristics are not well understood and the previous research in this area is quite limited. To improve on the present work it would be useful to carry out laboratory tests in order to capture more accurately track lateral stiffness and damping values as well as the comprehensive non-linear characteristic of track lateral residual resistance behaviour.
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Jain, Ashish. "Discrete Element Modeling of Railway Ballast for Studying Railroad Tamping Operation." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/91438.

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The development of Discrete Element Model (DEM) of railway ballast for the purpose of studying the behavior of ballast particles during tamping is addressed in a simulation study, with the goal of optimizing the railroad tamping operation. A comprehensive literature review of applicability of DEM techniques in modeling the behavior of railway ballast is presented and its feasibility in studying the fundamental mechanisms that influence the outcome of railroad tamping process is analyzed. A Discrete Element Model of railway ballast is also developed and implemented using a commercially available DEM package: PFC3D. Selection and calibration of ballast parameters, such as inter-particle contact force laws, ballast material properties, and selection of particle shape are represented in detail in the model. Finally, a complete tamping simulation model is constructed with high degree of adjustability to allow control of all process parameters for achieving realistic output. The analysis shows that DEM is a highly valuable tool for studying railroad tamping operation. It has the capability to provide crucial and unprecedented insights into the process, facilitating not only the optimization of current tamping practices, but also the development of novel methods for achieving sustainable improvements in track stability after tamping in the future. Different ways of modeling particle shapes have been evaluated and it has been shown that while using spheres to represent irregular ballast particles in DEM provides immense gains in computational efficiency, spheres cannot intently capture all properties of irregularly shaped particles, and therefore should not be used to model railway ballast particles. Inter-particle and wall-particle contact forces are calculated using Hertzian contact mechanics for determining ballast dynamics during tamping. The results indicate that the model is able to accurately predict properties of granular assemblies of the railway ballast in different test cases. The developed model for simulating tamping operation on a half-track layout is expected to be extended in future studies for evaluating rail track settlement and stability, optimization of tamping process, and performance of different ballast gradations.
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Books on the topic "Railroad track"

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Track planning for realistic operation: Prototype railroad concepts for your model railroad. 3rd ed. Waukesha, WI: Kalmbach Pub. Co., 1998.

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M, Waters John, ed. Track geotechnology and substructure management. London: T. Telford, 1994.

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Klinov, S. I. Zheleznodorozhnyĭ putʹ na iskusstvennykh sooruzhenii͡a︡kh. Moskva: "Transport", 1990.

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Czyczuła, Włodzimierz. Eksploatacyjna stabilność drogi kolejowej. Kraków: Politechnika Krakowska, 1992.

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Schulte, Christopher F. The dictionary of railway track terms. Philadelphia, Pa. (Box 153, Philadelphia 19152): RCON Services, 1989.

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Thunder down the track. New York: Atheneum, 1986.

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Walkaround model railroad track plans. Waukesha, WI: Kalmbach Pub. Co., 1991.

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The track. Houghton, South Africa: Jacana, 2003.

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A/S, Kampsax International. Survey on mechanised preventive track maintenance: Final report. [Maputo]: The Commission, 1990.

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Johnson, Kent J. Basic model railroad track plans: Small starter layouts you can build. Waukesha, Wis: Kalmbach Books, 2002.

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Book chapters on the topic "Railroad track"

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Indraratna, Buddhima, and Trung Ngo. "Parameters for track design." In Ballast Railroad Design: SMART-UOW Approach, 5–16. First edition. | Boca Raton : CRC Press/Balkema, [2018]: CRC Press, 2018. http://dx.doi.org/10.1201/9780429504242-2.

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Gao, Yin, Shushu Liu, and Mike McHenry. "Evaluation of Ballast Particle Movement Using SmartRocks for Track Transitions." In Railroad Ballast Testing and Properties, 208–15. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2018. http://dx.doi.org/10.1520/stp160520170140.

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Sussmann Jr., Theodore R., and Hugh B. Thompson. "Methods to Assess the Impact of Ballast Condition on the Track Structure." In Railroad Ballast Testing and Properties, 39–53. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2018. http://dx.doi.org/10.1520/stp160520170036.

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Grussing, Michael N., and Donald R. Uzarski. "Framework for Short-Line Railroad Track Asset Management and Condition Reporting." In Infrastructure Reporting and Asset Management, 172–77. Reston, VA: American Society of Civil Engineers, 2008. http://dx.doi.org/10.1061/9780784409589.ch24.

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Jackson, John E., Nelson R. Bauld, and Minisandram Ramesh. "A Finite Element Model for the Lateral Strength of Railroad Track Structures." In Computational Mechanics ’86, 299–304. Tokyo: Springer Japan, 1986. http://dx.doi.org/10.1007/978-4-431-68042-0_39.

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Xiao, Yuanjie, Liuxin Chen, Kunye Zhou, and Erol Tutumluer. "Dynamic Response Modeling of High-Speed Railroad Ballastless Track Over Pile-Raft Foundation." In Proceedings of GeoShanghai 2018 International Conference: Transportation Geotechnics and Pavement Engineering, 207–17. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0011-0_23.

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Bassanini, A., A. La Bella, and A. Nastasi. "Allocation of Railroad Capacity Under Competition: A Game Theoretic Approach to Track time Pricing." In Applied Optimization, 1–17. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/978-1-4757-6871-8_1.

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Gooch, Jan W. "Railroad Tracks." In Encyclopedic Dictionary of Polymers, 607. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_9747.

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Edmondson, Amy C. "Cosmic Railroad Tracks: Great Circles." In A Fuller Explanation, 206–31. Boston, MA: Birkhäuser Boston, 1987. http://dx.doi.org/10.1007/978-1-4684-7485-5_14.

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Indraratna, Buddhima, and Trung Ngo. "Bearing capacity of ballasted tracks." In Ballast Railroad Design: SMART-UOW Approach, 17–22. First edition. | Boca Raton : CRC Press/Balkema, [2018]: CRC Press, 2018. http://dx.doi.org/10.1201/9780429504242-3.

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Conference papers on the topic "Railroad track"

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Molina Camargo, Luis Fernando, J. Riley Edwards, and Christopher P. L. Barkan. "Emerging Condition Monitoring Technologies for Railway Track Components and Special Trackwork." In 2011 Joint Rail Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/jrc2011-56113.

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North American Railroads 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. Tracks that are subjected to heavy haul or high-speed traffic necessitate frequent inspection and more stringent maintenance requirements, but present railroads with less time to accomplish it. The international railroad community has undertaken significant research to develop innovative applications for advanced technologies with the objective of improving the process of visual track inspection. Some of these technologies are currently in use or under development for a variety of railroad inspection tasks, both wayside and mobile. This paper presents an overview of different systems for condition monitoring applications for inspection of railway components. These technologies, in conjunction with defect analysis and comparison with historical data, will enhance the ability for longer-term predictive assessment of the health of the track system and its components, more informed and proactive maintenance strategies, and improved understanding of track structure degradation and failure modes.
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Nelson, Carl A., Abolfazl Pourghodrat, and Mahmood Fateh. "Energy Harvesting From Vertical Deflection of Railroad Track Using a Hydraulic System for Improving Railroad Track Safety." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63906.

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Grade crossings are locations of significant interest for prevention of collisions, injuries and fatalities in the railroad transportation system. Another area of concern is track maintenance, since derailments resulting from mechanically deficient track structures can cause significant endangerment to property and lives. A commonality between these two classes of incidents is that many occur in remote areas due to the lack of electrical infrastructure to power automated warning systems and/or track health monitoring sensor networks. Providing electrical infrastructure to railroad crossings in remote areas is often not economical, and other alternative sources of electricity such as solar and wind energy are not reliable and robust. This motivated development of a hydraulic system capable of harnessing power from vertical deflection of railroad track due to passing railcar traffic. A hydraulic cylinder mounted under the bottom of the rail is compressed and relaxed by passage of each railcar, forcing the hydraulic fluid towards a hydraulic motor and converting the hydraulic pressure and flow into rotational motion and torque. The rotational motion is amplified to drive a PMDC generator. The hydraulic system was developed and testing was performed to verify the functionality of the hydraulic system and quantify the power output.
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Gao, Yin, and Hai Huang. "Spectrum Analysis of Railroad Track With Hanging Tie Problem." In 2014 Joint Rail Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/jrc2014-3755.

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Hanging tie is a railroad track distress when voids have been developed beneath the ties due to uneven ballast settlement and improper maintenance practice. It, in return, will lead to an increase in dynamic impact loading on the top of the ballast and therefore further deteriorate the track structure. It is often difficult to identify this problem in an efficient and non-destructive manner. This paper proposed a non-destructive and fast screening method to identify hanging tie problem. A dynamic track model capable of simulating moving load and detailed tie supporting conditions is first introduced and then utilized to construct rail deflection spectrums for tracks with different supporting conditions. Case studies of different configurations of ties will be employed. Conclusions will be drawn and important findings will be highlighted in the end.
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McCarthy, William T. "Track geometry measurement on Burlington Northern Railroad." In Nondestructive Evaluation of Aging Infrastructure, edited by Donald E. Gray and Daniel H. Stone. SPIE, 1995. http://dx.doi.org/10.1117/12.212676.

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Manacorda, Guido, Davide Morandi, Antonio Sarri, and Giuseppe Staccone. "Customized GPR system for railroad track verification." In Ninth International Conference on Ground Penetrating Radar (GPR2002), edited by Steven Koppenjan and Hua Lee. SPIE, 2002. http://dx.doi.org/10.1117/12.462265.

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Nelson, Carl A., Stephen R. Platt, Sean E. Hansen, and Mahmood Fateh. "Power harvesting for railroad track safety enhancement using vertical track displacement." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Mehdi Ahmadian and Mehrdad N. Ghasemi-Nejhad. SPIE, 2009. http://dx.doi.org/10.1117/12.815544.

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Alsahli, Ali, Allan M. Zarembski, and Nii Attoh-Okine. "Predicting Track Geometry Defect Probability Based on Tie Condition Using Pattern Recognition Technique." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23051.

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Abstract Rail transportation plays a vital role in U.S. transportation. According to the National Transportation Statistics report from the Bureau of Transportation Statistics, railroads generate 29% of ton-miles of freight, whereas air, truck, water, and pipeline transportation represent the rest of the freight traffic. In the passenger spectrum, the 2016 National Transit Summary and Trends report stated that trips using rail transit modes increased from 2012 to 2016. These facts show the importance of rail transportation in the United States and highlight the critical importance of railroad traffic safety. Based on the FRA 2016 statistics, track-related defects are the second-largest cause of rail accidents. Furthermore, track irregularities resulting from defects in these parameters lead to an increase in dynamic forces that accelerate the rate of track deterioration. Consequently, the need to monitor and detect the presence and types of defects on railway tracks arises. The availability of track geometry cars and autonomous visual inspection vehicles has made acquiring track information easier. However, the need to study and understand these data remains unfulfilled. Machine learning has recently started to gain popularity in the field of railroad research due to increasing computational capacity and the need for such tools to provide information that is more useful. Techniques such as deep convolutional neural networks (DCNN), artificial neural networks, and support vector machines have been used for prediction problems in railroad research. This paper combines engineering judgments and statistical analysis to develop analytical models to estimate the probability of developing geometry defects as a function of tie conditions. The analysis is based on data provided by Georgetown Rail’s AURORA tie inspection system and from a major US class 1 railroad track geometry cars. The data used in this analysis relates to a geometry defect dataset and a tie condition dataset. The geometry dataset covers 125,554 geometry defects taken from several years of track-geometry inspection data. The data collection period was from 2014 to 2016. Convolutional neural network models were developed to estimate the probability of defects given tie patterns, as well as the outputs of the models used to build multiple regression models. Additionally, various data analysis issues were addressed in this paper. This paper’s contribution includes predictive models of track geometry defects as a function of tie condition and position. The models provide approaches to predicting the probability of geometry defects as functions of tie conditions and positions.
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Anderson, Justin S., and Jerry G. Rose. "In-Situ Test Measurement Techniques Within Railway Track Structures." In IEEE/ASME/ASCE 2008 Joint Rail Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/jrc2008-63047.

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Recent changes in national transportation needs have placed increased burden on railroad infrastructure. To meet the increased demand for efficient freight transport, the railroad industry has increased traffic volume and maximized axle loadings. Increased axle loads have forced railroads to reevaluate existing infrastructure to ensure their ability to accommodate the additional traffic loads. It is imperative to design and maintain tracks such that they can withstand high volume and increasing axle loads over an extended service life, considering the track structure is the most significant capital expense for railroad companies. It has been desirable for years to develop non-intrusive procedures to directly measure pressures and stresses at various levels and interfaces in the railroad track structure in order to optimize track designs and improve subsequent track performance. Methods for measuring both pressures and deflections have been presented in recent research focusing on assessing the performance of trackbeds with increased track modulus, primarily through the addition of asphalt underlayment. These studies involve instrumenting HMA trackbeds with earth pressure cells and displacement transducers to measure pressure levels and distributions within the track structure and rail deflections under moving trains. Additional test methodologies have been developed to include pressure readings at interfaces like the rail/tieplate interface and the tieplate/tie interface using very thin pressure sensitive Tekscan sensors. The Tekscan Measurement System uses a piezoelectric film sensor composed of a matrix-based array of force sensitive cells, similar to mini strain gauges, to obtain accurate pressure distributions between two surfaces in the track. The procedure appears applicable for a wide variety of specific track related measurements to include: 1) analyzing pressure distribution patterns at the rail base/tie plate/tie interfaces to minimize wear and eliminate pressure points, 2) validating and optimizing horizontal curve geometric design criteria relative to superelevation, 3) assessing crossing diamond, other special trackwork, and bridge approach impact pressures, and 4) evaluating the advantages/disadvantages of various types of tie plates, fastenings, and tie compositions with the objective of equalizing pressure distributions over the interface areas. Results of testing are presented in detail for test installations on CSX Transportation heavy tonnage mainlines and at the Transportation Technology Center (Pueblo) low track modulus heavy tonnage test track.
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Klauder, Louis T. "Railroad Spiral Design and Performance." In 2012 Joint Rail Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/jrc2012-74011.

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This paper reviews forms of spiral geometry that have been used and proposed as transition shapes in railroad tracks and compares them with respect to dynamic performance and spiral length. The dynamic performances that are compared were calculated using the Gensys rail vehicle motion simulation program and a well known model of the Eurofima coach. The results illustrate: 1) the dynamic disturbance caused by the discontinuity of first derivatives of track curvature and twist with the conventional ‘linear’ spiral; 2) the better dynamic performance of other simple forms of spiral including the virtually perfect performance of two of those forms; and 3) the amounts by which lengths of alternative spirals exceed that of the conventional ‘linear’ spiral for the example transition..
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Kaleli, Fatih, and Yusuf Sinan Akgul. "Vision-based railroad track extraction using dynamic programming." In 2009 12th International IEEE Conference on Intelligent Transportation Systems (ITSC). IEEE, 2009. http://dx.doi.org/10.1109/itsc.2009.5309526.

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Reports on the topic "Railroad track"

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Baxter, Louise, Tim Demorest, Ron Lamb, Devin Scherer, Rachel Schneider, and Jim Mathews. Supplemental Environmental Assessment: Herbicide Application for Installation Fenceline, Railroad Tracks, and Broadleaf Weed Control at Niagara Falls Air Reserve Station, New York. Fort Belvoir, VA: Defense Technical Information Center, February 2006. http://dx.doi.org/10.21236/ada635954.

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Kauss, Mark. Closure Report for Corrective Action Unit 539: Areas 25 and 26 Railroad Tracks Nevada National Security Site, Nevada with ROTC-1, Revision 0. Office of Scientific and Technical Information (OSTI), June 2011. http://dx.doi.org/10.2172/1018850.

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Krauss, Mark. Streamlined Approach for Environmental Restoration (SAFER) Plan for Corrective Action Unit 539: Area 25 and Area 26 Railroad Tracks, Nevada Test Site, Nevada, Revision 0. Office of Scientific and Technical Information (OSTI), June 2010. http://dx.doi.org/10.2172/984175.

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