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Relevant bibliographies by topics / BALLASTLESS RAILWAY TRACK

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Academic literature on the topic 'BALLASTLESS RAILWAY TRACK'

Author: Grafiati

Published: 11 September 2023

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Journal articles on the topic "BALLASTLESS RAILWAY TRACK"

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Týfa, Lukáš, Jan Kruntorád, and Ondřej Tomaschko. "Railway superstructure for high-speed rails." Acta Polytechnica CTU Proceedings 31 (July 14, 2021): 53–57. http://dx.doi.org/10.14311/app.2021.31.0053.

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The construction of the track is solved as a conventional (with track ballast) or as a ballastless track (without track ballast). When deciding on the choice of the most suitable track design for high-speed rail, it is necessary to emphasize that with increasing line speed, the requirements for the quality of the track geometry increase, including the size of the deviations of individual geometric parameters of the track from the projected values. When assessing the choice of track structure – especially for high-speed rails – it is therefore necessary and correct to assess the total costs (investment and operational) for a sufficiently long time. DB Netz AG’s present experience with a ballastless track since its first implementation in 1972 in Rheda station, for almost 50 years, shows that the required lifetime of 60 years has its real justification. In addition, current research and development in the field of ballastless track is moving towards extending the life of ballastless track well beyond this limit. The paper is focused on the comparison a ballasted and ballastless track construction. It deals in more detail with evaluation of the advantages and disadvantages of a ballastless track construction. The main objective is to assess the use of ballastless track structure for the construction of high-speed lines.

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Zhai, Wanming, Kaiyun Wang, Zhaowei Chen, Shengyang Zhu, Chengbiao Cai, and Gang Liu. "Full-scale multi-functional test platform for investigating mechanical performance of track–subgrade systems of high-speed railways." Railway Engineering Science 28, no. 3 (September 2020): 213–31. http://dx.doi.org/10.1007/s40534-020-00221-y.

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Abstract Motivated by the huge practical engineering demand for the fundamental understanding of mechanical characteristics of high-speed railway infrastructure, a full-scale multi-functional test platform for high-speed railway track–subgrade system is developed in this paper, and its main functions for investigating the mechanical performance of track–subgrade systems are elaborated with three typical experimental examples. Comprising the full-scale subgrade structure and all the five types of track structures adopted in Chinese high-speed railways, namely the CRTS I, the CRTS II and the CRTS III ballastless tracks, the double-block ballastless track and the ballasted track, the test platform is established strictly according to the construction standard of Chinese high-speed railways. Three kinds of effective loading methods are employed, including the real bogie loading, multi-point loading and the impact loading. Various types of sensors are adopted in different components of the five types of track–subgrade systems to measure the displacement, acceleration, pressure, structural strain and deformation, etc. Utilizing this test platform, both dynamic characteristics and long-term performance evolution of high-speed railway track–subgrade systems can be investigated, being able to satisfy the actual demand for large-scale operation of Chinese high-speed railways. As examples, three typical experimental studies are presented to elucidate the comprehensive functionalities of the full-scale multi-functional test platform for exploring the dynamic performance and its long-term evolution of ballastless track systems and for studying the long-term accumulative settlement of the ballasted track–subgrade system in high-speed railways. Some interesting phenomena and meaningful results are captured by the developed test platform, which provide a useful guidance for the scientific operation and maintenance of high-speed railway infrastructure.

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Li, Xiang Min, Suo Yan Zhang, and Jun Liu. "Research on CRTSIII Ballastless Track Slab Cracks of High-Speed Railway." Applied Mechanics and Materials 443 (October 2013): 69–73. http://dx.doi.org/10.4028/www.scientific.net/amm.443.69.

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At present ballastless track has been widely applied to railway line for passenger in our country, therefore it has broad prospect. Cracks in ballastless track slabs are inevitable in the construction and operation of high-speed railway. Based on comprehensive investigation of documents, and taking cracks in ballastless track slabs as the main object, systematic and deep research has been done within this paper. The main research contents are as follows: First of all, the structure characteristics of CRTSIII ballastless track in high-speed railway are briefly introduced; Secondly, the paper mostly introduces the impacts what cracks make, the characteristics of cracks and how they form. Subsequently the paper introduces what are made to prevent cracks.

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Zhu, Shengyang, Jun Luo, Mingze Wang, and Chengbiao Cai. "Mechanical characteristic variation of ballastless track in high-speed railway: effect of train–track interaction and environment loads." Railway Engineering Science 28, no. 4 (November 30, 2020): 408–23. http://dx.doi.org/10.1007/s40534-020-00227-6.

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AbstractDue to the fact that ballastless tracks in high-speed railways are not only subjected to repeated train–track dynamic interaction loads, but also suffer from complex environmental loads, the fundamental understanding of mechanical performance of ballastless tracks under sophisticated service conditions is an increasingly demanding and challenging issue in high-speed railway networks. This work aims to reveal the effect of train–track interaction and environment loads on the mechanical characteristic variation of ballastless tracks in high-speed railways, particularly focusing on the typical interface damage evolution between track layers. To this end, a finite element model of a double-block ballastless track involving the cohesive zone model for the track interface is first established to analyze the mechanical properties of the track interface under the loading–unloading processes of the negative temperature gradient load (TGL) followed by the same cycle of the positive TGL. Subsequently, the effect of wheel–rail longitudinal interactions on the nonlinear dynamic characteristics of the track interface is investigated by using a vehicle-slab track vertical-longitudinal coupled dynamics model. Finally, the influence of dynamic water pressure induced by vehicle dynamic load on the mechanical characteristics and damage evolution of the track interface is elucidated using a fluid–solid coupling method. Results show that the loading history of the positive and negative TGLs has a great impact on the nonlinear development and distribution of the track interface stress and damage; the interface damage could be induced by the wheel–rail longitudinal vibrations at a high vehicle running speed owing to the dynamic amplification effect caused by short wave irregularities; the vehicle dynamic load could produce considerable water pressure that presents nonlinear spatial–temporal characteristics at the track interface, which would lead to the interface failure under a certain condition due to the coupled dynamic effect of vehicle load and water pressure.

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Zheng, Weiqi, Xingwang Sheng, Zhihui Zhu, Tianjing Luo, and Zecheng Liu. "Experimental Study on Vibration Characteristics of Unit-Plate Ballastless Track Systems Laid on Long-Span Bridges Using Full-Scale Test Rigs." Sensors 20, no. 6 (March 20, 2020): 1744. http://dx.doi.org/10.3390/s20061744.

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In this work, we present a series of hammering tests on full-scale unit-plate ballastless tracks used for long-span bridges. There is no denying that it is a new attempt to pave ballastless tracks on high-speed railway long-span bridges; the related issues deserve to be studied, and especially the vibration characteristics. Hence, the vibration characteristics and transmission rules of the ballastless track with geotextile or rubber isolation layers are explored, and the vibration reduction effect of the rubber isolation layer is analyzed. The main conclusions are as follows: the isolation layers change vibration modes and transmission characteristics of ballastless tracks; the introduction of the rubber isolation layer makes the excited vibration frequency range of the ballastless track concentrated; and the vibrations of the ballastless track with the rubber isolation layers are stable. Moreover, the rubber isolation layer has an obvious attenuation effect on vibration transmission in ballastless track structures. When the vibration is transmitted from the rail to the bridge deck, the vibration level differences of the ballastless track with rubber isolation layers are 20 dB larger than that of the ballastless track with the geotextile isolation layers. The vibration attenuation rate of the rubber isolation layer is about ten times larger than that of geotextile isolation layer.

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Xu, Qing Yuan, and Bin Li. "Study on Spatial Mechanical Characteristic of High-Speed Railway Ballastless Slab Track on Subgrade." Advanced Materials Research 503-504 (April 2012): 1010–15. http://dx.doi.org/10.4028/www.scientific.net/amr.503-504.1010.

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By using beam element to model rail, spring element to model fastener, solid element to model different components of ballastless track, contact element to model the connection between each component of ballastless track, a statics three-dimensional nonlinear finite element mechanical model for calculating the forces transmission among rail, fastening and different component of ballastless slab track on subgrade was established. Experimental data of Suining-Chongqing railway line was given to validate the calculation model. Force of ballastless slab track on subgrade under gravity load, train load, uneven settlement load, temperature gradient load as well as combined load was analyzed. Results show that: spatial forces characteristic of ballastless slab track is very notable under train load; uneven settlement load as well as temperature gradient load has significant influence on the mechanical characteristic of ballastless slab track; force of ballastless slab track increases significantly under combined load than that of under any single load.

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Bel'tyukov, Vladimir, and Andrey Andreev. "Substantiation for Maintenance and Repair System for Promising Structure of High-Speed Railway Tracks." Bulletin of scientific research results 2022, no. 3 (September 22, 2022): 128–36. http://dx.doi.org/10.20295/2223-9987-2022-3-128-136.

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Objective: To create proposals on the system of maintenance for track facilities on the sections with ballastless constructions because the experience in maintaining of such structures is absent. Methods: During the study, the analysis of being predicted life cycle cost of track structure was made. This analysis is based on the study of indicators such as defectiveness of track superstructure elements (rails, fasteners, sleepers), the analysis of being estimated costs on repairing the track using expert evaluation methods. The expert assessment provides for the application of special correction factor. This factor for each maintenance job shows the ratio of job volumes on ballastless track to job volumes on ballast railway track. Results: On the basis of cost calculations and technologies for maintenance, an analysis was pursued of overhaul schemes for sections with ballast railway and for ones with ballastless construction and conclusions were made on required overhaul scheme for a ballastless track structure. Practical importance: The study results are intended to develop a system for planning technical maintenance and repairs of a ballastless superstructure track.

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KOLOS, Alexey F., and Ksenia I. IVANOVA. "Elastic characteristics of the underrail base of a ballastless railway track." Proceedings of Petersburg Transport University 2021, no. 4 (December 2021): 469–79. http://dx.doi.org/10.20295/1815-588x-2021-4-469-479.

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Objective: Experimental determination track modulus and the coeffi cient of relative stiffness of underrail base and the rail, which are the main elastic characteristics that determine the stresses in the structural elements of track superstructure under the impact force from the train. The values of these parameters for a track with a ballast layer are well studied, in contrast to a ballastless track. Comparison of the elastic characteristics of a ballastless railway track with analogs of a track on ballast, as well as an assessment of their effect on the stress-strain state of the superstructure elements of a ballastless track. Methods: When carrying out full-scale tests, strain-gauge methods for measuring stresses in the elements of the track superstructure were used. The obtained values were processed by the methods of mathematical statistics. One statistical series included the values of stresses corresponding to one type of rolling stock, fi xed axle load and train speed, changing by no more than 10 km/h. The probability level in processing the results was taken in all cases equal to 0,994. Results: The values of track modulus and the coeffi cient of the relative stiffness of the underrail base and the rail were obtained for a ballastless structure of the RHEDA 2000 type. Practical importance: The results allow us to consider the rail as a beam lying on a solid elastic foundation in relation to the ballastless track and use the existing calculation methods for the design of ballastless track structures depending on the operating conditions.

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Liu, Jing, Yuanqing He, Jiahai Zhang, Jian Hong, Xihua Wen, Jianhong Xiao, Feng Wang, and Xinguo Zheng. "Polymer Injection Rehabilitation Technology for Lifting Differential Settlement of Turnout Ballastless Track." MATEC Web of Conferences 199 (2018): 07013. http://dx.doi.org/10.1051/matecconf/201819907013.

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The turnout ballastless track is an advanced track structure with high stability and integrity. However, due to complicated geological conditions, local groundwater level declined, and many other unavoidable objective reasons, the roadbed foundation of some railway lines appeared large uneven settlement deformation, so the above turnout ballastless track concrete structure also experienced uneven settlement accordingly. Compared with ballast track which could be restored by increasing the ballast under the sleepers simply, the smoothness of turnout ballastless track could only be restored by adjusting the thickness of the base plates of fastener system accordingly. But if continuous settlement deformation exceeded the specified allowed adjustable range of the fastener system, the smoothness of ballastless track diminished, the speed of passing trains had to be limited to ensure the safety. In order to solve this global challenging problem, we systematically studied polymer injection rehabilitation technology through a series of indoor reduced scale tests and field full scale simulations with real ballastless track concrete structure. We verified the effect of uplift rehabilitation and filling quality of grouting material through destructive experiment inspection. And combined with engineering practices and its coring samples strength test, the Polymer injection rehabilitation technology for turnout ballastless track in settlement roadbed sections had been studied and developed. This technology could restore the smoothness of railway and the adjustable range of fastening systems without affecting the normal daily operation of the railway lines. Compared with traditional cement grouting technology, this rehabilitation technology possessed significant advantages including small light construction equipment, simple logistics, flexible organization, high uplifting precision, and little additional load. This technology provided valuable technical support and useful references for restoring the smoothness of turnout ballastless track which appeared large uneven settlement deformation.

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Yan, Bin, Limei Yu, Zhe Li, and Zhiping Zeng. "Vulnerability Analysis of Catenary-Bridge-Track System." Shock and Vibration 2023 (August 29, 2023): 1–12. http://dx.doi.org/10.1155/2023/6667171.

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Continuous welded rails on bridges are extensively employed in high-speed railways, where trains are predominantly electrically powered, and the open-air catenary represents the weakest link in the system. Despite the widespread use of continuous welded rail on bridges for high-speed railways, there exists a relative dearth of research on their vulnerability, particularly regarding seismic vulnerability studies that consider the catenary, track type, and bridge collectively. The vulnerability of fasteners and catenary on bridges under the longitudinal resistance of the line was investigated by constructing a 7−32 m high-speed railway double-line simply-supported box girder bridge. It reveals, for the first time, the influence of the longitudinal resistance of the line on the vulnerability of fasteners and catenary under seismic action. The study indicates that both the fasteners’ and catenary’s vulnerability increases with the intensity of ground shaking, with the catenary being more susceptible. The longitudinal resistance of the line has a greater impact on the fasteners’ vulnerability than the catenary. When the degree of damage is minimal, the order of damage to the fasteners is the ballasted track, small resistance fastener, and ballastless track when the probability of exceedance is 5%. The ballastless track can significantly increase the probability of no damage to the fasteners, and it is recommended that the ballastless track be used when designing high-speed railway bridges in earthquake-prone regions.

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Dissertations / Theses on the topic "BALLASTLESS RAILWAY TRACK"

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Gillet, Guillaume. "Simply supported composite railway bridge: a comparison of ballasted and ballastless track alternatives : Case of the Banafjäl Bridge." Thesis, KTH, Bro- och stålbyggnad, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-36359.

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Lopez, polanco Octavio. "Comportement d’un enrobé bitumineux sollicité par des rails posés sur des appuis continus." Thesis, Ecole centrale de Nantes, 2019. http://www.theses.fr/2019ECDN0023.

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SNCF Réseau a lancé en 2015 un projet FUI (Fonds Unique Interministériel) nommé REVES (Réduction de l’Epaisseur des Voies en Exploitation Souterraine). L'objectif du projet est de développer des solutions techniques permettant d'augmenter le gabarit disponible dans les tunnels. L'idée proposée est de construire des voies sans ballast ni traverses, avec des rails posés en appui continu sur une couche d'enrobé bitumineux. Les principaux modes de dégradation des enrobés bitumineux sont la fissuration par fatigue, due à des passages rapides répétés, et l'accumulation de déformations permanentes due notamment aux chargements lourds et statiques. Cette thèse a pour objectif d'étudier le comportement en fluage des enrobés bitumineux, principalement sous chargement statique. Un modèle de comportement viscoplastique a été développé pour simuler le comportement en fluage des enrobés. Une méthode d’identification manuelle des paramètres du modèle a été mise au point. Dans le cadre du projet REVES, une grave-bitume de classe 4 a été retenue comme enrobé support. Une série d’essais triaxiaux de fluage a été réalisée sur ce matériau, grâce à laquelle les paramètres du modèle viscoplastique ont été identifiés. La loi de comportement viscoplastique a été implémentée dans Cast3m, un logiciel de calcul aux éléments finis, et des simulations du comportement en fluage d’une structure de voie ferrée correspondant aux spécifications du projet REVES ont été réalisées. Les simulations numériques montrent un comportement stable de l’enrobé dans le temps, et les niveaux de tassement permanent de la structure sont acceptables vis-à-vis des référentiels SNCF. L’utilisation d’enrobés bitumineux comme couche de structure des voies ferrées semble donc être une option viable
In 2015, SNCF Réseau launched a project named REVES (Réduction de l’Epaisseur des Voies en Exploitation Souterraine). The aim of this project is to develop technical solutions to increase the available space in tunnels. The idea is to build tracks with neither ballast nor sleepers, with the rails being continuously supported by an asphalt concrete layer. The main degradation modes for asphalt concretes are fatigue cracking, which appears due to repeated quick loads, and the accumulation of irreversible deformations, due mainly to heavy static loads. This PhD thesis’ aim is to study the creep behaviour of asphalt concretes under static loads. A viscoplastic constitutive model was developed to simulate the creep behaviour of asphalt concretes. A manual identification method for the model parameters was determined. A series of triaxial creep tests was performed on the asphalt concrete used in project REVES. Model parameters for that material were identified. The constitutive model was implemented into Cast3m, a FEM software. The creep behaviour of a railway structure such as those developed within the project was numerically simulated. Simulations show that the asphalt concrete is stable over time. The irreversible displacements are small enough as to be acceptable for SNCF standards. The use of asphalt concretes as a structure material within railways seems a viable option

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RANI, PRITI. "STATIC ANALYSIS AND PARAMETRIC INVESTIGATION OF BALLASTLESS RAILWAY TRACK FOR HIGH SPEED RAIL." Thesis, 2019. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16767.

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Increasing population and high population density of India has put intense pressure on existing railway track. The are operating at a way more than their capacity and this has strained many rail lines which leads to derailment and other mishaps. This high population density suits High speed railway. To fight with increased traffic with regard to speed and loading, the stresses variation in various components must be known accurately to evaluate useful life of each component for its life assessment. To asses this detailed analysis is necessary to develop methodology for every track component under actual loading condition. In this thesis a comprehensive study on the behavior of ballastless track structure for high speed train under stationary load is carried out. Finite element analysis is used for analysis. Different track systems are considered, and the performance of track components analyzed under stationary wheel load. Deflection and stresses are the parameters which is used to analyze the performance of track system. Parametric investigation is carried out for the variation in material properties to study the effect of behavior the track under the effect of different material. Present investigation revels increase in stiffness of rail pad and modulus of subgrade decreases the deflection in track component while increase in modulus of elasticity of concrete slab and CAM layer shows no change in terms of deflection. It is also seen that with increase in all the parameters the contact stress in the rail decreases. But in concrete slab increase in stiffness of rail pad and modulus of elasticity of concrete slab increases the equivalent stress.

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Ramos, Ana Luísa Gonçalves. "Assessment of the long term dynamic behaviour of innovative railway track solutions." Doctoral thesis, 2021. http://hdl.handle.net/1822/75551.

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Tese de doutoramento em Engenharia Civil
A investigação apresentada nesta Tese visa aprofundar o conhecimento sobre o comportamento dinâmico a curto e longo prazo da via em laje, da via balastrada e das zonas de transição (com base em estudos numéricos e experimentais), utilizando uma abordagem inovadora e integrada para analisar o problema, contribuindo para uma gestão mais eficiente da via-férrea. Primeiramente, são apresentadas as principais diferenças e semelhanças da via em laje e balastrada. Posteriormente, com o objetivo de contextualizar o estudo das zonas de transição, apresentam-se as principais causas e problemas identificados nestas áreas, as medidas de mitigação usualmente implementadas e as ferramentas numéricas utilizadas. Tendo em vista a compreensão do comportamento a curto e longo prazo das vias férreas, são apresentados os principais modelos que permitem caracterizar o módulo resiliente e a deformação permanente induzidos pelo carregamento cíclico, com principal enfoque nas abordagens empíricas. A partir deste estudo, foi selecionado o modelo capaz de prever a deformação permanente e que será utilizado nos diversos estudos apresentados. Após a compreensão acerca destas metodologias, apresenta-se uma comparação da performance da via em laje e da via balastrada a curto e longo-prazo considerando os mecanismos quasi-estático e dinâmico utilizando a abordagem 2.5D FEM-PML. As tensões do leito são comparadas e avaliadas através do SAF e a deformação permanente através do PDAF. Após este estudo numérico, foram medidos experimentalmente em laboratório, os deslocamentos da via em laje e da via balastrada ao longo de mais de três milhões de ciclos a partir da simulação da passagem do comboio em apenas alguns dias de teste usando o equipamento GRAFT-2. Foram definidos dois modelos 3D correspondentes à via em laje e balastrada com o intuito de reproduzir numericamente o ensaio laboratorial. Com base nos resultados, foram calibradas numericamente as propriedades geomecânicas e o modelo empírico de deformação permanente através do ajuste das duas curvas: numérica e experimental. A partir da calibração realizada, é apresentada a análise relativa à avaliação da performance a curto e longo-prazo de uma zona de transição entre um aterro e um túnel considerando a via em laje como sistema de via. Assim, foi desenvolvido um modelo 3D desta zona de transição de forma a simular o comportamento dinâmico da mesma, incluindo o comportamento a longo prazo da via e os seus principais efeitos na zona de transição, sendo implementada uma metodologia que simula numericamente a evolução do perfil deformado da via resultante do tráfego ferroviário.
The investigation presented in this Thesis aims at providing insight into the understanding of the short and long term dynamic behaviour of the ballastless track, the ballasted track and the transition zones (based on numerical but also experimental studies) using an innovator and integrated approach to analyse the problem, contributing to a more efficient management of railway track. Firstly, the main differences and similarities of the ballasted and ballastless tracks are presented. Posteriorly, in order to contextualize the study of the transition zones, the main causes and the problems identified in these areas are presented, the main mitigation measures usually implemented, and the numerical tools used. In order to understand the short and long-term behaviour of the railway tracks, the main models that allow characterising the resilient modulus and the permanent deformation induced by cyclic loading are presented, with the main focus on empirical approaches. From this study, the model capable of predicting the permanent deformation was selected and will be used in the various studies presented. After understanding these methodologies, a comparison between the short and long-term performance of the ballasted and ballastless tracks considering the quasi-static and dynamic mechanisms using the 2.5D FEM-PML approach is presented. The subgrade stresses are compared and evaluated through the SAF and the permanent deformation through the PDAF. After this numerical study, the slab and ballasted tracks’ displacements were measured experimentally in the laboratory over more than three million cycles from the simulation of the train passage in just a few test days using the GRAFT-2 facility. Two 3D models corresponding to the ballastless track and ballasted track were defined in order to reproduce numerically the laboratory test. Based on the results, the geo-mechanical properties of the materials were numerically calibrated, as well as, the selected empirical model of permanent deformation by adjusting the two curves: numerical and experimental. From the performed calibration, the analysis of the short and long term performance of a transition zone between an embankment and a tunnel is presented, considering the ballastless track as the railway track system. Thus, a 3D model of this transition zone was developed in order to simulate its dynamic behaviour, including the long term behaviour of the track and its main effects in the transition zone, being implemented a methodology that numerically simulates the evolution of the deformed track profile resulting from the rail traffic.
Fundação para a Ciência e a Tecnologia for the PhD grant PD/BD/127814/2016
The project In2Track2 for support this work (IN2TRACK2-826255-H2020-S2RJU-2018)

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Books on the topic "BALLASTLESS RAILWAY TRACK"

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author, Liu Xiaohong 1968, ed. Gao su tie lu wu zha gui dao hong nian tu lu ji chen jiang kong zhi yu dong li wen ding xing: Red clay subgrade settlement control and dynamic stability analysis of ballastless track of high speed railway. Beijing: Zhongguo tie dao chu ban she, 2011.

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Book chapters on the topic "BALLASTLESS RAILWAY TRACK"

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Patel, Yamika, Vikas Rastogi, and Wolfgang Borutzky. "Parametric Investigation of Ballastless Railway Track for High-Speed Railway." In Lecture Notes in Mechanical Engineering, 1045–55. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-2794-1_91.

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Lei, Xiaoyan. "Analysis of Dynamic Behavior of the Transition Section Between Ballast Track and Ballastless Track." In High Speed Railway Track Dynamics, 365–76. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2039-1_14.

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Zhu, Ying. "Design and Innovation of Ballastless Track System on Chengdu-Dujiangyan Express Railway." In Proceedings of the 1st International Workshop on High-Speed and Intercity Railways, 279–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27960-7_25.

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Wan, Zhangbo, Shuhao Li, Xuecheng Bian, and Yunmin Chen. "Field Observations on Mud Pumping of Ballastless Track in High-Speed Railway." In Lecture Notes in Civil Engineering, 445–55. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2349-6_28.

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Wan, Zhangbo, Shuhao Li, Xuecheng Bian, and Yunmin Chen. "Mud Pumping in Ballastless Slab Track of High-Speed Railway and Its Remediation." In Lecture Notes in Civil Engineering, 363–71. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77234-5_30.

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Liu, Hongming, Xuecheng Bian, Lili Yan, and Yunmin Chen. "Long-Term Performance of Ballastless High-Speed Railway Track Under the Conditions of Ground Water Level Variations." In Lecture Notes in Civil Engineering, 415–21. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77238-3_31.

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Gao, Shan, and Zhiqiang Gong. "The Problem and Strategy on Subsidence Assessment of Construction Projects under Ballastless Track in Chinese High-Speed Railway." In Proceedings of the 1st International Workshop on High-Speed and Intercity Railways, 483–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27960-7_43.

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Makwela, W. M. P., and J. Mahachi. "Field and desktop survey on failures of rail to concrete connections in South African track on concrete ballastless railway systems." In Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems, 1397–402. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003348443-227.

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Makwela, W. M. P., and J. Mahachi. "Field and desktop survey on failures of rail to concrete connections in South African track on concrete ballastless railway systems." In Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems, 483–84. London: CRC Press, 2022. http://dx.doi.org/10.1201/9781003348450-227.

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Zhou, R., W. H. Yuan, Y. D. Du, H. L. Liu, and L. H. Zhang. "Thermal Transfer Effects of CRTS II Slab Track Under Various Meteorological Conditions." In Lecture Notes in Civil Engineering, 11–16. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_2.

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AbstractWith the evolution of climate change, the thermal transfer effects of ballastless track in high-speed railways under complicated environmental conditions becomes increasingly important, governed by a number of meteorological factors, including solar radiation, ambient temperature, wind speed and direction, humidity, and many others (Matias SR, Ferreira PA, Constr Build Mater 322:126445, 2022).

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Conference papers on the topic "BALLASTLESS RAILWAY TRACK"

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Diping, Li. "Innovation design of a ballastless cable-stayed bridge with main span of 300m in high-speed railway." In IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/kualalumpur.2018.0534.

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<p>Right now, for bridges paved with ballastless track on high-speed railway with operating speed of 350km per hour in the world, the maximum span is 185m, and larger span bridges are all paved with ballasted track. The speed of the train passing through the large span bridge has to be limited to be not more than 250km per hour, which becomes a neck for high-speed trains running on the whole line. Laying ballastless track on large span bridges has become a technical problem to expand application range of ballastless track. This paper is based on a cable-stayed bridge with main span of 300m. For this bridge, prestressed concrete box girders are used for edge span and box steel-concrete composite beam is used for mid-span. Cable-stayed bridge is a flexible structure, and the stiffness must be the problem to be solved first for high-speed railway. The hybrid girder and the composite beam for the middle span can increase the deadweight stiffness. Relative to the steel bridge deck, concrete deck has larger stiffness and smaller local deformation, which makes it more conducive to high-speed traffic. The technology of laying ballastless track in the concrete slabis mature. This bridge is the first cable-stayed bridge paved with ballastless track on high-speed railway with design speed of 350km per hour in our country. This paper focuses on the conception, structure design and innovation points of the bridge. And the adaptability of high-speed railway ballastless track to the bridge is also analyzed.</p>

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Wang, P., R. Chen, and X. P. Chen. "Dynamic Assessment of Ballastless Track Stiffness and Settlement in High-Speed Railway." In 2010 Joint Rail Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/jrc2010-36115.

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Although ballastless track has such advantages as less maintenance and high stability, its big rigidity results in a strong wheel/rail dynamic interaction. In order to study a reasonable stiffness and uneven settlement limit for ballastless track and to optimize the dynamic performance of ballastless track under condition of high-speed running, vehicle together with ballastless track was viewed as an entire coupling system in this study. By adopting numerical simulation, we studied how the stiffness of foundation under rail and uneven settlement of subgrade influence the wheel/rail dynamic interaction. The results show that the reasonable stiffness of foundation under rail is within a range of 20∼30kN/mm, accordingly with a rail deformation within 1.3 ∼ 1.7mm. Through its dynamic analysis under different wavelengths and amplitudes, the uneven settlement of subgrade should be ≤L/1000.

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Lin, Hong-song, Xue-yi Liu, Hua Yan, and Juan-Juan Ren. "Long-Term Behavior and Performance of Ballastless Track Superstructure on China’s Suining-Chongqing Railway Line." In 2010 Joint Rail Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/jrc2010-36179.

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This paper briefly shows the experimental ballastless track section of Suining-Chongqing railway line in southwest China, which was designed by China Railway Eryuan Engineering Group Co. Ltd (CREEC) and was put into operation in 2007. The design speed of the experimental section amounts to 200 km/h for passenger trains and 120 km/h for freight trains, which is the first railway line built with such speed in southwest of China. The long-term observations of the performance of the ballastless track superstructures were implemented in the past three years, which are introduced in details in this paper, such as the performance of reinforced concrete slab with lattice two-block sleepers, coupled or uncoupled prefabricated slab-superstructure etc. Ballastless track superstructures’ damages are summarized and classified. In addition, causes of damaged cracks on track superstructure are discussed.

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Cheng, Ruiqi, Bin Yan, and Haoran Xie. "Track irregularity and mechanical characteristics analysis of CRTS I ballastless track under subgrade frost heaving." In IABSE Conference, Seoul 2020: Risk Intelligence of Infrastructures. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2020. http://dx.doi.org/10.2749/seoul.2020.123.

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<p>Harbin-Dalian high-speed railway is located in the northeast of China, part of which belongs to seasonal frozen area. In seasonal frozen area, the seasonal frost heaving and thaw settlement of subgrade will lead to local uneven subgrade frost heaving deformation, which will cause overarching deformation of track structure, even cause structural damage and track irregularity, and affect train safety directly. On the basis of full site investigation, taking CRTS I ballastless track in frost heaving area of Harbin-Dalian high-speed railway as research object, the spatial finite element model considering the interlayer contact characteristics was established using ANSYS finite element software. The transfer properties of track irregularity, interlayer separation characteristics and mechanical characteristics under frost heaving condition were analyzed. It provides an important reference for the design of ballastless track in cold and seasonal frozen area.</p>

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Hua Li. "Research on elasticity of ballastless track in high-speed railway." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5965290.

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Li, Qiuyi, and Luyao Li. "Intelligent construction technology of ballastless track for high-speed railway." In 3rd International Conference on Artificial Intelligence, Automation, and High-Performance Computing (AIAHPC2023), edited by Dimitrios A. Karras and Simon X. Yang. SPIE, 2023. http://dx.doi.org/10.1117/12.2685326.

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Shen, J. F., Y. D. Xu, and H. F. Li. "Establishing of track quality level management system for ballastless track of high-speed railway." In URBAN TRANSPORT 2016. Southampton UK: WIT Press, 2016. http://dx.doi.org/10.2495/ut160041.

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Ren, Juanjuan, Bernhard Lechner, and Xueyi Liu. "Economical Evaluating the Ballastless Railway Track With Consideration of LCC Viewpoint." In Eighth International Conference of Chinese Logistics and Transportation Professionals (ICCLTP). Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/40996(330)681.

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Wang, Ping, Rong Chen, and Xiao-ping Chen. "Characteristics of Track Dynamic Stiffness of Ballastless Turnout in High-Speed Railway." In Tenth International Conference of Chinese Transportation Professionals (ICCTP). Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41127(382)355.

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Zhang, Wentao, Jianxiang Zhang, Wenzhu Huang, Zhi Liu, Li Li, and Yanliang Du. "High-speed Railway Ballastless Track Slab Monitoring based on Optical Fiber Accelerometer." In 2021 IEEE 9th International Conference on Information, Communication and Networks (ICICN). IEEE, 2021. http://dx.doi.org/10.1109/icicn52636.2021.9674004.

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