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Relevant bibliographies by topics / Continuous welded rails. Structural stability

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Academic literature on the topic 'Continuous welded rails. Structural stability'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Continuous welded rails. Structural stability"

1

Cai, Xiaopei, Wanli Liu, Kaize Xie, Wenjun Zhu, Xiyuan Tan, and Yongjie Gao. "Layout Optimization of Rail Expansion Joint on Long-Span Cable-Stayed Bridge for High-Speed Railway." Advances in Civil Engineering 2020 (July 27, 2020): 1–15. http://dx.doi.org/10.1155/2020/8855140.

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Continuous welded rail (CWR) has been widely applied to the Chinese high-speed railways. It is interesting to reduce the effect of rail longitudinal force on the long-span cable-stayed bridges. Taking the pile-soil interaction into account, the finite element model of CWR on the long-span cable-stayed bridge is established based on the bridge-track interaction theory. The rail longitudinal force can be reduced and the track stability can be improved significantly by installing Rail Expansion Joint (REJ). The layout scheme of REJ plays a controlling role on designing CWR on bridges. Results sho

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2

Yun, Kyung-Min, Beom-Ho Park, Hyun-Ung Bae, and Nam-Hyoung Lim. "Suggestion for allowable additional compressive stress based on track conditions." Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 232, no. 5 (2017): 1309–25. http://dx.doi.org/10.1177/0954409717720838.

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A continuous welded rail has immovable zones due to its structural characteristics. In an immovable zone, thermal expansion and contraction of rails are restricted when the temperature changes, thereby causing excessive axial force on the rail. When the immovable zone of the continuous welded rail is located on a bridge, additional stress and displacement occur through track–bridge interactions. Additional stress and displacement of the rail compared to the embankment area are restricted when constructing the bridge under the continuous welded rail track to prevent problems with the track–brid

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3

Illarionova, Lilia A., and Alexey A. Loktev. "The influence of wave processes on the reinforcement of the base plate of a ballast-free railway track." Vestnik MGSU, no. 12 (December 2020): 1632–43. http://dx.doi.org/10.22227/1997-0935.2020.12.1632-1643.

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Introduction. Since nowadays ballast-free track structures are most often used in combination with continuous welded track solutions for organizing a rail string, it should be emphasized that stresses arising in the rail string affect the stress-strain state of the entire construction of the track superstructure; therefore, it is necessary to monitor the current state of the continuous welded track. Nevertheless, kinks are formed and assembled rails and sleepers lose stability during the operational period of a continuous welded track, and methods are needed to determine the pre-failure condit

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4

Palant, Olena, Dmytro Plugin, Andrii Plugin, Alexey Lobiak, and Oleksii Pluhin. "Use of liners made of concrete on quartz aggregates and polyurethane composition to reduce vibration, noise and improve the stability of tramway track." MATEC Web of Conferences 230 (2018): 03014. http://dx.doi.org/10.1051/matecconf/201823003014.

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The theoretical basis of reduction of thermal deformations of the ballastless continuous welded track has been developed. The design of the track with integrated rails has been improved by using a special concrete liner of optimal composition with quartz fillers and aggregates and two-component polyurethane. The method of calculating the concrete composition with optimal strength and coefficient of linear thermal expansion together with optimal structural characteristics, To reduce the temperature stresses in the rails, liners should be made of concrete with quartz fillers and aggregates which

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5

Bao, Yulin, and Ernest J. Barenberg. "Three-Dimensional Nonlinear Stability Analysis of Tangent Continuous Welded Rail Track Under Temperature and Mechanical Loads." Transportation Research Record: Journal of the Transportation Research Board 1584, no. 1 (1997): 31–40. http://dx.doi.org/10.3141/1584-05.

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Results from applications of the three-dimensional continuous welded rail (CWR) track model ILLIBUCKLE to a tangent CWR track with nonlinear resistance and lateral geometric imperfections are presented. Stability analysis is made of the tracks under temperature and mechanical loads by using temperature lateral-displacement curves. Tangent CWR track stability is highly sensitive not only to ballast lateral resistance and geometric imperfections of the the initial track but also to the vertical rotational stiffness in rail-pad fastener systems and vehicle lateral loads. It is concluded that not

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6

Polevoi, E. V., Yu N. Simonov, N. A. Kozyrev, R. A. Shevchenko, and L. P. Bashchenko. "Phase and structural transformations when forming a welded joint from rail steel. Report 2. Isothermal diagram of decomposition of supercooled austenite of R350LHT rail steel." Izvestiya. Ferrous Metallurgy 64, no. 4 (2021): 266–72. http://dx.doi.org/10.17073/0368-0797-2021-4-266-272.

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An isothermal diagram of decomposition of supercooled austenite of R350LHT steel was constructed based on the results of dilatometric, metallographic and hardness analysis of this decomposition during continuous cooling and under isothermal conditions. When comparing the thermokinetic and isothermal diagrams, it was found that the thermokinetic diagram plotted during continuous cooling shifts downward and to the right in comparison with the isothermal diagram. This result is fully consistent with the known regularities. During the research, the critical points of R350LHT steel were determined:

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7

Karpuschenko, N. I., I. K. Ardyshev, and R. S. Ermakhanova. "Stability of Continuous Welded Rails to Lateral Shear under the Train." Вестник Сибирского государственного университета путей сообщения, no. 1 (2021): 57–64. http://dx.doi.org/10.52170/1815-9262_2021_56_57.

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8

Sung, Deok-Yong, and Sung-Cheon Han. "Fatigue life evaluation of continuous welded rails on concrete slab track in Korea high-speed railway." Advances in Structural Engineering 21, no. 13 (2018): 1990–2004. http://dx.doi.org/10.1177/1369433218762501.

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There is a rapidly increasing demand for continuous welded rails. Continuous welded rails provide a more suitable installation on concrete slab tracks and more rapid and smooth movement and reduce overall maintenance cost. During the relatively short period in which concrete slab tracks have been used in Korea, there has been no documented case of rail fracture caused by repeated loading. This makes the evaluation of rail fatigue life using field data more difficult. In this study, the rail bending stress developed during high-speed train operation is obtained through analysis of vehicle–track

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9

Strauss, Alfred, Martina Šomodíková, David Lehký, Drahomír Novák, and Konrad Bergmeister. "NONLINEAR FINITE ELEMENT ANALYSIS OF CONTINUOUS WELDED RAIL–BRIDGE INTERACTION: MONITORING-BASED CALIBRATION." Journal of Civil Engineering and Management 24, no. 4 (2018): 344–54. http://dx.doi.org/10.3846/jcem.2018.3050.

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Continuous welded rail is of high interest to operators of railway infrastructure facilities because of the reduced maintenance work and better train driving dynamics it offers. However, the application of continuous welded rail, in particular associated with its interaction with the superstructures of e.g. bridges, requires special caution with regard to the rail stresses in the transition area between the structure and the free field. These stresses are not only influenced by thermal deformations of the bridges but also by the clamp systems between the rails and e.g. the bridge. In general,

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10

Magued, Mohammed H. "Rail–structure interactions for short span railway and transit bridges." Canadian Journal of Civil Engineering 15, no. 2 (1988): 157–66. http://dx.doi.org/10.1139/l88-022.

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The longitudinal movement of a structure supporting continuously welded track relative to that track results in interactive forces (interactions) being induced in both the rails and the structure. The differential movement may arise from thermal effects, volume changes in the structure, substructure deformations, or other factors. These resulting interactions are the focus of this paper.A design tool allowing the estimation of the limiting values of these interactions is presented for use by track and structure designers.The presentation begins with a discussion of the thermal stresses and mov

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Conference papers on the topic "Continuous welded rails. Structural stability"

1

Mao, Jian-hong, Jun Xiang, and Kai Gong. "Mechanism and Application of a New Guard Rail for Improving the Stability of Small Radius Curve Tracks with Continuous Welded Rails." In 2013 Fourth International Conference on Digital Manufacturing & Automation (ICDMA). IEEE, 2013. http://dx.doi.org/10.1109/icdma.2013.184.

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Pucillo, Giovanni Pio. "On the Effects of Multiple Railway Track Alignment Defects on the CWR Thermal Buckling." In 2018 Joint Rail Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/jrc2018-6205.

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The lateral stability of the continuous welded rail (CWR) depends on a number of parameters which contribute to the progressive loss of the initial alignment of the track and its consequent predisposition to deform sideways, gradually or sharply, with serious risks for the safety both of passengers and operators. Different types of initial lateral defect, in terms of shape and size, are introduced by many authors in their own numerical and analytical model, but essentially all of them can be traced back — except for small “personalizations” — to the model proposed by Andrew Kish, who hypothesi

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