Additional Longitudinal Expansion Force between Continuous Welded Rails and Extra-Long Continuous Bridges of High-Speed Railway

Abstract:

In order to investigate the additional expansion force of continuous welded rails (CWR) on extra-long continuous bridges of high-speed railways, the integrative spatial finite element model of track-bridge-pier system is established with the nonlinear spring element simulating the longitudinal resistance between track and bridge. In this paper, the influences of several parameters to the additional expansion force of CWR are studied, including the different resistance models, the number of main spans, the arrangement of adjacent bridges as well as the pier’s longitudinal stiffness. Some conclusions are drawn through comparisons and analysis, which could provide valuable references for design and application of long-span continuous bridges on high-speed railways.

• Periodical: Applied Mechanics and Materials (Volumes 178-181)
• Pages: 2304-2307
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.178-181.2304
• Online since: May 2012
• Authors: Wen Shuo Liu*, Gong Lian Dai
• Keywords: Additional Longitudinal Expansion Force, Continuous Bridge, Continuous Welded Rails (CWR), High-Speed Railway (HSR)

References

[1] Fryba L: Rail International, 1985, 16(3): pp.5-24

[2] GUANG Zhongyan, GAO Huian: Railroad Continuous Welded Rails (China Railway Press, Beijing 2005), in Chinese

[3] China Academy of Railway Sciences. Codes for design on CWR of railways (draft), in Chinese

[4] XU Qingyuan, CHEN Xiufang: China Railway Science, 2003, 24(3): pp.58-63, in Chinese