Proceedings of the 2024 5th International Conference on Civil, Architecture and Disaster Prevention and Control (CADPC 2024)

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Effect of Subgrade Boundary on Seismic Response of the High-Speed Railway Track-Bridge System

Authors
Biao Wei1, 3, Shuaijie Yuan2, 3, *, Lizhong Jiang1, 3, Yujie Yu1, 3
1National Engineering Research Center of High-Speed Railway Construction Technology, Changsha, 410075, China
2China Railway Group Limited, Beijing, 100039, China
3School of Civil Engineering, Central South University, Changsha, 410075, China
*Corresponding author. Email: 234811027@csu.edu.cn
Corresponding Author
Shuaijie Yuan
Available Online 13 June 2024.
DOI
10.2991/978-94-6463-435-8_24How to use a DOI?
Keywords
the High-Speed Railway Track-Bridge System; Longitudinal constraint effect; the Subgrade Structure; Seismic Response
Abstract

As a crucial component of the boundary conditions on both sides of the high-speed railway track-bridge system, the seismic response of the flexible subgrade structure is markedly different from that of the bridge structure. This difference has been increasingly pronounced with the widespread implementation of constant welded rail technology in the construction of high-speed railway bridges. This study delves into the bridge system incorporating the CRTSII ballastless track structure, specifically examining the effect of the longitudinal constraint range of the subgrade structure on the bridge system’s seismic response under various seismic intensities. The findings reveal that the subgrade structure profoundly impacts the bridge system’s longitudinal stiffness, whereas its effect on transverse stiffness is comparatively marginal. It is observed that the impact on the system stabilizes as the subgrade structure extends to 130 meters. Therefore, a 130-meter length of the subgrade structure can be used as a feasible reference value for the range of bridge-subgrade coupling.

Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2024 5th International Conference on Civil, Architecture and Disaster Prevention and Control (CADPC 2024)
Series
Atlantis Highlights in Engineering
Publication Date
13 June 2024
ISBN
10.2991/978-94-6463-435-8_24
ISSN
2589-4943
DOI
10.2991/978-94-6463-435-8_24How to use a DOI?
Copyright
© 2024 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Biao Wei
AU  - Shuaijie Yuan
AU  - Lizhong Jiang
AU  - Yujie Yu
PY  - 2024
DA  - 2024/06/13
TI  - Effect of Subgrade Boundary on Seismic Response of the High-Speed Railway Track-Bridge System
BT  - Proceedings of the 2024 5th International Conference on Civil, Architecture and Disaster Prevention and Control (CADPC 2024)
PB  - Atlantis Press
SP  - 206
EP  - 216
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-435-8_24
DO  - 10.2991/978-94-6463-435-8_24
ID  - Wei2024
ER  -