The relationship between the seismic bending moment of pier bottom and the initial lifting bending moment of railway self-centering pier

DOI

10.2991/978-94-6463-398-6_43How to use a DOI?

Keywords

Railway; Self-centering pier; Seismic bending moment; Initial lifting moment; Numerical fitting

Abstract

In order to explore the relationship between the maximum seismic bending moment at the bottom of a railway self-repositioning pier and its initial lifting moment, a finite element analysis model is established based on OpenSees platform on a 32m railway simple supported beam bridge as the engineering background, and 300 seismic waves are input, among which 251 seismic waves cause the structure to lift away. The relationship between the ratio of the maximum seismic bending moment and the initial lifting bending moment at the bottom of the pier under 251 seismic waves and the peak acceleration of the input ground motion is obtained, and the data is fitted by polynomial function. The results show that the maximum seismic bending moment at the bottom of the pier increases with the increase of the peak seismic acceleration, and the theoretical formula of the dynamic magnification factor β of the bending moment at the bottom of the railway self-repositioning pier when the pier is lifted from the rock under strong earthquake has high accuracy. The research results can provide some theoretical reference for seismic design of self-resetting pier.

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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TY  - CONF
AU  - Zhijie Zhu
AU  - Xiushen Xia
AU  - Haoran Zhu
AU  - Xin Qiao
AU  - Heng Zhang
AU  - Xudong Zhang
PY  - 2024
DA  - 2024/04/24
TI  - The relationship between the seismic bending moment of pier bottom and the initial lifting bending moment of railway self-centering pier
BT  - Proceedings of the 2023 5th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2023)
PB  - Atlantis Press
SP  - 454
EP  - 463
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-398-6_43
DO  - 10.2991/978-94-6463-398-6_43
ID  - Zhu2024
ER  -