Vulnerability Analysis of Seismic High Speed Rail Simple Girder Bridges in Near-Fault Strong Seismic Zones

DOI

10.2991/978-94-6463-780-9_46How to use a DOI?

Keywords

near-fault earthquakes; high-speed rail simple girder bridges; pile-soil interaction; beam-rail integration; seismic vulnerability

Abstract

In order to further study the vulnerability of simply supported girder bridges for high-speed railroads under the seismic effects in the near-fault strong seismic zone, a finite element model of simply supported girder bridges for high-speed railroads with a span of 6 × 32m is established based on the finite element software by considering pile-soil interactions and track constraints as an example. Stress and displacement response analysis of 15m pier height bridge rails was carried out to verify the accuracy of the model, and the effects of near-fault earthquakes on the sensitivity of 5m, 10m and 15m pier height simple supported girder bridges of high speed railroads were investigated. The results show that 0.3g can be used as the critical value for elastic-plastic damage of bridges with pier heights of 15m and below. When the PGA is located between 0.1g and 0.3g, the main damage forms of the pier and pile foundation of HSR simply supported girder bridge are slight damage and moderate damage. When the PGA is greater than 0.3g, the bridge piers and pile foundations start to show severe damage and complete damage. The effect of the near-fault earthquake on the piers is more significant, and the piers are damaged before the piles. The damage state of bridge piers under earthquakes should be emphasized in the actual project.

Copyright

© 2025 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  - Xu Chen
AU  - Zhidong Duan
AU  - Liang Li
PY  - 2025
DA  - 2025/07/03
TI  - Vulnerability Analysis of Seismic High Speed Rail Simple Girder Bridges in Near-Fault Strong Seismic Zones
BT  - Proceedings of the 2025 International Conference on Engineering Management and Safety Engineering (EMSE 2025)
PB  - Atlantis Press
SP  - 509
EP  - 517
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-780-9_46
DO  - 10.2991/978-94-6463-780-9_46
ID  - Chen2025
ER  -