Comparison of seismic vulnerability analysis of steel-tube concrete arch bridges at different construction stages based on the probabilistic seismic demand analysis

DOI

10.2991/978-94-6463-404-4_8How to use a DOI?

Keywords

steel-tube concrete arch bridge; construction process; probabilistic seismic demand analysis; seismic susceptibility curve

Abstract

In order to study the effects of earthquakes on the structure of large-span steel-tube concrete arch bridges under different construction states, a large-span steel-tube concrete arch bridge was selected as an actual construction case, and OpenSees was used to consider the internal forces during the actual construction process to establish a nonlinear dynamic analysis model for nine arch bridge construction phases, and 60 sets of typical impulse-type near-fault recordings were selected as inputs for ground shaking, and Probabilistic Seismic Demand Analysis was used to draw the seismic susceptibility curves of the bottom of the junction pier and the foot of the arch. The results show that: the bottom of the junction pier is less affected by the along-bridge ground vibration during the construction stage; the damage probability of the bottom of the junction pier after the closure is significantly reduced compared with that during the construction process before the closure; during the construction process, the transverse ground vibration has the greatest influence on the damage probability of the foot of the arch in terms of moderate damage, severe damage, and complete damage, which is second to that of the along-bridge ground vibration.

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  - Minhuan Liu
AU  - Qianhua Yu
PY  - 2024
DA  - 2024/04/29
TI  - Comparison of seismic vulnerability analysis of steel-tube concrete arch bridges at different construction stages based on the probabilistic seismic demand analysis
BT  - Proceedings of the 2024 3rd International Conference on Structural Seismic Resistance, Monitoring and Detection (SSRMD 2024)
PB  - Atlantis Press
SP  - 63
EP  - 69
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-404-4_8
DO  - 10.2991/978-94-6463-404-4_8
ID  - Liu2024
ER  -