Stochastic dynamic analysis of the train-track-bridge system under tridirectional spatially correlated ground motions
- Authors
- Ma, Chunyan; Choi, Dong-Ho
- Issue Date
- Sep-2022
- Publisher
- Elsevier Ltd
- Keywords
- Incoherence effect; Non-uniform seismic excitation; Pseudo-excitation method; Random vibration; Seismic response; Wave passage effect
- Citation
- Soil Dynamics and Earthquake Engineering, v.160, pp.1 - 15
- Indexed
- SCIE
SCOPUS
- Journal Title
- Soil Dynamics and Earthquake Engineering
- Volume
- 160
- Start Page
- 1
- End Page
- 15
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/191165
- DOI
- 10.1016/j.soildyn.2022.107324
- ISSN
- 0267-7261
- Abstract
- Due to seismic spatial variation and the correlation between tridirectional ground motions, the random vibrations of the train-track-bridge system are different from those under uniform seismic excitations. To study this difference, a high-speed train traversing a multi-span bridge under both track irregularities and tridirectional spatially correlated ground motions is investigated by using the pseudo-excitation method. Through calculating stochastic dynamic responses of the system, the influences of seismic spatial variation and the correlation between tridirectional ground motions are evaluated for the maximum standard deviations of bridge accelerations, train accelerations, the wheel-rail contact force, and the offload factor. The results show that these influences significantly affect the stochastic dynamic responses of the train-track-bridge system. Therefore, they cannot be ignored in the stochastic dynamic analysis of the train-track-bridge system under multi-support seismic excitations.
- Files in This Item
-
Go to Link
- Appears in
Collections - 서울 공과대학 > 서울 건설환경공학과 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.