期刊
VEHICLE SYSTEM DYNAMICS
卷 59, 期 10, 页码 1484-1508出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00423114.2020.1763406
关键词
Pier settlement model; train-track-bridge interaction; rail deformation; static analysis; dynamic analysis
资金
- Basic Natural Science and Frontier Technology Research Program of the Chongqing Municipal Science and Technology Commission [cstc2018jcyjAX0271]
- Science and Technology Research Programof ChongqingMunicipal Education Commission [KJQN201900719]
- State Key Laboratory of Traction Power [TPL1901]
- China Postdoctoral Science Foundation [2019M650236]
- MOE Key Laboratory of High-speed Railway Engineering [2017-HRE-01]
- Chongqing Key Laboratory of Railway Vehicle System Integration and Control [CKLURTSIC-KFKT-201804]
- Project of Fund Cultivation of Chongqing Jiaotong University [2018PY14]
This paper investigates the influence of pier settlement on the train-track-bridge coupled system and suggests application ranges for different pier settlement models. Results show that, from a static perspective, SPSM and MPSM exhibit similarity, with results obtained from MPSM being a superposition of results calculated by SPSM, and MPSM having lower computational efficiency.
Pier settlement is unavoidable in bridge construction and operation processes, thus the influence of pier settlement on the train-track-bridge coupled system becomes a classic and meaningful topic in railway engineering. Aiming at this practical problem, three interesting works are conducted in this paper: (a) a detailed single-pier settlement model (SPSM) is developed with analytic method; (b) a multi-pier settlement model (MPSM) is also analytically established in detail; and (c) the influences of SPSM and MPSM on the train-track-bridge system are investigated and compared. On this basis, the application ranges for different pier settlement models are suggested from static and dynamic perspectives. Results show that, from static perspective, SPSM and MPSM have the similarity, and results obtained from MPSM are the superposition of results calculated by SPSM. Computational efficiency of MPSM is lower than that of SPSM due to the large model scale. SPSM is suggested to study the static performance of the coupled system and to perform parametric analysis in dynamic investigation, while MPSM is suggested to investigate the system dynamics in frequency-domain.
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