Open Access

ARTICLE

Simulation and Traffic Safety Assessment of Heavy-Haul Railway Train-Bridge Coupling System under Earthquake Action

by Liangwei Jiang^1,2, Wei Zhang², Hongyin Yang^1,2,3,*, Xiucheng Zhang¹, Jinghan Wu², Zhangjun Liu²

1 Engineering Research Center of Disaster Prevention and Mitigation of Southeast Coastal Engineering Structures (JDGC03), Fujian Province University, Putian, 351100, China
2 School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan, 430073, China
3 Hubei Provincial Engineering Research Center for Green Civil Engineering Materials and Structures, Wuhan, 430073, China

* Corresponding Author: Hongyin Yang. Email:

(This article belongs to the Special Issue: Health Monitoring and Rapid Evaluation of Infrastructures)

Structural Durability & Health Monitoring 2024, 18(6), 835-851. https://doi.org/10.32604/sdhm.2024.051125

Received 28 February 2024; Accepted 20 May 2024; Issue published 20 September 2024

Abstract

Aiming at the problem that it is difficult to obtain the explicit expression of the structural matrix in the traditional train-bridge coupling vibration analysis, a combined simulation system of train-bridge coupling system (TBCS) under earthquake (MAETB) is developed based on the cooperative work of MATLAB and ANSYS. The simulation system is used to analyze the dynamic parameters of the TBCS of a prestressed concrete continuous rigid frame bridge benchmark model of a heavy-haul railway. The influence of different driving speeds, seismic wave intensities, and traveling wave effects on the dynamic response of the TBCS under the actions of the earthquakes is discussed. The results show that the bridge displacement increase in magnitude in the lateral direction is more significant than in the vertical direction under the action of an earthquake. The traveling wave effect can significantly reduce the lateral response of the bridge, but it will significantly increase the train derailment coefficient. When the earthquake intensity exceeds 0.2 g, the partial derailment coefficient of the train has exceeded the limit value of the specification.

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Keywords

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