Dynamic analysis of coupled wind-train-bridge system considering tower shielding and triangular wind barriers

Nan Zhang, Guanghui Ge, He Xia and Xiaozhen Li

Abstract

A method for analyzing the coupled wind-vehicle-bridge system is proposed that also considers the shielding effect of the bridge tower with triangular wind barriers. The static wind load and the buffeting wind load for both the bridge and the vehicle are included. The shielding effects of the bridge tower and the triangular wind barriers are incorporated by taking the surface integral of the wind load. The inter-history iteration is adopted to solve the vehicle-bridge dynamic equations with time-varying external loads. The results show that after installing the triangular wind barriers in the area of the bridge tower, the bridge response and the vehicle safety factors change slightly. The peak value of the train car body acceleration is significantly reduced when the wind barrier size is increased.

Key Words

suspension bridge; vehicle-bridge interaction; wind load; wind barrier

Address

Nan Zhang:School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China; Beijing Key Laboratory of Structure Wind Engineering and Urban Wind Environment, Beijing 100044, China Guanghui Ge and He Xia:School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China Xiaozhen Li:School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China

← Back to Volume 21, No. 3