人行桥人致振动分析与减振设计

摘要

The paper takes a steel truss footbridge with 100 meters' span as the example to introduce the process of the analysis of pedestrian-induced vibration. Through the finite element software of Midas Civil, the pedestrian-induced incentive on the footbridge caused by the stochastic walk situation and synchronous adjustment effect of the people is simulated. According to the analysis, the installation of TMD system is put forward to control the vibration, it receives a good effect.%本文以100米跨径的钢桁架人行桥为例，介绍了人行桥人致振动分析的一般过程。通过Midas Civil有限元软件，模拟了人群在随机步行状态下以及考虑人群同步调效应情况下对人行桥的人致激励作用。根据分析结果，提出安装TMD系统对该桥进行振动控制，并得到了很好的减振效果。