杨浦大桥抖振及控制分析

Analysis of Buffeting Response and its Control of Yangpu Bridge

本文基于Scanlan教授的大跨桥梁抖振分析理论,对杨浦大桥在施工及运营状态的抖振进行了分析。结果表明,该桥在这两个状态下的抖振均较大。根据这一情况,本文又进行了被动TMD对大跨桥梁抖振控制的研究,并对杨浦大桥的抖振控制作了计算。计算结果表明,被动TMD对杨浦大桥的抖振具有较好的抑制效果。

A partly modified Scanlan Method is used for calculating the buffeting response of Yangpu Bridge in the stages of erection and operation.The results show that the buffeting response in the 2 stages are both large. In view of this, a research on TMD for controlling buffeting of bridges is made, and the results are applied to the analysis of Yangpu Bridge. TMD can effective ly reduce the buffeting of Yangpu Bridge.