（1 中国建筑设计院有限公司， 北京 100044； 2 上海路博减振科技股份有限公司， 上海 201401）

［摘要］某工程连桥最大跨度达62m，结构总高度仅为2.4m，采用空间钢桁架结构。由于连桥竖向自振频率与步行频率接近，为满足结构安全及舒适性使用要求，采用TMD系统进行减振设计。实测结果表明，TMD减振效果良好，可为类似工程参考。

［关键词］大跨度连桥； 舒适度； TMD

中图分类号： TU397.8 文献标识码： A文章编号：  1002-848X(2016)S1-0510-04

Structural design of a large span footbridge

Wang Chunguang1, Liu Jiantao1, You Tianzhi1, Wang Yang2

(1 China Architecture Design & Research Group, Beijing 100044, China；

2 Shanghai Rubber Vibration Reduction Technology Inc., Shanghai 201401, China)

Abstract: The span of a footbridge of a building is larger than 62 meters, the structural height of the footbridge is only 2.4 meters, spatial steel truss is used. As the natural vertical frequency is very close to the walking frequency. The TMD is used to decrease the walking-caused vibration for structural safety and walking comfortable. The measured results show that the effect of TMD is great. This article can be refer for similar design.

Keywords: large span footbridge; comfortable degree；TMD

作者简介：王春光，教授级高级工程师，一级注册结构工程师，Email:wangcg@cadg.cn。