大跨度人行桥的动力设计方法

Dynamic Design Method of Large Span Pedestrian Bridge

简述了人行桥人致振动的分析理论,着重介绍了德国人行桥设计指南EN03的动力设计方法。结合我国人行桥设计现状,提出大跨度人行桥动力设计的基本方法、步骤及侧向锁定的校核标准,并总结主要的振动控制方法。最后,结合兰州新区经九路纬一路天桥实例,系统说明了人行桥动力设计方法和参数取值,并提出两种有效的振动控制措施。经比选,选定调整结构受力体系作为最终的振动控制措施。

The Analysis theories of pedestrian-induced vibration of footbridges are introduced, and a detailed introduction of EN03 is presented. According to the current situation of domestic footbridge de- sign, the basic methods and steps of dynamic design are proposed. Moreover, some effective methods of vibration control are summarized. Besides, an example of footbridge in Lanzhou New Area is given to show the methods of dynamic design and ways of determining parameter values. Due to the excessive vi- bration of this bridge, two vibration control schemes are proposed, and the method of adjusting struc- ture system is chosen for its economy and effectiveness.