高塔大跨PC斜拉桥抗震性能研究  

Study on Seismic Property of High-pylon Long-span PC Cable-stayed Bridge

作　　者：杨相展 YANG Xiangzhan

机构地区：[1]创辉达设计股份有限公司,湖南长沙410004

出　　处：《城市道桥与防洪》2022年第8期49-51,M0008,共4页Urban Roads Bridges & Flood Control

摘　　要：兰海高速贵遵复线乌江特大桥主跨布置为(40+110+320+110+40)m双塔双索面PC斜拉桥,最大塔高197.1 m。为研究该类桥梁的抗震性能,利用Midas/Civil软件建立了全桥有限元三维模型,分析了该桥的动力特性,同时利用反应谱法,对高塔的承载力和位移进行了计算。结果表明,该桥的各项指标均满足规范要求,可为此类桥梁的设计提供参考。The main span of the Wu River Super Large Bridge in Guizhou-Zunyi Complex Line of Lanzhou-Haikou Expressway is 40 m+110 m+320 m+110 m+40 m double-pylon double-plane PC cable-stayed bridge. The maximum pylon is 197.1 m high. In order to study the seismic properties of this kind of bridge, the finite element 3D model of the whole bridge is established by Midas/Civil software to analyze the dynamic characteristics of the bridge. At the same time, the bearing capacity and displacement of the high pylon are calculated by the response spectrum method. The results show that each index of this bridge all meets the requirements of the code, which can provide the reference for the design of this kind of bridge.

关 键 词：高塔 斜拉桥 抗震性能 反应谱法 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]