高塔大跨PC斜拉桥抗震性能研究

摘要:

兰海高速贵遵复线乌江特大桥主跨布置为40+110+320+110+40m双塔双索面PC斜拉桥，最大塔高197.1m，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，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，各项指标满足规范要求，可为此类桥梁的设计提供参考。

Abstract:

In order to study the seismic behavior of this type of bridge, a three-dimensional finite element model of the bridge is established by using the Midas civil software. The main span of the Wu River Super Large Bridge is 40 + 110 + 320 + 110 + 40 m double pylon and double cable plane PC cable-stayed Bridge with a maximum tower height of 197.1 m, the dynamic characteristics of the bridge are analyzed, and the bearing capacity and displacement of the tower are calculated by the response spectrum method.The results show that the indexes meet the requirements of the code, which can provide reference for the design of this kind of bridge.