塔梁固结斜拉桥抗震性能分析

摘要

Taking a typical cable-stayed bridge with tower beam consolidation as studying object,establish 3-D finite element model and analysis its natural vibration,the seismic performance of the main tower with different combinations of portrait + vertical and orientation + vertical is ana-lyzed when the cable-stayed bridge with single tower is on the level of different earthquake,so as to provide some reference for the seismic design of the single tower cable-stayed bridge.%以某采用塔、梁固结的独塔斜拉桥工程实例为背景，建立了该桥的空间有限元模型，并且进行了桥梁的模态分析，在不同地震水平作用下，分别采用纵向+竖向和横向+竖向两种作用组合，分析了主塔的结构抗震性能，为独塔斜拉桥的抗震设计提供参考。