斜拉索火致损害及换索模拟计算分析

摘要

以某斜拉桥拉索火灾事故为背景,通过选取钢绞线拉索过火损伤变量模型,建立该桥的有限元模型进行模拟计算,对拉索火灾前后和换索修复前后斜拉桥的工作性能进行了比较,可为换索施工提供理论依据.%In view of fire damage to the cable of a bridge, the finite element model is established based on random model of steel strand with fie damage. The service behaviors of the bridge before and after cable fire and before and after the stayed-cable is changed are compared, which may provide theory reference for the replace ment of cable.