悬吊索损伤下索道桥结构分析

Analysis on Structure of Suspension Bridge under Damage of Suspension Cable

索道桥是以钢丝绳为主要受力构件,钢横梁及木板等作为局部受力构件的一种悬索体系桥梁。该文以甘肃省某索道桥作为背景,利用Midas/Civil建立空间计算模型,再结合实桥静力测试结果对有限元模型进行修正,在此基础上展开不同位置悬吊索损伤的结构分析,得出不同位置悬吊索破断对索道桥的影响规律。并对悬吊索损伤原因进行分析总结。分析结果可为同类索道桥的设计与养护提供参考。

The suspension bridge is a cable suspension bridge of the steel cable as the main stressed component and the steel cross beam and wood block as the local stressed components.Taking a suspension bridge of Gansu Province as the background,the article utilizes Midas/Civil to set up the spatial computation model and applies the static testing result of the bridge to amend the finite element model.On this basis,the article carries out the structural analysis on the damage of the suspension cable in the different positions,gives the influence law of the break of suspension cable in the different positions on the suspension bridge,and analyzes and summarizes the damage cause of suspension cable.The analysis result can provide the reference for the design and maintenance of the same suspension bridges.