拉索不同程度损伤及破断对索道桥力学性能的影响分析  

The Influence Analysis of Mechanical Property of Cable Bridge Caused by Different Suspension Cable Injury

作　　者：郑益龙 

机构地区：[1]中铁一院新疆铁道勘察设计院有限公司桥隧处桥二所,乌鲁木齐830011

出　　处：《特种结构》2011年第2期75-79,74,共6页Special Structures

摘　　要：本文以甘肃省某索道桥作为背景,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了修正。在此基础上,展开不同位置拉索损伤的结构分析,得出不同位置拉索破断对索道桥的影响规律。最后,对拉索损伤原因进行了总结分析,分析结果可为同类索道桥的设计与养护提供参考。The spatial computation model of a cable bridge was established,taking one cable bridge in GanSu Province as background.Combined with practical bridge static test results,the correction of finite element model was carried on.On this basis,the structural analysis of suspension cable injury at different position was going on.The influence rule of suspension cable bridge sling breakage at different position was got.Finally,the causes of suspension cable injury were analyzed and summarized.Analysis results could be the reference for the similar cable bridge design and maintenance.

关 键 词：索道桥 拉索损伤 力学性能 最不利位置 

分 类 号：U441[建筑科学—桥梁与隧道工程]