运用结构优化理论进行悬索桥空缆状态下的线形分析  

The linear analysis of suspension bridge at cable finished stage based on optimized design of structure

作　　者：林智寰[1] 陈誉[1,2] 杨青山 

机构地区：[1]华侨大学土木工程学院,福建泉州362021 [2]同济大学土木工程学院,上海200092 [3]中海油基建管理(上海)有限责任公司,上海200335

出　　处：《郑州轻工业学院学报（自然科学版）》2011年第5期13-17,共5页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：国家自然科学基金项目(51008133);福建省自然科学基金项目(2010J01299);大连理工大学海岸和近海工程国家重点实验室基金项目(LP0705);泉州市第一批技术研究与开发项目(重点项目)(2009Z48)

摘　　要：为了获取精确的成桥状态下悬索桥主缆线形及主缆的内力分布,引入结构优化理论,运用AN-SYS有限元分析软件中的结构优化工具,计算出成桥状态下主缆的内应力,再通过倒拆法得到主缆空缆状态下的线形.将运用该方法得到的空缆线形与运用非线性数值分析法得到的线形进行对比,结果表明,该方法既能快速求出主缆空缆状态下的线形,又能在精度上满足工程实际的需求.A method of getting extract stress distribution and shape of suspension bridge at the finished dead state was provided.First of all the theme of optimized design of structure and the tool of optimized design of structure in the ANSYS is used to find the extract stress distribution at the finished dead state,then the shape of suspension bridge at cable finished stage was gotten by using reverse disassembly method.From comparing with the results by using numerical-analytical,it is found that this method can quickly find the shape of suspension bridge at cable finished stage and can meet the requirement of engineering.

关 键 词：悬索桥空缆状态 数值分析法 非线性有限元 结构优化设计 

分 类 号：TU392.3[建筑科学—结构工程]