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
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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.Abstract: 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.
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