上海闵浦二桥钢桁梁节点的应力分析

Stress Analysis of Steel Trussed Girder Nodes of Shanghai Minpu 2nd Bridge

斜拉桥连续钢桁梁节点区域结构复杂,受力集中,是控制设计的关键。采用大型有限元软件分析了上海闵浦二桥钢桁梁节点的受力性能,计算分析节点区域的应力分布,并对应力集中提出了相关改进方法。

The structure designs of continuous steel trussed girder nodes are very complicated and it＇s the key control which requires strong bearing capacity. It is important to understand the stress distribution under ultra limit load combinations. The article have analyzed the typical steel trussed girder nodes＇ mechanical performance of Shanghai Minpu 2nd Bridge, presented their stress distribution, and gave improved methods to reduce the stress concentration. The conclusions provide reliability for bridge design and construction.