钢管桁架人行天桥大型焊接空心球支座节点分析

Analysis on Support Node of Large-sized Welded Hollow Ball on Steel-tube Truss Pedestrian Overpass

针对大型焊接空心球在珠江新城钢桁架人行天桥支座节点的首次应用,对其采用有限元软件FEA进行分析,得到该节点在正常使用状态下的应力分布规律以及节点的极限承载能力,为大型焊接空心球节点在工程上的应用提供了可靠的理论依据,并对这类节点的设计提出了建议。

Aiming at the first application of the large-sized welded hollow ball in the support node of the steel-tube truss pedestrian overpass in Zhujiang New City, the article analyzes its applied finite element software FEA, gives the stress distribution rule of this node under the normal using status and the terminal bearing capacity of the node able to provide the reliable theoretical basis for the application of the large-sized welded hollow ball node in the projects, and puts forward the proposals for the design of this node.