中美欧圆钢管相贯节点设计方法比较

Comparison of design method of circular steel tubular welded joints in China,the United States and the EU

对中国、美国和欧盟钢管节点设计规范做了深入研究,从节点分类、破坏模式和极限承载力方面进行了详细的分析比较,并结合工程实例给出了设计建议:增大壁厚是提高节点承载力的最有效的方法之一,增大支管与主管管直径的比值可提高节点承载力。

In this paper, design specifications of circular steet tubular welded joints in China, United States and EU are studied thoroughly. With detailed analysis and comparison about the joints classification, failure mode and ultimate bearing capacity of joints, the design proposals are presented combined with practical examples. The results show that the wall thickness increased is one of the most effective way to improve the joint strength and the joint strength can be improved by increase the diametrical ratio between the branch pipe and main pipe.