X型钢管相贯节点承载力试验研究

ccording to the circular tubular X joints, the current design code is too conservative, resulting in the waste of materials, so it needs to be on the node of the new design of full-scale test on the experiment of its bearing capacity. Test in the nodes are prone to failure region layout of strain gauge, and the application of non-contact strain gauge on the key observation.This paper introduces the design scheme of node load. According to the test results, the failure modes of specimens are analyzed, and in the vicinity of intersecting line regions were analyzed to obtain the distribution of stress along the line of intersection. The test results show that all nodes have good bearing capacity and enough safety storage and node design of safe and reliable. This node main branch size and stiffness are the same, in charge of tension, although the compression case, damage occurred in the head on.