圆钢管柱套筒节点试验研究

Experimental study on sleeve joints of round steel tubes

通过设置四个不同的节点试件进行低周反复试验,观察四个节点的不同力学特性,重点分析滞回曲线、骨架曲线。对比环板节点和套筒节点试验结果可以发现,新型的套筒节点的各项力学性能非常理想,不劣于传统的环板节点。对比不同套筒厚度的套筒节点试验结果,发现随着套筒厚度的增加,套筒节点有更好的延性、塑性变形能力和耗能能力。套筒节点的性能提升幅度和套筒厚度不是正比关系,当套筒厚度较小时,随着套筒厚度增加,节点性能提升幅度较大。当套筒厚度较大时,随着套筒厚度增加,节点性能提升幅度较小。从经济方面考虑,建议套筒厚度取10mm。

By setting four different node test pieces for low-cycle repeated test, the different mechanical properties of the four nodes were observed, and the hysteresis curves and skeleton curves were emphatically analyzed. Comparing the test results of the ring plate joint and the sleeve joint, it can be found that the mechanical properties of the new sleeve joint are very satisfactory and are not inferior to the traditional ring plate joint. Comparing the test results of the sleeve joints with different sleeve thicknesses, it is found that with the increase of the thickness of the sleeve, the sleeve joints have better ductility, plastic deformation ability and energy consumption. The performance improvement of the sleeve joint is not proportional to the thickness of the sleeve. When the thickness of the sleeve is small, the performance of the joint increases greatly as the thickness of the sleeve increases. When the thickness of the sleeve is large, as the thickness of the sleeve increases, the performance of the node is less increased. From the economic point of view, the thickness of the sleeve should be 10 mm.