H型钢柱梁节点试件的抗震性能分析

Analysis on the Seismic Performance of Column-beam Joint Specimens Consisting of H-shaped Steel

为明确不同节点域强度H型钢柱梁节点试件的抗震性能,通过5组不同节点域强度H型钢柱梁节点试件的加载试验,从试件的滞回曲线、骨架曲线、承载能力、刚度退化及能量耗散系数等多方面开展研究。结果表明:随着节点域强度提升,试件的屈服强度和初始刚度提升,而变形能力递减。节点域与梁强度比Rpjb在0.8~0.95范围内时,试件的延性较好;同时,Rpjb≥0.8的各试件的最大承载力值接近;建议Rpjb控制在0.9左右。

In order to the clear the seismic performance of column-beam joint specimens consisting of H-shaped steel,which the strength of panel zone were different,5 groups of loading tests were conducted on these specimens,and the studies such as hysteresis curve,skeleton curve,bearing capacity,stiffness degradation and energy dissipation coefficient of the specimens were carried out.The results show that with the growth of the strength of panel zone,the yield strength and the initial stiffness are increasing,while the deformability is decreasing.When the panel zone-beam strength ratio R pjb is in the range of 0.8 and 0.95,the specimen has good ductility.Meanwhile,when R pjb ≥0.8,the maximum bearing capacity of each specimen is close.It is suggested that the value of R pjb should be controlled around 0.9.