PEC柱弱轴-H型钢梁节点抗震性能研究  

Research on seismic behavior of connections between PEC column weak axis and H-type steel beams

作　　者：赵根田[1] 杨春晓 朱宇[1] Zhao Gentian;Yang Chunxiao;Zhu Yu(Civil Engineering School,Inner Mongolia University of Science ＆ Technology,Baotou 014010,China;College of Energy and Water Resources,Shenyang Institute of Technology,Shenyang 113122,China)

机构地区：[1]内蒙古科技大学土木工程学院,包头014010 [2]沈阳工学院能源与水利学院,沈阳113122

出　　处：《建筑结构》2018年第21期97-102,123,共7页Building Structure

基　　金：国家自然科学基金(51268042)

摘　　要：通过对四个设置不同构造的节点试件进行低周反复试验,观察PEC柱弱轴-H型钢梁节点域设置竖向加劲肋后抗震性能的改变和节点域不设加劲肋单纯增加盖板厚度或端板厚度的抗震效果。结果表明,PEC柱弱轴-H型钢梁节点域设置竖向加劲肋后,其破坏形式和节点域关键部位应变分析结果理想,节点的承载力、延性、刚度和耗能能力明显提高,更好地满足了＂强节点＂的抗震设计要求。在不设加劲肋的情况下,单纯增加盖板厚度节点的破坏形式和节点域关键部位应变分析结果理想,节点的承载力提高,但延性和耗能能力会降低;单纯增加端板厚度节点的破坏形式没有发生改变,节点域关键部位应变分析不理想,节点承载力没有明显改变,延性和耗能能力会降低。To observe the seismic performance of PEC column weak axis and H-type steel beams with vertical stiffener and simply increasing thickness of cover plate or end plate without vertical stiffener, low cyclic loading tests were conducted for four different connections specimens. The results show that when vertical stiffener is added to the joint, the failure mode and key parts strain analysis of joints perform ideal, and the bearing capacity, ductility, stiffness and energy dissipation capacity of the joints improve significantly, it is better meet the ＂strong connection＂ seismic design requirement. When the stiffener is not setted, in the case of just increasing the thickness of cover plat, the failure mode and key parts strain analysis of joints perform ideal, and the bearing capacity of the joints improve significantly, but its ductility and energy dissipation capacity reduce. In the case of just increasing the thickness of end plat,the failure mode and key parts strain analysis of joint perform unsatisfactory, and the bearing capacity has no obvious changes and its ductility and energy dissipation capacity reduce in addition.

关 键 词：PEC柱 弱轴节点 端板连接 抗震性能 

分 类 号：TU375.2[建筑科学—结构工程]