角钢连接的半刚性钢框架抗震性能试验研究  

Experimental research on seismic behavior of steel frame with top and seat angle with double web angles semi-rigid connections

作　　者：王来[1] 周楠楠[1] 王国兵[1] 

机构地区：[1]山东科技大学土木建筑学院,青岛266510

出　　处：《建筑结构》2009年第5期54-58,共5页Building Structure

摘　　要：在实际工程中,钢框架连接性能往往介于刚性节点和铰接节点之间,呈半刚性连接。采用拟静力试验方法进行了角钢连接的半刚性连接钢框架在低周往复荷载作用下抗震性能的试验,研究了带腹板双角钢、顶底角钢半刚性连接钢框架在周期循环荷载作用下的滞回性能、延性和破坏机理等,为钢结构抗震设计提供了一定的理论参考。试验结果表明该钢框架由于节点部位转动刚度小于刚性连接,使结构的抗侧刚度降低,侧向变形增加,但是同时也改善了梁柱的内力分布,提高了其在周期循环荷载作用下的滞回性能和耗能特性,比刚性连接钢框架具有更好的抗震性能。The behavior of beam-to-column connections with angles are between fully rigid connection and ideal pin connection, and belong to semi-rigid connection. Pseudo-static force testing of a steel frame with semi-rigid connections is carried out in order to study the hysteresis properties, ductility and failure mechanism of the steel frame and some theoretic reference for seismic design of steel frame structure are given. Experimental results indicate that lateral stiffness of the steel frame with semi-rigid connection reduce and the lateral displacement of the steel frame increase because of the smaller rotational stiffness of semi-rigid connection compare with the rigid connection and inner force of the steel frame occur great variation. Steel frame with semi-rigid connection has stable hysteresis properties, good energy dissipation properties and better earthquake-resistant capability.

关 键 词：半刚性连接 滞回性能 延性 钢框架 

分 类 号：TU378.4[建筑科学—结构工程] TU375.303