钢框架抗震耗能节点梁的极限承载力分析  

THE BEAM ULTIMATE LOAD FOR STEEL STRUCTURES WITH ANTI-SEISMIC AND ENERGY-DISSIPATED CONNECTIONS

作　　者：韩明岚[1] 高倩[1] 王燕[2] 陈建林[1] HAN Minglan;GAO Qian;WANG Yan;CHEN Jianlin(School of Sciences, Qingdao University of Technology, Qingdao 266033, Shandong, China;Department of Civil Engineering, Qingdao University of Technology, Qingdao 266033, Shandong, China)

机构地区：[1]青岛理工大学理学院,山东青岛266033 [2]青岛理工大学土木工程学院,山东青岛266033

出　　处：《力学与实践》2016年第6期645-650,共6页Mechanics in Engineering

基　　金：山东省自然科学基金(ZR2012EEL26);青岛市建设科技计划(JK2014-08);青岛理工大学名校工程建设教学改革子项目(MX4-009)资助

摘　　要：为提高结构的抗震性能,框架结构中以翼缘削弱型节点为代表的延性耗能节点逐渐代替传统节点,为研究翼缘削弱型节点框架梁在单向比例加载时的极限载荷,对削弱梁极限状态进行了分析,判定极限状态下削弱梁塑性铰生成的位置并计算极限载荷,将计算结果和普通梁进行对比.分析结果表明:削弱梁越长承载力下降越明显,对短梁需要选择合适的削弱参数,才能避免塑性铰出现在梁端.研究结果可为削弱梁塑性设计提供依据,同时拓展结构力学极限载荷学习内容.To improve the structural seismic property, ductile and energy-dissipated connections represented by the reduced beam section connections gradually replace the ordinary connections. Therefore, in this paper,the beam's ultimate load under unidirectional and proportional loading is analyzed to judge the location of the plastic hinge, and the results are compared with those of the ordinary beam. It is shown that the ultimate load decreases more signiˉcantly when the beam is longer. A suitable reduced parameter should be chosen when the beam is short, to avoid the plastic hinge being formed at the end of the beam.The results can serve as the plastic design basis for the reduced beam and expand ultimate load content in structural mechanics.

关 键 词：翼缘削弱型节点 极限载荷 塑性设计 塑性铰 

分 类 号：TU311[建筑科学—结构工程] O342[理学—固体力学]