半刚性连接梁柱组合节点低周反复荷载试验研究  

Cyclic loading tests on composite beam-to-column joints with semi-rigid connections

作　　者：石文龙[1,2] 李国强[3] 肖勇 叶志明[1] 

机构地区：[1]上海大学土木工程系,上海200072 [2]沈阳建筑大学结构工程省级重点实验室,辽宁沈阳110168 [3]同济大学建筑工程系,上海200092 [4]威尔士斯旺西大学土木工程系,英国斯旺西SAZ8PP

出　　处：《建筑结构学报》2008年第5期57-66,共10页Journal of Building Structures

基　　金：中国博士后科学基金(20070410174);沈阳建筑大学结构工程省级重点实验室开放基金(JG200712)

摘　　要：为研究半刚性连接梁柱组合节点的抗震性能,开展了1个纯钢框架梁柱中节点、2个组合框架梁柱中节点的低周反复荷载试验。梁柱采用平齐式高强螺栓端板连接,试验采用柱顶加载模式。对试件的试验现象、变形、应变和耗能能力等进行了分析和比较。试验结果表明,组合节点相对于纯钢节点而言,由于负弯矩作用下钢筋的抗拉作用和正弯矩作用下混凝土板的抗压作用,其受弯承载力和转动刚度均有较大程度地提高;连接弯矩-转角关系的滞回曲线饱满、稳定,具有良好的耗能能力;平端板连接梁柱组合节点在反复荷载作用下具有较高的承载力和良好的延性,抗震性能良好。To study the seismic performance of semi-rigid composite beam-to-column joints, one bare steel cruciform joint and two composite cruciform joint specimens with flush end-plate connections were tested under cyclic loading applied at the top of the column. The experimental phenomenon, displacement, strain and energy dissipation of the specimen were analyzed and compared with each other. The experimental results indicate that compared with bare steel joints, composite joints have higher moment resistance capacity and rotational stiffness because of the tension action of rebar under negative moment and the compression action of concrete slab under positive moment. The hysteretic loops of the connection moment-rotation curves are stable and plumy, demonstrating that the composite joints with flush end plate connection have good moment resistance and rotational capacity under cyclic loading.

关 键 词：平端板连接 组合节点 低周反复荷载 试验研究 节点性能 

分 类 号：TU392.11[建筑科学—结构工程] TU317.1