组合连梁与墙肢节点恢复力模型试验研究  

Experimental study on restoring force models of composite coupling beam and pier joints

作　　者：阎奇武[1] 唐莹莹 陈康华[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075 [2]长沙市代建工程建设指挥部,湖南长沙410008

出　　处：《中南大学学报（自然科学版）》2009年第2期504-511,共8页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(50578161,50478092);湖南省建设厅科技计划项目(2005-09)

摘　　要：为了建立平面内钢-混凝土组合梁与混凝土墙肢节点的恢复力模型,进行2个足尺平面内钢-混凝土组合连梁与混凝土墙肢节点的低周反复荷载试验,研究节点的破坏机理,得到节点的低周反复荷载作用下的滞回曲线。利用统计分析软件SPSS,采用对平面内钢-混凝土组合梁与混凝土墙肢节点滞回曲线的回归分析,考虑强度和刚度退化规律,建立平面内钢-混凝土组合梁与混凝土墙肢节点的恢复力模型。实验结果表明:平面内钢-混凝土组合梁与混凝土墙肢节点的低周反复荷载试验滞回曲线呈弓形,骨架曲线呈倒"Z"形,平面内钢-混凝土组合梁与混凝土墙肢节点有较好的延性和较强的耗能能力。In order to found restoring force models of steel-concrete composite coupling beam and concrete pier （SCBCP） joints in plane, the experiments on 2 full-scale specimens of SCBCP joints were conducted under low reversed cyclic loading. By means of the experiments, failure patterns were researched, and hysteretic loops of the joints at the end of beams under low-reversed cyclic loading were acquired. According to the regressive analysis of hysteretic loops of SCBCP joints in plane through SPSS software of statistical analyzing, restoring force models of SCBCP joints in plane were established considering the strength and the stiffness degenerated rules. The experimental results show that hysteretic loops of SCBCP joints are in a bow pattern, and the outer diaphragms of the hysteretic loops of the joints are in a opposite ＂Z＂ pattern. As a result, energy dissipation and ductility of SCBCP joints at the end of beams under low reversed cyclic loading are better.

关 键 词：组合连梁 剪力墙 恢复力模型 

分 类 号：TU398.2[建筑科学—结构工程]