【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。更多还原

【Abstract】 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.更多还原