摘要
基于劲性环梁式钢管混凝土柱-钢筋混凝土梁节点的低周往复荷载试验及ABAQUS有限元数值模拟结果,分析了节点试件的滞回特性,通过对有限元计算结果进行回归分析,考虑刚度退化的影响,提出了劲性环梁式钢管混凝土节点的三折线恢复力模型,该恢复力模型包括骨架曲线模型和具有刚度退化规律的滞回规则。最后将所提出的恢复力模型和试验所得曲线进行比较,结果符合较好。建立的恢复力模型可用于劲性环梁式钢管混凝土框架节点的弹塑性分析。
According to the results of low cyclic loading tests and ABAQUS finite element analysis, the hysteretic characteristics of steel reinforced ring-beam connections of concrete filled steel column and RC beam are analyzed. A trilinear hysteretic restoring force model considering rigidity degradation is proposed by regression analysis of the finite element calculation results, which includes a skeleton curve model and a hysteresis rule with rigidity degradation law. The compared results show that the proposed restoring force model agrees with the test curves well. The model can be used to elastic-plastic analysis of steel reinforced ring-beam connections of concrete filled steel column frame.
出处
《混凝土与水泥制品》
2016年第8期58-62,共5页
China Concrete and Cement Products
基金
国家青年自然科学基金资助项目(51408621)
河南省科学技术厅科技攻关研究计划资助项目(152102310119)
河南省高等学校重点科研项目基础研究项目(15A560046)
关键词
钢管混凝土
节点
劲性环梁
恢复力模型
回归分析
Concrete filled steel tube
Joint
Steel reinforced ring-beam
Restoring force model
Regression analysis
