节点域刚度对装配整体式混凝土框架结构抗震性能的影响  

Influence of Connection's Stiffness on Seismic Performance of Assembled Monolithic Reinforced Concrete Frame Structure

作　　者：耿方方[1,2,3] 李亚东 赵昕 陈建兵 GENG Fang-fang;LI Ya-dong;ZHAO Xin;CHEN Jian-bing(School of Architecture Engineering,Nanjing Institute of Technology,Nanjing 211100,China;College of Civil Engineering,Southeast University,Nanjing 211100,China;Architectural Design&Research Institute,Tongji University,Shanghai 200092,China;College of Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]南京工程学院建筑工程学院,南京211100 [2]同济大学建筑设计研究院,上海200092 [3]同济大学土木工程学院,上海200092 [4]东南大学土木工程学院,南京211100

出　　处：《科学技术与工程》2018年第27期187-192,共6页Science Technology and Engineering

基　　金：国家自然科学基金(51608258)资助

摘　　要：装配整体式混凝土框架结构是目前国内外研究和应用最多的工业化结构体系之一,其梁柱连接节点域的刚度对框架结构整体抗震性能有重要影响。为此,研究了装配整体式混凝土框架结构节点域刚度的数值模拟方法,开展了四种节点域刚度下装配式混凝土框架结构的弹塑性时程分析;在此基础上详细考察了四种节点域刚度下整体结构的振动特性、动力响应、耗能性能和构件性能状态等。分析结果表明:装配整体式混凝土框架结构抗震计算时应考虑节点刚域的影响。不考虑节点刚域将对屈服机制和性能水平等整体弹塑性性能有较大影响,从而为进一步研究装配式混凝土框架结构的整体性能分析提供参考。Assembled monolithic reinforced concrete frame structure is one of the most popular industrial structural systems around the world.The beam-to-column connection is its crucial part,whose stiffness has an important influence on the overall seismic performance of the structure.Therefore,the numerical simulation method for the stiffness of the connection in the precast-monolithic reinforced concrete frame structure is presented,based on which the nonlinear time-history analysis of concrete frame structure under four cases of different node plastic stiffness are carried out.The vibration characteristics,dynamic responses,energy dissipation performance and component performance state of the concrete structure under four cases are investigated in detail.The results show that the rigid zone of connection must be considered in the seismic performance analysis for the precast-monolithic reinforced concrete frame structure.If the rigid zone of connection isn’t considered,the elasto-plastic behaviors such as yield mechanism and the level of performance are influenced greatly for the structure.The results provide a reference for the further research on the overall structural performance of the precast-monolithic reinforced concrete frame structure.

关 键 词：装配整体式框架结构 节点域刚度 弹塑性时程分析 屈服机制 性能水平 

分 类 号：TU375.4[建筑科学—结构工程]