加强环式钢管混凝土节点梁柱连接刚度的有限元分析  

Finite element analysis of stiffness of connection between steel beam and CFT column with stiffener ring plate

作　　者：陈曦[1] 王湛[1] 

机构地区：[1]汕头大学,广东汕头515063

出　　处：《四川建筑科学研究》2007年第5期9-11,共3页Sichuan Building Science

基　　金：国家自然科学基金资助项目(50378053)

摘　　要：加强环式钢管混凝土节点在工程中通常被当作刚性节点。但实际上,完全的刚性连接是不存在的,该节点的梁柱连接刚度介于刚接与铰接之间。为了获得完整准确的节点连接刚度信息,主要运用有限元工具并加以试验验证,探求影响梁柱连接刚度的各要素以及这些要素对连接刚度的影响程度。首先,利用有限元分析软件ANSYS建立加强环式钢管混凝土节点的有限元模型,并以试验验证了模型的准确性;然后,在经过试验校核的有限元节点模型基础上,作一系列改变节点域各个参数的分析,从而确定影响梁柱连接刚度的重要因素;最后,利用MATLAB将有限元数据拟合成描述该节点梁柱连接刚度通用的M—θ公式。The joint of concrete-filled tube （CFT） column with stiffener ring plate is normally regarded as a rigid joint. But in fact there is not any fuU-rigid connection between beam and column. The stiffness of the connection is between a rigid one and a pinned one. In order to obtain the full and accurate information of the connection＇s stiffness, this paper mainly use finite-element method with verification of tests to search all factors influencing the connection＇s stiffness and to study the degree of the influence of the factors. First,the finite element model of the joint was set up in ANSYS, the finite element analysis software. And the accuracy of the model was verified by the results of the tests. Next, based on the verified model, a series of analysis changing every parameters of joint region were done and thereby the key factors influencing the connection＇s stiffness were decided. Finally by MATLAB, the finite-element data were fitted into the general M--θ formula describing the stiffness of the bemn-to-column connection.

关 键 词：钢管混凝土 加强环式 梁柱节点 连接刚度 ANSYS 

分 类 号：TU398[建筑科学—结构工程]