钢筋混凝土异形柱平截面假定适用性初探  

Primary Study of Applicability of Plane-section Assumption of Shaped RC Columns

作　　者：胡晓斌[1] 黄宗明[1] 陈名弟[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045

出　　处：《重庆建筑大学学报》2004年第3期26-31,共6页Journal of Chongqing Jianzhu University

基　　金：国家自然科学基金资助项目(59978055)

摘　　要：采用通用有限元分析软件ANSYS的SOLID65和LINK8单元,对处于压、弯、剪、扭复杂受力状态下肢宽厚比为4∶1的十形柱、L形柱和T形柱进行了单调加载计算机模拟,同时采用基于有限单元柔度法的纤维模型梁柱单元进行对比分析,对平截面假定在异形柱非线性分析中的适用性进行了初步探讨。结果表明,对于肢宽厚比小于或等于4∶1的异形柱,采用平截面假定进行分析基本可行。Adopting the element SOLID65 and LINK8 in the general finite element analysis software ANSYS and fiber model beam-column element based on finite element flexibility method respectively, the comparative analysis of the cross, L and T-shaped RC columns under compression, bending, shear and torsion with flange width-thickness ratio of 4:1 is carried out. The applicability of plane section assumption in the nonlinear analysis is discussed primarily, which shows that it is feasible on the whole for shaped RC columns with flange width-thickness ratio equal to or smaller than 4:1.

关 键 词：钢筋混凝土 异形柱 平截面假定 非线性分析 

分 类 号：TU375.3[建筑科学—结构工程]