OpenSEES中混凝土框架结构节点模型关键问题的研究与验证  

RESEARCH AND VERIFICATION ON JOINT MODEL OF RC FRAME STRUCTURE IN OPENSEES

作　　者：解琳琳[1] 叶献国[1,2] 种迅[1,2] 蒋庆[1] 

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009 [2]安徽土木工程结构与材料省级试验室,安徽合肥230009

出　　处：《工程力学》2014年第3期116-121,151,共7页Engineering Mechanics

基　　金：国家土木工程防灾与减灾重点实验室开放课题基金项目(SLDRCE08-HZ-01);安徽省自然科学基金项目(070415220);国家自然科学基金项目(50908071;51278519)

摘　　要：为了研究钢筋混凝土框架节点的数值模拟方法,该文采用有限元软件OpenSEES中的梁柱节点单元对节点进行数值模拟分析。主要研究如何模拟节点核心区混凝土非线性抗剪性能和核心区梁柱纵筋锚固滑移性能两个因素对节点反应的影响,并应用该模型模拟低周反复荷载下的1个边节点和5个中节点的试验模型。结果对比显示该模型能够比较准确的模拟钢筋混凝土节点的非线性反应。In order to study the numerical simulation method of the joints of reinforced concrete frame, numerical simulation is performed by using the Beam Column Joint element in the finite element software OpenSEES in this paper. Two principal factors have been investigated, including the inelastic shear behavior of concrete and the anchoring and slipping behavior of longitudinal reinforcement in the core area of joint. This element in OpenSEES is used to simulate a reinforced concrete side joint and five middle joints under low cyclic loading. The comparison of simulated result and experimental result indicates that the proposed model can be used efficiently in simulating the nonlinear response of joints.

关 键 词：梁柱节点单元 低周反复荷载 滞回环 剪切板 钢筋滑移 纤维模型 

分 类 号：TU375[建筑科学—结构工程]