弱轴顶底角钢连接滞回性能的非线性有限元分析  

Non-linear finite element analysis for hysteretic behavior of the top-and-seat angle minor axis connection

作　　者：孙利骄[1,2] 王湛[1,2] 

机构地区：[1]华南理工大学土木与交通学院,广东广州510641 [2]华南理工大学亚热带建筑科学国家重点实验室,广东广州510641

出　　处：《四川建筑科学研究》2012年第4期6-9,共4页Sichuan Building Science

基　　金：国家自然科学基金资助项目(50978104);亚热带建筑科学国家重点实验室基金资助项目(2010ZC14)

摘　　要：在钢框架结构中,弱轴连接与强轴连接同样普遍[1],目前对钢框架强轴连接的研究较多,但弱轴连接的研究资料却十分匮乏。因此,本文作者采用有限元方法,先对弱轴顶底角钢连接在单向加载下的性能进行非线性分析,并与文献[1]中试验结果对比。再设计6个试件,采用多线性随动强化材料模型,研究该节点在往复荷载作用下的滞回性能。着重分析角钢厚度、柱腹板厚度对其滞回性能的影响。研究结果表明,弱轴顶底角钢节点属于典型的半刚性连接,连接刚度较小,节点延性较好,有一定的耗能能力。Beam-to-column minor-aixs connections are as universal as strong-aixs connections in steel frame structure system. So far, there has been many research data about strong-aixs connections in steel frame structure which are few about minor-aixs connections. Therefore, using finite element methods, this paper analyses the performance under monotonic loading of the top-and-seat angle minor axis connection ,which are compared to the test result in reference [ 1 ] firstly. Then six specimens considering the multi-linear kinematic hardening of material are designed, which are used to study hysteretic behavior under cyclic loading of this connection. How the thickness of the angle iron and column-web influences hysteretic behavior is mainly studied in this paper. The study shows,the top-and- seat angle minor axis connection is a typical semi-rigid connection with low connection stiffness, and the connection performs well in ductility and energy dissipation.

关 键 词：弱轴 顶底角钢 有限元 滞回曲线 循环加载 耗能 

分 类 号：TU391[建筑科学—结构工程]