高强冷弯薄壁型钢住宅楼盖梁受力性能研究  

Study of force resistance of floor beams in high-strength cold-formed thin-walled steel housing system

作　　者：曾德伟[1] 郭耀杰[1] 曹珂[1] 吴珊[1] 陈焰周[2] 

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072 [2]中南建筑设计院股份有限公司,湖北武汉430071

出　　处：《武汉大学学报（工学版）》2013年第1期128-132,共5页Engineering Journal of Wuhan University

基　　金：博士自主科研基金(编号:274435)

摘　　要：在试验的基础上,采用有限单元法对高强冷弯薄壁型钢桁架楼盖梁的受力性能进行了研究.考虑材料非线性和几何非线性的影响,采用塑性壳单元建立有限元模型.桁架节点的拉铆钉采用节点耦合模型.将试验和有限元分析结果进行全面比较分析,验证了文中采用的有限单元法的准确性.然后采用此方法建模分析不同高度和跨度的楼盖梁的受力性能,以及桁架节点采用双铆钉连接时对桁架梁受力性能的影响.最终拟合出不同高度和跨度的楼盖梁的承载力估算公式,供工程设计参考.On the base of tests,the finite element method（FEM） has been used to study the force resistance of floor beams in the new thin-walled steel housing system.A group of floor beams have been carried loading test to obtain the ultimate bearing capacity;then finite element model of floor beams,using plastic shell element in ANSYS and simultaneously considering material and geometric nonlinearity,has been established to analyze bearing behavior.Finally,an approximation formula of ultimate loads of floor beams is given for the various specifications of floor beams for practical engineering design.

关 键 词：高强冷弯薄壁型钢 楼盖梁 试验 非线性有限元 承载能力 

分 类 号：TU392.1[建筑科学—结构工程]