采用外套管式单边螺栓端板连接节点钢管混凝土框架滞回性能研究  

Hysteretic behavior of concrete filled steel tubular frame with outer-shell end-plate connections

作　　者：刘坚[1] 高奎[1] 周观根 毛捷[1] 于志伟[1] 

机构地区：[1]广州大学土木工程学院,广东广州510006 [2]浙江东南网架股份有限公司,浙江杭州311209

出　　处：《建筑科学》2017年第1期88-95,共8页Building Science

基　　金：广东省教育厅科技创新项目(2012-KJCX-0084);住宅和城乡建设部科技计划项目(2012-k2-8);浙江东南网架股份有限公司横向项目(SM-0716-01);广州市科技计划项目(201607010107);广州大学科技创新培育基金(2016GZDXPT01)

摘　　要：在考虑材料非线性、几何非线性、材料初始缺陷和残余应力的基础上,以轴压比和柱截面含钢率为主要设计参数,建立了外套管式单边螺栓端板连接节点钢管混凝土框架非线性计算模型,并对其进行往复荷载加载,分析外套管式单边螺栓端板连接钢管混凝土平面框架模型的破坏特征、滞回曲线与抗震性能,最后对影响框架的P-△关系曲线的各主要因素进行参数分析。研究表明,采用外套管式单边螺栓端板连接节点的钢管混凝土框架滞回曲线饱满,抗震性能优越,对影响框架的P-△关系曲线各主要因素进行参数分析的具体结果符合实际,可为此种节点连接的钢管混凝土框架的有关研究或工程应用提供参考。Considering both geometrical and material nonlinearities,initial geometric imperfections of steels and concrete damaged plasticity model,taking the axial load level and steel ratio as main design parameters of the finite element models,finite element models of concrete filled steel tubular frame with outer-shell end-plated connections are established. The finite element models are tested under low-cycle loading,and the damage characteristics,hysteretic curves and seismic performance of concrete filled steel tubular frame are analyzed. Parametric study of the factors influencing P-△curves of CFST frames is carried out. The results show that the hysteresis curves of the frame are stable,and the frames have excellent seismic performance,and the results of parametric study are realistic,so that it can provide a reference for study and practical application of CFST frames.

关 键 词：钢管混凝土框架 外套管 有限元 滞回性能 

分 类 号：TU378.4[建筑科学—结构工程]