外包钢-混凝土组合梁与钢管混凝土柱连接节点试验研究  

EXPERIMENTAL INVESTIGATION ON JOINTS CONNECTING OUTER-PLATED STEEL-CONCRETE COMPOSITE BEAM AND CONCRETE FILLED STEEL TUBE COLUMN

作　　者：石启印[1] 丁芳[1] 轩元 李爱群[3] 

机构地区：[1]江苏大学土木工程系,江苏镇江212013 [2]镇江市建设局,江苏镇江212005 [3]东南大学混凝土与预应力混凝土教育部重点试验室,江苏南京210096

出　　处：《工程力学》2011年第4期109-115,共7页Engineering Mechanics

基　　金：江苏省博士后基金项目(0701008B);江苏省六大人才高峰项目

摘　　要：在外包钢-混凝土组合梁研究基础上,介绍了2个外包钢-混凝土组合梁与钢管混凝土柱的连接节点,并对其进行了低周反复荷载作用下的试验研究。对节点的破坏形态、滞回曲线、强度、延性及钢管等的应变等性能进行了分析。试验结果表明:通过合理的构造措施,外包钢-混凝土组合梁与钢管混凝土柱的连接节点具有较强的受剪承载力、较好的延性和耗能能力,能够满足工程要求。在此基础上对节点的受力机理进行了探讨,提出了节点核心区受剪承载力的计算公式,并对试验主要结果进行有限元模拟。Based on the research of a outer-plated steel-concrete composite beam,the low-cycle repeated load tests are conducted for two joints connecting a outer-plated steel-concrete composite beam and a concrete filled steel tube column,and the performance of the joints such as the failure modes,hysteretic curves,strength,ductility,and strains of the steel bars,the steel plates and the steel tube are analyzed.The result of the experiment indicates that significant shear-resistant capacity and satisfactory energy dissipation ability can be obtained by an appropriate constructional measure so as to satisfy the engineering requirement.Based on the analysis of test,the force mechanism of joint is investigated and the formula for calculating the shear capacity of the joint is presented,the finite element analysis about the two joints are conducted based on the finite element analysis software-ANSYS.

关 键 词：外包钢-混凝土组合梁 钢管混凝土柱 节点 受剪承载力 延性 耗能能力 

分 类 号：TU398.9[建筑科学—结构工程]