外包钢—混凝土组合梁与钢筋混凝土柱连接节点试验研究  

Experimental investigation on joints connecting steel-encased concrete composite beam and reinforced concrete column

作　　者：王英 轩元 丁芳[3] 石启印[3] 

机构地区：[1]镇江市交通工程建设管理处,江苏镇江212005 [2]镇江市建设局,江苏镇江212013 [3]江苏大学理学院,江苏镇江212013

出　　处：《四川建筑科学研究》2011年第2期102-106,124,共6页Sichuan Building Science

基　　金：江苏省博士后基金资助项目(0701008B)

摘　　要：外包钢—混凝土组合梁是一种新型组合梁,在负弯矩作用下具有良好的工作性能,其与柱连接节点的构造还有待合理设计并试验验证。设计了2个外包钢—混凝土组合梁与钢筋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、延性和钢筋、钢板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,外包钢一混凝土组合梁与钢筋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,计算结果和试验结果吻合良好。Steel-encased concrete composite beam is a new type of composite beam;its rational design and experimental verification are needed for the construction of the joints connecting the beam with the columns.Two joints connecting the steel-encased concrete composite beam with reinforced concrete column are designed and investigated by using low-cycle repeated load tests.The performance of the joints such as the failure modes,hysteretic curves,strength,ductility,and strains of steel bars and plates are analyzed.The result of the experiment indicates that significant shear-resistant capacity and satisfactory energy dissipation ability can be obtained by 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 calculated results agree well with the test.

关 键 词：外包钢—混凝土组合梁 钢筋混凝土柱 节点 受剪承载力 延性 耗能能力 

分 类 号：TU398[建筑科学—结构工程]