组合结构楼板钢次梁-混凝土主梁节点静力性能研究  

Study on static performance of steel secondary beamconcrete main girder joints of composite structure floor

作　　者：李睿 LI Rui(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]华南理工大学土木与交通学院,广东广州510641

出　　处：《四川建筑科学研究》2024年第3期15-20,共6页Sichuan Building Science

基　　金：山东省重点研发计划项目(911897025)。

摘　　要：进行了2个钢次梁-混凝土主梁节点试件的静载试验,分析了试件的受力过程和破坏机理,得到了试件弹性阶段、屈服阶段、极限阶段和破坏阶段的荷载和位移,并对试件破坏时钢次梁和钢筋关键部位的应力进行了分析。结果表明:试件的最终破坏始于钢次梁下翼缘屈服,节点区域锚固良好,属于次要构件的塑性破坏;插入式节点为半刚性连接节点,预埋式节点为铰接节点。Two static load tests were conducted on the steel secondary beam-concrete main grider joints.The stress processes and failure mechanisms of the two types of joints were analyzed.The corresponding loads and displacements of the specimens at the elastic stage,yield stage,ultimate stage and failure stage were obtained,and the stress in the key parts of the steel secondary beam and steel reinforcement during the specimens failure was analyzed.The results show that the final failure of the two specimens begins with the yielding of the lower flange of the steel secondary beam,and the anchoring of the joint area is good,belonging to the plastic failure of the secondary component.The plug-in joint is a semi rigid connection joint,and the embedded joint is a hinged joint.

关 键 词：钢次梁 混凝土主梁 节点 试验研究 静力性能 

分 类 号：TU398[建筑科学—结构工程]