钢管混凝土柱-梁节点反复荷载后的轴压试验  

Axial Compression Experiment on the Concrete Filled Steel Tubular Column-beam Joint After the Cyclic Loading

作　　者：杨平 蔡健[2,3] 陈庆军[2,3] 吴轶[4] 

机构地区：[1]广州珠江外资建筑设计院,广州510010 [2]华南理工大学土木与交通学院,广州510641 [3]亚热带建筑科学国家重点试验室,广州510641 [4]广州大学土木工程学院,广州510000

出　　处：《武汉理工大学学报》2010年第7期129-133,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(50878087);广东省自然科学基金(9451064101002910);广州市教育局科技项目(62063)

摘　　要：对经历了低周反复荷载作用后的节点区柱钢管不贯通式新型钢管混凝土柱-梁节点进行了轴压试验,从极限承载力、裂缝形态、试件的荷载-轴向位移曲线等方面进行了研究,并与直接进行轴压试验的试件进行对比分析。结果表明,该新型节点的环梁在反复荷载下虽然产生了一定的损伤,但对节点区的轴压极限承载力的影响并不大,环梁仍能发挥对节点核心区的约束和加强作用,使节点区承载力大于钢管混凝土柱的承载力。The axial compression experiment on the new type of concrete filled steel tubular column-beam joint after the cyclic loading is carried out,in this type of joint,the steel tube in the joint zone is discontinuous.The bearing capacity,crack pattern,load-axial displacement curves of the specimens are researched,and they are compared with the specimen＇s tests only under axial force.The results show that,the cyclic loading cause some damage on the ring beam,but it has few effect on the axial bearing capacity,the ring beam can still confine and strengthen the joint zone,the capacity of the joint zone is higher than concrete filled steel tubular column.

关 键 词：钢管混凝土 柱-梁节点 不贯通钢管 轴压试验 

分 类 号：TU398[建筑科学—结构工程]