全轻混凝土框架结构梁柱节点试验及破坏形态分析  

Test and failure mode analysis of all-lightweight concrete frame structure beam's joints

作　　者：杨艳敏[1] 聂亚男 黄志明 甄严[1] 董文龙[1] Yang Yanmin Nie Yanan Huang Zhiming Zhen Yan Dong Wenlong(School of Civil Engineering, Jilin Jianzhu University, Changchun 130118, China Xinsheng Construction Engineering Company of Jilin Province, Changchun 130052, China)

机构地区：[1]吉林建筑大学土木工程学院,吉林长春130118 [2]吉林省新生建筑工程公司,吉林长春130052

出　　处：《建筑科学》2017年第7期52-56,共5页Building Science

基　　金：国家自然科学基金(51378238);吉林省科技厅计划项目(20150203014SF);吉林省教育厅计划项目(2015267)

摘　　要：应用拟静力试验研究方法,对全轻混凝土框架结构的梁柱节点试件以梁外端低周往复加载方式进行了极限承载力试验,研究轴压比为0.1和轴压比为0.3时全轻混凝土梁柱边节点和中间节点的破坏机制,分析不同轴压比和相同轴压比下梁柱节点的破坏性能。试验结果表明,边节点的抗震性能优于中间节点,相同的节点其承载力随轴压比增大而减小。节点核心区发生剪切破坏,梁端在弯剪共同作用下发生弯剪破坏。By applying pseudo-static method,the ultimate bearing capacity test for specimen of beam column joints of all-lightweight concrete frame structure is carried out by low cyclic reciprocating loading on external beam end.The failure mechanism of all-lightweight concrete beam＇s exterior joints and middle joints is studied when axial compression ratio is 0. 1 and 0. 3,and the failure properties of beam joints in case of same and different axial compression ratio are analyzed. The results show that the exterior joints＇ seismic performance is better than middle ones. For the same joints,the bearing capacity decreases as axial compression ratio increases. Shear failure happens in core area of joints,and bend and shear failure happens to beam end under bend and shear stress.

关 键 词：全轻混凝土 框架节点 往复加载试验 破坏形态 

分 类 号：TU312.1[建筑科学—结构工程]