高位板式转换层对钢筋混凝土框筒结构抗震性能的影响  

Influence of High Thick-slabs Transfer-story on Seismic Performance of RC Frame-core Wall Structure

作　　者：王慧英[1] 张回[2] 刘田[2] 何方平[2] 

机构地区：[1]广东建设职业技术学院土木工程系,广东广州510440 [2]湘潭大学土木工程与力学学院,湖南湘潭411105

出　　处：《工程抗震与加固改造》2016年第3期1-6,19,共7页Earthquake Resistant Engineering and Retrofitting

基　　金：湖南省自然科学基金项目(12JJ6047);教育部博士点基金项目(20094301120001)

摘　　要：采用振型分解反应谱分析方法,通过参数分析探讨设计地震强度、板式转换层位、转换层板厚和下部结构刚度变化对框筒结构振动周期、层间位移和楼层剪力等结构反应的影响。分析结果表明:楼层剪力和层间位移随设计地震强度增大而增大,地震强度水平越高影响越显著;转换层位提高,结构平动周期减小,而扭转周期增大,结构变形逐渐由上部楼层控制转变为下部楼层控制,转换层邻近楼层框支柱分配的楼层剪力增加;转换板厚度增加对转换层下部结构的抗震不利,扭转效应增大;下部结构核心筒剪力墙厚度增大,结构周期比减小,而框支柱截面增大时结构周期比增大。The response spectrum analysis method of mode decomposition is used to investigate the influence of earthquake intensity,location of thick-slabs transfer-story,transfer-slab thickness and lower-story stiffness on the structural response by parameter analysis,such as structural vibration period,inter-story drift and story shear force. The results demonstrate that inter-story drift and story shear force increases with the increasing in earthquake intensity,which is more significant due to the increasing in earthquake intensity. The translational period decreases and torsion period increases with the rise of transfer-story. The structural dominant drift is increasingly changed to the drift of lower stories from the drift of upper stories,and the share of story shear force increases in frame-supporting columns adjacent transfer-story stories. The overlarge transfer-slab thickness is disadvantageous to the lower stories,which can amplify the torsion effects. The structural period ratio increases with the increasing in thickness of core wall,while the structural period ratio decreases with the increasing in section of frame-supporting columns.

关 键 词：框筒结构 高位厚板转换层 地震反应 层位移 层剪力 周期比 

分 类 号：TU973.17[建筑科学—结构工程] TU973.31