芯柱式构造柱约束的低层砌体结构抗震性能  

Seismic Behavior of Low Masonry Structure with Core-Tie-Columns

作　　者：郑妮娜[1] 李英民[1] 潘毅[2] 

机构地区：[1]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045 [2]西南交通大学土木工程学院,四川成都610031

出　　处：《西南交通大学学报》2011年第1期24-29,55,共7页Journal of Southwest Jiaotong University

基　　金：国家自然科学基金资助项目(50908242);国家科技支撑计划资助项目(2009BAJ28B01-2);重庆市城乡建设委员会科技项目(城科字2009第(3)号);重庆市科技攻关项目资助(CSTC;2010AB0007)

摘　　要：为探讨芯柱式构造柱的抗震性能,对建筑平面、立面布置相同的3种二层砌体(无约束砌体、芯柱式构造柱约束砌体和普通现浇构造柱约束砌体)结构在7,8度罕遇地震下的非线性时程响应进行了分析,对比分析了它们的周期、振型、加速度反应、变形以及墙体塑性应变.分析表明,芯柱式构造柱和普通现浇构造柱约束砌体结构比无约束砌体结构的周期略有减小,振型基本相同;8度罕遇地震下加速度反应明显增大,层间位移反应和墙体塑性应变显著减小;芯柱式构造柱对低层砌体结构位移反应和塑性应变的降低作用与普通现浇构造柱相当,可增强低层砌体结构的抗震性能.In order to research the seismic behavior of core-tie-column,non-linear dynamic time-history responses of three types of two-story masonry structures with the same architectural layouts were analyzed.They are a masonry structure without restriction and two masonry structures with four core-tie-columns（CTC） or four cast-in-place tie-columns（CPTC）.Their periods,vibration modes,acceleration responses,deformations and plastic strains in walls were contrasted and analyzed.The research results show that the period of a masonry structure with CTC or CPTC is shorter than that of a masonry structure without restriction,and the vibration modes of all these masonry structures are almost identical.Under a seismic intensity of 8 degrees,the maximum acceleration responses of the masonry structure with CTC or CPTC are much greater than that of the structure without restriction,and compared with the structure without restriction,the masonry structure with CTC or CPTC has significantly small story-drifts and plastic strains in the walls.The seismic behavior of the masonry structure with CTC is improved and close to that of the masonry structure with CPTC.

关 键 词：砌体结构 芯柱式构造柱 抗震性能 非线性时程响应分析 

分 类 号：TU365.3[建筑科学—结构工程]