柔性连接填充墙RC框架结构抗震性能试验研究  

Experimental study on seismic performance of masonry-infilled RC frame building with flexible connection

作　　者：张永兵[1,2,3] 郭新华 李勇 杨涛[1,2,3] ZHANG Yongbing;GUO Xinhua;LI Yong;YANG Tao(School of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China;Key Laboratory of Engineering Disaster Prevention and Structural Safety of Ministry of Education,Guangxi University,Nanning 530004,China;Guangxi Key Laboratory of Disaster Prevention and Engineering Safety,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]广西大学工程防灾与结构安全教育部重点实验室,广西南宁530004 [3]广西大学广西防灾减灾与工程安全重点实验室,广西南宁530004

出　　处：《建筑结构学报》2022年第6期187-195,共9页Journal of Building Structures

基　　金：国家自然科学基金项目(51868004,51568005);广西自然科学基金项目(2013GXNSFBA019236)。

摘　　要：为研究橡胶作为柔性连接材料对填充墙钢筋混凝土(RC)框架结构抗震性能的影响,以填充墙与框架之间的连接方式、砌块类型、柔性连接材料以及砂浆强度为变量,开展了7榀1/2缩尺填充墙RC框架的低周反复加载试验,对比分析各框架的破坏特征、滞回曲线、骨架曲线、位移延性、刚度退化和耗能能力等抗震性能指标。结果表明:橡胶作为柔性连接材料,通过自身变形耗能能够增大填充墙的变形空间,减弱填充墙与框架之间的相互作用,有效保护墙体和框架,并使结构的耗能能力得到较大改善;柔性连接填充墙RC框架的承载力介于纯框架和刚性连接填充墙RC框架的承载力之间,但刚度退化、位移延性以及耗能能力等抗震性能指标均优于刚性连接填充墙RC框架的;对于柔性连接填充墙RC框架,橡胶的种类对RC框架的抗震性能有一定的影响,但影响不大。In order to investigate the influence of rubber as a flexible connection material on seismic performance of reinforced concrete(RC) frame building, the connection mode between the filled wall and the frame, the type of blocks, flexible connection material, and mortar strength were taken as variables and seven 1/2 scale, one-story, one-bay RC frame specimens were tested under the low-cycle reversed loads. The damage characteristics, hysteretic characteristics, skeleton curves, displacement ductility, stiffness degradation, and energy dissipation capacity of seven specimens were compared and analyzed. The results show that rubber can absorb seismic energy through its deformation, increase the deformation displacements of the filled wall, weaken the interaction between the filled wall and the frame, effectively protect the wall and the frame, and greatly improve the energy dissipation capacity of specimens. The load resistance of flexible connection specimens is between that of the bare frame and rigid connection specimens, but the stiffness degradation, displacement ductility, and energy dissipation capacity of flexible connection specimens are better than those of rigid connection specimens. For flexible connection specimens, the type of rubber has a relatively small impact on the seismic performance of the RC frame buildings.

关 键 词：填充墙RC框架 柔性连接 橡胶 低周反复加载试验 抗震性能 

分 类 号：TU375.4[建筑科学—结构工程] TU317.1