开洞砌体填充墙钢筋混凝土框架抗震性能试验研究  

Experimental study on seismic performance of masonry infilled reinforced concrete frames with openings

作　　者：沈萍[1] 唐兴荣[2] 程俊涛[2] Shen Ping;Tang Xing-rong;Cheng Jun-tao(School of Landscape Engineering,Suzhou Polytechnic Institute of Agriculture Suzhou 215008,China;School of Civil Engineering,Suzhou University of Science and Technology,Suzhou 215011,China)

机构地区：[1]苏州农业职业技术学院园林工程学院,江苏苏州215008 [2]苏州科技大学土木工程学院,江苏苏州215011

出　　处：《工程抗震与加固改造》2021年第4期8-18,共11页Earthquake Resistant Engineering and Retrofitting

基　　金：江苏省企业院士工作站科研项目(YG-2011-06-06)。

摘　　要：为了研究砌体填充墙开洞率对钢筋混凝土框架抗震性能的影响,考虑了整体砌体填充墙和开洞砌体填充墙两种类型。进行了5榀缩尺比例为1/2单层单跨砌体填充墙框架结构模型在低周反复荷载作用下的对比试验,设计参数为填充墙开洞率及开洞位置。分析比较了各试件的破坏特征、滞回曲线、骨架曲线、位移延性、刚度退化、强度退化和耗能性能等抗震性能指标。试验结果表明:整体或局部砌体填充墙不同程度地提高了框架结构的初始刚度和极限承载能力,其提高程度与砌体填充墙的开洞率大小及其洞口的位置等有关。部分砌体填充墙高宽比越大,填充墙对框架结构的支撑作用减弱,其对结构的刚度和承载力的贡献随之降低。部分砌体填充墙能够提高框架结构的极限承载力和延性性能,实际工程中可采取设置部分砌体填充墙的措施来改善既有框架结构的抗震性能。In order to study the influence of the opening rate of masonry filled wall on the seismic performance of reinforced concrete frames that are designed in accordance with current code provisions. Two types of masonry infill walls are considered including overall masonry infill wall and masonry infill wall with opening. Five 1/2-scale,single-story,single-bay reinforced concrete frame specimens infilled with masonry walls are tested under low cyclic reversed load. The parameters investigated are the opening ratio of masonry filled wall and its position. The assessment of the frames is presented in terms of the damage characteristics,load-displacement hysteresis loops,skeleton curves,bearing capacity,displacement ductility,rigidity degradation,strength degradation and energy dissipation. The test results indicate that the whole or partial masonry filled wall enhances the initial lateral stiffness and ultimate bearing capacity of frame structures,the degree of improvement is related to the opening rate of masonry filled wall and the location of its opening.With the height to width ration of partial masonry infill wall increases,the supporting role of masonry infill wall to the frame weakens,and its contribution to stiffness and bearing capacity of frame structure decrease. In practical engineering,the partial masonry filler walls can be used to improve the seismic performance of existing frame structure.

关 键 词：开洞填充墙 混凝土空心砌块 钢筋混凝土框架 拟静力试验 抗震性能 

分 类 号：TU398[建筑科学—结构工程] TU317