钢筋混凝土框架-自复位约束砌体墙结构拟静力试验研究  

Pseudo-static tests of the reinforced concrete framed self-centering confined masonry wall structure

作　　者：戴泽旭 毕仲君 胡晓斌[1] DAI Zexu;BI Zhongjun;HU Xiaobin(School of Civil Engineering,Wuhan University,Wuhan 430072,China)

机构地区：[1]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2022年第5期474-483,共10页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:51578429,51208386)。

摘　　要：采用钢连系梁将自复位约束砌体墙与钢筋混凝土框架结合起来,形成一种新型的钢筋混凝土框架-自复位约束砌体墙结构。设计制作了2个缩尺试件,分别为钢筋混凝土框架-自复位约束砌体墙结构试件(记作FSCMW试件)和钢筋混凝土框架-约束砌体墙结构试件(记作FMW试件),采用拟静力试验对它们的抗震性能进行了深入研究。结果表明:从整体上看,FSCMW试件中自复位约束砌体墙损伤很轻,而FMW试件中约束砌体墙破坏较严重;水平位移较大时,FSCMW试件残余位移明显小于FMW试件,说明其具有较好的自复位能力;FSCMW试件水平力主要由框架承担,而FMW试件水平力主要由约束砌体墙承担。By combing the self-centering confined masonry wall with the reinforced concrete(RC) frame using the steel linking beam, a new type of structure, i.e. RC framed self-centering confined masonry wall structure,is developed in this paper. Two scaled specimens were constructed, one representing the aforementioned structure(denoted as specimen FSCMW) and the other one representing the RC framed confined masonry wall structure(denoted as specimen FMW). By way of quasi-static test, the seismic performances of the two specimens were comparatively investigated in depth. The outcome shows that on the whole the self-centering confined masonry wall in specimen FSCMW experiences little damage, while the confined masonry wall in specimen FMW is severely damaged. For the relatively larger lateral displacement, the residual displacement of specimen FSCMW is much smaller than that of specimen FMW, indicating that specimen FSCMW has better self-centering ability. The lateral load of specimen FSCMW is mainly sustained by the frame, while the lateral load of specimen FMW is mainly borne by the confined masonry wall.

关 键 词：钢筋混凝土框架-自复位约束砌体墙结构 钢筋混凝土框架-约束砌体墙结构 抗震性能 拟静力试验 自复位 

分 类 号：TU398[建筑科学—结构工程]