砌体与钢筋混凝土框架混合结构抗震加固试验研究  

Experimental research on seismic strengthening of hybird masonry-reinforced concrete frame structure

作　　者：郑士举 郑乔文 ZHENG Shiju;ZHENG Qiaowen(Shanghai Key Laboratory of Engineering Structure Safety,Shanghai 200032,China;Shanghai Research Institute of Building Sciences,Shanghai 200032,China)

机构地区：[1]上海市工程结构安全重点实验室,上海200032 [2]上海市建筑科学研究院有限公司,上海200032

出　　处：《四川建筑科学研究》2020年第4期25-33,共9页Sichuan Building Science

基　　金：国家重点研发计划(2017YFC0806100);上海市优秀技术带头人计划(18XD1422800)。

摘　　要：对砌体与钢筋混凝土框架混合结构的抗震加固进行了低周反复试验研究,共设计了4个试件,分别为原型试件、双面钢筋网砂浆面层加固砖墙、局部单面混凝土板墙加固砖墙、单面钢筋网砂浆面层加固砖墙加框架中局部增设剪力墙。试验结果表明,局部单面混凝土板墙的加固效果较差,实际工程中宜采用双面板墙进行加固。采用钢筋网砂浆面层加固砖墙及框架内局部增设剪力墙都能大幅提高混合结构的抗侧承载能力,框架内局部增设混凝土剪力墙的加固效果最好,试件的刚度和承载力明显增大,砖墙承担的水平力比例降低。Seismic strengthening of hybrid masonry-reinforced concrete frame structure was researched by low cyclic loading test.4 specimens were designed as prototype,masonry wall strengthened by doubled faced mesh reinforcement mortar layer,masonry wall strengthened by part single faced concrete wall,masonry wall strengthened by single faced mesh reinforcement mortar layer and part frame strengthened by shear wall,respectively.Test results indicate that masonry wall strengthened by part single faced concrete wall shows less strengthening effect,which means it s better to strengthen the masonry wall by doubled faced concrete walls in actual engineering.The lateral resistance of hybrid structure can be sharply improved by either mesh reinforcement mortar layer or partly adding shear walls partly in the frame.Adding shear walls in the frame shows the best effect in the test:the stiffness and the resistance of the specimen both increase significantly,the ratio of horizontal force that masonry wall bears reduces.

关 键 词：砌体 钢筋混凝土框架 混合结构 抗震加固 

分 类 号：TU398[建筑科学—结构工程]