HFMRPC面层加固带窗洞口砌体墙抗震性能试验研究  

Experimental Study on Seismic Performance of Masonry Walls with Window Openings Strengthened with Hybrid Fibers Modified Reactive Powder Concrete Coating

作　　者：刘国安 王欣[1,2] 杨哲 王磊玉 周蕴文 陈国斌 LIU Guoan;WANG Xin;YANG Zhe;WANG Leiyu;ZHONG Yunwen;CHEN Guobin(School of Civil Engineering,Shandong Jianzhu University,Jinan 250101,China;Key Laboratory of Building Structural Retrofitting and Underground Space Engineering Ministry of Education,Shandong Jianzhu University,Jinan 250101,China;Engineering Research Institute of Appraisal and Strengthening,Shandong Jianzhu University,Jinan 250014,China)

机构地区：[1]山东建筑大学土木工程学院,山东济南250101 [2]山东建筑大学建筑结构加固改造与地下空间工程教育部重点实验室,山东济南250101 [3]山东建筑大学工程鉴定加固研究院,山东济南250114

出　　处：《防灾减灾工程学报》2023年第4期752-762,777,共12页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家自然科学基金项目(51878395)资助。

摘　　要：为了研究混杂纤维改良活性粉末混凝土(HFMRPC)不同方式加固构造柱约束带窗洞口砌体墙的抗震性能,对1面作为对照组的未加固带窗洞口的砌体墙和3面分别通过单面加固、双面加固和双面窗间墙加固的砌体墙进行低周往复荷载试验。分析对比了构造柱约束带窗洞口砌体墙的破坏模式、承载能力和位移延性等抗震性能。试验结果表明:HFMRPC面层与砌体墙有良好的粘结能力,通过面层加固后能提升墙体的整体性并且形成有效约束;HFMRPC面层加固后显著提升了砌体墙的承载能力、能量耗散,延缓了墙体的开裂和刚度退化;通过试验结果和理论分析提出了构造柱约束的带窗洞口砌体墙的抗剪承载力计算公式。In order to investigate the seismic performance of confined masonry walls with window openings strengthened by hybrid fibers modified reactive powder concrete(HFMRPC)in different ways,low-cycle repeated loading tests were conducted on a unreinforced masonry wall served as a control group and 3 masonry walls strengthened by single-sided full coverage reinforcement,double-sided full coverage reinforcement,and double-sided coverage in piers reinforcement,respectively.The seismic performance of the confined masonry walls with window openings was analyzed and compared in failure mode,bearing capacity,and displacement ductility.The test results show that the HFMRPC coating has good bonding ability on the masonry wall,the integrity of masonry walls can be improved with coating application,which can form an effective restraint;after being strengthened by HFMRPC coating,the bearing capacity and energy dissipation of masonry walls were significantly enhanced,and the development of cracking and stiffness degradation was delayed;the formula for the shear bearing capacity of strengthened confined masonry walls with window openings was proposed based on theoretical analysis and test results.

关 键 词：构造柱约束带窗洞口砌体墙 混杂纤维改良活性粉末混凝土 抗震加固 拟静力试验 抗震性能 

分 类 号：TU443[建筑科学—岩土工程]