摘要
为研究混杂纤维改良活性粉末混凝土(hybrid fiber modified reactive powder concrete,简称HFMRPC)不同方式加固带构造柱砌体窗间墙的抗震性能,对4片高宽比为1∶1的带构造柱砌体窗间墙进行了水平低周反复荷载试验,其中,1片未加固墙体作为对照组,其余3片墙体分别采用HFMRPC面层单面加固、双面加固、剪刀撑式加固。对试验墙体的破坏模式、承载能力、延性变形、耗能能力等抗震性能指标进行了研究。研究结果表明:加固试件极限荷载提高了34.14%~78.91%,位移延性系数提高了37%~87%;HFMRPC单面加固和双面加固效果相差不大;对比不同方式下HFMRPC面层加固,剪刀撑式加固相对最优。
In order to study the seismic performance of masonry window walls with constructional columns reinforced by different ways of hybrid fiber modified reactive powder concrete(HFMRPC),horizontal low-cycle repeated load test was carried out on four masonry window walls with structural columns with a height-to-width ratio of 1∶1.One unreinforced wall was used as the control group,and the other three walls were reinforced by HFMRPC single side,double sides and scissor brace type respectively.The seismic performance indexes such as failure mode,bearing capacity,ductility deformation and energy dissipation capacity of the test walls were studied.The results show that the ultimate load of reinforced specimens is increased by 34.14%-78.91%,and the displacement ductility coefficient is increased by 37%-87%.HFMRPC single-side reinforcement and double-side reinforcement effects are not much different.Compared with different methods of HFMRPC surface reinforcement,scissor brace reinforcement method is relatively optimal.
作者
王欣
高倩
吴楠
张凯
张群
祝健
WANG Xin;GAO Qian;WU Nan;ZHANG Kai;ZHANG Qun;ZHU Jian(School of Civil Engineering,Shandong Jianzhu University,Jinan 250101,China;Engineering Research Institute of Appraisal and Strengthening of Shandong Jianzhu University Co.,Ltd.,Jinan 250014,China;Asset Management Office,Shandong Jianzhu University,Jinan 250098,China)
出处
《四川建筑科学研究》
2023年第4期1-9,共9页
Sichuan Building Science
基金
建筑结构加固改造与地下空间工程教育部重点实验室课题
山东建筑大学鉴定加固研究院项目(H19230Z)
山东建固特种专业工程有限公司横向课题(2019-YF002)。
关键词
混杂纤维改良活性粉末混凝土
砌体窗间墙
抗震加固
拟静力试验
抗震性能
hybrid fiber modified reactive powder concrete
masonry window wall
seismic strengthening
quasistatic test
seismic performance
