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BFRP加固低强度空斗墙抗震性能试验研究*
陈伟1,王婷1,曾鹏1,吴方伯2,周绪红3
摘 要

(1 长沙理工大学土木工程学院, 长沙 410082; 2 湖南大学土木工程学院, 长沙 410153; 3 重庆大学土木工程学院, 重庆 730000)

[摘要]针对空斗墙加固中造价高、工期长、施工工序复杂等问题,提出了应用BFRP加固技术,BFRP加固空斗墙具有施工简单、造价低、抗震效果好等特点。通过6片低强度空斗墙水平低周反复荷载试验,包括2种不同的砌筑方式(全空斗、三斗一眠)和3种不同的BFRP加固方式,分析了加固前后各试件的破坏形态、抗剪承载力、滞回曲线、骨架曲线、延性和墙体的刚度及刚度退化曲线。试验结果表明:三斗一眠的空斗墙的抗震性能优于全空斗墙,低强度空斗墙经过BFRP加固后承载力在一定程度上得到了增强,延性系数变大,变形增加,刚度退化速度变慢,抗震性能得到提升,其中以X形双面剪刀撑加固方式效果最好。

[关键词]空斗墙; BFRP; 全空斗; 三斗一眠; 抗震性能

中图分类号:TU362文献标识码:A文章编号:1002-848X(2017)24-0055-05

 

Experimental study on seismic behavior of BFRP reinforced low strength rowlock wall

Chen Wei1, Wang Ting1, Zeng Peng1, Wu Fangbo2 , Zhou Xuhong3

(1 College of Civil Engineering,Changsha University of Science and Technology, Changsha 410082, China; 2 College of Civil Engineering,Hunan University, Changsha 410153, China; 3 College of Civil Engineering,Chongqing University, Chongqing 730000,China)

Abstract:Aiming at the problems of high cost, long construction period and complex construction procedure in the reinforcement of the rowlock wall, it puts forward to adopt BFRP reinforcement technology. Reinforcement of rowlock wall with BFRP has the characteristics of simple construction, low cost and good seismic effect. The horizontal low cyclic loading tests were conducted on 6 pieces of low strength rowlock wall, including 2 kinds of masonry measures (full rowlock and partly rowlock) and 3 different BFRP reinforcement measures. The failure modes, shear capacity, hysteretic curves, skeleton curves, ductility and wall stiffness and stiffness degradation curve of each specimen were analyzed for conditions before and after the reinforcement. The test results show that: partly rowlock wall has better seismic performance than the full rowlock wall. Bearing capacity of low strength rowlock wall is enhanced to a certain extent after BFRP reinforcement, and the ductility coefficient increases and deformation increases, stiffness degradation slows down, and the seismic performance is improved. X-typed double-sided scissor-bracing reinforcement effect is the best.

Keywords:rowlock wall; basalt fibres reinforced polymer(BFRP); full rowlock; partly rowlak; seismic performance

 

*国家自然科学基金 (51408063),湖南省教育厅一般项目(14C0040),长沙理工大学土木工程优秀特色重点学科创新性项目(16ZDXK06)。

 

作者简介:陈伟,博士,讲师,Email:chenwei85chen@163.com。

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