摘要
针对砌体的加固,提出了采用机械开凿的方法在砌体上开水平槽植入钢筋并以高强灌浆料握裹固定的后植筋加固方法,制作了2片采用后植筋加固的墙体试件和2片未加固的对比墙体试件,进行了低周反复荷载作用下的对比试验,比较2种不同高宽比加固墙体的破坏形态、承载力、延性、刚度退化和耗能等抗震性能。研究结果表明:采用后植筋加固的墙体受剪承载力较对比墙体提高25%,延性和耗能能力也有很大提高。通过分析后植筋加固墙体的受力机理,提出了后植筋加固墙体受剪承载力的计算式。
A masonry wall strengthening method was proposed where horizontal slots are cut mechanically first and then embedding rebars with special glue bond. Two masonry walls strengthened with embedded rebars and two comparative models without strengthening were tested under low cycle reversed loading to study the effect of the strengthening method. Comparison of the ultimate strength, ductility, failure mode and stiffness degradation of the strengthened and the comparative models shows the beneficial effects of the embedded rebars. The shear-resisting capacity of strengthened walls is improved about 25%. Based on the analysis of the strengthening mechanism, a method was proposed for calculating the shear strength of the masonry walls strengthened with embedded rebars.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2013年第5期145-150,共6页
Journal of Building Structures
基金
乌鲁木齐既有建筑砌体结构抗震加固技术应用研究项目(G101310001)
关键词
砌体结构
后植筋加固
拟静力试验
抗震性能
masonry structure
embedded bars strengthening
quasi-static test
seismic behavior
