嵌筋与外贴钢板加固木框架填充墙抗震性能试验研究  

Experimental Study on Seismic Performance of Brick Masonry Infill Walls with Wood Frame Strengthened by Embedded Steel Bars and External Steel Plates

作　　者：敬登虎[1] 颜江华[1] 曹双寅[1] 

机构地区：[1]东南大学土木工程学院,江苏南京210096

出　　处：《湖南大学学报（自然科学版）》2016年第7期43-49,共7页Journal of Hunan University:Natural Sciences

基　　金：国家"十二五"科技支撑计划资助项目(2012BAJ14B02)

摘　　要：为了研究木框架内砖砌体填充墙的抗震加固方法,共完成了3个缩尺试件的低周往复荷载试验.基于试验研究,得到了试件的破坏特征、滞回曲线、骨架曲线、承载力、延性和耗能能力等抗震性能指标.试验结果表明:未加固试件的破坏主要由填充墙的剪切裂缝控制且伴有平面外倾斜,木框架未见损伤;对砖砌体填充墙采用嵌入水平钢筋与端部外贴钢板进行加固可以有效地提高试件的承载力与延性,且一定程度的裂缝损伤对加固后试件的名义屈服荷载、峰值荷载影响不大,但对延性与能量耗散能力影响明显.In order to find a seismic strengthening method of brick masonry infill walls with wood frame, three small-scaled wall specimens were tested under low reversed cyclic loadings. Based on the ex- perimental investigation, structural seismic performances including failure modes, hysteresis curves, skeleton curves, load-carrying capacity, ductility, and energy dissipation capacity were evaluated. The test resuits showed that the non-strengthened specimen failed due to shear cracks and out-of-plane collapse of ma- sonry wall, but the wood frame was not damaged; the use of the embedded steel bars and externally fixed steel plates to strengthen the brick masonry infill wall effectively improved their load-carrying capacity and ductility; and the limited initial cracks had no influence on the nominal yield strength and peak strength, but decreased the ductility and energy dissipation capacity of the brick masonry infill walls with wood frame.

关 键 词：砖砌体填充墙 木框架 抗震加固 钢板 嵌入钢筋 

分 类 号：TU398.4[建筑科学—结构工程]