再生混凝土多孔砖墙体抗震性能试验  

Seismic Behavior of Recycled Concrete Perforated Brick Masonry

作　　者：郭樟根[1] 吴灿炜 孙伟民[1] 倪天宇[1] 

机构地区：[1]南京工业大学土木工程学院,江苏南京210009

出　　处：《应用基础与工程科学学报》2014年第3期539-547,共9页Journal of Basic Science and Engineering

基　　金：国家自然科学基金(50708045);江苏省六大人才高峰资助项目(07-F-015)

摘　　要：为了考察再生混凝土多孔砖墙体的抗震性能,进行了3片再生混凝土多孔砖墙体在不同竖向荷载作用下的水平低周反复荷载试验,分析了墙体的受力全过程、破坏特征及极限承载力,探讨了墙体的滞回特性、骨架曲线、延性、耗能能力等抗震性能.结果表明,再生混凝土多孔砖墙体的受力全过程、破坏形态和普通混凝土多孔砖墙体基本相同,再生混凝土多孔砖墙体的滞回曲线较饱满,延性系数较高,耗能能力较强,具有良好的抗震性能,墙体的刚度退化趋势大致相同.再生混凝土多孔砖墙体在无竖向荷载作用下破坏时的裂缝数量较少,主裂缝明显;在施加竖向荷载后破坏时裂缝细而密,无明显主裂缝,表明随着竖向荷载的增加,墙体受力均匀,强度得到发挥.参考现行规范和已有研究成果,提出了再生混凝土多孔砖墙体抗震受剪承载力计算公式.研究成果可供再生混凝土多孔砖的工程应用参考.In order to investigate the seismic performance of recycled concrete perforated brick masonry, three recycled concrete perforated brick walls were tested under low frequency cyclic reversed loadings. The damage process, failure mechanism, ultimate bearing capacity were studied. The seismic behavior such as hysteretic characteristics, deformation ability, ductility, energy dissipation capacity were analyzed. The test results show that the loading process and failure mode of recycled concrete perforated brick masonry is similar to those of ordinary concrete perforated brick walls, the recycled concrete perforated brick wall has good seismic performance. The specimens have good hysteresis loops and ductility, strong energy dissipation capacities. Based on the Code for Seismic Design of Buildings （ GB 50011--2010 ） and existing research results, the formula to calculate the shear capacity of recycled concrete perforated brick masonry was proposed. The results can provide reference for engineering applications of the recycled concrete perforated brick.

关 键 词：再生混凝土 多孔砖 低周反复荷载试验 抗震性能 

分 类 号：TU362[建筑科学—结构工程]