复合保温混凝土砌块墙体抗震性能试验  

Experimental study of seismic performance of composite insulation concrete block masonry wall

作　　者：温佳斌 张兰英 史世英 赵亮[1] 孙伟民[1] 

机构地区：[1]南京工业大学土木工程学院,江苏南京210009 [2]中国建筑设计院有限公司,北京100044 [3]苏州市世好建材新技术工程有限公司,江苏苏州215100

出　　处：《武汉大学学报（工学版）》2015年第3期378-382,386,共6页Engineering Journal of Wuhan University

基　　金：2011年度国家支撑计划村镇住宅低成本保温承重砌体结构抗震技术(编号:2011BAJ08B02-02)

摘　　要：共进行3片复合保温砌块墙体的水平低周反复荷载试验,考察了墙体的延性、耗能能力、刚度退化情况等抗震性能,分析了裂缝的产生、开展和墙体的破坏形态.综合分析了该砌块墙体的抗震能力,重点研究了高宽比对墙体破坏特征和抗震性能的影响.研究结果表明,墙体上高宽比对墙体的破坏形态有一定的影响.高宽比大于1,墙体呈弯曲破坏,高宽比小于1,墙体呈斜剪破坏.墙体的刚度随位移的增加而减小,其刚度退化趋势大致相同.开裂后,高宽比较小的墙体,破坏后刚度退化较为迅速.高宽比较小的墙体,开裂和极限荷载较大,但延性稍差.The horizontal low cyclic loading tests on 3 pieces of composite thermal insulation block masonry walls were conducted to investigate the walls＇ ductilities, energy dissipation, stiffness degradation and seismic performance. The crack initiating and propagation and the wall damage morphology are analyzed. A comprehensive analysis of the seismic capacity of the block masonry wall, focusing on the influence of as- pect ratio on the wall failure characteristics and aseismic performance is also made. The research results show that. there are certain failure mode on the wall height to width ratio on the wall. For the height to width ratio is greater than 1, the wail is bending failure; while this ratio less than 1, the wall is a diagonal shear failure. The wall stiffness decreases with the displacement increases; the stiffness degradation trend roughly the same. After the wall cracking for the wall with low ratio of height to width, after the destruction, its stiffness degradatesmore quickly. For the wall with small ratio of height to wiath, its cracking and ultimate load is larger; but its ductility is a bit poor.

关 键 词：复合保温砌块 抗震性能 破坏特征 

分 类 号：TU522.3[建筑科学—建筑技术科学]