HPFL加固前后空斗墙片抗侧刚度试验  

Experimental study on stiffness of rowlock cavity wall strengthened with High Performance Ferrocement Laminate(HPFL)

作　　者：尚守平[1] 罗致[1] 奉杰超[1] 刘沩[1] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《广西大学学报（自然科学版）》2010年第4期519-523,共5页Journal of Guangxi University（Natural Science Edition）

基　　金：国家"十一五"科技支撑计划项目(2006BAJ03A10-06);湖南省科技厅计划重点项目(06sk4057)

摘　　要：为了解空斗墙的抗震性能,对9片空斗墙墙体进行了水平低周反复荷载试验,研究了空斗墙墙体抗侧刚度及刚度退化情况,再通过9片经高性能水泥复合砂浆钢筋网薄层(High Performance Ferrocement Laminate,简称HPFL)加固修复的空斗墙墙体的水平低周反复荷载试验,对加固前后空斗墙片各个阶段的抗侧刚度进行了对比分析。试验表明,空斗墙的砌筑方式、砂浆强度和竖向压应力对墙体初始刚度有所影响,但不能明显延缓墙体刚度退化的速度;加固后的墙体极限荷载刚度均有所提高,圈梁构造柱加固所提高的幅度高于剪刀撑加固。可为研究空斗墙抗震性能提供必要理论,为寻求经济有效的加固方式提供思路。Based on the tests of 9 rowlock cavity walls under low frequency cyclic load, the stiffness and stiffness degeneration of the walls was studied. Based on the tests of 9 rowlock cavity walls strengthened with High Performance Ferrocement Laminate （HPFL） , the stiffness of the walls before and after strengthening was analyzed comparatively. Test result shows that masonry method, mortar strength and compressive stress can influence the initial stiffness but they cannot slow down the speed of the stiffness degeneration obviously. The test result also shows that the limit load stiffness of rowlock cavity walls strengthened with HPFL was improved and the ring beam column structure is better than scissor structure. The research can provide some useful theoretical basis for seismic behavior of rowlock cavity wall housing, and also provide some idea for cost - effective strengthening.

关 键 词：空斗墙 低周反复荷载试验 刚度退化 高性能水泥复合砂浆钢筋网 加固 

分 类 号：TU362[建筑科学—结构工程]