高强钢绞线-聚合物砂浆加固低强度砖砌体的试验研究  

Experimental Study on Strengthening Brick Walls of Low Strength with High Strength Steel Wire and Polymer Mortar

作　　者：杨建平[1] 李爱群[1] 王亚勇[2] 张蔚[1] 姚秋来[2] 

机构地区：[1]东南大学土木工程学院,南京210096 [2]中国建筑科学研究院工程抗震研究所,北京100013

出　　处：《防灾减灾工程学报》2008年第4期473-478,共6页Journal of Disaster Prevention and Mitigation Engineering

基　　金：国家科技支撑计划项目(2006BAJ03A04)资助

摘　　要：提出了采用高强钢绞线-聚合物砂浆技术对低强度砖墙进行抗震加固的方法,通过一片采用高强钢铰线-聚合物砂浆面层加固的墙体和一片未加固的对比墙体的低周反复荷载试验,对该加固方法进行了检验。详细地分析了这两片墙体的破坏形态、极限承载力、滞回特性、耗能能力及刚度退化等抗震性能,并提出了加固墙体的抗剪承载力计算公式。研究结果表明,高强钢绞线-聚合物砂浆加固方法能有效地提高墙体的极限承载力,改善墙体的延性和刚度退化,并提高墙体的能量消耗能力,从而提高墙体的抗震性能。A scheme for strengthening brick walls of low strength with high strength steel wire and polymer mortar jacket is proposed,and two pseudo-static tests of a strengthened masonry wall and another unstrengthened one are performed to verify the effectiveness of the strengthening scheme.Such seismic performances as the failure modes,ultimate strengths,hysteretic characteristics,energy dissipation capacity, and stiffness degradation of the two walls are studied,and the formula for calculating the ultimate shear strength of strengthened brick walls is put forward.The experimental results show that the seismic performances of strengthened walls are improved significantly by the strengthening scheme with increased ultimate shear strength,enhanced ductility,delayed degradation of stiffness,and upgraded capacity of energy dissipation.

关 键 词：砌体结构 抗震加固 高强钢绞线 聚合物砂浆 拟静力试验 

分 类 号：TU362[建筑科学—结构工程]