高强钢绞线网-聚合物砂浆抗震加固既有建筑砖墙体试验研究  

Experimental study on existing brick walls strengthened with high-strength steel wire mesh and polymer mortar

作　　者：张蔚[1,2] 李爱群[1] 姚秋来[3] 王亚勇[3] 杨建平[1] 

机构地区：[1]东南大学土木工程学院,江苏南京210096 [2]江苏省建设厅省防震抗震领导小组抗震办公室,江苏南京210013 [3]中国建筑科学研究院工程抗震研究所,北京100013

出　　处：《建筑结构学报》2009年第4期55-60,共6页Journal of Building Structures

摘　　要：进行5片采用高强钢绞线网-聚合物砂浆面层加固的墙体和1片未加固的对比墙体的低周反复荷载试验,比较5种不同加固方案的破坏形态、承载力、延性和刚度退化等抗震性能。研究结果表明:采用高强钢绞线网-聚合物砂浆加固方法能有效地提高既有建筑砖墙体的极限承载力,改善墙体的延性和刚度退化,从而提高了墙体的抗震性能。分析了相应的加固机理,并提出了高强钢绞线网-聚合物砂浆加固既有砖墙体受剪承载力的计算方法。Five masonry walls strengthened with high-strength steel wire mesh and polymer mortar and one comparative model without strengthening were tested under reversed cyclic loading to study the effect of seismic retrofit. Comparisons of the ultimate strength, ductility, failure mode, and stiffness degradation of strengthened and comparative models showed the beneficial effects of the wire mesh mortar. The shear-resisting capacity of strengthened walls was improved, and the masonry wall shear failure mode was transformed into ductile failure mode. Based on the analysis of the strengthening mechanism, a method was proposed for calculating the shear strength of the masonry walls strengthened with steel wire mesh and polymer mortar.

关 键 词：砌体结构 抗震加固 高强钢绞线网 聚合物砂浆 拟静力试验 抗震性能 

分 类 号：TU365[建筑科学—结构工程] TU317.1