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.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2009年第4期55-60,共6页
Journal of Building Structures
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
masonry structure
seismic strengthened
high-strength steel wire mesh
polymer mortar
pseudo-static test
seismic behavior
