钢筋-砂浆面层交叉条带法加固砌体结构缩尺模型拟静力试验研究
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摘要
为了得到采用钢筋-砂浆面层交叉条带法加固砌体结构缩尺模型试件的破坏形态,评价其抗震储备能力,对经历地震模拟振动台试验后的模型试件进行了拟静力试验研究,分析了试件的破坏形态、荷载和位移特征,基于Pushover方法评价了试件的抗震能力。结果表明:试件的破坏模式为窗间墙体交叉条带附近开裂破坏,未形成贯通交叉裂缝,交叉条带法加固可有效改善窗间墙体的破坏形态;试件具有较好的变形能力和延性;对振动台试验后未破坏的试件采用拟静力试验方法再次进行试验的综合试验方法是可行的。
In order to obtain the failure modes and evaluate the seismic capacity of the specimen of masonry structure reinforced by using steel bar-mortar layer crossed strip method, the quasi-static test of the specimen after seismic simulation shaking table test was carried out. The failure modes, load and displacement characteristics of the specimen were analyzed, and the seismic capacity of the specimen was evaluated based on Pushover method. The results show that the failure mode of the specimens is that cracks are formed near the crossed strips between windows but not crossed and through the strips. The crossed strip can effectively improve the failure mode of the wall between windows. The specimens have good deformation capacity and ductility. It is feasible to adopt the quasi-static test method for undamaged specimens after shaking table test.
In order to obtain the failure modes and evaluate the seismic capacity of the specimen of masonry structure reinforced by using steel bar-mortar layer crossed strip method, the quasi-static test of the specimen after seismic simulation shaking table test was carried out. The failure modes, load and displacement characteristics of the specimen were analyzed, and the seismic capacity of the specimen was evaluated based on Pushover method. The results show that the failure mode of the specimens is that cracks are formed near the crossed strips between windows but not crossed and through the strips. The crossed strip can effectively improve the failure mode of the wall between windows. The specimens have good deformation capacity and ductility. It is feasible to adopt the quasi-static test method for undamaged specimens after shaking table test.
引文
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[3] 建筑抗震试验规程:JGJ/T 101—2015 [S]. 北京:中国建筑工业出版社,2015.
[4] 徐培福,傅学怡,王翠坤,等.复杂高层建筑结构设计[M].北京:中国建筑工业出版社,2005.