加固的历史风貌建筑墙体试验及结构抗震分析

Earthquake Resistant Engineering and Retrofitting(2012)

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Abstract
针对天津现存的历史风貌建筑普遍存在砂浆强度低的情况,研究了原材料砖砌体及加固砖砌体试件的抗震性能。制作了2片原材料墙体试件、4片原材料墙体钢筋网水泥砂浆抹面加固试件,并对其进行了低周反复加载试验。应用等效体积单元(RVE)法对砖砌体进行模拟,对加固砖砌体则提出采用二次RVE法进行模拟,求得了其等效参数。用有限元模拟了加固墙体试件的低周反复荷载试验,并与试验进行了对比分析。最后对某一历史风貌建筑进行了加固前后的抗震性能有限元分析,验证了二次RVE法应用于加固砖砌体中的可行性。
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Key words
low fequency cyclic,finite element,historical buildings,reinforced brick masonry,representative volume element(RVE),steel-meshed cement mortar,anti-seismic analysis
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