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-  2018 

密肋复合墙结构-基础-地基共同作用体系振动台试验 Shaking table test study of interaction systems of multi-ribbed wall structure-foundetion-sabsoil

Keywords: 密肋复合墙结构,相互作用,振动台试验,耦合效应

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Abstract:

为研究密肋复合墙结构-基础-地基共同作用体系地震响应的基本规律,设计制作了1/15比例模型密肋复合墙结构及模拟地基土箱,于土箱内侧设置边界阻尼材料,底部铺设卵石层,分层填筑黄土进行夯实,将结构模型按埋深要求置入土体,形成结构与地基相互作用体系.分别输入不同峰值单向、双向及3向地震波,测试了地基表面及结构楼层的位移及加速响应,计算比较了各测点的加速度及位移放大系数,对地基与结构的加速度与位移放大效应、地震耦合效应以及相互作用系统地震破坏机制进行了分析.结果表明,地震作用下结构放大效应及耦合效应均与烈度及测点位置高度有关,试验加载后地基破坏较严重,上部结构保持基本完好.因此,考虑地基与结构相互作用及地震耦合作用后,在设计中可对结构地震效应进行适当调整

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