Structure-soil-structure interaction effects on the dynamic response of piled structures under obliquely incident seismic shear waves
Structure-soil-structure interaction effects on the dynamic response of piled structures under obliquely incident seismic shear waves
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DOI：
10.1016/j.soildyn.2015.07.013
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发表时间：
2015-11
影响因子：
4
通讯作者：
G. Álamo;L. Padrón;J. Aznárez;O. Maeso
中科院分区：
文献类型：
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作者：
G. Álamo;L. Padrón;J. Aznárez;O. Maeso
本文研究了斜入射剪切波作用下结构-土-结构相互作用对近桩结构动力响应的影响。为此，采用三维频域边界元-有限元（BEM-FEM）耦合模型分析了平行于波传播方向水平分量排列的三栋建筑物的响应。从频率域和时间域的角度研究了结构底部最大剪力的SSSI效应。结果用一组图表示，以便于估计具有相似振动特性的建筑物构型中相互作用效应的大小取决于它们之间的距离和入射角。这些结果表明，波浪类型和入射角对相互作用的影响很大，并不总是与通常假设的垂直入射角假设相对应的最坏情况。研究发现，对于非细长结构构型，随结构与激励距离的不同，SSSI效应可以显著放大或减小单个建筑的最大响应。
This work studies the structure-soil-structure interaction (SSSI) effects on the dynamic response of nearby piled structures under obliquely incident shear waves. For this purpose, a three-dimensional, frequency-domain, coupled boundary element – finite element (BEM–FEM) model is used to analyse the response of a configuration of three buildings aligned parallel to the horizontal component of the wave propagation direction. The SSSI effects are studied in terms of the maximum shear force at the base of the structures in both frequency- and time-domains. The results are presented in a set of graphs so that the magnitude of the interaction effects in configurations of buildings with similar vibration properties depending on the distance between them and the angle of incidence can be easily estimated. These results show a high influence of the wave type and angle of incidence on the interaction effects, not always corresponding the worst-case scenario with the commonly assumed hypothesis of vertical incidence. It is found that for configurations of non-slender structures, the SSSI effects can significantly amplify or reduce the single building maximum response depending on the separation between structures and excitation.