Dynamic analysis of piled foundations in stratified soils by a BEM-FEM model

被引：85
|
作者：
Padron, L. A. [1 ]
Aznarez, J. J. [1 ]
Maeso, O. [1 ]
机构：
[1] Univ Las Palmas Gran Canaria, IUSIANI, Las Palmas Gran Canaria 35017, Spain
来源：
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING | 2008年 / 28卷 / 05期
关键词：
pile groups; pile-soil interaction; dynamic impedances; seismic response; BEM-FEM coupling;
D O I：
10.1016/j.soildyn.2007.07.005
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
In this paper, a 3D BEM-FEM coupling model is used to study the dynamic behavior of piled foundations in elastic layered soils in presence of a rigid bedrock. Piles are modelled by FEM as beams according to the Bernoulli hypothesis, and every layer of the soil is modelled by BEM as a continuum, semi-infinite, isotropic, homogeneous, linear, viscoelastic medium. First, the main points of the model are set out. Then, several results of vertical, horizontal and rocking impedances for single piles and 2 x 2 pile groups embedded in a stratum resting on a rigid bedrock, are presented. The influence on the dynamic response of stratum depth, soil stiffness and piled foundation configuration is discussed. Finally, the influence of the stratigraphy on the seismic response of a 3 x 3 pile group is analyzed, together with the pile-to-pile kinematic interaction and the wave-scattering phenomena. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：333 / 346
页数：14
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