Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Seismic Analysis of Pile Group in Soil Slopes Using Pseudostatic Approach
This paper evaluates a simple approximate pseudostatic method for estimating the maximum internal forces and horizontal displacements of a pile group located in a soil slope. The method is an extension of an existing similar method developed by the authors for the case of a horizontal ground surface. The method for horizontal ground involves two main steps: 1. First, the free-field soil movements caused by the earthquake are computed. 2. Second, the response of the pile group is analysed, based on the maximum freefield soil movements as static movements, as well as a static loading at the pile head, which depends on the computed spectral acceleration of the structure being supported. The methodology takes into account the effects of group interaction and soil yielding. Simple modifications are applied to take into account the effect of slope on the seismic deformations of the pile group, making use of the Newmark sliding block method. The applicability of the approach is verified by comparisons with both experimental shaking table tests, and with the results of a more rigorous analysis of a pile-supported wharf. It is demonstrated that the proposed method yields reasonable estimates of the pile maximum moment and horizontal displacement for many practical cases, despite its relative simplicity.
Seismic Analysis of Pile Group in Soil Slopes Using Pseudostatic Approach
This paper evaluates a simple approximate pseudostatic method for estimating the maximum internal forces and horizontal displacements of a pile group located in a soil slope. The method is an extension of an existing similar method developed by the authors for the case of a horizontal ground surface. The method for horizontal ground involves two main steps: 1. First, the free-field soil movements caused by the earthquake are computed. 2. Second, the response of the pile group is analysed, based on the maximum freefield soil movements as static movements, as well as a static loading at the pile head, which depends on the computed spectral acceleration of the structure being supported. The methodology takes into account the effects of group interaction and soil yielding. Simple modifications are applied to take into account the effect of slope on the seismic deformations of the pile group, making use of the Newmark sliding block method. The applicability of the approach is verified by comparisons with both experimental shaking table tests, and with the results of a more rigorous analysis of a pile-supported wharf. It is demonstrated that the proposed method yields reasonable estimates of the pile maximum moment and horizontal displacement for many practical cases, despite its relative simplicity.
Seismic Analysis of Pile Group in Soil Slopes Using Pseudostatic Approach
Elahi, H. (Autor:in) / Poulos, H. G. (Autor:in) / Moradi, M. (Autor:in) / Ghalandarzadeh, A. (Autor:in)
GeoCongress 2012 ; 2012 ; Oakland, California, United States
GeoCongress 2012 ; 2273-2282
29.03.2012
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Seismic Analysis of Pile Group in Soil Slopes Using Pseudostatic Approach
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