Nonlinear Dynamic Analysis of Pile Foundation Subjected to Strong Ground Motion Using Fiber Elements
محل انتشار: مجله بین المللی فناوری دریایی، دوره: 1، شماره: 1
سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 155
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شناسه ملی سند علمی:
JR_IJMTE-1-1_004
تاریخ نمایه سازی: 24 بهمن 1400
چکیده مقاله:
In this paper, pile behavior embedded in layered soil deposits subjected to seismic loadings is analyzed using a nonlinear fiber element for simulation of soil – pile interactions. In the created model, both pile and surrounding soil are modeled using fiber elements in a practical Beam on Nonlinear Winkler Foundation (BNWF) concept. Herein, the features of DRAIN–۳DX finite element software are utilized in order to develop the model. In the presented approach for performing of Seismic Soil-Pile-Superstructure Interaction (SSPSI) analysis, the constitutive behavior of soil and steel pile are assigned to fiber elements using available soil p-y backbone curves and steel stress-strain relationship. The effect of radiation damping is incorporated into the model by adding a dashpot in parallel with nonlinear p-y element. In order to consider the effects of free field site response in different soil layers, EERA and NERA programs are used. Results of the analyses are compared with available experimental data. The results are in good agreement with the available centrifuge test results. The main purpose of the proposed method is to make DRAIN–۳DX software capable of performing SPSSI analysis of any pile supported structure especially Jacket Type Offshore Platforms (JTOP).
کلیدواژه ها:
Nonlinear Dynamic Analysis ، Fiber Elements ، Jacket Type Offshore Platforms ، Seismic Soil-Pile-SuperStructure Interactions ، Centrifuge experiments
نویسندگان
Behrouz Asgarian
K.N.Toosi University of Technology, Civil Faculty
Mahdi Boroumand
K.N.Toosi University of Technology, Civil Faculty
Mohamad Zarrin
K.N.Toosi University of Technology, Civil Faculty