Seismic Analysis of Offshore Patformsusing Endurance Time Method

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Hasani, Hamed | 2012

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 43537 (09)
University: Sharif University of Technology
Department: Civil Engineering
Advisor(s): Esmaeil Pourestekanchi, Homayun; Golafshani, Ali Akbar
Abstract:
In the countries with offshore oil field, Such as Iran, Offshore platforms are important. Hence seismic analysis of offshore platforms is important. Different methods for seismic assessment of these structures are presented. But these methods has own advantage and disadvantages. (Such as long analysis time and simplified assumptions of linear behavior), but by using Endurance Time method, the method had shown the ability to analyze complex structures, It is hoped that these problems can be resolved. In this study, providing a suitable model of soil and structures of a single pile and then an offshore platform using DEEPSOIL and Open SEES software and performance of these structures at different levels of performance have been studied. Then accuracy of Endurance Time method is compared with the actual earthquakes. In all cases Endurance Time accelerograms is provided good prediction of structural behavior under actual earthquake records. In this study, ISO 19901-2 is intended as a standard in performance base design
Keywords:
Endurance Time Method ; Single Pile ; Offshore Platforms ; Seismic Analysis

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