Seismic Reliability Assessment of Jacket Offshore Platforms

Publish Year: 1390
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

NSMI13_217

تاریخ نمایه سازی: 5 فروردین 1391

Abstract:

The performance-based earthquake engineering has gained major attention in assessment of the structural dynamicbehavior of Structures in the past decade. In this paper, Analytical models are employed including a comprehensivenonlinear model for offshore platforms that incorporates Fiber Elements which are capable of modeling post-bucklingbehavior of braces, Incremental dynamic analysis is then utilized to generate required data for performance basedevaluation based on nonlinear dynamic analyses and reliability theory with regard to uncertainty. Moreover, case studyon presently designated jacket offshore platforms in South Pars Gas Field (Phase 19 platform) Of the Persian Gulfregion has been performed. Two-dimensional models of the mentioned platforms and the pile stubs with actual soil insitucharacteristics are simulated using OpenSees software. This research is intended to contribute to the progress inimprovement of the methods on seismic design and evaluation of offshore structures.

Keywords:

Performance-Based Earthquake Engineering (PBEE) , Incremental Dynamic Analysis (IDA) Pile- Soil-Structure I nteraction , Uncertainty , Confidence Level , Mean Annual Frequency (MAF)

Authors

Ali Pourgharibshahi

Earthquake Engineer, JAMM Design & Development Eng. Co

Alireza Hadavand Khani

Structural Engineer, JAMM Design & Development Eng. Co

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