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Seismic Reliability Analysis of Offshore Fixed Platforms Using Incremental Dynamic Analysis | ||
Civil Engineering Infrastructures Journal | ||
مقاله 1، دوره 51، شماره 2، اسفند 2018، صفحه 229-251 اصل مقاله (1.78 M) | ||
نوع مقاله: Research Papers | ||
شناسه دیجیتال (DOI): 10.7508/ceij.2018.02.001 | ||
نویسندگان | ||
Mohammad Reza Mohammadizadeh* 1؛ Kazem Vahidi1؛ Hamid Reza Ronagh2 | ||
1Department of Civil Engineering, Faculty of Engineering, University of Hormozgan, Bandar Abbas, Iran | ||
2Centre for Infrastructure Engineering, Western Sydney University | ||
چکیده | ||
It is generally accepted that performance-based design has to be reliability-based. Seismic performance evaluation is based on nonlinear dynamics and reliability theory taking into account uncertainties during analysis. Considering the economic importance of jacket type offshore platforms, the present research aims to assess the seismic performance of offshore steel platforms. In this study, three platforms located in the Persian Gulf were modeled using three dimensional structural modeling tools. Each platform was modeled and analyzed using both rigid and pinned connections. Reliability analysis was performed in accordance with Federal Emergency Management Agency (FEMA) guidelines using the results of incremental dynamic analysis for the three platforms. The results showed that platforms possessing rigid connections provide the desired confidence level of FEMA for the performance level of collapse prevention while only one platform with pinned connections was able to provide the desired confidence level. | ||
کلیدواژهها | ||
Incremental Dynamic Analysis؛ Offshore Platforms؛ Performance Levels؛ Seismic Behavior | ||
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