Assessment of offshore structures under extreme wave conditions by Modified Endurance Wave Analysis |
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| Institution: | 1. College of Engineering, Ocean University of China, Qingdao 266100, China;2. School of Resources Engineering, Xi''an University of Architecture and Technology, Shaanxi 710055, China;3. Dornsife College, University of Southern California, Los Angeles 90015, United States;4. Center for Ports and Maritime Safety, Dalian Maritime University, Dalian 116026, China;5. Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, China |
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| Abstract: | Recently, various approaches have been introduced to estimate the response of offshore structures in different sea states by stepwisely intensifying records. In this article, a more practical approach entitled Modified Endurance Wave Analysis (MEWA) considering the random and probabilistic nature of wave loading and utilizing optimal time duration is introduced. Generation procedure of this approach is described based on two practical wave theories: random and constrained new-wave. In addition, assessment of a simplified model representing a typical fixed offshore platform under extreme wave conditions in the Persian Gulf is performed making use of MEWA. A comparative analysis has been also carried out to investigate the accuracy and computational costs of MEWA. The results indicate that MEWA can be a time-saving and also reliable method both in design and assessment of offshore platforms. |
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| Keywords: | Modified Endurance Wave Analysis Extreme waves Probabilistic assessment Jacket platform |
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