Semi-probabilistic method for evaluating system redundancy of existing offshore structures |
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| Authors: | Kaisheng Chen Shengkun Zhang |
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| Institution: | aDepartment of Mechanical and Manufacturing Engineering, The University of Portsmouth, Portsmouth, Hants, P01 3131, UK;bDepartment of Naval Architecture and Ocean Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China |
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| Abstract: | Various forms of recently appeared concepts of structure system redundancy are studied. A new measure for existing structure redundancy is proposed. By introducing the concept of structure system failure at the mechanism level and the concept of equivalent reliability index, the evaluation of safety criteria for existing offshore structures is developed. By employing the method presented in this paper, system redundancy has been evaluated for some numerical examples and satisfactory results have been drawn. |
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