Reliability-Based Load and Resistance Factors Design for Offshore Jacket Platforms in the Bohai Bay: Calibration on Design Factors |
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Authors: | JIN Wei-liang HU Qi-zhong SHEN Zhao-wei and SHI Zhong-min |
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Institution: | Institute of Structural Engineering, Zhejiang University, Hangzhou;Institute of Structural Engineering, Zhejiang University, Hangzhou;Institute of Structural Engineering, Zhejiang University, Hangzhou;Research Centre of China National Offshore Oil Corporation, Beijing |
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Abstract: | For the fulfillment of the probability-based structural design for the offshore jacket platforms in the Bohai Bay, the design factors of loads, resistance and load combinations are much necessary to be calibrated according to the proposed target reliability index. Firstly, the limit states function for the offshore jacket platforms is introduced. Then, four approaches to calibrate the factors of load and resistance are presented and compared. Afterwards, the methods to calibrate the load combination factors are developed. Finally, the factors of load, resistance and load combination for the offshore jacket platforms in the Bohai Bay are calibrated and the corresponding design formulae are recommended. The results are proved to be rational in practice, and also illustrate that the proposed target reliability index for offshore jacket platforms in the Bohai Bay is also appropriate. |
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Keywords: | offshore jacket platform load and resistance factor load combination factor calibration Bohai Bay |
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