Determination of Seismic Fortification Level of Offshore Platforms in China

摘要：

The current seismic design code commonly used in the world is RP2A-WSD compiled by American Petroleum Institute, there is still no specific seismic design code for offshore platforms in China. In this paper, a brief introduction of RP2A-WSD code is given at first, and the comparison between the seismic fortification levels of RP2A-WSD and that of Chinese GB17503-1998 and GB50011-2001 suggests that the levels of Chinese Codes are overestimated. Secondly, the seismic damages and anti-seismic design requirements of offshore platforms are discussed in view of their structural characteristics. On the basis of the analysis above, summing up the factors, such as the seismic activity in the waters of China, structural characteristics of offshore platform,seismic design goal, and the seismic fortification experiences of related engineering, we recommend that the seismic fortification level of strength design take a return period of 200 years, and that of deformation design take a return period of 3000 years respectively for offshore platforms in China. Finally, the comparison with other Chinese Codes of related industries shows that the recommended fortification level is safe and rational.

关键词： Offshore Platform Seismic Design Seismic Fortification Level Return Period

作者: Yuejun LU Yanju PENG Rongyu TANG Haijun SHA

作者单位: Researcher,Institute of Crustal Dynamics,China Earthquake Administration,Beijing,China Associate Researcher,Institute of Crustal Dynamics,China Earthquake Administration,Beijing,China

会议类型: 国际会议

会议名称: 14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）