美国API RP2A-WSD规范对我国海洋石油平台抗震设防的启示

我国尚未制定海洋石油平台的抗震设计规范,目前世界海洋油气行业的抗震标准主要执行的是美国RP2A—WSD规范,该规范是基于是美国近海岸地震危险性区划结果而制定．本文介绍了RP2A-WSD规范及美国近海岸地震区划研究结果,论述了我国渤海海域地震活动性特性与地震动参数的研究内容,渤海海域是我国海洋石油开发的主要场所,且地震活动性较高,与美国南加利福尼亚近海岸具有可比性,然后对两者进行对比分析,并依据两者之间的对比结果,以及海洋石油平台的重要性和使用特征,对我国海洋石油平台的抗震设防标准和设防水准提出建议。

API RP2A-WSD code's inspiration to seismic design of offshore platform in China

There is no seismic design code for offshore platforms in China and the commonly used criterion by offshore oil industry is RP2A-WSD which is based on the seismic hazard of coastal waters of the United States. A brief introduction is given to RP2A-WSD and the ground motion zonation of U.S. costal waters. For Bohai sea is a main source of offshore oil and gas where seismicity is high, the seismic characteristic and ground motion are discussed, then a comparison is made between the seismicity of Bohai and Southern California. On the basis of the comparison and the importance and characteristic of offshore platform, a proposition about seismic design level is put forward.