海上风电地震液化评价中国内国外两类方法的思考

Discussion about Seismic Liquefaction Potential Evaluations of Offshore Wind Farm Respectively Adopted by Chinese Codes and Methodology of U.S.A.and Europe

本文先对标贯试验法和静力触探周期阻力比法等两类国内外普遍采用的工程地震液化评价方法的优缺点进行了比较系统的理论分析,指出了国内采用的标准贯入试验法进行海洋工程地震液化评价的不足之处和国外采用的静力触探周期阻力比法评价液化的优点,然后以某海上风电工程为例,分别采用这两种进行液化分析比较。

In this paper,the advantages and disadvantages of SPT evaluation method from Chinese national code and CPT cyclic resistance ratio method from NCEER,which are widely adopted in engineering seismic liquefaction evaluation accordingly in China and throughout America and much of the world,are systematically theoretical analyzed.And the shortcomings of SPT evaluation method and the advantages of CPT cyclic resistance ratio method in evaluating seismic liquefaction potential of ocean engineering are pointed out.The liquefaction analysis and comparison of one Chinese offshore wind farm have then done with the two above methods as an example.It is found that the results from these two methodologies are different apparently between each other.