Offshore wind power suction pile and jacket interface equivalent stiffness calculation method

The invention provides an offshore wind power suction pile and jacket interface equivalent stiffness calculation method. The method comprises the following steps that S1, the equivalent shear modulus of a soil body is determined; s2, establishing a foundation-foundation soil elastic stiffness matrix; s3, determining each stiffness coefficient in the stiffness matrix according to the size of the suction pile and the soil parameters, and establishing a stiffness mathematical model; by applying the technical scheme, powerful support can be provided for the design of the offshore wind power foundation structure, the analysis process is greatly simplified, the design efficiency is improved, and the calculation accuracy is ensured. 本发明提供了一种海上风电吸力桩与导管架分界面等效刚度计算方法，包含以下步骤：步骤S1：确定土体的等效剪切模量；步骤S2：建立基础-地基土弹性刚度矩阵;步骤S3：根据吸力桩尺寸、土壤参数确定刚度矩阵中各个刚度系数，建立刚度数学型；应用本技术方案可为海上风电基础结构设计提供了有力支撑，大大简化了分析过程，提高设计效率并保证了计算准确性。