风暴潮环境下随机风浪载荷数值模拟

he paper presents the numerical simulation method of random seas loading in the circumstance of storm surge to provide loads reference for structural dynamic analysis and fatigue damage of offshore platform. Based on the theory of harmony superposition method, numerical analysis method was used for numerical simulation of random seas using MATLAB programming.Davenport spectrum and P-M spectrum with 20m/s average wind velocity were selected to describe the feature of storm surge according to its high wind speed and long wave period. The results show that the simulation of time history of wind loads and wave forces can really reflect the actual feature of wind and waves in the circumstance of storm surge.