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采用强耦合法对张力腿平台风电机组支撑结构进行模态分析,充分认识张力腿平台结构的动力特性。由计算结果可知:整体振型复杂,不同构件振型变化较大,平台的振动对上部塔架有连带作用;调整张力钢缆长度和平台水下位置对平台结构的动力特性影响不大,张力腿平台结构对水深、环境激励荷载具有很好的适应性;通过共振分析,有效区分结构自振频率和环境载荷的激励频率,避免共振危害的发生,可以满足海洋复杂环境下风电机组的正常运行。
The strong coupling method was used to analyze the modal analysis of the tension leg platform wind turbine support structure and fully understand the dynamic characteristics of the tension leg platform structure. From the calculation results, it can be seen that the overall mode shapes are complex and the vibration modes of the different components vary greatly. The vibration of the platform has an associated effect on the upper tower. Adjusting the length of the tension cable and the underwater position of the platform have little effect on the dynamic characteristics of the platform structure. The leg platform structure has good adaptability to water depth and environmental excitation load. Through resonance analysis, it can effectively distinguish the natural frequency of structure and the excitation frequency of environmental load to avoid the occurrence of resonance hazard, and can meet the normal operation of wind turbines in marine complex environment .