First through the modal analysis, this paper obtained the dynamic characteristics of this structure, giving reference for relevant design.
首先通过模态分析，明确了此结构的动力特性；可为相关设计提供参考。
It provides theoretic basis for the design and safe operation of the tower and the further dynamic analysis of wind turbine tower through the modal analysis.
通过进行模态分析，为塔架设计、安全运行和结构动力学分析提供更可靠的理论依据。
Through the modal analysis, it is found that main vibration modes of floating crane structure are swing of rope-load system and vibration of boom, and the vibration frequencies are low;
通过模态分析发现，浮吊结构的振型主要表现为主钩钢丝绳-吊重系统摆动和臂架振动，振动频率都很低；
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