风机安装船悬挂电缆张力计算

Tension Calculation of The Suspension Cable of Wind Turbine Installation Vessel

风机安装船从甲板到桩腿顶部的悬挂电缆,在工作过程中,受桩腿的高度、风速的影响,桩腿顶端承载的拉力时刻在变化。采用解析法和有限元法,分别计算了悬挂电缆的风载系数,并对比验证两种方法的误差及有限元法的准确性。然后使用流体力学有限元方法计算了悬挂电缆的张力。最后计算悬挂电缆在不同风速和高度下的有效拉力,以此来获得电缆的极限拉力,并根据极限拉力设计桩腿顶部的承力工装。

Suspension cable from the deck to the top of the leg on the wind turbine installation vessel is affected by the height of leg and wind in the working process.As a result,the tension at the top of the leg changes at all times.The wind load coefficient of suspended cable was calculated by analytical method and finite element method,and the errors of the two methods and the accuracy of finite element method were compared and verified.Then the hydrodynamics finite element method was used to calculate the tension of the suspension cable.Finally,the effective tension of the suspended cable under different wind speeds and heights was calculated to obtain the ultimate tension of the cable,and the load-bearing tooling at the top of the pile leg was designed according to the ultimate tension.