起重船近海风电场坐底施工作业分析.

Taking the crane vessel Sanhang Gong 5 as an example, combined with the environmental conditions of a certain nearshore wind farm, the technical problems involved in the construction and the whole process of the on-bottom setting of the crane vessel without relevant classification symbols were analyzed. The anchoring positioning and on-bottom stability were calculated. The wave current load was calculated by empirical formula and the wave force was calculated by using the frequency domain boundary element method. The calculation results show that under the condition of silt bottom material, the Sanhang Gong 5 needs to dive or float under the condition of velocity of flow less than 1.3 m/s to avoid anchor moving, in order to satisfy the on-bottom stability requirements, the initial amount of ballast water extra should be4500 t, and then reduced to 2500 t. [ABSTRACT FROM AUTHOR]