大丰项目海上升压站导管架滑移装船驳船系泊分析

Barge mooring analysis of jacket loadout to barge in Dafeng booster station project

大丰海上风电升压站项目导管架滑移装船时,驳船受到风力、流力及海浪综合作用,且导管架到达甲板预定位置后驳船受风、浪、流影响最大,故需对此时驳船系泊情况进行分析。利用ANSYS软件建立驳船多点系泊三维模型,输入风、浪、流数据参数,采用面元积分法在AQWA-LINE模块中对船体进行频域分析,得到RAO、一阶波浪力和二阶波浪力等水动力基本参数,然后在AQWA-DRIFT模块中对驳船靠泊的系泊系统进行时域分析,求解系泊缆张力及驳船漂移量,对系泊缆强度的安全性进行规范校核,确保装船过程中系泊强度。

During the jacket loadout to a barge in Dafeng offshore wind booster station project,the barge is under the force actions of wind, flow and wave;and the biggest influence appears when the jacket arrives at the predetermined position on the barge, so the analysis of barge mooring condition at this time is necessary. To get the basic hydrodynamic parameters such as hull RAO, the first order wave force and the second order wave force, the barge multi-point mooring three-dimensional model is established with ANSYS;and the frequency domain analysis is carried out by surface integral method in AQWA-LINE module. Then the time domain analysis is done in AQWA-DRIFT module to get the mooring line dynamic tension and the barge drift distance. Finally, the mooring line strength is checked according to relevant standard to ensure its safety.