缅甸LNG码头船舶并靠和双侧靠泊动态系泊分析

Dynamic mooring analysis of ships berthing in alongside-banking model and double-side banking model of Myanmar LNG jetty

孟加拉湾开敞海域复杂水动力环境条件下,采取FSRU与LNG船舶并靠作业的平面布置。计算分析船舶在风、浪、流共同作用下的船舶运动量、系缆力和撞击力,并计算在不同波浪作用角度、不同周期下的允许作业波高,给出该海域采用并靠及两侧靠泊方式的泊稳条件。结果表明:1)FSRU船和LNG船的6个自由度运动量、系缆力和撞击力均随波高和波周期的增大而增大。2)在长周期波影响下,FSRU和LNG船的允许作业波高明显降低,纵荡运动更容易超标,LNG船舶的卸载对泊稳有利,FUSR和LNG船采用两侧靠泊的方式能更有效地抵御波浪影响。

Under the complex hydrodynamic environment in the open sea area of the Bengal bay,the plane layout of FSRU and LNG ships parallel operation was adopted.The movement,mooring force and impact force of the ship under the combined action of wind,wave and current were calculated.The allowable working wave height under different wave action angles and different periods was calculated.The berthing stability conditions of alongside-banking model and double-side banking model in this sea area were given.The results show that:1)The six degrees of freedom motion,mooring force and impact force of FSRU and LNG ship increase with the increase of wave height and wave period.2)Under the influence of long-period wave,the allowable berthing wave height of FSRU and LNG ship is significantly reduced,and the surge motion is easier to exceed the standard.The unloading of LNG ship is beneficial to the berthing stability.The double-side banking of FUSR and LNG ship can more effectively resist the wave impact.