LNG船对船过驳作业碰垫配置研究

发布时间：2018-06-24 08:45

本文选题：船对船过驳 + 碰垫配置　；参考：《大连海事大学》2015年硕士论文

【摘要】：海上液态货物的船对船过驳作业是液态货物卸载的一种重要形式。随着我国LNG (liquefied natural gas)进口量的增加,海上运输将承担起越来越大的运输份额,使得LNG的船对船过驳作业将会得到越来越多的应用。而过驳船舶船间碰垫的配置则是船对船过驳作业中必不可少的一环,科学合理地配置船间碰垫对LNG船对船过驳作业安全有着重要的现实意义。本文首先对比分析了两种基于能量守恒定律的常用撞击能量计算公式,选取国际航运会议的计算公式作为受货船靠泊供货船时的撞击能量计算公式。然后使用系缆力计算软件OPTIMOOR研究了LNG船对船过驳作业中过驳船舶的船间碰垫的受力规律。运用控制变量法,找出了可使船间碰垫受力最大的作业工况,得出船对船过驳作业中船间碰垫的受力规律。在确定所需配置碰垫的规格和数量的同时,通过综合分析并联式和串联式碰垫布置法的优缺点以及可用于过驳作业的各种碰垫的特点,最终得出了LNG船对船过驳作业中船间碰垫配置的优化建议。基于以上分析结果,本文结合实际需求,以四种典型大型LNG运输船为过驳母船,以一种新型支线LNG运输船为过驳子船,给出了四种过驳组合的碰垫配置的优化建议。
[Abstract]:Ship-to-ship barge operation of liquid cargo at sea is an important form of liquid cargo unloading. With the increase of (liquefied natural gas) import in China, the marine transportation will bear more and more share, which will make the ship-to-ship barge operation more and more widely used. The configuration of the cushion between ships passing barge is an indispensable link in the operation of ship to ship barge. It is of great practical significance to configure the cushion between ships scientifically and reasonably for the safety of LNG ship to barge operation. In this paper, two commonly used formulas for calculating the impact energy based on the law of conservation of energy are compared and analyzed, and the formula of the international shipping conference is chosen as the formula for calculating the impact energy when the cargo ship is berthing the supply ship. Then, the force law of the intership cushion in the operation of LNG ship to barge is studied by using the mooring cable force calculation software OPTIMOOR. By using the control variable method, the working conditions which can make the maximum force on the collision pad between ships are found out, and the force law of the collision pad between the ships in the operation of ship to ship crossing and barge is obtained. At the same time of determining the specifications and the quantity of the needed colliding pads, the advantages and disadvantages of the parallel and series-type colliding arrangements and the characteristics of various kinds of impact pads which can be used in over-barge operations are analyzed synthetically. Finally, the optimal configuration of intership cushion in LNG ship-to-ship barge operation is obtained. Based on the above analysis results, four typical large LNG carriers are used as overbarge mother vessels and a new type of branch LNG carrier as overbarge sub-ship, and the optimization suggestions of four kinds of overbarge combination are given in this paper.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U693.34

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