Research On Roll-roll Ship Transportation On Heavy Cargos

With the development and globalism of the world economy, more and more manufacturing factories transferred from developed countries to china. The increasing of large item investment also brings the demand of huge cargo such as large facilities and construction facilities. And such huge cargos can be only transported by shipping. It is difficult for them to be shipped by traditional means to be loaded and unloaded with crane because of the greatness, weight and irregularness. So it is a good choice for them to be shipped by roll-roll shipping. Because of its huge size and weight, great influence have been given to the floatability and stability when the huge cargo is loading, so it's very important to control ship's floatability to ensure safety when the huge cargo is roll-roll loading.Great attention have been paid to make the control plan to match the vehicle speed and deballast speed when huge cargo is roll-roll loading due to the loading disasters. Research have been made on the above problems in this thesis to the process of huge cargo roll-roll loading.Based on the ship's statics theory, this thesis analyzed the preparation of huge cargo and barge carrier before loading and the change of every factor during loading, and then I give how to choose the time of huge cargo's roll-roll on shipping and how to choose the barge carrier. According to this, I summarized the principle of control scheme of ballast system when huge cargo is loading. Based on this, taking Microsoft visual studio 2005 as developing platform, I studied the huge cargo roll-roll on shipping computer control plan. By this, I made the accrual ship calculation, then gave the actual ballast control plan. Compared with the actual project, the calculation result is proved right and the ballast control system is feasible.According to the huge cargo roll-roll on computer control system and some barge carrier and some huge cargo, I made the actual calculation about how to choose barge carrier, the time of loading, the advanced route of huge cargo vehicle group during loading and how to use the ballast tank. According to the actual calculation result, we can find that the efficiency will be improved about 50% if possible. We can not only improve the safety of roll-roll shipment, but also the efficiency if we make the control plan by the calculation result of the computer control system.