考虑易腐品运输的集装箱班轮船期设计和加油策略

Vessel scheduling & refueling strategy in container liner shipping with perishable assets

针对易腐品集装箱班轮运输船期设计和加油策略问题,通过分析港口燃油价格差异和折扣因素,构建了以航线班轮运输服务周总成本最小化为目标的混合整数非线性规划模型,设计了分段线性割线逼近算法进行模型求解.以中国远洋海运集团有限公司AEU6航线为例,运用1 000个场景的大量数值进行了模拟计算,结果显示,与Dulebenets和Ozguven (2017)相比,本文研究平均节省班轮运输服务周总成本1.52%,平均节省易腐品腐败损失成本1.05%.研究表明,本文提出的模型方法,可有效地降低易腐品腐败损失成本和班轮运输服务周总成本;提高船公司加油策略选择和船期设计的灵活性,提高班轮运输的准班率,便于船公司与港口集装箱码头运营商签署共赢协议,研究结论可为船公司易腐品班轮运输经营提供科学的决策参考.

In this paper,the problem of vessel scheduling and refueling strategy in container liner shipping with perishable assets was studied considering the difference and discount factors of port fuel price.A mixed integer nonlinear programming model was established,where the total liner shipping route service weekly cost was minimized.A set of piecewise linear secant approach was applied to the original model.Taking the AEU6 route served by CHINA COSCO SHIPPING GROUP as an example,a large number of numerical values of 1 000 scenes were used for simulation calculation.The results show that the proposed model outperforms the existing model,where proposed by Dulebenets & Ozguven(2017),in terms of the total route service weekly cost on average decreased 1.52% as well as the total asset decay cost on average decreased 1.05%,respectively.It indicates that the proposed model will help to decrease the total asset decay cost and the total liner shipping route service weekly cost.It makes more flexible for the liner shipping company to design the vessel schedule and make the decision on refuel strategy.It improves the punctuality rate of liner shipping.It makes easier for the liner shipping company to sign a win-win contractual agreement with the marine container terminal operator.The research conclusion can provide scientific reference for the liner shipping company to make decisions on operation in liner shipping with perishable assets.