Container terminal is not only the area for storing inbound and outbound containers, but also the place for pickup. Because of the uncertainty of pickup time, terminal operators have to rehandle the containers frequently which incur significant cost to the operators. In order to reduce the cost in rehandling, a time win dow mechanism for container pickup was introduced. A function of the subsidies to the terminal operators and a function of rehandling costs to the consignees were constructed. Based on these functions, the distribution of pickup times and the formulation of rehandling times were derived. Then, the problem of optimal pickup time windows allocation was proposed and the model was constructed. Because of the high computational complexi ty , a genetic algorithm was developed. Finally, a numerical example was given in two different modes, and the sensitivity analysis was conducted. By applying the time windows allocation mechanism, the rehandling op erations were greatly reduced, and both of the operational efficiency and the expected profits of the terminal operators were improved significantly.%码头堆场是供装卸船舶存放集装箱的场所,同时也是向货主交接集装箱的地方.由于取箱车辆到达时间的不确定性,码头运营方需要在堆场进行大量的翻箱作业,消耗大量的劳动成本.首先对码头取箱时间窗优化机制进行了说明,构建了码头方补助金函数与车辆方的成本函数,获得了车辆方取箱的到达率函数,进而得到了码头方的翻箱次数公式.然后,描述了集装箱码头堆场取箱时间窗优化问题,建立了取箱时间窗优化模型,并设计了求解的遗传算法.最后给出算例,分别对两种不同的取箱模式进行对比,并进行了灵敏度分析.通过对进口集装箱的提取时间进行取箱时间窗的优化分配,从而减少了码头方的翻箱操作,提高了码头的期望收益与运作效率.
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