日堆存量的随机分布规律对集装箱堆场容量的影响

Influence of Daily Stockpiles' Random Variation on the Capacity of Container Yard

以堆场利润最大为目标,建立确定集装箱堆场最优容量的随机规划模型,研究日堆存量的随机变化规律对集装箱堆场容量的影响。通过对比日堆存量分别服从正态、均匀、负指数分布时模型的最优解,得出在吞吐量一定的情况下,日堆存量服从正态分布时,堆场所需容量为最大;而堆场容量相同时,日堆存量服从负指数分布的集装箱堆场吞吐能力最大。

By studying the affection of the daily stockpiles’random variation on the optimal capacity of the container yard,a stochastic program in G Model for determining the optimal capacity of the container yard was established,in which yard＆#39;s maximum profit was considered as the target. By coparing different optimal solutions of models when the daily stockpiles respectively obey normal,uniform,negative exponential distribution,it’s concluded that in the case of a certain throughput,optimal capacity is largest when the daily stockpiles follow a normal distribution;in the case of a certain capacity,throughput capacity of the container yard is largest when the daily stockpiles follow negative exponential distribution.