中文摘要：

将集装箱码头龙门吊装卸工艺抽象为闭排队网络模型，采用估算均值法计算了顾客到达和服务时间分布为一般情况的闭排队网络系统性能指标。仿真结果表明，闭排队网络模型计算结果可以为集装箱码头设备配置提供一定的决策支持。

英文摘要：

In this paper we present a closed queueing network model for the gantry crane loading/unloading facility in container terminals. We use an approximate mean-value algorithm to evaluate the system performance in which the inter - arrivals cannot be a Poisson stream and the service time doesn＇ t obey negative exponential distribution. The results from the simulation model show that the results from the queueing metwork analysis can support the decision about the optimal equipment allocation in container terminals.