综合运输体系下的货运网络能力计算

对综合货运网络进行了相应的变换,通过网络变换将交通方式间的中转约束转化为路段的能力约束。计算各个OD对的前K条短路作为该OD对的可选路径集合。考虑OD需求是否拆分以及货物中转能力对综合货运网络能力的影响,建立了综合货运网络能力计算模型,并给出了求解思路以及相对应的免疫克隆算法。最后,选用一个算例对上述模型以及算法进行了分析验证。算例测试表明,该模型以及算法具有较好的实用性。

Capacity calculation for freight transportation network under comprehensive transportation system

The comprehensive freight transportation network was converted to convert the node-to-node transfer constraints to the capacity constraints of road sections.The K shortest paths of each OD pain was calculated and used as the selectable path set.Considering the influence of OD demand split or not and the freight transfer capacity of the node on the capacity of the comprehensive freight transportation network,a calculation model was built for the capacity of the comprehensive freight transportation network,and its solving idea and corresponding immune clone algorithm were presented.An example was chosen to test the proposed model and the corresponding algorithm,and the results showed that they were characterized by strong practicality.