Abstract: With the concept of green logistics and the consideration of the factors influencing the network costs and carbon emissions, a minimum logistics cost model, including transportation cost and time penalty cost, was established, and a minimum carbon dioxide emission model was also established, on the base of hub-and-spoke regional port transportation system and collecting and distributing system from ports to the hinterland. By rational allocation of traffic volume and transport capacity, the regional port cluster transportation system can be optimized. And then fuzzy mathematic programming method was applied to transform the dual objective problem into a single objective planning. CPLEX was used to solve the model and the efficiency of model was demonstrated by experiments when the confidence level was 0.1, 0.3, 0.5, 0.7, and 0.9 respectively. Finally, with green preference, the influence of 15 kinds of velocity combination with different types of ships and vehicles on the results was analyzed. The results show that considering transportation costs, time penalty costs and carbon emissions, the amount of direct transportation is more than the medium transport capacity under different membership degrees and the type of low fuel consumption ships and vehicles will be selected. With more attention on green factor, the ships and vehicles tend to work at low speed. The best combination of speed for boats and vehicles under different membership degrees will be calculated from the model.

Key words: traffic and transportation engineering, regional port cluster, hub-and-spoke transportation network optimization, carbon emission, fuzzy mathematic programming

摘要： 以绿色物流为理念，结合基于轴辐特征的区域港口运输系统和港口到腹地的集疏运系统，考虑网络成本与碳排放的影响因素，建立了包括运输成本和时间惩罚成本的最小物流成本模型及最小碳排放量模型，通过对区域港口群运输网络中运量和运力的合理配置来进行网络优化；引入模糊规划法，将双目标问题转化为单目标规划，运用CPLEX进行求解，结合算例，在模糊隶属度权重分别为0.1,0.3,0.5,0.7,0.9时，对模型进行应用分析；最后在绿色偏好下，针对不同船型、车型，分析了15种速度组合情形对结果带来的影响。研究结果表明：在综合考虑运输成本、时间成本、碳排放量时，不同隶属度下直达运输量均多于中转运输量，船舶、车辆偏向低油耗类型，随着绿色度提升，速度偏向低速行驶，不同隶属度下最佳的船速车速组合可以由模型计算得出。

关键词: 交通运输工程, 区域港口群, 轴辐式运输网络优化, 碳排放, 模糊规划