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A bi-objective multimodal transportation planning problem with an application to a petrochemical ethylene manufacturer

机译：双目标多式联运规划问题及其在石化乙烯生产企业中的应用

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The aim of this paper is to analyze and improve the freight transportation plan by considering multimodal transportation with maritime, road, and railway transportation. We develop a bi-objective mathematical model, of which objectives are total cost and number of handling operations, an indicator for operational difficulty. The model decides on the optimal multimodal transportation plan including ship chartering and transportation mode decisions. We generate the Pareto frontier to allow an insight into the trade-offs in changing the transportation mix. We test the mathematical model on real-life instance of a petrochemical ethylene manufacturer located in Turkey, originally used in Ozpeynirci et al (Marit Econ Logist 16: 188-206, 2014). In addition to Ozpeynirci et al (Marit Econ Logist 16: 188-206, 2014), this paper considers a secondary objective and includes rail transport as a third mode in the multimodal transportation mix. In order to analyze the changes in ship chartering and mode selection decisions, we introduce three different scenarios and show that small changes in the transportation mode without restructuring the distribution network may result in significant savings.
机译：本文的目的是通过考虑海运，公路和铁路运输的多式联运来分析和完善货运计划。我们开发了一个双目标数学模型，其目标是总成本和装卸操作数，这是操作难度的指标。该模型确定最佳的多式联运计划，包括租船和运输方式决策。我们生成帕累托边界，以便深入了解更改运输组合时的权衡取舍。我们对位于土耳其的石化乙烯生产商的实际实例进行了数学模型测试，该实例最初用于Ozpeynirci等人（Marit Econ Logist 16：188-206，2014）。除了Ozpeynirci等人（Marit Econ Logist 16：188-206，2014）之外，本文还考虑了次要目标，并将铁路运输作为第三种模式纳入多式联运结构中。为了分析租船和模式选择决策的变化，我们介绍了三种不同的情况，并表明在不重组分销网络的情况下，运输模式的微小变化可能会节省大量资金。

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