This paper presents a mathematical model for calculating the generalized costs resulting from the transportation of containers from multiple locations in a geographical region to different container terminals serving this region. The generalized costs are calculated using a road and rail transport network model, enabling potential hinterlands of terminals in close competition to be delimited, rather than port hinterlands as is more common in the literature. The mathematical model is used in a case study on the consequences of building a new terminal in the port of Lisbon and closing down an existing terminal, implying a terminal relocation between river banks. The model shows that this relocation has significant implications in the delimitation of container terminal potential hinterlands across southern Portugal. Conclusions and policy recommendations regarding the consequences of such relocation are given in terms of relative competitiveness of the different terminals and suitability of the relocation.

本文提出了一个数学模型，用于计算将集装箱从一个地理区域中的多个位置运输到服务于该区域的不同集装箱码头所产生的广义成本。通用成本是使用公路和铁路运输网络模型计算得出的，从而可以确定紧密竞争的码头的潜在腹地，而不是像文献中更常见的港口腹地。在案例研究中使用了数学模型，该案例研究了在里斯本港建立新码头和关闭现有码头的后​​果，这意味着码头将在河岸之间迁移。该模型表明，这种迁移对葡萄牙南部整个集装箱码头潜在腹地的划界具有重要意义。