Designing Sustainable Hierarchical Hub Location Model with Multi-Modes of Transportation in The Presence of Disruption (Intentionally and Unintentionally)

Passenger transferring between origins to destinations, regarding the matter of the variety of services are the main goal in a public transportation (air and ground systems). So, considering the different types of vehicles and increasing different levels of services are the essential issues in hierarchical hub location problems. As well as the effect of disruption (Deliberately and unintentionally), changing the scope of the connectivity in a distribution systems, locations, re–allocations and designing the sustainable network in the presence of disruption are the problems which are less reviewed in a hierarchical hub location field. In this paper a linear model used for designing a sustainable capacitated hierarchical hub location problems considering multi modes of transportation based on two scenarios, with or without any disruption. This model has been solved with GAMS 23.4.3 optimization software and Monte Carlo simulation method (MATLAB R2016a). Based on the results of the network without any disruption, the disruption probability obtained to be used in a network under disruption. The results show that, the model and the proposed solution method, can satisfy the demands in the presence of disruption, changing the location of non–central hub nodes and the re–allocation in each levels of hierarchy. Increasing the discount factors, disruptions and the number of non-central hub nodes increases the total costs of the hierarchical hub network. Also increasing the levels of services, considering the different paths and vehicles can expand the decision making ability in a network.