Multi-Objective Location-Routing Network Optimization for Pre-Disaster Planning: A Case Study in the Philippines

A significant issue influencing the humanitarian supply chain (HSC) is facility location. The logistics of moving relief supplies from the main distribution center (DC) to distribution hubs (DHs) to evacuation centers (ECs), which need to be strategically placed and easily accessible from the affected areas, serve as the inspiration for this paper's location model. This enables the HSC to be prepared for any calamity and respond to it as quickly as possible. This work presents a multi-objective location-routing network optimization model designed for the pre-disaster phase. It focuses on optimizing locations of distribution hubs and evacuation centers to manage mandatory evacuations within the allowable response time. The model aims to minimize infrastructure costs while maximizing the coverage of evacuation centers to nearby residential areas, ensuring that relocations are carried out promptly during emergencies. A case study showcasing the model's effectiveness was conducted using AnyLogistix (ALX) software. Our findings identify the optimal placement of evacuation centers and distribution hubs, achieving cost reduction and improved response times.