A Location Problem on Urban Emergency Material Depositories Considering NewBuilding Scenarios:A Case Study of Shijiazhuang City
针对城市应急物资储备库选址，考虑交通类型和需求点风险程度，建立数学模型并求解，以石家庄为例给出新建和现有储备库的空间布局建议。
Formulating mathematical models that reflect the essence of emergency supplies is needed, which helps to realize the optimization and scientific of urban emergency services. The traditional facility location problems seldom think of the satisfaction difference between demand sites within the covering radius of facility. Also, there are few documents analyzing the location problem of urban new- building emergency material depositories with quantitative methods. In this paper, a model that takes into account characteristics of the type of transportation and the degree of risk of demand sites is formulated, which aims to integrats urban existing emergency material depository and emergency material demand spots and to solve the location problem of urban existing and new- building emergency material depository. A heuristics is introduced to solve the considered model. Then, we get the spatial allocation result of existing and new- building emergency material depository of Shijiazhuang City and conclude that the formulated mathematical model can contribute to assigning optimal service districts, to determining the value of service radius and to realizing map layout of material depositories. The results also show that: Shijiazhuang City should focus on strengthening the construction of NO.135 Depository, newly built emergency materials depositories in Xingtang County, Jinzhou City and Yuanshi County, and should strengthen the construction of related infrastructure facilities. Finally, we also propose extensions to our research.