Abstract: According to the characteristics of evacuation shelters' site selection and the working process of urban planning, a multi-constraints condition model for urban planning is established. On the basis of the existing model, the multi-objective function and multi-constraint conditions are formulated by considering the number of evacuation places, location selection, path service length and population capacity. A solution algorithm based on iterative computation is designed, the service range of evacuation sites is calculated under the support of ArcGIS network analysis function, and the advantages and disadvantages of the layout are analyzed. A location analysis system of evacuation sites based on GIS is developed. It is successfully applied in the location planning of shelters in the new town of Taizhou city, and good results have been achieved.

Key words: location model, evacuation shelter, urban planning, multi-constraints condition