Analysis and evaluation on the planning of urban open space for urban disaster prevention

Abstract

Urban disaster prevention is an important aspect in evaluating the whole-function of a city. It is the most important and actual method to make full use of urban open space and to construct urban disaster prevention system in the work of preventing urban disasters. This paper presents an approach to solve the problem about the population evacuation during the earthquake, and a new method to spread out population data which can distribute the population in a district and locate to every house finally. At the core of the algorithm, the Wave-front Method is used to calculate service range of each open space. Urban planners can evaluate the layout of urban open space according to the distribution of population and traveling time predicted. Lastly, this paper provides some evaluating indexes for open space to integrate all open space units.