ミクロモデルに基づく地震時火災延焼シミュレーションに関する研究

Abstract

At the time of large-scale earthquake generating, many fires are predicted to generate simultaneously on a scale of exceeding fire-fighting power far. Many fires which cannot extinguish the fire will break out. Therefore, It is required to carry out the simulation of the fire spread form, to carry out damage prediction, and to take the measures according to damage immediately after earthquake generating. In this study, the micro model fire spread simulation method for every house has been developed. In order to verify the validity of this simulation method, reappearance of the fire of the Mikura-Sugawara, Nagata-ku, Kobe-shi area in the Hyogoken-Nanbu earthquake of 1995 was tried. Moreover, the fire generated in the past in Nagoya-shi was investigated. It, the influence of building collapse by earthquake damage, fire-extinguishing activities, and jumping fire were taken in for the simulation. Establishment of the more accurate fire spread simulation method was aimed at. The process of a simulation in this study is described. It is the beginning first, the simulation region is elected. A position, building form, building structure, and the number of stories are file-ized about the building in the region. Calorific function, distance between buildings, wind velocity, direction of the wind are given to the file-ized date, and a simulation is performed. The result, the simulation of the form near the actual spread of a fire was able to be carried out. The obtained fire spread speed became actually near as compared with the conventional formula. The fire spread situation of an earthquake fire and the fire-fighting effect were predicted in the Habashita, Nishi-ku, Nagoya-shi area with the application of this simulation method.