震度による地震被害系統評価のためのバルナラビリティ関数群の構成

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タイトル別名
  • Inventory Vulnerability Functions for Earthquake Damage Evaluation in Terms of Intensity Scale of the Japan Meteorological Agency
  • シンド ニ ヨル ジシン ヒガイ ケイトウ ヒョウカ ノ タメ ノ バルナラビ

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抄録

For correctly evaluating the future earthquake damage done to the regional elements at risk, it is neccessary to assess vulnerability describing the level of loss that would be caused to element or percentage of element damaged in the area as a result of experiencing earthquake ground motion of a certain severity. The purpose of this paper is to develop inventory vulnerability functions for evaluating earthquake damege in Japan.<br>To develop serviceable vulnerability functions for all the existing elements in Japan, we tried to translate the descriptions in the expounder of the intensity scale of the Japan Meteorological Agency (JMA) reported by the Tokyo Metropolitan Government Disaster Prevention Council into the functional equations on vulnerability. First, quantitative data were made from the expounder qualitatively expressing damage phenomena by introducing the percentile values equivalent to the adjective and adverb expressions on the scale of degree of damage within the descriptions. Second, vulnerability equations were derived from the quantitative data by means of the least squares method. We introduced a simple model in which the vulnerability characteristics of an element was expressed by a normal distribution function in terms of the seismic intensity on the JMA scale.<br>By follwing the above method we derived the inventory vulnerability functions for 56 kinds of elements; e. g., inhabitants, buildings of various kinds of construction, building contents, bridges, roadways, and lifelines. These functions agreed well with the damage data obtained in the past earthquakes. As an example of applying the assessed functions to damage evaluation, the probability that an inhabitant suffers injuries due to objects fallen or furniture overturned during an earthquake was evaluated by considering both functions on vulnerability of furniture and on ability of human behavior to evacuate. A group of these equations should be useful for total damage evaluation.

収録刊行物

  • 地震　第２輯

    地震　第２輯 44 (2), 93-108, 1991

    公益社団法人 日本地震学会

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