SEISMIC DAMAGE EVALUATION OF HOUSEHOLD PROPERTY BY USING GEOGRAPHIC INFORMATION SYSTEM (GIS)

摘要

In this study, the method for quantitative loss estimation of household property due to an earthquake is proposed. At first, a questionnaire survey on seismic damage of household properties in the Hyogoken Nanbu Earthquake was performed. The results show that the damage ratios and patterns are different for the respective types of household property. Based on the result of the survey combined with the seismic intensity of the area, we proposed vulnerability functions that present the relation between seismic intensity and damage ratio of household property. These functions are useful for quantitative evaluation of household property damage. On the other hand, the value of household property owned by a family depends on income, family members and regions. The model of household property is established. Combining the model with the vulnerability functions of household property, the loss of household property for the hypothetical earthquake is estimated. The validation of the method is performed by comparing with the payment of earthquake insurance in the Hyogoken Nanbu Earthquake. Finally, the quantitative loss estimation of household property for the hypothetical Kanto earthquake is performed.