CONSTRUCTION OF DAMAGE FUNCTION FOR AN ANALYSIS OF THE ECONOMIC DAMAGE BY EARTHQUAKES WITH A FOCUS ON THE RECONSTRUCTION OF SHARED HOUSING

Abstract

Conventional economic housing damage estimation methods that quantitatively estimate the damage amount from the structural damage of the building, cannot consider variability inthe repair costs due tothe decisionsmadeby the victim. Therefore, in the assessment of economic housing damage, there is a concern that a large deviation may occur between the estimated value and the actual value. In this research, we will focus on thetypesof assessment systems the governments or local governments can employto ensurethe quick rebuilding of damaged houses. Economic housing damage was estimated in line with the actual damage situation, in particular by considering diverse housing reconstruction methods for apartments. We focused on the damage states and restoration examples provided in the Act on Special Measures concerning Reconstruction of Condominiums Destroyed by Disaster, constructed a damage function in line with the actual situation by constructing a restoration pattern model for reconstructing an apartment house. As a result of the earthquake simulation, we quantitatively showed that the variationsin reconstruction methods of collective housing makea large variation to the damage amount. In addition, we showed that the current measures and measures that governments and local governments assumed were not sufficient, and pointed out the issues to consider foreffective measures in the future.