DEVELOPMENT OF FRAGILITY CURVES FOR WOOD-FRAME HOUSES BASED ON THE RESULT OF SEISMIC CAPACITY EVALUATION IN YOKOHAMA CITY

Abstract

This paper presents the method to construct fragility curves for wood-frame houses considering the results of seismic capacity evaluation conducted in Yokohama City. Assuming the equality of the distribution of seismic performance index in Nada Ward and Yokohama City, the empirical fragility curves for Nada Ward based on data due to the 1995 Hyogoken-Nanbu Earthquake were employed to develop fragility curves corresponding to the seismic performance index for wood-frame houses. The fragility curves thus obtained are the function of the seismic performance index of an individual house, and hence they may be useful for seismic damage assessment in a district level.