DEVELOPMENT OF A STOCHASTIC MODEL FOR PREDICTING THE TYPHOON WIND DAMAGE TO RESIDENTIAL HOUSES IN TOHOKU DISTRICT

Abstract

A stochastic model for predicting the typhoon wind damage to cladding of residential houses in the Tohoku District has been developed. The model consists of 'typhoon model', 'surface wind model', 'local pressure model', and 'wind resistance model'. In the 'surface wind model', the effect of local topography on wind speeds is considered. In the 'local pressure model', the roof geometry is classified into two groups, I.e. gable and hip roofs, and the local pressure coefficient is specified for each group. In the 'wind resistance model', the probability density function of cladding strength is represented by the lob normal distribution, which is predicted from the damage rate of cladding due to Typhoon 9119.