Spatial Interpolation Method for the High Accuracy Map of the Seismic Intensity Measure to Evaluate Structural Damage to Houses and Buildings

Abstract

In this study, we developed a spatial interpolation method for the high accuracy map of the seismic intensity measure to evaluate structural damage to houses and buildings for crustal earthquakes in Japan using Simple Kriging method. The seismic intensity is calculated using 1-1.5 second 20% damped response spectra, which is the equivalent period and damping when houses and buildings are damaged severely. The developed method can consider not only the effect of shallow soft soils but also the effect of deep sedimentary layers. We confirmed that the distribution of the seismic intensity measure can be estimated accurately using the developed method.