Collapse of Wooden Houses Considering Instantaneous Instrumental Seismic Intensity

This paper addresses the collapse process of wooden houses subject to earthquake ground motions and characteristics of its ground motion by employing DEM analysis. In order to evaluate the traditional characteristic of ground motion, Instantaneous Instrumental Seismic Intensity (hereafter, IISI), which was previously proposed as an index of seismic intensity, is used. This paper combines both of the IISI and collapse process of house and evaluates the ground motion characteristics based on the results of DEM calculation, which induces a time-sequence of collapse modes.