CONSTRUCTION AND APPLICATION OF ROBUST MODELING METHOD OF SUBSURFACE SOIL LAYERS FOR NUMERICAL ANALYSIS OF URBAN AREA GROUND MOTION DISTRIBUTION

Abstract

Estimation of urban seismic damage using simulation needs automatical modeling method of subsurface soil layers and buildings. This study focuses on subsurface soil layers and shows the method of constructing models by interporating urban borehole data. Important property of the modeling method is robustness, which means that the method works for borehole data with unconsistent layer orders. We developed the interporation method of soil data based on a robust determination method of leyer orders. We applied the method to a test site and check its robustness. This test also showed the method gave the realistic models. Finally, we applied the method to the estimation of urban seismic damage and discussed the usefulness by comparing the result with the one by a conventional method.