DEVELOPMENT OF DATABASE ON DYNAMIC PROPERTIES OF HISTORICAL MODERN ARCHITECTURES IN MEIJI-MURA BASED ON MICROTREMOR OBSERVATION

Abstract

Dynamic properties evaluation by microtremor observation was conducted for valuable modern historical buildings in the architectural museum “Meiji mura”. The estimated natural frequency and damping ratio of all the buildings are accumulated into database together with the structural and historical features of the building. Surface layer characteristics are examined at many points in the museum, and the area of filled ground is clearly shown. The earthquake observation is also conducted at three important buildings. Such observation and database are important for planning seismic retrofit of these buildings.