EFFECT OF AGING ON NATURAL FREQUENCY OF KURAZUKURI BUILDINGS

This study carried out microtremor measurements at the Kawagoe City Former Harada Residence Misegura and the Kawagoe City Kurazukuri Museum Misegura, both Kurazukuri buildings located within the Kawagoe Traditional Buildings Preservation District in Kawagoe City, to understand the impact of aging over a decade on the natural frequency of Kurazukuri buildings. The measurements revealed that the natural vibration frequency of the Kurazukuri buildings had decreased. The factors that contributed to this were investigated, including the effects of earthquakes, seasonal changes, and aging, and it was suggested that the natural frequency had decreased due to decay associated with aging.