不在家屋を含む伝統構法木造建築物の微動計測による構造調査研究

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In this paper, microtremor measurements and on-the-spot investigations of anti-seismic efficiency are carried out at the traditional wooden housings including unoccupied houses located in Imai-Cho, Kashihara-City, Nara, Japan, one of a town built and prospered originally around a temple. This town, Imai-Cho has a lot of traditional wooden structures historically precious, most of those structures have been constructed since 18 or 19 century. Many structures in Imai-Cho are repaired and investigated to preserve to the next ages, on this purpose, in 1993, Imai-Cho has been specified as designated area of the important "Traditional Architectures Preservation District" in Japan. On the other hand of those conserving business, a lot of unoccupied houses are increasing in this area, and those houses are left to become their aging damages without repairs. In this study, to make assure structural properties for anti-seismic efficiencies, building weights and floor sizes, constructing year, natural periods and latent aseismic strength are investigated for various types of wooden houses in this town. Thorough those evaluations, it is found that natural periods in most of structures in this area could be indicated to the explicit interrelations with structural volumes or building ages.
2010-03-27