2025 Volume 31 Issue 77 Pages 205-210
To understand the vibration characteristics of traditional wooden houses in Okinawa Prefecture, ambient vibration measurements were conducted to determine their natural frequencies. Six traditional wooden houses, designated as cultural properties, were selected for the study. The results showed that the natural frequencies of Okinawan traditional wooden houses were around 2.5 Hz. In houses showing deterioration, the frequencies were about 30% lower than the average. Compared to houses in other prefectures, Okinawa’s traditional wooden houses were found to have lower frequency ranges.
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