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Abstract ▼ AI-Helper

In Recent, researches for the earthquake-resistant performance of Korean wooden house are insufficient, although earthquake occurrences are steadily increased in Korea. The primary purpose of this research is to find out dynamic characteristics such as natural frequency and damping factor of Korean ...

In Recent, researches for the earthquake-resistant performance of Korean wooden house are insufficient, although earthquake occurrences are steadily increased in Korea. The primary purpose of this research is to find out dynamic characteristics such as natural frequency and damping factor of Korean wooden house. To evaluate the dynamic characteristics, micro tremor measurements are performed for 24 sites. And for each site, the natural frequency is determined by Fast Fourier Transform analysis, and damping factor is analyzed by synchronized human excitation. From the test results, the damping factor was measured less than 5%, and primary natural frequency of 24 sites were ranged from 1.9 Hz to 7.45 Hz due to the period of house use, the types of construction method, structural changes and so on. And natural frequency is affected by plan type, and plan aspect ratio. Using regression analysis with 24 houses, the natural period equation regarding to the height is suggested.

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