実物大建物振動台実験に基づく木造軸組工法住宅の耐震性能に関する研究

概要

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To establish the structural design method which can estimate a seismic performance accurately, shaking table tests were made for wood-framed residential structures using full-scale model. A total floor area of the model was 125.9m^2. The Ground acceleration with 1000gals seismic motion was applied. The motion was amplified from the JMA-kobe (NS) which was recorded in the 1995 Hyogoken-nanbu earthquake. The motion were applied three times. However, no critical damage was found. It was made clear that the model was strong enough. The maximum response acceleration was recorded as much as 2095gals on the 2nd floor and 3374gals on the roof in the excitation of 1000gals of JMA-kobe. It was found that the maximum storey shear was recorded by 322kN, that is equivalent to 1.8 in base shear coefficient. It was made clear that the model has high ductile performance. The maximum storey shear of the model was 3 times as much as estimated value. Also the proportion of the shear wall was equal to or less than 1/2 of the total storey shear, and the non-structural secondary walls contribute mainly to the seismic performance.
2006-01-30