在来構法既存木造住宅の静的水平力載荷実験による耐震性能評価

Abstract

This paper presents earthquake-resisting capacity and failure process of existing conventional wood houses, based on the static horizontal loading tests. Four two-story houses and one wood framework were tested. When the house was loaded in the longitudinal direction, the maximum base shear against its own weight is between 0.43 and 0.54, which is larger than one needed from the regulated wall area index. From the test results, the houses keep their load-bearing capacities while their story deformation angle is between 1/60 rad and 1/20 rad (on the average about 1/30 rad). Natural frequency of the houses is ranged 3.0-4.7 Hz in longitudinal direction and 2.4-4.0 Hz in span direction. It is suggested that, in order to estimate the exact load-carrying capacities, the consideration should be required on the contribution of non-structural elements to the wall area index.