Abstract
The main objective of this study is to disclose a variation of aseismic performance of wooden house against successive earthquakes accompanying the increase of the number of oscillations. The effect of seismic reinforcement using oil damper connection to independent structure on improvement of aseismic performance against successive earthquakes is also considered. Especially, by predicting the maximum displacement based on energy balance, the variation of aseismic performance and the effect of connected vibration control as seismic reinforcement is evaluated. Assuming that energy dissipation by wooden house in the second earthquake is equal to that in the first earthquake when the earthquake of the same magnitude acts successively twice on the wooden house modeled in a shear mass point system with single degree of freedom, the maximum displacement due to the second earthquake can be expressed as a function of the maximum displacement due to the first earthquake. By comparing the maximum displacement obtained from this prediction method and that from time history response analysis, the validity of the maximum response prediction of wooden house against successive earthquakes based on energy balance is presented. It is also shown that the connected vibration control in wooden house is effective against successive earthquakes.
