STUDY ON FATIGUE BEHAVIOR OF TIMBER STRUCTURES SUBJECTED TO REPEATED EARTHQUAKE MOTIONS (PART 3) : PERFORMANCE EVALUATION OF TIMBER SHEAR WALL STRUCTURES CONSIDERING CUMULATIVE DAMAGE BY MULTIPLE EARTHQUAKES

Abstract

The authors have proposed hysteresis model for timber shear walls considering the strength reduction by repeated cyclic loading. In this paper, the deterioration behavior is related to the characteristics of earthquake motions, and spectral method to predict maximum earthquake response is proposed. The accuracy is confirmed by comparison with numerical analyses. Finally, the index of seismic performance maintenance is proposed. The tendency of the exact solution obtained by time history analysis is discussed, and calculation method of the approximated solution is also presented.