PARETO FRONT OF DEMAND SPECTRA NORMALIZED BY GROUND MOTION FOR SINUSOIDAL RESPONSES OF SDOF SYSTEMS

Abstract

Nowadays, structural design of buildings considers large earthquakes such as long-period long-duration ground motions. Generally, design criteria are not enlarged as increasing intensities of input ground motions. Practical and theoretical limitations to control seismic responses are unknown. Expected seismic responses of structures and required aseismic performances for the structures under an earthquake can be drawn as a demand spectrum. This paper presents a normalized demand spectrum to investigate sinusoidal responses of SDOF systems. Pareto front of the demand spectra considering a trade-off between displacement response and acceleration response is also presented.