A STUDY ON ENERGY DISSIPATING BEHAVIORS AND RESPONSEPREDICTION OF RC STRUCTURES WITH VISCOUS DAMPERSSUBJECTED TO EARTHQUAKES

摘要

In the concept of performance based earthquake resistant design, appropriate evaluation of seismicdemand and capacity of structures is important, and simple procedures for response prediction arerequired. In this study, energy dissipating behaviors of reinforced concrete structures with viscousdampers subjected to earthquakes, are investigated, and based on these results, a procedure to predictinelastic response displacement by equalizing dissipated damping and hysteretic energy of structures toearthquake input energy is proposed.Seismic resisting capacity of viscous damper that is effective device to control earthquake response ofbuildings passively, is evaluated by damping force and dissipated damping energy, and then appropriateestimation of response velocity is required. In the first part of this paper, properties of response velocity ofSDOF (single degree of freedom) system with viscous damper subjected to earthquakes, is investigated.And the concept and examples of a procedure to predict the inelastic response displacement of structuresare shown.