Maxwell型非線形粘性ダンパーを有する構造物の最適地震応答制御について

抄録

A new mathematical model of the Maxwell-type non-linear viscous damping characteristics is presented. Using this model, the response of a single-degree-of-freedom system with the non-1inear viscous damping characteristics subjected to a typical strong earthquake excitation is examined by time-history response analysis. Numerical examples are presented and the accuracy of the model is demonstrated through the input-output energy balance. An application of the model to estimation of the optimum parameters of the non-linear viscous damper for mitigating seismic response is discussed for m.d.o.f. structural systems on the basis of random earthquake response analysis. From two viewpoints of preserving seismic safety and improving structural comfortability, the optimum damper parameters are determined; i.e., the systems suffer no damage under medium earthquake excitations, while the systems suffer only minor recoverable damage under severe earthquake excitations.