A study on Elasto-Plastic Behavior of Tall Buildings Under Wind Loads in Hybrid Vibration Technique

The Hybrid vibration technique, which was proposed by Dr. Kanda, is combined a movable mechanical system with a personal computer for simulating the wind-induced vibration of structures in wind tunnel tests. Authors attempted to investigate the wind-induced response of scale models with various-type of elasto-plasticity by means of Hybrid vibration system. The results of wind tunnel tests shows as follows: (1) Hybrid vibration system can simulate wind-induced vibration of models with a elasto-plasticity or a non-linear elasticity, (2) the across-wind response of models with a hysteretic damper was always reduced, (3) the across-wind response of models with a non-linear elasticity was increased around the wind condition of just below the vortex-excitation and decreased in the vortex-excitation, (4) the along-wind response of models was not controlled, and was remarkably increased, when the mean response was in the second stiffness and (5) the event of which the response was increased and/or decreased is explained in a viewpoint of frequency domain.