This paper is concerned with the control of the harmful vertical vibration occurring on a cable-stayed bridge, a type of large structure bridges. For the control, we designed a model structure of the bridge and a shear type MR damper. With those, vibr...
This paper is concerned with the control of the harmful vertical vibration occurring on a cable-stayed bridge, a type of large structure bridges. For the control, we designed a model structure of the bridge and a shear type MR damper. With those, vibration control experiments were performed and evaluated under various conditions: non-control, clipped-optimal control, and passive off and passive on the last two of which were added to evaluate the clipped-optimal control. As a result of the experiments, displacement and acceleration on the middle span were obtained, and from those were derived maximum displacement and maximum acceleration by which control performance was also evaluated. Additionally, each different voltage consumed at the moment of control was compared each other. Finally, it is proven that the clipped-optimal control method was functionally and economically effective in the case where such a semi-active control device as MR damper was employed in the control of a cable-stayed bridge.