VIBRATION CONTROLLING METHOD FOR STRUCTURE

PROBLEM TO BE SOLVED: To use various kinds of viscoelastic bodies with different kinematical characteristics to reduce vibration by making it possible to freely set amplitude operating quantity of a vibration control mechanism. SOLUTION: A pair of first bearing 11 and second bearing 13 are mounted to opposed framed members 2 at a proper interval, a fist plate 12 mounted to the first bearing 11 in a rotatable manner is opposed to a second plate 14 mounted to the second bearing 13 in a rotatable manner at a proper space, a viscoelastic body M is held in the space to form a vibration control mechanism 10, two or more kinds of viscoelastic bodies M with different kinematical characteristics are used for one vibration control mechanism 10, or two or more vibration control mechanisms 10 are installed to use two or more kinds of viscoelastic bodies M with different kinematical characteristics. Modulus of conversion B=L/h as ratio of distance L between the first bearing 11 and second bearing 13 and distance (h) between a pair of bearings 11 and 13 is selected in accordance with kinematical characteristics of viscoelastic bodies M.