| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide the seismic control structure of a rack shelf capable of controlling preferably earthquake motions.SOLUTION: In a rack shelf 3, a plurality of a pair of racks 9 which is connected by a beam 15 across a space 5 where a stacker crane travels. A seismic control structure 2 is arranged between the juxtaposed racks 9, in a space 6 between a pair of juxtaposed racks 9, such that both ends of a vibration control damper 17 are provided in the oblique direction in a vertical plane. The vibration control damper 17 is disposed over a plurality of stages downwardly from the top of the rack 9 such that the bending and shear deformation of the rack 9 is converted to the deformation in an axial direction during the time of shaking occurrence due to an earthquake and the like, so as to absorb and attenuate the shaking.</p> |
