JPH10236617A - Seismic control structure of rack warehouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the seismic control of a rack or a group of racks by utilizing tensile force and compressive force acting on the rack or the group of racks. SOLUTION: A seismic control structure of rack warehouse is structure so that it is provided with a rack 20 or a group of racks 10 which comprise a cargo access port 12 and three shaft parts 14, 16, and 18 arranged so that they enclose those loads guided through the access port and provide strength and rigidity and which can stack cargoes in vertical direction. In this case, it is provided with a brace damping device 24 which is mounted on at least one of three shaft parts of the rack or the group of racks.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration control structure of a rack warehouse, and more particularly, to a vibration control structure of a rack warehouse having a plurality of racks or a plurality of rack groups formed by a steel frame.

[0002]

2. Description of the Related Art As a vibration control structure of a rack warehouse, in a building comprising a plurality of tower-like structures and beam members interconnecting the upper portions of the tower-like structures, the tower-like structures and the beam members are connected to each other. A damper and a shear pin are arranged at the connecting part (Japanese Patent Publication No. 6-15975). In a three-dimensional automatic warehouse with a gate-shaped cross section across a stacker passage, at the truss intersection near the center of the upper horizontal beam There is one incorporating a vibration damping device using low-yield steel (Japanese Patent Laid-Open No. 5-286514).

[0003]

In any case, the shear pin and the vibration damping device can be operated mainly by the horizontal force acting on the rack or the upper part of the rack group at the time of the earthquake to obtain the vibration damping effect. However, the force acting on the rack or racks due to the earthquake includes not only horizontal force but also tensile force and compressive force,
In the vibration control structure, it is difficult to effectively use such a tensile force and a compressive force.

[0004] The present invention provides a vibration control structure of a rack warehouse, which can control the rack or the group of racks by using the tensile force or the compressive force acting on the rack or the group of racks.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a vibration control structure of a rack warehouse which includes a plurality of racks or a plurality of rack groups formed by a steel frame, and stores luggage, wherein the luggage access port is provided. And a brace vibration control device attached to the frame of the rack or the group of racks.

[0006]

[Operation and Effect] When an earthquake occurs, a horizontal force acts on the rack or racks. This gives the frame a pulling force, a compressive force,
Bending force is applied. The brace vibration control device operates mainly by tensile, compressive, and bending forces applied to the frame, and absorbs seismic force.

[0007] By attaching the brace damping device to the frame of the rack or the group of racks, the entire rack or group of racks can be damped, and a high damping effect can be obtained.
Further, by using the brace vibration damping device, it is possible to reduce the cross section of the members constituting the framework of the rack or the rack group.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rack or a group of racks is made of a steel frame and has a load entrance. A framework arranged so as to surround the luggage guided through the access port provides strength and rigidity. Since the rack or the group of racks is generally formed such that the entire planar shape including the load / unload port is rectangular or square, it is arranged to surround the load guided through the load / load port. The skeleton is located on three sides of a rectangle or a square. Here, a rack or a group of racks refers to one rack when one rack is independent, and a group of racks when a plurality of racks are interconnected to form one group. Means The rack or rack group preferably has such strength and rigidity that the rack or rack group itself forms a warehouse. The rack or group of racks can store the luggage stacked vertically.

[0009] Generally, a three-sided frame excluding a rack or a group of racks for loading and unloading the luggage is provided with a plurality of frames of high strength and high rigidity steel material which are vertically arranged in a columnar shape, and these frames are formed by horizontal members. Are formed by being interconnected. Therefore, the brace vibration damping device is braced and spanned over a plurality of frames and fixed to the frames. The brace vibration damping device is attached to at least one of the frames located on three sides, but when the length of the rack or rack group is long, it can be arranged in several stages in the vertical direction. In that case, the brace vibration control devices adjacent to each other in the vertical direction are arranged so as to extend in the direction in which the braces cross. The brace vibration damping device can be formed by two plate members and a viscoelastic damper made of a plate member and a rubber plate attached between the ends of these plate members. A hydraulic damper may be used in place of the viscoelastic damper.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1 showing a rack warehouse in a frontal state and FIG. 2 showing a rack warehouse in a plan view, a rack group 10 to be subjected to a vibration control structure of a rack warehouse has a loading / unloading opening 12 and a loading / unloading opening 12. Are arranged so as to surround the luggage guided through, and provide a three-sided framework 14, 16,
18 In the illustrated embodiment, four or five racks 20 are interconnected to form a rack group 10. The rack group 10 can stack loads vertically. As is known per se, the group of racks 10 is arranged such that the loading / unloading port 12 faces the passage 22 through which the stacker runs, and a number of such rack groups 10 are arranged in a warehouse.

[0011] Frames 14, 16, 1 on three sides of the rack group 10
Brace damper 2 on at least one of the frames 8
4 is attached. 1 and 2, the brace vibration control device 24 is painted black for convenience of explanation. When a large number of racks 20 are connected to each other, the brace vibration damping device 24 is one for each of a group of four or five racks.
One brace damper 24 can be arranged to come.

In the embodiment shown in FIGS. 3 and 4, the brace vibration control device 24 comprises a vibration control damper 26 and two plate members 28. The vibration damper 26 includes two plate members 30 and the viscoelastic plate 3 bonded to both side surfaces of the end of each plate member 30.
2 and two plate members 34 bonded to the viscoelastic plate 32 so as to sandwich the viscoelastic plate 32. Plates 28, 30, 3
4 can be formed by a steel plate, and the viscoelastic plate 32 can be formed by a rubber plate. The plate 28 and the plate 30 are connected by bolting or riveting with two joint plates 36 applied thereto. The two plate members 28 are arranged obliquely, and the entire brace vibration damping device 24 is braced, and is welded, bolted, or riveted to a frame 38 (FIG. 1) provided on a rack or a frame of a group of racks. Instead of the two plate members 28, two hollow or solid bar members can be used.

As shown in FIG. 1, the brace vibration control devices 24 can be arranged in a plurality of stages in the vertical direction of the rack 20 or the group of racks 10. In this case, it is preferable to arrange the brace vibration damping devices 24 adjacent to each other in the vertical direction so as to cross each other, and to arrange the brace vibration damping devices 24 adjacent to each other in the horizontal direction so as to be opposite to each other. .

[Brief description of the drawings]

FIG. 1 is a front view showing an end face of an embodiment of a vibration control structure of a rack warehouse according to the present invention.

FIG. 2 is a plan view of the vibration control structure of the rack warehouse according to the present invention.

FIG. 3 is a perspective view of a vibration damper of the brace vibration control device.

FIG. 4 is a side view of the brace vibration control device.

[Explanation of symbols]

 10 rack group 12 luggage doorway 14, 16, 18 frame 20 rack 24 brace vibration control device

Claims (1)

[Claims] 1. A seismic control structure for a rack warehouse that includes a plurality of racks or a plurality of rack groups formed by a steel frame and stores luggage, wherein the rack or the group of racks excluding an entrance of the luggage is provided. The vibration control structure of the rack warehouse equipped with the brace vibration control device attached to the frame.