JP3247616B2 - Warehouse floor structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure of a warehouse having a seismic isolation function that operates reliably even when a large load is applied and prevents collapse of the load.

[0002]

2. Description of the Related Art In general, luggage stored in a warehouse is placed on a pallet (dish) so that it can be easily taken in and out, and is stacked on a rack to store as much as possible. Stored.
For this reason, there is a concern that a collapse of the cargo may occur during a large earthquake or the like. Therefore, from the viewpoint of preventing the collapse of the cargo, it is considered that the floor of the warehouse is a floor having a seismic isolation function.

[0003] However, as a conventional seismic isolation floor, a seismic isolation floor applied to a computer room or the like is generally known, and this type of seismic isolation floor is mainly used for a computer due to shaking due to a traffic vibration or an earthquake. Has been developed from the perspective of preventing malfunctions and damage to the floor of warehouses where the loading load is extremely large and the wheel pressure during traveling of forklifts that frequently moves is high, and there are difficulties in terms of strength. There was a problem that it was not suitable. In addition, in general, the height of the seismic isolation device is high, so the floor height is increased, and not only is it not inevitable that the ceiling height will be sacrificed, but also it is difficult to handle the steps at the non-seismic isolation part There were challenges. Furthermore, many of them are equipped with ball bearings, laminated rubber, etc., and generally have a complicated structure, which makes installation not only troublesome, but also difficult to remove once installed. Was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a warehouse floor structure capable of reliably operating a seismic isolation function to prevent collapse of a load even when a large load is applied. The purpose is to provide.

[0005]

A floor structure of a warehouse according to the present invention comprises: laying a plurality of floor boards on an existing slab of a warehouse to form a new floor on the existing slab; A plurality of bearing bodies for supporting the floor plate are respectively installed between the floor plate and the floor plate, and a bottom surface portion is formed in a concave curved surface shape on a lower surface portion of the floor plate, and a peripheral portion thereof is formed into a wall surface shape continuous in a circular shape. Each of the formed saucers is provided. Then, on the bottom of the tray , the friction should be reduced as much as possible.
Then, an attenuating damper for reducing the lateral sway of the floor plate is provided around the support body between the support body and the peripheral edge of the tray , with the upper end portion of the support body abutting. .

[0006] The damping damper is formed in a coil shape to pivot about said bearing member, its lower end bearing of
It is fixed to the lower end and its upper end is
It is in contact with the periphery of the dish .

[0007] The damping damper lateral pressure and without a retractable bag shape by the peripheral edge of the pan and the scaffold
The part is squashed so that it can be gradually contracted .

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 of the Invention 1 to 5 show an embodiment of the present invention. In the drawings, reference numeral 1 denotes an existing slab of a warehouse made of reinforced concrete, and 2 denotes a laying on the existing slab 1, A floor plate 3 made of a PC plate or the like constituting a new floor A is provided between the existing slab 1 and each corner of the floor plate 2, and the existing slab 1 rolls during an earthquake. That supports the floor plate 2 so that the floor plate 2 is not transmitted to the floor plate 2, and reference numeral 4 denotes a support body 3 and a receiving tray to be described later.
5 are damping dampers which are respectively installed around the bearings 3 between the peripheral edge 5b of the slab 5 and dampen the roll of the floor plate 2 accompanying the roll of the existing slab 1.

The floor plate 2 is formed in a rectangular plate shape large enough to be easily transported by a forklift, and a receiving tray 5 supported by a support 3 is formed on the lower surface of each corner. The receiving tray 5 is formed in a circular shape and in a concave shape having a predetermined depth, and a peripheral edge portion 5b is formed in a substantially vertical wall shape continuous with the circular shape. The bottom surface 5a of the receiving tray 5 has a predetermined curvature and is formed in a concave curved surface, and a Teflon or the like is adhered to minimize friction with the support body 3 or a ball bearing. Is installed.

[0010] Adjacent floor plates 2 are joined to each other by a joint 6 provided at a contact portion between the floor plates 2,2. The joint 6 has a narrow central portion and widened portions 6a, 6a at both ends wider than the central portion, and is formed in a substantially drum-like shape in a plane. The metal fittings 6 are attached to the abutting portions between the floor plates 2 by engaging the widened portions 6a at both ends with dovetail grooves 2a formed at the edge portions of the adjacent floor plates 2, respectively. The joint 6 can be easily attached by pushing the widened portions 6a, 6a at both ends into the dovetail grooves 2a, 2a, and can be easily removed.

The support body 3 is formed into a truncated cone or truncated pyramid shape by casting or forging, or bending a steel plate or the like.
Contacting 5a . In addition, a base plate 3b is formed at the lower end of the support body 3 so as to be in contact with the upper surface of the existing slab 1. The base plate 3b and the existing slab 1 are not particularly fixed, and a friction material is provided between the base plate 3b and the existing slab 1. A certain amount of friction is generated by intervening. In addition, the bottom part 5a of the tray 5 is provided on the upper end part 3a of the support body 3.
Teflon or the like is adhered or a ball bearing is attached in order to reduce friction with the ball as much as possible (not shown).

[0012] damping damper 4 has a retractable diameter and height in the pan 5, and the lower end is smaller in diameter, to pivot about bearing body 3 becomes gradually large in the upper direction in a circular shape It is formed in a coil shape. The lower end of the damping damper 4 is fixed to the lower end of the support 3, and the upper end is
Is in contact with the peripheral edge portion 5b .

The damping damper 4 may be attached to each of the supports 3 supporting the floor plate 2, or may be attached to some of the supports 3, for example, the support 3 adjacent obliquely.

In such a configuration, since the bottom surface 5a of the tray 5 has a predetermined curvature and is formed into a concave curved surface, the floor plate 2 and the load placed on the floor plate 2 are formed. The vertical load due to the weight generates a horizontal restoring force of the floor plate 2, and even when the vertical load greatly varies, a horizontal restoring force proportional to the horizontal load can be obtained.

Further, the natural period of the floor panel 2 in the horizontal direction can be adjusted by changing the curvature of the contact surface 5a , so that the natural period at which the earthquake response acceleration is minimized can be set. Furthermore, the elasto-plastic capacity of the damping damper 4 can be freely adjusted by adjusting its material, diameter and the like.

Therefore, even if the existing slab 1 is shaken by the seismic force, the floor plate 2 is slightly shaken by being supported by the support body 3, and even if it is shaken, the floor plate 2 is promptly acted on by the damping damper 4. Since the load is attenuated, the collapse of the load can be prevented.

When a large seismic force having a longer-period component than expected is applied, the amount of horizontal movement tends to increase, but the upper end of the support 3 hits the peripheral edge 5b of the tray 5, Since the bearing body 3 slides on the existing slab 1 with a predetermined frictional force between the base plate 3a and the existing slab 1, the seismic force is absorbed, thereby preventing the seismic isolation function from being damaged.

Embodiment 2 of the Invention FIGS. 6 (a) and 6 (b) show an embodiment of the present invention, and the same parts as those shown in FIGS. 1 to 5 are denoted by the same reference numerals.

Reference numeral 7 denotes a shrinkable bag which is installed around the support body 3 and operates as a damping damper for attenuating the roll of the floor plate 2 caused by the roll of the existing slab 1 during traffic vibration or earthquake. The shrinkable bag 7 is formed by enclosing air or powder in a very durable bag. When the existing slab 1 shakes during a traffic vibration or an earthquake, the shrinkable bag 7 is crushed by the peripheral portion 5b of the tray 5 and the support 3 and gradually shrinks, whereby the floorboard 2 is shrunk.
Can be attenuated.

The shrinkable bag 7 is, like the damping damper 4, attached to each of the supports 3 supporting the floor plate 2 and a part of the supports 3, for example, a support adjacent to the oblique direction. 3 in some cases.

[0021]

The floor structure of a warehouse according to the present invention has the above-described structure. A plurality of floor boards are laid on an existing slab of a warehouse to form a new floor on the existing slab. A plurality of bearing bodies supporting the floor plate are respectively installed between the existing slab and the floor plate, and a lower surface portion of the floor plate is provided with a saucer having a concave bottom surface, respectively.
Since the upper end of the support is brought into contact with the bottom surface of the receiving tray, the seismic isolation function is reliably activated even when the load is large, so that the load can be prevented from collapsing.

[0022] In addition, der between the existing slab and the floor of the warehouse
That, around the scaffold, since the installed damping damper to reduce the lateral sway of the floor, even swinging though floorboards with the swing of the existing slab, shaking floorboards by the action of the damping damper promptly To be reduced.

By installing the support body and the damping damper so as to be accommodated in a tray formed on the lower surface of the floor plate, the floor height can be kept low, so that the ceiling height does not become low.

Further, since the parts such as the support body are not fixed to the existing slab, they can be easily installed on the existing slab, and can be easily removed especially when the seismic isolation function is not required. It is also possible to construct a seismic isolation floor on the existing slab with the required size on the existing slab.In addition, since parts such as bearings are not fixed to the existing slab, the allowable stroke increases, It can sufficiently cope with vibration having a long period component.

Since the damping damper is formed in a coil shape revolving around the supporting body and is installed around the supporting body, the shape is very simple and easy to manufacture, and the roll of the floorboard is surely prevented. Can be reduced.

Further, the damping damper is formed in a bag shape which can be contracted by the lateral pressure, and is installed around the support in the receiving tray, so that the structure is extremely simple and can be manufactured easily and inexpensively. Rolling can be reliably reduced.

[Brief description of the drawings]

FIG. 1A is a partial plan view of a floor structure of a warehouse showing an embodiment of the present invention, and FIG. 1B is a sectional view taken along the line II-II in FIG.

FIG. 2 is a sectional view taken along the line II-II in FIG. 1 (a) of the floor structure of the warehouse showing one embodiment of the present invention.

3 (a) is a partial plan view of a floor structure of a warehouse showing one embodiment of the present invention, and FIG. 3 (b) is a cross-sectional view taken along a roll line in FIG. 3 (a).

FIG. 4 is a diagram showing an operation state of the floor structure of the warehouse shown in FIG. 3;
It is a sectional view taken along the roll line in FIG.

5 (a) is a partial plan view showing a joint between floor plates, FIG. 5 (b) is a cross-sectional view taken along the line C-A of FIG. 5 (a), and FIG. 5 (c) is a partial perspective view thereof.

6 (a) is a sectional view taken along the line II in FIG. 1 (a) showing a floor structure of a warehouse showing one embodiment of the present invention, and FIG. 6 (b) is a partial plan view thereof.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Existing slab of a warehouse, 2 ... Floor plate, 3 ... Bearing, 4 ... Damping damper, 5 ... Receiving tray, 6 ... Joint fitting, 7 ... Shrinkable bag (damping damper), A ... Floor.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeru Yoshigai 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Takahiro Nakajima 1-2-7 Moto-Akasaka, Minato-ku, Tokyo No. Kashima Construction Co., Ltd. (72) Inventor Kenichi Yano 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (56) References JP-A-4-107339 (JP, A) 3-118336 (JP, U) Japanese Utility Model 1-83801 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04F 15/18 601 E04F 15/00 101 E04F 15/024 E04B 1/36 E04B 5/43 F16F 15/04

Claims (3)

(57) [Claims] 1. A plurality of floor boards are laid on an existing slab in a warehouse to form a new floor on the existing slab, and a plurality of floor boards are supported between the existing slab and the floor board. Are respectively provided on the lower surface of the floor plate, and a tray having a bottom surface formed in a concave curved shape and a peripheral portion formed in a continuous wall shape is provided. To reduce friction as much as possible
Te, made by abutting the upper end of the bearing member together with the
A floor structure for a warehouse, wherein a damping damper for reducing the lateral sway of the floor plate is provided around the bearing body between the bearing body and the peripheral edge of the tray . 2. The damper according to claim 1 , wherein said damper is provided around said bearing.
And the lower end of the coil is
And is fixed to the lower end of the
Warehouse floor structure as in claim 1 wherein the only characterized that you have contact with the periphery of the dish. Wherein the damping damper lateral pressure and without a retractable bag shape by, periphery of the pan and the scaffold
So that it can be crushed by the edges and shrink gradually
To have floor structure warehouse as in claim 1, wherein said Rukoto.