JPH1162195A - Peripheral movable structure of vibration-isolated free access floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate level differences resulting from the thickness and provide a flexibility against the vertical vibration, by constituting the structure with a vibration isolation panel at the central part supported by a vibration isolation device, border panels at the periphery, and a freely sliding panel closing the vibration isolation gap between both panels. SOLUTION: A slide panel 6 is constituted with the same structure with a panel 2 in the vibration isolation part. A front metal fitting 10 having an inclined face appropriate for transfer of the wheels of a truck or the like is integrally fitted to the front edge staying in contact with a border panel 5 in the slide panel 6. And a hook-shaped metal fitting supported by a receive metal plate erected nearly vertically on a vibration isolation column 8 supported by a vibration isolation device 1, is provided at the rear edge coming into contact with the vibration isolation panel 2. The slide panel 6 is supported in a little loose hitched condition on a bracket that the rear metal fitting of the rear edge is erected on the support column 8 of the vibration isolation part, and the front metal fitting 10 of the front edge is mounted on the border panel 5 face to freely slide.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a free access floor assembled on a floor slab of a building, particularly a seismic isolation free access floor having a seismic isolation mechanism, and a central portion supported by a seismic isolation device. Of a seismic isolation free access floor composed of a base isolation panel, a border panel at the periphery fixed to the building frame, and a slide panel that slidably closes a seismic isolation gap between the panels. Peripheral movable structure.

[0002]

2. Description of the Related Art Conventionally, on a seismic isolation free access floor, a seismic isolation panel at a central portion supported by a seismic isolation device, a border panel at a peripheral portion fixed to a building frame, and a space between the panels. There are various known peripheral movable structures including a slide panel that slidably closes the seismic isolation gap. For example, JP-A-5-287890, JP-A-5-28789
No. 1 and Japanese Patent Application Laid-Open No. Hei 5-287892 disclose a movable structure at the periphery of a seismic isolation free access floor, which includes a seismic isolation panel at a central portion supported by a seismic isolation device and a peripheral portion fixed to a building frame. And the border panel are facing each other at approximately the same height with a seismic isolation gap on the surface of the flat support member, and the facing edges of both panels are inclined downward toward the tip. And a level panel having a reverse inclined surface parallel to the inclined surface is installed so as to close the seismic isolation gap. JP-A-5-79172, JP-A-5-79173
The movable structure around the seismic isolation free access floor described in Japanese Unexamined Patent Publication No. 5-32572 is a seismic isolation panel in the center supported by the seismic isolation device and the peripheral part fixed to the building frame. And a slide panel that slidably closes the seismic isolation gap between the two panels, and a front surface of the slide panel has an inclined surface having an inclination angle suitable for transfer of wheels such as a bogie. Are formed.

[0003]

The movable structure at the periphery of the above seismic isolation free access floor is reasonable at first glance. However, when a strong earthquake occurs, the level panel is repelled by the wedge action of the inclined surfaces on both sides thereof. There is a danger of flying, hitting nearby objects and damaging them, and the recovery work is troublesome.

[0004] In the above-mentioned movable structure around the seismic isolation free access floor, the slide panel is completely different from the structural form and the dimensional specification of the seismic isolation panel and the border panel. Weak to rolling. Also, those made of thin aluminum plate etc.
The strength is lower than the other panel parts, and there is a problem in that a heavy object is inadvertently placed during operation or damaged or deformed by a strong earthquake. In particular, earthquakes involve not only horizontal vibrations but also vertical vibrations.However, conventional slide panels have a rigid structure where the rear edge in contact with the seismic isolation panel is fixed tightly, making them flexible against vertical vibrations. Has the disadvantage that it is easily broken.

Accordingly, it is an object of the present invention to provide a movable structure around a seismic isolation free access floor using a slide panel having the same structure as the seismic isolation panel. A second object of the present invention is to provide a movable structure at the periphery of a seismic isolation free access floor using a slide panel which is free from vertical vibration.

A further object of the present invention is to use a level panel which eliminates a step caused by the thickness of a slide panel, but which has a high structural stability even in the event of a strong earthquake. It is to provide a movable structure.

[0007]

According to a first aspect of the present invention, there is provided a seismic isolation free access floor having a movable portion around a central portion supported by a seismic isolation device. Around a base-isolated free access floor composed of a base-isolated part panel, a border part panel at a peripheral part fixed to the building frame, and a slide panel slidably closing a seismic-isolation gap between the two panels. In the movable part, the slide panel is formed in the same structure as the seismic isolation panel, and in the slide panel, a front edge in contact with the border panel has an inclination angle suitable for transfer of wheels such as a bogie. The front bracket with the inclined surface is integrally attached, and the rear edge that comes in contact with the seismic isolation panel is a plate that stands substantially vertically on the seismic isolation column supported by the seismic isolation device. The rear panel on the rear edge of the slide panel has a slightly loose latch on the bracket that stands on the seismic isolation column. It is characterized in that the front metal fitting of the front edge is supported and slidably mounted on the surface of the border panel.

According to a second aspect of the present invention, the seismic isolation panel according to the first aspect has a hollow structure or a hollow portion composed of a flat upper steel plate and a back plate having a projecting portion projecting upward on the back surface thereof. The slide panel has a hollow structure or a hollow structure in which the basic structure of the slide panel is composed of a flat top steel plate and a back plate with a protruding portion that projects upward on the back surface. It is characterized by having a filled structure.

According to a third aspect of the present invention, there is provided a level plate on the surface of the border panel according to the first aspect, the level plate having a size which does not interfere with the front bracket of the slide panel in a normal position and which has substantially the same thickness as the slide panel. And an inclined bracket having an inverted inclined surface substantially parallel to the inclined surface of the front bracket is integrally attached to an edge of the level plate that contacts the slide plate. .

According to a fourth aspect of the present invention, in the slide panel according to any one of the first to third aspects, a contact portion of the front end of the front bracket with the border panel is at the same level as the lower surface of the slide panel. The rear bracket is characterized in that the lower surface of the slide panel is supported slightly higher than the horizontal position by a metal fitting of the seismic isolation section column.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The movable structure around the seismic isolation free access floor according to the first aspect of the present invention is shown in FIG.
As shown in the figure, a seismic isolation panel 2 at the center supported by the seismic isolation device 1, a border panel 5 at the periphery fixed to the building frame (floor slab 3 and side walls 4), and both panels And a slide panel 6 that slidably closes the seismic isolation gap S between the two. Seismic isolation panel 2
Steel frame 7 supported by seismic isolation device 1 installed on floor slab 3
The seismic isolation section support 8 is vertically fixed on the base, and is horizontally laid on the seismic isolation section support 8 so as to be spread. The border panel 5 is installed on a border support 9 that is directly fixed on the floor slab 3.

Although the detailed structure of the slide panel 6 is not shown in the drawings, as described in, for example, Japanese Utility Model Publication No. 6-49731, a flat upper steel plate a
And a back plate c having a large number of dome-shaped projections b as protruding portions projecting upward, which is common to the seismic isolation panel 2 and the border panel 5 in the form of a metal structure. Each panel also has a hollow structure in which only a dome-shaped projection is interposed between the upper steel plate and the back plate, and a structure in which the hollow portion is filled with a filler such as a soundproofing material or a heat insulating material. Similarly, in FIG. 1, the thickness of the panel is the same as the seismic isolation panel 2 and the border panel 5 in terms of the plane shape and the vertical and horizontal dimensions, respectively, as is evident in FIG. The joints pass through because they are configured with the dimensional specifications. Therefore, the slide panel 6 has basically the same strength and rigidity as the seismic isolation panel 2 and the border panel 5.

As shown in detail in FIG. 2, the front edge of the slide panel 6 in contact with the border panel 5 has an inclined surface having an inclination angle (for example, 22 °) suitable for the transfer of wheels such as a bogie. A metal front fitting 10 having 10a is integrally attached by screwing and welding. This front metal fitting 10 is a bent product of an iron plate. The contact portion 10b of the front end portion of the front metal fitting 10 with the border panel 5 is configured to be at the same level as the lower surface 6a of the slide panel 6, and the bottom wall 10
c is slightly raised and welded to the front edge of the seismic isolation panel 2 so that the slide panel 6 is placed well on the border panel 5 to prevent rattling and generate unnecessary slip resistance. Is preventing. The rear edge where the slide panel 6 is in contact with the seismic isolation panel 2 has a plate-like shape that stands substantially vertically on the seismic isolation column 8 supported by the seismic isolation device, as shown in detail in FIG. A hook-shaped rear fitting 12 supported by the receiving hardware 11 is attached by means of welding and screwing. The rear bracket 12 is also a bent product of an iron plate. FIG. 4 shows a part of the bottom surface of the slide panel 6 having the above configuration. The front metal fitting 10 and the rear metal fitting 12 are provided so as to extend over substantially the entire length of the front edge and the rear edge of the slide panel 6. In short, the slide panel 6 is a ready-made seismic isolation panel 2
By using the border panel 5 and attaching the front fitting 10 and the rear fitting 12 to the front edge and the rear edge thereof, it is relatively easily prepared and used.

As shown in FIG. 3, the slide panel 6 has a rear metal fitting 12 at the rear edge thereof supported in a slightly loosely latched state on a metal fitting 11 which stands on a base plate 8a of the seismic isolation part column 8 as shown in FIG. The front metal fitting 10 of the front edge is slidably mounted on the surface of the border panel 5. Therefore, the slide panel 6 is in an installed state in which the slide panel 6 can be freely moved not only for horizontal vibration but also for vertical vibration. The receiving hardware 11 is installed on the front half of the base plate 8a of the seismic isolation support column 8. On the other half of the base plate 8a, a receiving hardware is also attached, and one of the four corners of the seismic isolation panel 2 is mounted. One (corner) is erected. In this case, in order to prevent the metal seismic isolation panel 2 and the edge of the slide panel 6 from directly rubbing against each other and generating a metallic squeak sound (noise), the entire length of the rear edge of the slide panel 6 is buffered. Rubber sheet 15 is provided (FIG. 3).

The rear bracket 12 supports the lower surface 6a of the slide panel 6 slightly higher than the horizontal position by the receiving hardware 11 of the seismic isolator supporting column 8, so that the slide panel 6 is supported.
Is set to be slightly inclined downward from the rear edge to the front edge, and is configured to be slippery. The receiving hardware 11 of the seismic isolation support column 8 is installed so as to span the span of the adjacent seismic isolation support column 8.

FIG. 5 is a plan view of an embodiment in which the slide panel 6 is installed in two directions at right angles. FIG. 6 shows an embodiment in which a front bracket 10 is attached to two right sides of one slide panel 6. In this case, at one corner in the diagonal direction, there is provided a rear bracket 12 having a size occupying one-fourth of the planar shape (square) of the seismic isolation part support column 8 and having two right-angled sides. . The metal fittings 11 that stand on the base plate 8a of the seismic isolation section column 8 naturally have the same shape and the same size.

Next, in the embodiment of the present invention, the front bracket 10 of the slide panel 6 is located at the normal position on the surface of the border panel 5, as also indicated by the dotted line in FIG. When the slide panel 6 is mounted, a level plate 13 having a size and a shape that does not interfere with the front bracket 10 and a thickness substantially equal to that of the slide panel 6 is placed. As shown in detail in FIG. 7, the edge of the level plate 13 in contact with the slide plate 6 is provided with the front bracket 1.
An inclined bracket 14 having an inverted inclined surface substantially parallel to the 0 inclined surface 10a, that is, equivalent to using the front bracket 10 upside down, is integrally attached by means of screws and welding. Therefore, in normal times, the slide plate 6 and the level plate 13 form the same plane surface without any step by completely overlapping the inclined surfaces of the front bracket 10 and the inclined brackets 14 of the level plate 13, This configuration is convenient for walking humans, moving carts, and placing instruments. Even if horizontal vibrations are caused by an earthquake, the outer ends are restricted by the side wall 4 and the level plate 13 is not moved.
Absorbs vibrations as it moves underneath. The level plate 13 is prepared and used relatively easily by a process of attaching the inclined metal fitting 14 to one end of the seismic isolation panel 2 or the border panel 5 which is a pre-made product.

[0018]

According to the movable structure of the periphery of the seismic isolation free access floor according to the present invention, the structure and strength of the existing seismic isolation panel are sufficiently large, and the strength and rigidity are sufficiently large. Because of the movable structure around the seismic isolation free access floor using easy sliding panels, it can be damaged by strong earthquakes or by placing heavy objects like other seismic isolation panels. There is no worry about dripping or deformation.

In addition, since the peripheral portion has a movable structure with a slide panel which has flexibility not only for horizontal vibration but also for vertical vibration, the function of the seismic isolation free access floor is sufficiently exhibited. The movable structure at the periphery of the seismic isolation free access floor according to the present invention also uses a level panel that eliminates steps caused by the thickness of the slide panel, but has a high structural stability even under a strong earthquake. A movable structure around the free access floor can be provided.

[Brief description of the drawings]

FIG. 1 is an elevational view showing a movable structure around a seismic isolation free access floor according to the present invention.

FIG. 2 is a side view showing a front edge side of the slide panel.

FIG. 3 is a side view showing a rear edge side of the slide panel.

FIG. 4 is a bottom view of about half of the slide panel.

FIG. 5 is a plan view showing a usage example of the slide panel.

FIG. 6 is a bottom view showing another embodiment of the slide panel.

FIG. 7 is a detailed view of a contact portion between a slide panel and a level plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seismic isolation device 2 Seismic isolation part panel 3 Floor slab (building skeleton) 4 Side wall (building skeleton) 5 Border part panel 6 Slide panel S Gap for seismic isolation 10a Inclined surface 10 Front bracket 8 Seismic isolation support strut 11 Metal fitting 12 Rear Bracket 13 Level plate 14 Incline bracket

Claims (4)

[Claims] 1. A seismic isolation panel at a central portion supported by a seismic isolation device, a border panel at a peripheral portion fixed to a building frame, and a seismic isolation gap between the two panels slidably closed. In the movable structure at the periphery of the seismic isolation free access floor configured by a sliding panel, the slide panel is configured in the same structure as the seismic isolation panel, and the slide panel contacts the border panel. A front bracket having an inclined surface with an inclination angle suitable for the transfer of wheels such as a bogie is integrally attached to the front edge, and a rear edge in contact with the seismic isolation panel is provided with a seismic isolation column supported by the seismic isolation device. A hook-shaped rear bracket supported by a plate-shaped bracket that stands substantially vertically on the top is provided. The rear panel at the rear edge of the slide panel has a seismic isolation support column. Seismic isolation free, characterized in that it is slightly loosely supported on a metal fitting that stands on the front, and the front edge of the front edge is slidably mounted on the surface of the border panel. A movable structure around the access floor. 2. The seismic isolation panel has a hollow structure composed of a flat upper steel plate and a rear plate having a projection projecting upward from the rear surface thereof, or a structure in which a filler is filled in the hollow portion, and is provided with a slide. The panel is characterized in that its basic configuration is a hollow structure composed of a flat top steel plate and a back plate having a protruding portion protruding upward on its back surface or a structure filled with filler in the hollow portion, The movable structure around the seismic isolation free access floor according to claim 1. 3. A size which does not interfere with the front bracket of the slide panel in a normal position on the surface of the border panel,
A level plate having substantially the same thickness as the slide panel is placed, and an inclined bracket having an inversely inclined surface substantially parallel to the inclined surface of the front bracket is integrally formed on an edge of the level plate in contact with the slide plate. The peripheral movable structure of the seismic isolation free access floor according to claim 1, wherein the movable structure is attached to the floor. 4. The slide panel is configured such that a contact portion of the front end of the front metal fitting with the border panel is at the same level as the lower surface of the slide panel, and the rear metal fitting is formed on the lower surface of the slide panel by a receiving member of the seismic isolation part column. The peripheral movable structure of the seismic isolation free access floor according to any one of claims 1 to 3, wherein the structure is supported slightly higher than the horizontal position.