JPH0579172A - Response control floor - Google Patents

Abstract

PURPOSE:To move a response control floor surface smoothly in the case an earthquake occurs and to prevent a boundary section between a fixed floor surface and the response control floor surface from varying. CONSTITUTION:A response control floor is so constituted that an overhanging floor surface 5 is formed in a boundary section between a response control floor surface 2 and a fixed floor surface 3. The overhanging floor surface 5 is placed in a state to mount a supported section 7 on a sliding support section 6 provided to the circumferential edge section of the fixed floor surface 3, and frictional resistance between the overhanging floor surface 5 and the fixed floor surface 3 when the response control floor surface 2 is moved in the case of an earthquake is reduced as soon as possible. In the case an earthquake occurs, the overhanging floor surface 5 follows the response control floor surface 2 to move only in a horizontal direction, and jumps, etc., are prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation floor which is disposed on a floor slab of a building and which damps horizontal vibration due to an earthquake or the like.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 8, a seismic isolation floor has a seismic isolation floor surface 2 which is displaced relative to a floor slab 1 and the floor slab 1.
And a fixed floor surface 3 fixed to the fixed floor surface 3 and an overhanging floor surface 5 for closing a gap 4 formed between the seismic isolation floor surface 2 and the fixed floor surface 3 so as to be displaceable. It

Conventionally, the overhanging floor surface 5 is shown in FIG.
As shown in (b), one side edge of the seismic isolation floor surface 2 was hinged.

[0004]

However, in the above-mentioned conventional example, one edge of the overhanging floor surface 5 which is projected from the seismic isolation floor surface 2 slides while one end edge slides on the fixed floor surface 3. It is difficult to set the sliding resistance with the fixed floor surface 3 and the sliding resistance changes over time, and it is difficult to manage the sliding resistance. As shown by the broken line in b), there is a risk of hindering evacuation and operation of the dolly because it is bounced up. Furthermore, it is necessary to connect to the seismic isolated floor surface 2 with a hinge structure, and manufacturing or construction work It had a drawback of being troublesome.

The present invention has been made to solve the above-mentioned drawbacks. The seismic isolation floor surface moves smoothly in the event of an earthquake, and the boundary portion between the fixed floor surface and the seismic isolation floor surface is The purpose is to provide a base-isolated floor whose state does not change.

[0006]

According to the present invention, the above object is to provide a seismic isolation floor surface 2 movable relative to a floor slab 1 as shown in FIG. A fixed floor surface 3 that is arranged so as to surround the floor surface 2 and is integral with the floor slab 1, and a projecting floor surface that projects from the periphery of the seismic isolation floor surface 2 and closes a gap 4 between the fixed floor surface 3 5 and the upper surface of the peripheral edge of the fixed floor surface 3 on the seismic isolation floor surface 2 side,
A sliding bearing 6 is provided, and the overhanging floor surface 5 is achieved by providing a seismic isolation floor slidably supported on the sliding bearing 6 in a supported portion 7 provided on the back surface.

[0007]

In the present invention, the projecting floor surface 5 is attached to the boundary between the seismic isolation floor surface 2 and the fixed floor surface 3, and the seismic isolation floor surface 2 is movable between the fixed floor surface 3 and the fixed floor surface 3. Gap 4 formed in
Is blocked. The overhanging floor surface 5 is arranged in a state in which the supported portion 7 is placed on the sliding bearing portion 6 provided on the peripheral portion of the fixed floor surface 3, and slides smoothly on the fixed floor surface 3.

As a result, it becomes unnecessary to consider the frictional resistance between the overhanging floor surface 5 and the fixed floor surface 3, so that it becomes easy to set and manage the swing width with respect to the earthquake intensity. Furthermore, when an earthquake occurs, the overhanging floor surface 5 is the seismic isolation floor surface 2
Following this, it moves only in the lateral direction and prevents jumps and the like.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. First, the overall structure of a seismic isolation floor to which the present invention is applied will be described with reference to FIGS. 1 to 3. The seismic isolation floor includes a slide structure 11 that is movable relative to the floor slab 1, a seismic isolation floor surface 2 formed on the slide structure 11, and a wall surface 12 that surrounds the seismic isolation floor surface 2. It is composed of a fixed floor surface 3 formed along the above and a projecting floor surface 5 projecting from the seismic isolation floor surface 2.

The slide structure 11 is an integrated structure in which movable legs 14 slidably supported on a low friction member 13 fixed on the floor slab 1 are connected by a connecting rod 15.
At the upper end of each moving leg 14, a protrusion 16 for preventing panel shift is provided.
A panel support plate 17 having is attached. The slide structure 11 is biased toward the wall surface 12 by a plurality of tension springs 18 having one end connected to the floor slab 1, and is positioned at the center of the room.

The seismic isolation floor surface 2 is composed of a plurality of floor panels 19, 19 ... Fixed on the slide structure 11. Each floor panel 19 has a panel support plate 17 at four corners.
It is mounted in a state in which it is supported on the top and the abutting corners are pressed against the connection cap 20 connected to the panel support plate 17.

However, when an earthquake occurs, due to the inertia of the seismic isolated floor surface 2 and the equipment installed thereon,
The seismic isolation floor surface 2 tries to stay in the original position while sliding on the floor slab 1, absorbs the impact to the equipment, and also reduces the friction of the amplitude seismic energy due to the sliding of the slide structure 11 on the low friction member 13. Is done.

On the other hand, the fixed floor surface 3 has a plurality of floor panels 19, 19 on a fixed leg 21 fixed on the floor slab 1.
・ It is formed by fixing and is installed so as to surround the seismic isolation floor surface 2. Further, a gap 4 is provided between the fixed floor surface 3 and the outer peripheral edge of the seismic isolation floor surface 2 to secure the movement range of the seismic isolation floor surface 2, and the inner peripheral edge of the fixed floor surface 3. A slide bearing 6 made of a low friction material such as polyamide-imide is provided in the vicinity.

On the other hand, the overhanging floor surface 5 is constituted by connecting a plurality of slide panels 8 with a joint member 9 so as to close the gap 4 between the fixed floor surface 3 and the seismic isolation floor surface 2. In addition, the seismically isolated floor surface 2 is projected so as to cover the fixed floor surface 3.

As shown in detail in FIGS. 4 and 5, the slide panel 8 has a panel body 22 that is thinner than the floor panel 19, and a stainless plate or the like is attached to the center of the rear surface of the panel body 22. Supported portion 7 formed by the above, an edge member 23 attached to one side edge of the panel body 22, and a plurality of setters 24, 24 provided corresponding to the panel support plate 17 of the slide structure 11. And a reinforcing member 25 fixed between these setters 24.

In this embodiment, the setter 24 is a slide panel 8 formed thinner than the floor panel 19.
Has a bottom plate member 26 that bulges downward so that it can be fixed using the connection cap 20 similarly to the floor panel 19, and as shown in FIG.
After mounting the bottom plate member 26 on the panel support plate 17, the floor panel 19 is connected to the floor panel 19 at the outermost periphery of the seismic isolated floor surface 2 only by tightening the connection cap 20 for fixing the floor panel 19. Is configured as follows.

As shown in FIGS. 1 and 7, the slide panel 8 connected to the seismic isolation floor 2 as described above bears the supported portion 7 by the slide bearing 6 on the fixed floor 3. The friction with the fixed floor surface 3 when the seismic isolation floor surface 2 moves is reduced as much as possible.

Further, the joint member 9 for connecting the slide panels 8 to each other is constructed so as to sandwich the panels in the panel insertion openings 27, 27 opened on both sides, so as to prevent the slide panel 8 from rising at the connecting portion. To prevent.

Further, although no device or the like is usually installed on the slide panel 8, when an excessive addition is added to the slide panel 8 at the time of carrying in the device, the base end portion of the slide panel 8, Alternatively, the support projection 10 is provided on the back surface of the joint member 9 so as not to deform the panel body 22, and for the same reason, as shown in FIG. Is also provided with a support protrusion 28.

[0020]

As is apparent from the above description, according to the seismic isolated floor of the present invention, the sliding bearing portion provided with the overhanging floor surface projecting from the seismic isolation floor surface on the fixed floor surface is slidably supported. Therefore, the friction between the overhanging floor surface and the fixed floor surface is reduced, and the seismic isolated floor surface can be moved smoothly.

Further, since it is not necessary to consider the friction with the fixed floor surface, it is possible to accurately grasp the shake of the seismic isolated floor during an earthquake. Further, since the above-mentioned overhanging floor slides in parallel on the sliding bearing portion of the fixed floor, jumping up at the time of an earthquake is prevented, and safety during evacuation can be enhanced.

Further, when the overhanging floor surface is formed by a plurality of slide panels, if each slide panel is connected by a joint member, it is possible to surely prevent the slide panel from being lifted up at the connecting portion or warping of the slide panel. it can.

Further, when the supporting projection is provided on the back surface of the joint member, it is possible to reliably prevent the overhanging floor surface from being deformed.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a main part of the present invention, in which (a) is a cross-sectional view and (b) is a detailed view of an A part of (a).

FIG. 2 is a perspective view showing the overall structure of a seismic isolation floor.

FIG. 3 is a perspective view showing a boundary portion of a seismic isolation floor surface.

FIG. 4 is a perspective view of the slide panel as viewed from the back side.

5 is an enlarged view of a main part of FIG.

FIG. 6 is a sectional view taken along line BB of FIG.

7 is a cross-sectional view taken along line CC of FIG.

8A and 8B are explanatory views showing a conventional example, in which FIG. 8A is a sectional view showing a peripheral portion of a base isolation floor surface, and FIG. 8B is an enlarged view of a main portion of FIG. 8A.

[Explanation of symbols]

 1 Floor slab 2 Seismic isolation floor surface 3 Fixed floor surface 4 Gap 5 Overhanging floor surface 6 Sliding bearing portion 7 Bearing portion 8 Slide panel 9 Joint member 10 Supporting protrusion

Claims (2)

[Claims] 1. A seismic isolation floor surface that is movable relative to a floor slab, a fixed floor surface that is arranged so as to surround the seismic isolation floor surface, and is integral with the floor slab, and a peripheral edge of the seismic isolation floor surface. It has an overhanging floor surface that overhangs and closes the gap with the fixed floor surface, and a sliding bearing portion is provided on the peripheral edge upper surface of the fixed floor surface on the seismic isolation floor surface side, and the overhanging floor surface is , A seismic isolated floor which is slidably supported on the sliding bearing portion on a supported portion provided on the back surface. 2. The exemption according to claim 1, wherein the overhanging floor surface is formed by connecting a plurality of slide panels by a joint member, and a supporting projection is provided on the back surface of the joint member. Tremor.