JPH0748922A - Base-isolating floor, and device therefor - Google Patents

Abstract

PURPOSE:To construct a base-isolating floor in a desired area by a method wherein support legs in required numbers are removed out of a double floor structure while a base is fixed to the remaining support legs, and a floor member is attached to the base through base-isolating springs. CONSTITUTION:Support legs 3 for constructing a double floor by bearing floor panels 2 and 2 with their heads are erected at specified intervals on a floor member 1. A device for base-isolating floor is installed to a specified position by removing, for instance, the support legs 3 in numbers necessary for securing a required space while fixing a base 4 to the remaining support legs 3, and by making a floor member 6 supported at its reverse side with base-isolating springs 5 erected on the base 4. A damping device 15 composed of an air damper is provided between the base 4 and the floor member 6 and is connected with linking devices 16, and horizontality of the floor member 6 is maintained thereby. In the case where the floor member 1 vibrates in the vertical direction because of earthquake or the like, the base-isolating springs 5 work on base isolation, and response vibration is damped and ceased by the damping device 15.

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 device and a seismic isolation floor.

[0002]

2. Description of the Related Art As a seismic isolation floor constructed to protect an information processing device or the like in the event of an earthquake, conventionally, a floor base of a room in which the information processing device or the like is installed absorbs vibration caused by the shaking of the earthquake. It has been practiced to construct a seismic isolation structure including seismic isolation springs and the like and to lay a floor surface on the seismic isolation structure.

[0003]

However, such a conventional example has a drawback that the construction is troublesome because the seismic isolation structure is large-scaled.

The present invention has been made to solve the above drawbacks, and an object of the present invention is to provide a seismic isolation floor device capable of easily constructing a seismic isolation floor in a desired area.

[0005]

The structure of the present invention is shown in FIG. On the floor base 1, the floor panels 2, 2, ...
The support legs 3 that support the above to construct a double floor are erected at predetermined intervals.

The seismic isolation floor device has a base 4, a seismic isolation spring 5 standing on the base 4, and a floor member 6 whose back surface is supported by the seismic isolation spring 5. It is installed at a predetermined position by being fixed to the support leg 3.

[0007]

According to the above construction, when the floor base 1 vibrates in the vertical direction due to an earthquake or the like, it is isolated by the seismic isolation spring 5 to form a floor surface on which a large electronic device such as an information processing device is installed. Vibration is suppressed from being transmitted to the floor member 6.

The seismic isolation floor device can be installed in a predetermined area simply by fixing the base 4 to the support legs 3. For example, an installation space for the seismic isolation floor device is secured from an existing double floor device. After removing the necessary number of supporting legs 3 to secure the base 4, the base 4 is fixed to the remaining supporting legs 3 to easily construct a base-isolated floor in a desired area.

According to the second aspect of the invention, the floor member 6 and the base 4 are connected via a link mechanism 16,
The horizontal state of the floor member 6 is maintained. Further, in the invention according to claim 3, the floor member 6 and the base 4 are the damping mechanism 1
It is connected via 5, and the response vibration in the vertical direction is quickly converged.

Further, as shown in FIG. 2, in the invention according to claim 4, the support leg 3 is erected on the horizontal seismic isolation structure 7 for absorbing the horizontal vibration of the floor base 1. In addition to the vertical seismic isolation, the horizontal seismic isolation effect can be similarly exerted with a simple configuration.

Further, in the invention according to claim 5 shown in FIGS. 6 and 7, a plurality of base isolation floor devices are arranged adjacent to each other,
The seismic isolation floor devices are connected by a connecting device 8. The coupling device 8 operates so as to match the displacement of the floor member 6, and a plurality of seismic isolation floor devices provides a seismic isolation floor having a large area and having no harmful inclination due to the occurrence of the phase difference of vibration. To be

[0012]

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. The seismic isolation floor system according to the first embodiment of the present invention is shown in FIGS. The double floor device is a so-called three-dimensional seismic isolation floor capable of absorbing horizontal shaking and vertical vibration, and is installed on a horizontal seismic isolation structure 7 built on the floor base 1.

The horizontal seismic isolation structure 7, as shown in FIG.
A frame 10 in which the beam members 9, 9 ...
A plurality of support legs 3, 3, ... Standing on the lattice points of the gantry 10.
, A plurality of floor panels 2, 2, ..., which are supported by the stigmas of the supporting legs 3 on the back surfaces of the four corners to form a horizontal seismic isolation floor surface at an appropriate height above the floor base 1, and on the bottom surface of the gantry 10. And a sliding plate 11 fixed to a portion corresponding to the grid point.
It is installed on the floor base 1 by placing the on the sliding member 12 fixed on the floor base 1.

The horizontal seismic isolation structure 7 constructed as described above
Can be provided in a part of the room or over almost the entire center of the room. The floor panel 2 located in the peripheral part of the room and the floor surface in the non-seismic isolation area can be A moving absorption space is formed between which is covered by a slidable panel.

Further, as shown in FIGS. 3 and 5, the horizontal seismic isolation structure 7 is pulled from all sides by the tension springs 13 having one end fixed to the floor base 1, and normally, the tension springs 13 are It is stationary in a position where it balances power.

Therefore, in this embodiment, the floor base 1
Is shaken in a horizontal direction due to an earthquake or the like, and relative displacement occurs between the floor base 1 and the horizontal seismic isolation structure 7, the sliding plate 11
The friction between the sliding member 12 and the spring force of the tension spring 13 suppresses and converges the vibration with a predetermined damping force.

On the other hand, the seismic isolation floor device is installed to form a vertical seismic isolation floor surface having a seismic isolation performance against vertical vibration on a part of the seismic isolation floor surface by the horizontal seismic isolation structure 7.
As shown in Fig. 5, forming the vertical seismic isolation floor on a part of the horizontal seismic isolation floor reduces the construction cost, and responds to the fluctuation of the load on the floor during walking. It is useful for preventing the surface from vertically vibrating, and is preferably configured only in the installation area of a large electronic device such as an information processing device.

This seismic isolation floor device is provided with the horizontal seismic isolation structure 7 described above.
Installed in an installation space formed by removing an appropriate number of support legs 3, 3, ... Standing above, formed into a frame shape or a flat plate shape, and via a fixing tool 14 provided on the periphery thereof. A base 4 fixed to the remaining support legs 3, a seismic isolation spring 5 provided on the base 4, and a floor member 6 whose back surface is supported by the seismic isolation spring 5 to form a vertical seismic isolation floor surface. (See FIGS. 3 and 4).

The seismic isolation spring 5 is a compression coil spring, and its spring constant has a value sufficient to lengthen the natural period of the vertical seismic isolation floor in response to vertical vibration of the floor base 1 due to an earthquake or the like. Is set. Further, the free length is such that when a large electronic device such as an information processing device is installed on the floor member 6 supported by the seismic isolation spring 5, the floor member 6 causes the floor panel 2 to move.
The height is set to approximately match the installation height of.

Reference numeral 15 denotes a damping mechanism, which is provided in order to quickly converge the vertical response vibration of the floor member 6. Further, since the horizontal seismic isolation mechanism 7 is low in height from the floor base 1, the space up to the floor member 6 becomes high, so that the seismic isolation spring 5 having a low natural frequency can be used and the damping mechanism 15 In this embodiment, an air damper is used as the damping mechanism 15 because the load on the damper is reduced.

A link mechanism 16 and a guide mechanism 17 are incorporated in the seismic isolation floor device to prevent the floor member 6 from swinging. As shown in detail in FIG. 4, the link mechanism 16 includes four pairs of links 16a, 16a, ... Which are pivotally supported at the four corner rear surfaces of the floor member 6 and opposing positions on the base 4, and adjacent pairs of links. The pair of connecting links 16c and 16c for connecting the pivots 16b of 16a to each other is provided. By matching the displacements of the link pairs 16a and 16a connected by the connecting link 16c, the floor member 6 is prevented from being inclined.

On the other hand, the guide mechanism 17 is provided upright at the four corners of the base 4, and has a guide post 17b having a rotating roller 17a at the upper end thereof and a guided post projecting from the rear surface of the four corners of the floor member 6. 17c and guided post 17c
Is brought into contact with the rotating roller 17a of the guide post 17b to guide the moving direction of the floor member 6,
Prevent the inclination of the.

Therefore, in this embodiment, the horizontal seismic isolation structure 7 exerts the seismic isolation effect as described above with respect to the horizontal vibration, and the seismic isolation spring 5 is isolated with respect to the vertical vibration. The seismic motion is performed, and the damping mechanism 15 converges and damps the response vibration.

In the above description, the case where the seismic isolation floor device is installed on the horizontal seismic isolation structure 7 to construct a three-dimensional seismic isolation floor as a whole has been described. As shown, it is of course possible to install a seismic isolation floor device directly on the floor base 1 and construct a floor surface that exerts seismic isolation effect only for vertical shaking.

FIG. 6 shows a second embodiment of the present invention. In this embodiment, a plurality of seismic isolation floor devices are arranged adjacent to each other, and a plurality of large electronic devices are arranged side by side, or an installation area larger than the standardized floor member 6 area of the seismic isolation floor device. This is an effective modification for enabling compatibility with large-sized electronic devices having.

In the description of this embodiment, the same components as those in the first embodiment are designated by the same reference numerals in the drawings, and the description will be omitted. Further, FIG. 6 shows an example in which a seismic isolation floor device is directly installed on the floor base 1 to construct a seismic isolation floor having a seismic isolation effect only for vertical vibration.
It is of course possible to arrange the above-mentioned horizontal seismic isolation structure 7 on this lower surface so as to enable three-dimensional seismic isolation.

In this embodiment, a plurality of seismic isolation floor devices (two in the illustrated example) are arranged adjacent to each other in the displacement direction of the link pair 16a, and are located at the boundary between the floor members 6 of the adjacent seismic isolation floor devices. The connection panel 18 is arranged.

The seismic isolation floor devices are connected by a connecting device 8A. The connecting device 8A is configured by connecting the link pairs 16a to each other with the connecting rod 19, and by this configuration, the displacements of the link pairs 16a of the adjacent seismic isolation floor devices are the same,
As a result, adjacent floor members 6 are prevented from responding in different phases.

The connecting panel 18 is installed to close the gap formed at the boundary between the floor members 6 of both seismic isolation floor devices, and the floor members 6 are firmly fixed to each other via the connecting panel 18. It is also possible that the connection panel 18 has the function as the connection device 8.

FIG. 7 shows the seismic isolation floor device as a link pair 16a.
A modified example of the coupling device 8 when arranged in a direction orthogonal to the displacement direction of is shown. In this case, the coupling device 8B is configured by coupling the pivots 16b of the adjacent link pairs 16a by the transmission shaft 20, and by such a configuration, the pivots 16b of the link pairs 16a of both the coupling devices 8 rotate at the same angular velocity. The displacement amounts of the floor members 6 are the same.

[0031]

As is apparent from the above description, according to the present invention, the base isolation floor device can be installed in a predetermined area only by fixing the base to the support legs, so that the existing double-layer structure can be installed. The floor device can be easily changed to a seismically isolated floor surface.

Further, since the seismic isolation floor surface can be provided only in the installation area of the large electronic equipment such as the information processing apparatus, the construction cost can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing the configuration of the present invention, in which (a) is a sectional view and (b) is a plan view.

FIG. 2 is a cross-sectional view showing a first embodiment of the present invention.

FIG. 3 is a plan view of FIG.

FIG. 4 is a perspective view showing a main part of the seismic isolation floor device.

FIG. 5 is a plan view showing the arrangement of seismic isolation floor devices.

FIG. 6 is a cross-sectional view showing a second embodiment of the present invention.

7 is a cross-sectional view showing a modified example of FIG.

[Explanation of symbols]

 1 floor base 2 floor panel 3 support leg 4 base 5 seismic isolation spring 6 floor member 7 horizontal seismic isolation structure 8 coupling device 15 damping mechanism 16 link mechanism

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenji Okuda 1-34 Roppongi, Minato-ku, Tokyo Within NTT Ftities Ltd. (72) Inventor Toshifumi Ninomiya 1-chome, Roppongi, Minato-ku, Tokyo No. 43 No. 33, Inc. NTT FACILITIES (72) Inventor Yukio Sawabe 5-8 Akihabara, Taito-ku, Tokyo NTT Institute of Architecture Research (72) Inventor Takehiko Okushima 1-1, Uchisaiwaicho, Chiyoda-ku, Tokyo Inside Naka Technical Research Institute Co., Ltd. (72) Inventor Takao Okumura 1-1-1, Uchisaiwaicho, Chiyoda-ku Tokyo Metropolitan Institute of Technology Nakata (72) Inventor Tatsuo Shoji 1-1 1-1 Uchisaiwaicho, Chiyoda-ku, Tokyo Inside Naka Technical Research Institute Co., Ltd. (72) Inventor Hiroyuki Masuno Chiyoda, Tokyo Uchisaiwaicho 1 Chome, Co., Ltd. Naka intra-technology Research Institute

Claims (5)

[Claims] 1. A base which is erected on a floor base and is fixed to a supporting leg for supporting a floor panel at a stigma to construct a double floor, and a base which is erected on the base and vertically oscillates. It has an absorbable seismic isolation spring and a floor member supported by the seismic isolation spring on substantially the same surface as the floor of the double floor. Seismic isolation floor equipment. 2. The seismic isolation floor device according to claim 1, wherein the floor member and the base are connected via a link mechanism to maintain the floor member in a horizontal state. 3. The floor member and the base are connected to each other via a damping mechanism for promptly concentrating the vertical response vibration.
Or the seismic isolation floor device described in 2. 4. The seismic isolation floor apparatus according to claim 1, 2 or 3, wherein the support leg to which the base is fixed is erected on a horizontal seismic isolation structure that absorbs horizontal vibrations of the floor base. . 5. A seismic isolation system in which a plurality of seismic isolation floor devices according to claim 1, 2, 3 or 4 are arranged adjacent to each other, and the seismic isolation floor devices are connected by a coupling device so that displacements of floor members are matched. floor.