JPH0610034Y2 - Anti-vibration double floor structure - Google Patents

Description

[Detailed Description of the Invention] << Industrial Application Field >> The present invention is an isolator on the installation base (foundation, floor, etc.) of equipment such as computer systems, OA equipment, and production equipment that generate or dislike vibration. The present invention relates to an anti-vibration double floor structure in which a floor panel is provided via a vibration isolator such as the above, and a target device is installed on the floor panel.

<< Prior Art >> Conventionally, a floor on which a computer system or OA equipment is installed is often a double floor for wiring electric wiring equipment. Such a double floor structure is a floor of a building body. In general, metal columns are erected on a slab, and multiple floor panels of a certain size are aligned vertically and horizontally while supporting the joints of each floor panel on the columns. In such a conventional double floor structure, although each floor panel is fixed to the columns, the floor panels are not fixed to each other, so if the earthquake or the vibration generated from the equipment is large, the floor panel is fixed. There was a fear that the adjacent part of the floor would rise and that the floor panel might fall off.

On the other hand, as shown in, for example, Japanese Utility Model Laid-Open No. 61-187840 or Japanese Utility Model Laid-Open No. 53-123818, there is a double floor structure having a seismic isolation or seismic resistant function.

That is, in the former publication, a rib portion and a recessed portion arranged in parallel with the rib portion are provided in the lower portion of the slab, and the leg portion of the base isolation floor is arranged in the recessed portion. A configuration in which a spring for seismic isolation is provided between is described, and in the latter publication, a horizontal hole is formed in a rib provided on the outer periphery of the floor plate,
There is described a configuration in which adjacent floor boards are fixed to each other by a fastener penetrating the lateral hole.

<Problems to be solved by the invention> By the way, in the case of the floor panel constituting such a conventional double floor structure, aluminum die casting, steel plate or particle board is taken into consideration in consideration of transportability, assembling workability and the like. Generally, it is light in weight.

However, in order to damp the vibration, mass is required, and since the conventional floor panel is lightweight, the natural frequency of the floor support structure becomes large, which is far from the frequency generated by an earthquake or normal equipment. As a result, there is a problem that the vibration absorption performance is deteriorated.

The present invention has been made in view of the above problems, and an object thereof is a vibration-proof double floor that is free from fear of rising or falling of an adjacent portion of a floor panel and can effectively absorb expected vibration. It is in providing structure.

<< Means for Solving the Problems >> In order to achieve the above object, a vibration isolation double floor structure according to the present invention is provided with a plurality of substrates via a support body provided with a vibration isolator for damping vibration energy on a base. In the anti-vibration double floor structure in which the floor panels of the above are supported side by side, the floor panels are
It is made of concrete and is formed to have a constant size, and a rib is integrally formed on the lower surface along the peripheral edge thereof, and the rib has a first through hole penetrating along the extension direction thereof. A second through hole penetrating in a direction orthogonal to the extending direction is formed, and floor panels adjacent to each other in the extending direction are PC steel rods through which the sheath tube embedded in the first through hole is inserted, or While the PC steel wire is connected by introducing tension, the floor panels adjacent to each other in the direction orthogonal to the extension direction are tightened and fixed by a bolt inserted through the second through hole and a nut screwed with the bolt. It is characterized by

<< Operation >> Since the floor panels reinforced by the ribs are tightly connected to each other with a bolt or a tension material such as PC steel material, it is possible to strongly integrate the floor panels to form a floor having the same swing direction.

<Example> Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a partial side view showing an anti-vibration double floor structure 1 of the present invention. This anti-vibration double floor structure 1 is made of a concrete steel floor panel 2 having a size of about 3 meters in length and 0.9 meters in width as shown in FIG. The joist 3 is installed on the joist 3, and the joist 3 is further supported by an isolator 6 which is erected with a base fixed on a concrete base. The support for the floor panel 2 is the isolator 6 described above.
And joists 3.

On the back surface of the floor panel 2, there are formed two ribs 7 extending along the periphery of the back surface and the middle thereof. Further, through holes (second through holes) 8 through which bolts for connecting with adjacent panels are inserted are provided symmetrically in the peripheral edge portion of the rib 7.

The rib 7 of the floor panel 2 has a sheath tube 9 embedded in advance in a first through hole (not shown) that penetrates the rib 7 in the transverse direction. P for introducing prestress to the sheath tube 9
A floor panel 2 is provided side by side on a joist 3 by passing a C steel rod 10 and introducing prestress to the PC steel rod 10.
The mutual support pressure can be increased.

The floor panels 2 are arranged on the joists 3 in the column direction and the row direction, as shown in FIG. The floor panel 2 is reinforced by the ribs 7, and the ribs 7 retain the contour shape of the floor panel 2.
A lid 11 which can be freely removed within a partial area surrounded by the ribs 7
The floor panel 2a, which is configured as described above and is provided with an opening / closing opening that opens to the back surface of the floor panel 2, is used in part.

As described above, the isolators 6 are sandwiched between the joists 3 supporting the floor panels 2 and 2a and the base 4, so that the base 4 is interposed between the floor panels 2 and 2a and the concrete base 4. The vibration transmission of is cut off. The isolator 6 includes a laminated rubber bearing, a damper that uses plastic deformation of a steel rod bent into a loop, an oil damper that mainly includes an oil-filled cylinder, and a combination of laminated rubber and an air spring. Thus, the vibration of the concrete base 4 or the vibration energy of the floor panel 2 is attenuated.

In each floor panel 2, 2a, a bolt 12 is passed through a through hole 8 between adjacent ribs 7 and a nut 13 is firmly connected and coupled. Further, in this embodiment, prestress is introduced into the sheath tube 9 through the PC steel rod 10. In this way
The floor panels 2 and the floor panels 2 and 2a are strongly integrated and have the same swing direction. Also,
Since the ribs 7 are in contact with each other on the surface and the contacting surface is fastened with the bolts 12, there is no behavior such that the adjacent side falls off the joist or climbs. In addition, an arbitrary number of floor panels 2, 2a are integrated according to the vibration performance of an earthquake or vibration generated from equipment,
Alternatively, by arranging the isolators 6 and 6 at an appropriate distance from the size of the floor panels 2 and 2a, a floor having a function of mainly absorbing vertical vibration generated by an earthquake or equipment installed in a room is configured. can do.

The floor panel is preferably made of reinforced concrete, and the prestressed steel wire 5 by pretensioning is preferably introduced into the ribs in the longitudinal direction.

<Effect> As described in detail above, according to the vibration isolating double floor structure of the present invention, a plurality of floor panels can be integrated to enhance rigidity and mass, and the floor panel is made of concrete and has a mass. Combined with the large value, it is possible to increase the damping effect of the vibration generated by the earthquake or the device.

Further, since the floor panel is joined and integrated with the ribs formed along the peripheral edge of the floor panel to form the floor panel, the ribs come into contact with each other at the end faces, and the adjacent portions are damaged or raised.
There is no worry of dropping out, and it is highly safe.

Furthermore, by reinforcing the floor panel with ribs, even if the floor thickness is made thin, it can withstand the vertical load, and the rib portion can sufficiently cope with the introduction of prestress.

[Brief description of drawings]

FIG. 1 is a partial side view showing a part of a side surface of a vibration isolation double floor structure of the present invention, FIG. 2 is a perspective view of a floor panel unit, and FIG. 3 is a perspective view showing a state in which the floor panel units are arranged side by side. It is a figure. 1 …… Anti-vibration double floor structure 2 …… Floor panel 3 …… Joist of shaped steel 4 …… Concrete base 5 …… Steel wire for pretension 6 …… Isolator (support) 7 …… Rib 8 …… Through hole (second through hole) 9 ... Sheath tube (embedded in first through hole) 10 ... PC steel rod 11 ... Lid 12 ... Bolt 13 ... Nut

Claims (1)

[Scope of utility model registration request] 1. A vibration-proof double-floor structure in which a plurality of floor panels are adjacently provided side by side via a support provided with a vibration isolator for damping vibration energy on a base, and the floor panels are fixed. Is made of concrete and has a rib integrally formed on the lower surface thereof along the periphery thereof. The first penetrating the rib along the extension direction thereof.
And a second through hole penetrating in a direction orthogonal to the extension direction is formed, and the floor panels adjacent to each other in the extension direction are sheaths embedded in the first through hole. The floor panels adjacent to each other in the direction orthogonal to the extending direction are connected to each other by introducing tension into a PC steel rod or a PC steel wire which is inserted through the pipe, and the bolt and the bolt which are inserted through the second through hole. Anti-vibration double floor structure characterized by being tightened and fixed by nuts that are screwed together.