JP2010265600A - Floor panel and reinforcing method thereof - Google Patents

Abstract

[PROBLEMS] To improve durability while achieving thinning of an upper plate and a lower plate as a floor panel.
An upper plate 5 and a lower plate 7 are integrally formed by joining and fixing flange portions 15 and 17 on the outer peripheral side thereof to the lower plate 7 side between the upper plate 5 and the lower plate 7. A floor panel 1 is formed by filling a mortar 9 in a certain recess 11. The floor panel 1 has a substantially square shape in plan view, and the reinforcing member 25 is provided on the convex curved surface 23a inside the bent portion 23 between the side surface portion 21 in the corner portion 7A on the lower plate 7 side of the four corners and the flange portion 17. Is provided.
[Selection] Figure 1

Description

  The present invention relates to a floor panel having a structure in which a metal upper plate and a metal lower plate provided with a recess on the side facing the upper plate are overlapped with each other and the peripheral portions thereof are fixed to each other, and a reinforcing method thereof.

  In recent years, a double floor system has been adopted in response to an increase in the amount of power, telephone, and data. In this double floor system, a large number of pillars are erected on a floor base material such as a concrete slab, and the periphery of the corner of the floor panel is supported by the pillars. The gap is used as a wiring space, and cables such as power lines and information lines are wired in this wiring space.

  As a floor panel used in such a double floor system, a flat plate-like upper plate and a lower plate having a recess for accommodating a filler such as mortar on the upper plate side are provided. Are joined to each other and their peripheral portions are joined and fixed (see Patent Document 1 below).

Japanese Patent No. 3222651

  By the way, about the cost reduction of the floor panel used for the above-mentioned double floor system, since it is the steel plate which constitutes the upper plate and the lower plate which occupy much of the material cost, the thickness of the steel plate is increased in strength. There is a demand for thinning while maintaining.

  On the other hand, when such a floor panel is used, the load load tends to concentrate around the corner supported by the column, and as a result, the steel plate is thinned as described above, and the strength around the corner is reduced. There is a need to ensure sufficient durability and increase durability.

  Then, this invention aims at improving durability, achieving thickness reduction of an upper board and a lower board as a floor panel.

  According to the first aspect of the present invention, a metal upper plate having a corner portion on the outer peripheral portion, a concave portion on the side facing the upper plate, and a corner portion corresponding to the corner portion of the upper plate on the outer peripheral portion. The lower plate made of metal is joined and fixed with the respective peripheral portions being overlapped with each other, and the concave portion of the lower plate is directed to the bottom surface portion facing the upper plate and from the outer peripheral edge of the bottom surface portion to the upper plate. And a reinforcing member is provided at a bent portion between the side surface portion and the peripheral edge portion at a corner portion of the lower plate.

  According to a second aspect of the present invention, there is provided a metal upper plate having a corner portion on the outer peripheral portion and a corner portion corresponding to the corner portion of the upper plate on the outer peripheral portion having a concave portion on the side facing the upper plate. The lower plate made of metal is joined and fixed with the respective peripheral portions being overlapped with each other, and the concave portion of the lower plate is directed to the bottom surface portion facing the upper plate and from the outer peripheral edge of the bottom surface portion to the upper plate. And a side part continuous with the peripheral part, and both end parts are bent with respect to the bottom part and the peripheral part at the corner part of the side part, and the bottom part and the peripheral part are between each other. And a load acting on the corner portion is dispersed by the inclined surface.

  According to a third aspect of the present invention, there is provided a metal upper plate having a corner portion on the outer peripheral portion, a concave portion on the side facing the upper plate, and a corner portion corresponding to the corner portion of the upper plate on the outer peripheral portion. A metal lower plate is bonded and fixed with each peripheral portion being overlapped with each other, and the concave portion of the lower plate is directed to the bottom surface portion facing the upper plate, and from the outer peripheral edge of the bottom surface portion to the upper plate. It has a side surface portion that rises and continues to the peripheral edge portion, and a reinforcing member is provided at a bent portion between the side surface portion and the peripheral edge portion at the corner of the lower plate to reinforce.

  The invention of claim 4 is the floor panel reinforcing method according to claim 3, wherein after forming the lower plate, a reinforcing member is provided at the bent portion to reinforce, and then the lower plate and the upper plate are reinforced. The plate is bonded and fixed such that the respective peripheral portions overlap each other, and the concave portion between the bonded upper plate and the lower plate is filled with a filler.

  According to the invention of claim 1 or 3, even if the upper plate and the lower plate are thinned to reduce the material cost, the durability as a floor panel is enhanced by reinforcing the corner portion where the load is concentrated. be able to.

  According to the invention of claim 2, the load load around the corner portion can be dispersed by the inclined surface of the corner portion where the load load is concentrated, and the upper plate and the lower plate are thinned to reduce the material cost. Even so, the durability of the floor panel can be increased.

  According to the invention of claim 4, by providing the reinforcing member after forming the lower plate, the strength of the reinforced corners can be more reliably maintained, and by filling the filler, the upper plate and the lower plate A floor panel combined with a filler is formed to further improve the strength.

(A) is AA sectional drawing of the floor panel of FIG. 3 which shows the 1st Embodiment of this invention, (b) is a perspective view which shows the corner | angular part periphery of the lower board which comprises the floor panel of (a). is there. FIG. 4 is a side view showing in cross section half of a floor panel used in the double floor system of FIG. 3. It is a perspective view which decomposes | disassembles and shows a part of double floor system which uses the floor panel of FIG. 1, FIG. (A) is sectional drawing corresponding to FIG. 1 (a) of the floor panel which shows the 2nd Embodiment of this invention, (b) is a bottom view of (a).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
As shown in FIG. 3, the floor panel 1 has a double floor system in which a corner base between adjacent ones is supported by a column 3 and a floor base material such as a concrete slab on which the column 3 is installed. Configure.

  As shown in FIG. 2, the floor panel 1 includes an upper plate 5, a lower plate 7, and a mortar 9 as a filler that fills a gap between the upper plate 5 and the lower plate 7. Yes. The upper plate 5 and the lower plate 7 are made of metal made of a steel plate, and the lower plate 7 is provided with a concave portion 11 on the side facing the upper plate 5 and has a concave curved surface on the back surface opposite to the upper plate 5. Dimples 13 serving as a plurality of depressions are provided.

  As shown in FIG. 3, the upper plate 5 and the lower plate 7 are both substantially square in plan view, and therefore have corners 5A and 7A at the four corners, respectively.

  The upper plate 5 and the lower plate 7 are formed by fixing and fixing the flange portions 15 and 17 formed on the outer peripheral portion to each other by welding or the like, and the tip (bottom portion) of the dimple 13 of the lower plate 7 and the upper plate 5. These contact portions are also fixed by welding. And the mortar 9 mentioned above is filled in the recessed part 11 which comprises the space | gap between the upper board 5 and the lower board 7. FIG.

  Here, the lower plate 7 of the present embodiment is manufactured by press forming, and the concave portion 11 has a bottom surface portion 19 facing the upper plate 5 and an outer peripheral end portion of the bottom surface portion 19 toward the upper plate 5. And a side surface portion 21 continuous with the flange portion 17 described above.

  And as shown in FIG. 1, between the side part 21 and the flange part 17 in the corner | angular part 7A of the lower board 7, the bending part 23 by which the inner mortar 9 side becomes a convex curve is formed by press molding. . Since the bent portion 23 is a portion that is pulled and thinned at the time of drawing by a press, the strength tends to be low.

  Further, the bent shape as the bent portion 23 as described above is formed by press molding over the entire circumference including not only the corner portion 7A but also the side portion, but the periphery of the corner portion 7A is supported by the support column 3 and loaded. The load tends to concentrate.

  For this reason, in this embodiment, the reinforcing member 25 is attached to the stress concentration part of the back surface on the mortar 9 side of the bent portion 23 in the corners 7A of the four corners of the lower plate 7. The reinforcing member 25 has a curved shape corresponding to the bent shape of the bent portion 23, and the concave curved surface 25 a is adhered to the convex curved surface 23 a of the bent portion 23 with an adhesive.

  That is, in this embodiment, as shown in FIG. 1B, after the lower plate 7 is press-molded, a reinforcing member 25 is provided on the bent portion 23 for reinforcement. Thereafter, the lower plate 7 and the upper plate 5 are joined and fixed by overlapping the flange portions 15 and 17 with each other, and the lower plate is placed in the recess 11 between the joined and fixed upper plate 5 and lower plate 7. 7 is filled with mortar 9 as a filler from an injection hole provided at an appropriate site.

  The reinforcing member 25 has a two-layered sheet-like member made of foam curable resin and glass cloth attached to the bent portion 23 via an adhesive provided on the foam curable resin side. After affixing the reinforcing member 25, the upper plate 5 and the lower plate 7 are bonded and fixed, and then the foam-curing resin is foam-cured by heating in the coating process, thereby further enhancing the reinforcing effect. The mortar 9 is filled after the painting process.

  Before the reinforcing member 25 is attached to the bent portion 23, a release paper is attached to the adhesive layer on the foam cured resin side, and this release paper is peeled off when performing the attaching operation.

As described above, the floor panel 1 of the present embodiment has a corner portion 7A which is thinned by drawing to the lower plate 7 and easily reduced in strength, and is supported by the support column 3 and load load is easily concentrated. The bent portion 23 is reinforced by the reinforcing member 25. For this reason, even if the upper plate 5 and the lower plate 7 are thinned to reduce material costs, the durability of the floor panel 1 used as a double floor system can be enhanced.
Further, by reinforcing the bent portion 23 of the corner portion 7A, deformation around the corner portion 7A can be suppressed, and rattling around the corner portion 7A supported by the support column 3 can be suppressed to provide a high-quality double floor system. be able to.

  Moreover, in this embodiment, the strength of the reinforced corner portion 7A can be more reliably maintained by providing the reinforcing member 25 after the lower plate 7 is press-molded, and the upper plate can be filled by filling the mortar 9 thereafter. 5 and the floor panel 1 combined with the lower plate 7 and the mortar 9 are used to further improve the strength.

  Thus, in this embodiment, since the strength of the corner portion 7A where the load is concentrated is improved, even if the upper plate 5 and the lower plate 7 are made thinner to reduce the material cost, the durability of the floor panel 1 is improved. Sex can be secured.

  Moreover, by reducing the amount of material used by reducing the thickness of the upper plate 5 and the lower plate 7 as described above, it is possible to contribute to the reduction of carbon dioxide, and the effect of reducing the transportation cost by reducing the weight and the carbon dioxide during transportation. The reduction effect can be expected.

  The reinforcing member 25 may be provided on the outer side of the bent portion 23 which is a concave curved surface, or may be provided on both the inner side and the outer side.

[Second Embodiment]
As shown in FIG. 4, in the second embodiment, instead of the configuration in which the reinforcing member 25 of the first embodiment is provided, the side surface portion 21 of the recess 11 in the corner portion 7 </ b> A of the lower plate 7 is an inclined surface 27. . The inclined surface 27 has both end portions 27a and 27b bent in an R shape with respect to the bottom surface portion 19 and the flange portion 17 of the concave portion 11 of the lower plate 7, and connects the bottom surface portion 19 and the flange portion 17 to each other. It is out. The angle θ formed by the inclined surface 27 and the bottom surface portion 19 is about 120 degrees.

  4B, the inclined surface 27 corresponds to the corner portion 7A in the side surface portion 21 of the recess 11, but the side portions 21a adjacent to each other other than the corner portion 7A in the side surface portion 21. On the other hand, the shape protrudes toward the tip side of the corner 7A.

  As described above, the floor panel 1 of the present embodiment is thinned by drawing to the lower plate 7 so that the strength tends to be low, and the corner portion 7A that is supported by the support column 3 and on which the load load is easily concentrated, An inclined surface 27 having an angle θ formed with the bottom surface portion 19 of about 120 degrees is provided.

  By making the side surface portion 21 in the corner portion 7A into an inclined surface 27 having an angle θ with the bottom surface portion 19 of about 120 degrees, the side surface portion 21a is substantially perpendicular to the bottom surface portion 19 like the side surface portion 21 in the side portion 21a. Compared with the case where it has become, while being able to suppress thinning by drawing, the area which forms the side part 21 increases, Therefore A load can be disperse | distributed to this increased area part. As a result, the strength around the corner portion 7A is increased. Therefore, as in the first embodiment, even if the upper plate 5 and the lower plate 7 are thinned to reduce the material cost, the durability as the floor panel 1 is achieved. Can increase the sex.

  In the above-described embodiment, the angle θ formed with the bottom surface portion 19 of the inclined surface 27 is about 120. However, this angle θ is not particularly limited as long as the load load at the corner portion 7A can be dispersed. Absent.

  Further, in this embodiment, the mortar 9 to be filled enters the outer peripheral side of the flange portion 17 in the corner portion 7 </ b> A provided with the inclined surface 27, and is combined with the upper plate 5 and the lower plate 7 and the mortar 9. Thus, the stress dispersion effect on the inclined surface 27 of the floor panel 1 can be further enhanced.

5 Upper plate 7 Lower plate 5A Upper plate corner 7A Lower plate corner 9 Mortar (filler)
11 Lower plate recess 15 Upper plate flange (periphery)
17 Lower plate flange (periphery)
DESCRIPTION OF SYMBOLS 19 Bottom part of recessed part 21 Side part of recessed part 23 Bending part of corner | angular part of lower board 25 Reinforcement member 27 Inclined surface which connects bottom part and flange part

Claims (4)

  A metal upper plate having corners on the outer periphery, and a metal lower plate having recesses on the side facing the upper plate and having corners corresponding to the corners of the upper plate on the outer periphery. The peripheral portions of the lower plate overlap and are fixed to each other, and the concave portion of the lower plate rises from the outer peripheral end of the bottom portion toward the upper plate and continues to the peripheral portion. The floor panel is characterized in that a reinforcing member is provided at a bent portion between the side surface portion and the peripheral edge portion at a corner portion of the lower plate.   A metal upper plate having corners on the outer periphery, and a metal lower plate having recesses on the side facing the upper plate and having corners corresponding to the corners of the upper plate on the outer periphery. The peripheral portions of the lower plate overlap and are fixed to each other, and the concave portion of the lower plate rises from the outer peripheral end of the bottom portion toward the upper plate and continues to the peripheral portion. And provided with an inclined surface in which both end portions are bent with respect to the bottom surface portion and the peripheral edge portion to connect the bottom surface portion and the peripheral edge portion. A floor panel in which a load acting on the corner portion is dispersed by the inclined surface.   A metal upper plate having corners on the outer periphery, and a metal lower plate having recesses on the side facing the upper plate and having corners corresponding to the corners of the upper plate on the outer periphery. The respective peripheral portions are overlapped and fixed to each other, and the concave portion of the lower plate rises from the outer peripheral end of the bottom portion toward the upper plate and continues to the peripheral portion. A floor panel reinforcing method comprising: providing a reinforcing member at a bent portion between the side surface portion and the peripheral edge portion at a corner portion of the lower plate.   After forming the lower plate, a reinforcing member is provided at the bent portion to reinforce, and then the lower plate and the upper plate are joined and fixed with their respective peripheral portions overlapped to each other, and the bonded and fixed The method for reinforcing a floor panel according to claim 3, wherein a filling material is filled in the concave portion between the upper plate and the lower plate.

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