Panel floor structure and floor panels

Abstract

The present invention provides a panel floor structure that allows floor panels to be fixed onto beams by working from above, and that also prevents the floor panels from moving laterally due to horizontal forces. [Solution] The panel floor structure 1 is a floor structure in which a plurality of floor panels 3 are arranged on a foundation beam 2. This panel floor structure 1 has a notch 3a in one adjacent floor panel 3 that exposes the upper surface of the foundation beam 2, and includes a beam-side fixing member 4 that is fixed to the exposed portion of the foundation beam 2 by the notch 3a, a joining member 5 that joins the floor panel 3 to the beam-side fixing member 4 so that the floor panel 3 does not float up, and a rising pin 6 that engages with the floor panel 3 and restricts the horizontal movement of the floor panel 3.

Description

Technical Field

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[0001] This invention relates to a panel floor structure in which a plurality of floor panels are arranged on beams and to floor panels.

Background Art

[0002] A conventional panel floor structure 9A shown in FIG. 12 has a structure in which a C-shaped steel joist 91a attached to the lower surface of a floor panel 91 is fixed to a beam 90 with bolts 92, and a conventional panel floor structure 9B shown in FIG. 13 has a structure in which a C-shaped steel joist 91a attached to the lower surface of a floor panel 91 is fixed to a gusset angle 93 welded to the beam 90 with bolts 92.

[0003] Patent Document 1 discloses a structure in which a fixture is pressed against the lower surface side of a flange of a beam by tightening a bolt to an insert nut embedded in the lower surface side of a floor panel, and the floor panel is fixed to the beam while the fixture compresses a beam upper buffer material by this pressing.

[0004] Patent Document 2 discloses a structure in which an end portion of a floor panel is placed on an indoor side portion of an upper surface of a steel frame beam provided on an outer peripheral portion of a building. A through hole penetrating vertically is formed in the floor panel, and the floor panel is fixed to an upper flange of the steel frame beam by a fixture attached to the through hole.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, the structures shown in Figures 12 and 13, as well as the structure in Patent Document 1, have the drawback of being unsuitable for fixing floor panels installed on a foundation, as they require the floor panel to be fixed by operating bolts from below, thus placing a burden on the worker. Furthermore, in the structures of Patent Documents 1 and 2, the floor panel is fixed by clamping the flange of the beam with a fastener, which means that the floor panel may move laterally due to horizontal forces.

[0007] In view of the above circumstances, this invention aims to provide a panel floor structure that allows floor panels to be fixed onto beams by work from above, and that prevents floor panels from moving laterally due to horizontal forces. [Means for solving the problem]

[0008] The panel floor structure of this invention, in order to solve the above problems, is a panel floor structure in which a plurality of floor panels are arranged on a beam, wherein at least one adjacent floor panel has a notch that exposes the upper surface of the beam, and is characterized by comprising a beam-side fixing member fixed to the exposed portion of the beam by the notch, a joining member that joins the floor panel to the beam-side fixing member so that the floor panel does not lift up, and a restricting means that engages with the floor panel to restrict the horizontal movement of the floor panel.

[0009] With the above configuration, the beam-side fixing member is fixed to the beam by utilizing the exposed portion of the beam created by the notch, so even if the floor panel is installed on the foundation beam, it is possible to fix the floor panel by operating bolts, nuts, etc. from above the floor. Furthermore, the floor panel is joined to the beam-side fixing member by the joining member so that the floor panel does not lift up, and the regulating means further prevents the floor panel from moving laterally due to horizontal forces.

[0010] The above-mentioned joining member has a rising plate portion that rises up in close proximity to and opposite the side surface of the floor panel, and a locking portion provided on this rising plate portion that locks the side surface of the floor panel to prevent the floor panel from lifting up. On the other hand, the beam-side fixing member is equipped with a rising pin as the regulating means, and this rising pin may be inserted into the lower surface of the floor panel. With this, the sliding movement of the floor panel can be suppressed simply and inexpensively with the rising pin.

[0011] The upper portion of the riser plate may be inclined above the locking portion, and the upper portion may be further away from the side surface of the floor panel. In this case, when the riser plate is temporarily fixed to the beam-side fixing member and the floor panel is lowered and positioned from above, the inclined upper portion receives the lower corner of the floor panel, causing the riser plate to bend. By lowering the floor panel further from this state, the locking portion on the side surface of the floor panel reaches the position of the locking portion, and the locking portion can automatically engage with the locking portion.

[0012] The floor panel has a metal plate on its side, and the locking part may be inserted into a hole formed in the metal plate located at the locking point. This allows the floor panel to be prevented from lifting up by the locking part in a simple and inexpensive manner.

[0013] The locking portion may be formed by cutting and raising a part of the rising plate portion, and may have a protruding shape that is sharp toward the side surface of the floor panel and has a lower edge that is substantially horizontal. This makes it easier to obtain the locking portion than by joining it by welding or the like.

[0014] Furthermore, a notch is formed on the lower edge, with the upper side being concave, and the edge of the hole in the metal plate may catch on this notch. This makes it possible to more reliably prevent the floor panel from lifting up.

[0015] The beam-side fixing member has a fixing surface portion that is fixed to the beam and a support surface portion on which the floor panel is placed, and the support surface portion may be provided with the rising pin.

[0016] The above joint member has a rising plate portion that rises in a state facing the side surface of the floor panel. From the insertion hole formed in this rising plate portion, a bolt that prevents the floor panel from rising and also serves as the restricting means may be fastened to a nut embedded in the side surface of the floor panel. According to this, both suppression of the lifting of the floor panel and restriction of the horizontal movement can be performed by the above bolt.

[0017] Moreover, the floor panel of this invention is a floor panel used in a panel floor structure having the above locking portion, wherein at least the side surface on the short side of the rectangular plate-shaped main body is covered with the above metal plate, and the above hole into which the above locking portion enters is formed in this metal plate.

Effects of the Invention

[0018] According to the present invention, the floor panel can be fixed on the beam by working from above, and also has an effect that it can be fixed with high resistance to the horizontal force applied to the floor panel.

Brief Description of the Drawings

[0019] [Figure 1] It is an explanatory view showing the panel floor structure of Embodiment 1, in which (A) of the figure is a plan view and (B) of the figure is a schematic cross-sectional view taken along the arrow A-A. [Figure 2] (A) of the figure is an enlarged cross-sectional view taken along the arrow B-B, and (B) of the figure is an enlarged cross-sectional view of a portion near the foundation of FIG. 1(B). [Figure 3] (A) of the figure is an explanatory view in which a part of FIG. 2(A) is enlarged, (B) of the figure is an explanatory view in which a part of FIG. 2(B) is enlarged, and (C) of the figure is a plan view of the joint member. [Figure 4] It is an explanatory view showing a construction example of the panel floor structure of FIG. 1. [Figure 5] It is an explanatory view showing another construction example of the panel floor structure of FIG. 1. [Figure 6] It is an explanatory view showing a modification example of the panel floor structure of Embodiment 1. [Figure 7] It is an explanatory view showing the panel floor structure of Embodiment 2. In the figure, (A) is a plan view, and (B) is a schematic cross-sectional view taken along the arrow C-C. [Figure 8] In the figure, (A) is a schematic enlarged cross-sectional view taken along the arrow D-D, and (B) is an enlarged cross-sectional view of a portion near the foundation of FIG. 7(B). [Figure 9] In the figure, (A) is an explanatory view enlarging a partial location of FIG. 8(A), and (B) is an explanatory view enlarging a partial location of FIG. 8(B). [Figure 10] It is an explanatory view showing a modified example of the panel floor structure of Embodiment 2. [Figure 11] It is an explanatory view showing another modified example of the panel floor structure of Embodiment 2. [Figure 12] It is an explanatory view showing a conventional panel floor structure. [Figure 13] It is an explanatory view showing another conventional panel floor structure.

Mode for Carrying Out the Invention

[0020] (Embodiment 1) Hereinafter, embodiments of this invention will be described based on the accompanying drawings. As shown in FIGS. 1(A) and 1(B), the panel floor structure 1 of the building according to the embodiment is a structure that supports a plurality of rectangular floor panels 3 on a foundation beam 2. At both corners on one long side of the four corners of the floor panel 3, notch portions 3a having a rectangular shape in plan view that expose the upper surface of the foundation beam 2 are formed. In this embodiment, the notch portion 3a has a size that enters the indoor side beyond the upper surface of the foundation beam 2. Further, for example, the length of the long side of the floor panel 3 is 4P (P = 910 mm), and the short side with a length of 1P is supported on the foundation beams 2, 2 (the other foundation beam 2 is not shown). Note that foundation piles 21 are driven below the base portion of the foundation beam 2, and soil-concrete 22 without reinforcing bars is placed on the ground, and no bundles are arranged on this soil-concrete 22.

[0021] Furthermore, as shown in Figures 2(A) and 2(B), the panel floor structure 1 includes a beam-side fixing member 4 fixed to the exposed portion of the foundation beam 2 by the notch 3a, a joining member 5 that joins the floor panel 3 to the beam-side fixing member 4 so that the floor panel 3 does not float up, and a rising pin 6 (restricting means) that engages with the floor panel 3 to restrict the horizontal movement of the floor panel 3.

[0022] The beam-side fixing member 4 is manufactured, for example, by bending a steel plate with a thickness of about 2.3 mm, and as shown in Figures 3(A), 3(B), and 3(C), it has a central recess 4a and lateral protrusions 4b located on both sides of the central recess 4a in the direction of extension of the foundation beam 2.

[0023] A through-hole is formed in the center of the central recess 4a, and an anchor bolt 23 protruding from the upper end of the foundation beam 2 is passed through this through-hole. This anchor bolt 23 is provided separately from the anchor bolts for fixing the base. The central recess 4a becomes the fixing surface that is fixed to the foundation beam 2. The beam-side fixing member 4 is fixed to the upper surface of the foundation beam 2 by fastening a nut 23a to the anchor bolt 23.

[0024] The upper surface of the lateral protrusion 4b becomes the support surface on which the floor panel 3 is placed, and the vertical plates at each of the outermost ends of the lateral protrusion 4b become the legs that stand on the foundation beam 2. The rising pin 6 is inserted from below into the hole formed in the upper surface (support surface) of the lateral protrusion 4b, and its head is welded to the lower surface of the lateral protrusion 4b.

[0025] The joining member 5 is made, for example, by bending a steel plate with a thickness of about 2.3 mm, and has a bottom plate portion 50 that fits into the central recess 4a of the beam-side fixing member 4 and is located at the bottom of the central recess 4a, a rising plate portion 51 that rises up in close proximity to the side surface of the floor panel 3 and facing it, and a locking portion 52 provided on the rising plate portion 51 that locks the side surface of the floor panel 3 to prevent the floor panel 3 from lifting up.

[0026] The bottom plate portion 50 has through holes through which anchor bolts 23 are passed. The rising plate portion 51 is formed by bending a plate portion that connects to the bottom plate portion 50. The upper part of the rising plate portion 51 is above the locking portion 52 and is inclined so that the upper part moves further away from the side surface of the floor panel 3. The locking portion 52 is made by cutting an ∠ shape into the rising plate portion 51 at the center of the width direction of the rising plate portion 51 and bending it upwards, resulting in a protruding shape that is sharp towards the side surface of the floor panel 3 and has a lower edge that is approximately horizontal.

[0027] The floor panel 3 has a metal plate 31 on its side, and the locking portion 52 fits inside a circular hole 31a formed in the metal plate located at the locking point. The floor panel 3 is a rectangular plate-shaped body, for example, with plate materials 33 bonded to the upper and lower surfaces of an insulating material 32, and at least the shorter side of the main body is covered with the metal plate 31. The metal plate 31 is formed in a U-shape in cross-section, having opposing pieces 31b sandwiched between the insulating material 32 and the upper and lower plate materials 33. In this embodiment, a notch 52a is formed on the lower edge of the locking portion 52, with the upper side being recessed, so that the edge of the hole 31a in the metal plate 31 catches on this notch 52a.

[0028] With the above configuration, the beam-side fixing member 4 is fixed to the foundation beam 2 by utilizing the exposed portion of the foundation beam 2 created by the notch 3a. Therefore, even if the floor panel 3 is installed on the foundation beam 2, it is possible to fix the floor panel 3 from above by operating the nut 23a or the like.

[0029] Furthermore, in the above configuration example, the locking portion 52 fits inside the hole 31a formed in the metal plate 31, so the lifting of the floor panel 3 can be easily and inexpensively suppressed by the locking portion 52.

[0030] Furthermore, since the locking portion 52 is formed by cutting and bending a part of the rising plate portion 51, it is easier to obtain the locking portion 52 than by joining it by welding or the like.

[0031] Furthermore, since the edge of the hole 31a in the metal plate 31 catches on 52a, the lifting of the floor panel 3 can be more reliably suppressed.

[0032] An example of the construction of the panel floor structure 1 is shown below. As an example, as shown in Figure 4, the beam-side fixing member 4 to which the vertical pin 6 is attached is placed on the upper surface of the foundation beam 2 by passing the anchor bolt 23 through the through hole in the central recess 4a of the beam-side fixing member 4. The connecting member 5 is also attached by passing the anchor bolt 23 through the bottom plate portion 50 of the connecting member 5, and the beam-side fixing member 4 and the connecting member 5 are temporarily fastened to the upper surface of the foundation beam 2 with nuts 23a.

[0033] Next, one adjacent floor panel 3 is placed on the upper surface of one of the lateral protrusions 4b, and the rising pin 6 is inserted into the lower surface of the floor panel 3. At this time, the locking portion 52 enters the inside of the circular hole 31a formed in the metal plate 31 of the floor panel 3. Then, the other adjacent floor panel 3 is placed on the upper surface of the other lateral protrusion 4b, and the rising pin 6 is inserted into the lower surface of the floor panel 3.

[0034] In this process, the upper part of the riser plate 51 is above the locking part 52, and is inclined so that the upper part moves further away from the side surface of the floor panel 3. This inclined upper part receives the lower corner of the other floor panel 3, causing the riser plate 51 to flex. By further lowering the other floor panel 3 from this position, the circular hole 31a at the locking point on the side surface of the other floor panel 3 reaches the position of the locking part 52, and the locking part 52 automatically engages with the hole 31a. After that, a tool is inserted through the notch 3a and the nut 23a is tightened. If it becomes necessary to remove the joining member 5, it can be easily removed by removing the nut 23a and lifting the upper part of the riser plate 51.

[0035] The construction method is not limited to the above. For example, as shown in Figure 5, both adjacent floor panels 3 are placed on the upper surfaces of the lateral protrusions 4b on each side, and the rising pins 6 are inserted into the lower surfaces of both floor panels 3. Then, the worker deforms the joining member 5 so that the upper parts of its two rising plate portions 51 are closer together, inserts it through the notch 3a between the two adjacent floor panels 3, releases the deformation to return it to its original natural state, and inserts the locking portion 52 into the hole 31a. Then, the nut 23a and a tool are inserted through the notch 3a, and the nut 23a is tightened to fix the joining member 5.

[0036] Furthermore, in the above example, the panel floor structure 1 was a structure that supported multiple rectangular floor panels 3 on the foundation beam 2, but it is not limited to this, and may also be a structure that supports multiple rectangular floor panels 3 on, for example, an H-shaped steel beam on the upper floor. In this upper floor structure, instead of anchor bolts 23, the beam-side fixing member 4 and the connecting member 5 may be fixed with bolts passed through through holes formed in the upper flange of the H-shaped steel beam (not shown).

[0037] Furthermore, as shown in Figure 6, the beam-side fixing member 4 has a central flat portion instead of a central recess 4a, and a surface portion 4c extending from the lower end of the leg portion. It is fixed to the upper flange F of the H-shaped steel beam with bolts 24 passed through through holes formed in this surface portion 4c, and the connecting member 5 may be fixed to the central flat portion with bolts and nuts 25 passed through through holes formed in the central flat portion.

[0038] (Embodiment 2) Other embodiments of this invention will be described below with reference to the accompanying drawings. As shown in Figures 7(A) and 7(B), the panel floor structure 1 of the building according to this embodiment is also a structure that supports a plurality of rectangular floor panels 3 on a foundation beam 2, and a rectangular notch 3a is formed in plan view at both corners of one of the long sides of the four corners of the floor panel 3, exposing the upper surface of the foundation beam 2.

[0039] Furthermore, as shown in Figures 8(A) and 8(B), this panel floor structure 1 includes a beam-side fixing member 4A and a joining member 5A.

[0040] The beam-side fixing member 4A is fixed to the exposed portion of the foundation beam 2 by the notch 3a. As shown in Figures 9(A) and 9(B), the beam-side fixing member 4A has a central flat portion on which the floor panel 3 is placed, and comprises a first leg portion 41 located on the outdoor side in a direction perpendicular to the extension direction of the foundation beam 2, and a second leg portion 42 located on the indoor side. An opposing mounting surface 42a hangs down from the indoor end of the second leg portion 42, facing the indoor side surface of the rising portion of the foundation beam 2, and a bolt 42b passed through a through hole formed in this opposing mounting surface 42a is fastened to a nut 35 embedded on the indoor side of the rising portion of the foundation beam 2, thereby fixing the beam-side fixing member 4A to the foundation beam 2.

[0041] The connecting member 5A is fixed to the central flat portion of the beam-side fixing member 4A by a bolt and nut 25 that passes through a through hole formed in the central flat portion of the beam-side fixing member 4A. The connecting member 5A also has a rising plate portion 51 that rises up opposite the side surface of the floor panel 3, and a bolt 6A is fastened through an insertion hole formed in this rising plate portion 51 to a nut 35 embedded in the side surface of the floor panel 3, which prevents the floor panel 3 from lifting up and also serves as a restraining mechanism. With this, the bolt can both prevent the floor panel from lifting up and restrict its horizontal movement.

[0042] Furthermore, in the above example, the panel floor structure 1 is equipped with a beam-side fixing member 4A, but as shown in Figure 10, it is also possible to use the beam-side fixing member 4 shown in Embodiment 1, as well as the joining member 5A.

[0043] Furthermore, in the above example, the panel floor structure 1 was a structure that supported multiple rectangular floor panels 3 on the foundation beam 2, but it is not limited to this, and as shown in Figure 11, it may also be a structure that supports multiple rectangular floor panels 3 on, for example, an H-shaped steel beam on the upper floor. In this upper floor structure, instead of anchor bolts 23, the beam-side fixing member 4 and the connecting member 5 may be fixed with bolts passed through through holes formed in the upper flange F of the H-shaped steel beam.

[0044] Although embodiments of this invention have been described above with reference to the drawings, this invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiments within the same scope as this invention, or within the equivalent scope. [Explanation of Symbols]

[0045] 1: Panel floor structure 2: Foundation beam 3: Floor panels 3a: Notch 4: Beam-side fixing member 4A: Beam-side fixing member 4a: Central side recess 4b: Lateral convex part 4c: Face part 5: Joining member 5A: Joining member 6: Rising pin 6A: Bolt 21: Foundation piles 22: Concrete floor 23: Anchor bolts 23a: Nut 24: Bolt 25: Bolts and nuts 31: Metal plate 31a: hole 31b: Opposing piece 32: Insulation 33: Plate material 35: Nut 41:1st leg 42:Second leg 42a: Opposing mounting surface 42b: Bolt 50: Bottom plate part 51: Riser plate section 52: Locking part 52a: Notch F: Upper flange

Claims

1. A panel floor structure comprising a plurality of floor panels arranged on a beam, wherein at least one adjacent floor panel has a notch that exposes the upper surface of the beam, and is characterized by comprising a beam-side fixing member fixed to the exposed portion of the beam by the notch, a joining member that joins the floor panel to the beam-side fixing member such that the floor panel does not lift up, and a restricting means that engages with the floor panel to restrict the horizontal movement of the floor panel.

2. The panel floor structure according to claim 1, wherein the joining member has a rising plate portion that rises up in close proximity to and facing the side surface of the floor panel, and a locking portion provided on the rising plate portion that locks the side surface of the floor panel so that the floor panel does not lift up, while the beam-side fixing member is equipped with a rising pin as the regulating means, and the rising pin is inserted into the lower surface side of the floor panel.

3. The panel floor structure according to claim 2, characterized in that the upper portion of the rising plate is located above the locking portion and is inclined such that the upper portion moves further away from the side surface of the floor panel.

4. The panel floor structure according to claim 2, wherein the floor panel has a metal plate on the side surface, and the locking portion fits inside a hole formed in the metal plate located at the locking portion.

5. The panel floor structure according to claim 4, wherein the locking portion is formed by cutting and raising a part of the rising plate portion and has a protruding shape that is sharp toward the side surface of the floor panel and has a lower edge that is substantially horizontal.

6. The panel floor structure according to claim 5, characterized in that a notch is formed on the lower edge, with the upper side being concave, and the edge of the hole in the metal plate catches on this notch.

7. The panel floor structure according to claim 2, wherein the beam-side fixing member has a fixing surface portion that is fixed to the beam and a support surface portion on which the floor panel is placed, and the support surface portion is provided with the rising pin.

8. The panel floor structure according to claim 1, wherein the joining member has a rising plate portion that rises up facing the side surface of the floor panel, and a bolt that prevents the floor panel from lifting and also serves as the regulating means is fastened through an insertion hole formed in the rising plate portion to a nut embedded in the side surface of the floor panel.

9. A floor panel used in the panel floor structure according to claim 4 or claim 5, characterized in that at least the short side surface of a rectangular plate-shaped body is covered with the metal plate, and the hole into which the locking portion is inserted is formed in the metal plate.

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