Composite floor

Abstract

To provide a composite floor having a wooden surface material and a concrete floor slab, allowing: integral installation of the wooden surface material and the concrete slab; and suspension installation of other members to be rationally arranged.SOLUTION: A composite floor 60 comprises wooden surface material 10 and a concrete floor slab 20 installed on an upper wide width surface 11 of a pair of wide width surfaces 11, 12 of the wooden surface material 10. Through holes 15 penetrating the pair of wide width surfaces 11, 12 are provided in the wooden surface material 10. A nut 30 with a female screw 32 is provided on the through hole 15. One end of a shaft member for connection 40 is screwed on an upper part of the female screw 32 of the nut 30. A part of the shaft member tor connection 40 projects above the upper wide width surface 11 to be buried in the concrete floor slab 20. One end of a shaft member for suspension 50 projecting downward from the lower wide width surface 12 of the wooden surface material 10 is screwable in a downward direction of the female screw 32 of the nut 30.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to synthetic flooring. [Background technology]

[0002] Amid the recent growing demand for reducing environmental impact and active efforts to be environmentally conscious, the construction industry has been actively developing technologies that make effective use of wood materials, and in wooden buildings and hybrid buildings that combine wood with steel or concrete (reinforced concrete (RC)), various structural components such as beams, columns, walls, and floors are made of wood. Compared to steel frames or concrete, wood is lighter, has a high specific strength, is easy to process, has excellent insulating properties, has moisture-regulating properties, and has the appearance design that comes from natural materials. As a natural material, it produces less carbon dioxide emissions and is highly effective in reducing environmental impact, making it a material that offers a variety of benefits.

[0003] When we turn our attention to floors in buildings such as apartment buildings, when floors are constructed solely from wood, such as wood surface materials, composite floors are sometimes constructed by laminating wood surface materials with concrete floor slabs in order to improve or enhance performance issues that wood faces, such as fire resistance and sound insulation. These wood surface materials are made from laminated wood such as CLT panels (CLT: Cross Laminated Timber) or solid wood.

[0004] Here, Patent Document 1 proposes a floor structure. This floor structure has an RC slab that is installed as a structural component of the structure, and a CLT panel that is installed along the underside of the RC slab, with a shear key provided between the CLT panel and the RC slab. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2022-167555 Summary of the Invention [Problem to be solved by the invention]

[0006] According to the floor structure described in Patent Document 1, CLT panels and RC slabs can be integrated using shear keys.

[0007] However, just like with ordinary concrete floor slabs, there is a demand for suspending other components such as ceiling materials and ceiling lighting and other ceiling equipment from the above-mentioned composite floor, but by providing separate measures to integrate the wooden surface material with the concrete floor slab and measures to suspend other components, the structure of the composite floor becomes complicated and it is not easy to manufacture. Therefore, a composite floor that has measures to integrate the wooden surface material with the concrete floor slab and measures to suspend other components in a rational manner is desired.

[0008] In this regard, Patent Document 1 describes how CLT panels and RC slabs are integrated using shear keys, but makes no mention of measures for suspending other components, and naturally there is no mention of measures for integrating wooden surface materials and concrete floor slabs, or of streamlining measures for suspending other components.

[0009] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a composite floor having a wooden surface material and a concrete floor slab, which has measures for integrating the wooden surface material and the concrete floor slab, and measures for suspending other components in a rational manner. [Means for solving the problem]

[0010] In order to achieve the above object, one aspect of the synthetic bed according to the present invention is: A composite floor having a wood surface material and a concrete floor slab disposed on the upper wide surface of a pair of wide surfaces of the wood surface material, The wood panel has a through hole penetrating between the pair of wide surfaces, and a nut with a female thread is disposed in the through hole; One end of a connecting shaft member is screwed onto the upper part of the female thread of the nut, and a part of the connecting shaft member protrudes above the upper wide surface and is embedded in the concrete floor slab, One end of a hanging shaft member protruding downward from the lower wide surface of the wooden surface material can be threaded onto the lower female thread of the nut.

[0011] According to this aspect, a nut with an internal thread is placed in a through hole in the wood panel, one end of a connecting shaft is threaded onto the upper part of the nut's internal thread, a portion of the connecting shaft projects above the upper wide surface and is embedded in the concrete floor slab, and one end of a suspension shaft projects downward from the lower wide surface of the wood panel and is threaded onto the lower part of the nut's internal thread. Therefore, both the connecting shaft that integrates the wood panel and the concrete floor slab and the suspension shaft that suspends other components from the composite floor are threaded onto a common nut placed in the through hole in the wood panel, resulting in a composite floor that rationally combines measures for integrating the wood panel and the concrete floor slab and measures for suspending other components. This prevents the composite floor from becoming too complex and makes it easy to manufacture. In addition, the weight of other components acting on the hanging shaft member is transmitted to the concrete floor slab via the nut and the connecting shaft member, so even if the strength of the wooden surface material is reduced due to damage, corrosion, or other causes, the hanging position can be maintained without the other hanging components falling.

[0012] Another aspect of the synthetic floor according to the present invention is A male screw is provided on the outer peripheral surface of the nut, and the male screw is embedded in the wall surface of the through hole.

[0013] According to this aspect, a male thread is provided on the outer peripheral surface of the nut and the male thread is embedded in the wall surface of the through hole, so that the nut, which is threaded onto both the joining shaft member and the hanging shaft member from above and below, can be firmly attached to the through hole.

[0014] Here, by attaching a nut having a male thread on its outer circumferential surface by screwing or hammering it into the through hole, the two can be joined together while the male thread is embedded in the wall surface of the through hole.

[0015] Another aspect of the synthetic floor according to the present invention is The outer peripheral surface of the nut and the wall surface of the through hole are bonded together with an adhesive.

[0016] According to this aspect, the outer surface of the nut and the wall surface of the through hole are bonded together via adhesive, so that the nut, which is threaded onto both the joining shaft member and the hanging shaft member from above and below, can be firmly attached to the through hole.

[0017] Another aspect of the synthetic floor according to the present invention is The nut is formed by a plate nut unit having a high nut and a plate material to which one end of the high nut is joined, and the plate material has a shaft member hole through which the joining shaft member is inserted and a fastener hole, The high nut is inserted into the through hole, the plate material is abutted against the upper wide surface, and a fastener inserted into the fastener hole fixes the plate material to the upper wide surface.

[0018] According to this aspect, by inserting the nuts that constitute the plate nut unit into the through holes and fixing the plate material that constitutes the plate nut unit to the wide upper surface of the wooden surface material via fasteners, the plate nut unit, in which both the joining shaft member and the hanging shaft member are screwed together at the top and bottom, can be firmly attached to the wooden surface material.

[0019] Another aspect of the synthetic floor according to the present invention is The nut disposed in the through hole is located above the through hole.

[0020] According to this aspect, since the nut placed in the through hole is located above the through hole, the length of the connecting shaft member that joins the wood surface material and the concrete floor slab can be made as short as possible, thereby reducing the bending moment acting on the connecting shaft member.

[0021] Another aspect of the synthetic floor according to the present invention is A recess is provided on the upper wide surface of the wood surface material, and the through hole is provided in a convex portion different from the recess on the upper wide surface, A feature of the present invention is that a portion of the concrete slab is recessed into the recess.

[0022] According to this aspect, a portion of the concrete floor slab is recessed into a recess provided on the upper wide surface of the wooden surface material, so that in addition to integrating the two parts with the connecting shaft member, a portion of the concrete floor slab acts as a shear key, making it possible to integrate the two more firmly.

[0023] In another embodiment of the synthetic floor according to the present invention, The suspension shaft member is characterized in that it is a member for suspending either a ceiling material or a ceiling device.

[0024] According to this aspect, the suspension shaft member can be used to suspend either a ceiling material or ceiling equipment, resulting in a composite floor that can be used to suspend various components. Ceiling equipment can include lighting equipment, ventilation equipment, etc. [Effects of the Invention]

[0025] As can be understood from the above explanation, the composite floor of the present invention can provide a composite floor having a wooden surface material and a concrete floor slab, in which measures to integrate the wooden surface material and the concrete floor slab and measures to suspend other components are rationalized. [Brief explanation of the drawings]

[0026] [Figure 1]FIG. 1 is a perspective view of an example of a composite floor according to an embodiment, showing a portion of the concrete floor slab broken away. [Figure 2] FIG. 10 is a perspective view of another example of a composite floor according to an embodiment, showing a portion of the concrete floor slab cut away. [Figure 3] FIG. 1 is a process diagram of an example of a method for manufacturing a synthetic floor according to an embodiment. [Figure 4] Continuing from FIG. 3, this is a process diagram of an example of a method for producing a synthetic floor according to an embodiment. [Figure 5] 5 is an enlarged view of FIG. 4, illustrating a method of placing an example of a nut in a through-hole and screwing one end of a joining shaft member into the nut. FIG. [Figure 6A] FIG. 6 is a view corresponding to FIG. 5 and is an exploded perspective view of another example of the nut. [Figure 6B] 6B is a diagram illustrating a method of forming a plate nut unit from the exploded perspective view shown in FIG. 6A, placing another example of a nut in a through-hole, and placing a bolt on the nut. FIG. [Figure 7] Continuing from FIG. 4, this is a process diagram of an example of a method for producing a synthetic floor according to an embodiment. [Figure 8] This is an oblique view showing one end of a suspension shaft member attached to a nut that constitutes a synthetic floor of the embodiment, and an example of ceiling equipment attached to the lower end of the suspension shaft member. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, a composite floor according to an embodiment will be described together with a manufacturing method thereof with reference to the accompanying drawings. Note that in this specification and drawings, substantially identical components may be designated by the same reference numerals to avoid redundant description.

[0028] [Synthetic floor according to the embodiment] An example of a composite floor according to an embodiment will be described together with a manufacturing method thereof with reference to Figures 1 to 8. Here, Figures 1 and 2 are perspective views of an example of a composite floor according to an embodiment, showing a portion of the concrete floor slab cut away. Also, Figures 3, 4, and 7 are, in that order, process diagrams of an example of a manufacturing method of a composite floor according to an embodiment. Figures 5, 6A, and 6B are enlarged views of Figure 4, illustrating a method of installing an example of a nut in a through-hole and screwing one end of a connecting shaft member into the nut. Furthermore, Figure 8 is a perspective view showing a state in which one end of a suspension shaft member is attached to a nut constituting a composite floor according to an embodiment, and an example of a ceiling device is attached to the lower end of the suspension shaft member.

[0029] The composite floor 60 shown in Figure 1 has a wooden panel 10 and a concrete floor slab 20 placed on the upper wide surface 11 of a pair of wide surfaces 11, 12 of the wooden panel 10. The concrete floor slab 20 has floor reinforcement bars 25 inside that intersect with each other.

[0030] The wooden surface material 10 in the illustrated example is made of CLT, but the wooden surface material may also be made of other materials such as LVL (Laminated Veneer Lumber) or solid wood.

[0031] The wood panel 10 has a plurality of through holes 15 that pass through the pair of wide surfaces 11, 12, a nut 30 is disposed above each through hole 15, one end of a headed bolt 40 (an example of a connecting shaft member) is threaded onto the upper part of the female thread 32 (see FIG. 3) of the nut 30, and the upper part of the headed bolt 40 protrudes above the wide surface 11 and is embedded in the concrete slab 20. In addition to the headed bolt 40 shown in the figure, threaded reinforcing bars, for example, can also be used as connecting shaft members.

[0032] By embedding a portion of the connecting shaft member 40 protruding from above the wooden surface material 10 inside the concrete floor slab 20, the wooden surface material 10 and the concrete floor slab 20 can be integrated while resisting the tensile forces, shear forces, etc. acting on the connecting shaft member 40.

[0033] On the other hand, a suspension shaft member 50 is inserted below the through-hole 15 , and one end of the suspension shaft member 50 is screwed into the lower part of the female thread 32 of the nut 30 .

[0034] The hanging shaft member 50, one end of which is threaded into the lower part of the female thread 32 of the nut 30, protrudes downward from the lower wide surface 12 of the wooden panel 10, and is designed so that a ceiling device 70 (see Figure 8) or a ceiling material (not shown) can be hung from the lower end 51 of the hanging shaft member 50.

[0035] According to the composite floor 60, a nut 30 having a female thread 32 is arranged in a through hole 15 provided in the wood surface material 10, one end of a connecting shaft member 40 is screwed onto the upper part of the female thread 32 of the nut 30, a part of the connecting shaft member 40 protrudes upward from the upper wide surface 11 and is embedded in the concrete floor slab 20, and one end of a hanging shaft member 50 protrudes downward from the lower wide surface 12 of the wood surface material 10 below the female thread 32 of the nut 30 can be screwed freely, so that both the connecting shaft member 40 that integrates the wood surface material 10 and the concrete floor slab 20 and the hanging shaft member 50 that suspends other members from the composite floor 60 are screwed onto a common nut 30 arranged in the through hole 15 of the wood surface material 10. This allows for the formation of a composite floor 60 that is rationally provided with a mechanism for integrating the wooden surface material 10 and the concrete floor slab 20 (connecting shaft members 40) and a mechanism for suspending other components (suspension shaft members 50). This prevents the structure of the composite floor 60 from becoming complicated, making it easier to manufacture.

[0036] In addition, by attaching a nut 30 above the through hole 15 and having a portion of the connecting shaft member 40 protrude from the nut 30 beyond the upper wide surface 11 of the wooden surface material 10 and embedding it in the concrete floor slab 20, the length of the connecting shaft member 40 can be made as short as possible, and the bending moment acting on the connecting shaft member 40 can be reduced.

[0037] The composite floor 60A shown in Figure 2 differs from the composite floor 60 in that it has alternating convex portions 13 (convex strips) and concave portions 14 (concave strips) on the upper wide surface 11 of the wooden surface material 10A, the convex portions 13 have through holes 15, and part of the concrete floor slab 20A (convex portions 27 (convex strips)) extends into the concave portions 14 of the wooden surface material 10A.

[0038] According to the composite floor 60A, a portion of the concrete floor slab 20A (protrusion 27) fits into the recess 14 provided on the wide surface 11 above the wood surface material 10A, so that in addition to integrating the two using the connecting shaft member 40, the protrusion 27 of the concrete floor slab 20A acts as a shear key, making it possible to integrate the two more firmly.

[0039] Next, an example of a method for manufacturing a composite floor will be described with reference to Figures 3, 4, and 7, and an example of a nut to be installed in a through-hole in a wooden surface material will be described with reference to Figures 5, 6A, and 6B. Here, Figure 3 etc. will be described focusing on one through-hole 15 provided in the wooden surface material, but as shown in Figure 1 etc., since multiple through-holes 15 are provided in the wooden surface material 10, the same method will be applied to all of the through-holes 15.

[0040] In the method of manufacturing a composite floor, first, as shown in FIG. 3, a through hole 15 is formed in the wood surface material 10 so as to penetrate between the pair of wide surfaces 11, 12.

[0041] Next, a nut 30 is placed above the through hole 15 and fixed to the wall surface of the through hole 15. In the illustrated example, the nut 30 is placed so that the upper end of the nut 30 is flush with the upper wide surface 11 of the wood surface material 10.

[0042] Next, as shown in FIG. 4, the lower end of the headed bolt 40 is screwed into the nut 30, and the upper end of the headed bolt 40 is made to protrude above the wide surface 11.

[0043] 5, the nut 30 has a male thread 34 on its outer circumferential surface, and the nut 30 is fixed to the through hole 15 by driving or screwing the nut 30 into the through hole 15 in the X1 direction, while embedding the male thread 34 in the wall surface of the through hole 15. Next, the lower part of the headed bolt 40 is screwed into the female thread 32 of the nut 30 in the X2 direction, thereby achieving the mounting state shown in FIG.

[0044] As another example of a nut, as shown in Figures 6A and 6B, a plate nut unit 30A may be used, which has a high nut 35 and a nut-attached plate material equipped with a nut 37 whose female thread is connected to an axial member hole 36a of the plate material 36, and one end of the high nut 35 is welded to the plate material 36.

[0045] The plate material 36 has multiple (four in the illustrated example) fastener holes 36b, and as shown in Figure 6B, the high nut 35 is inserted into the through hole 15 in the X3 direction, the plate material 36 is abutted against the wide surface 11 of the wooden surface material 10, and wood screws 38 (an example of a fastener) are screwed in the X4 direction through each fastener hole 36b to fix the plate nut unit 30A and the wooden surface material 10.

[0046] Also, although not shown in the figures, a high nut having an outer shape complementary to that of the through hole 15 may be inserted into the through hole 15, and the high nut and the wall surface of the through hole 15 may be fixed together by bonding them together with an adhesive.

[0047] Nuts 30 or plate nut units 30A are attached to all of the through holes 15, and the lower ends of the connecting shaft members 40 are screwed into the nuts 30 or plate nut units 30A. Then, floor reinforcement 25 is arranged above the wide surface 11 of the wooden surface material 10, concrete is poured, and the concrete is allowed to harden to form the concrete floor slab 20. As shown in Figure 7, the upper parts of the connecting shaft members 40 that protrude upward from the wide surface 11 of the wooden surface material 10 are embedded inside the concrete floor slab 20, and a composite floor 60 is produced in which the wooden surface material 10 and the concrete floor slab 20 are integrated.

[0048] The composite floor 60 may be a precast composite floor manufactured in a factory, or a composite floor in which concrete is poured on-site and the concrete floor slab 20 is constructed. However, in the case of a precast composite floor, it is only necessary to install the composite floor on-site, which has the advantage of improving the workability of the building and ensuring the quality of the concrete floor slab 20 with high precision.

[0049] As shown in Figure 8, at the construction site, a composite floor 60 is installed on a building frame (horizontal frame) not shown, and a portion of the suspension shaft member 50 is inserted into the through-hole 15 in the X5 direction from the inside of the room below, and the upper end of the suspension shaft member 50 is screwed below the nut 30 above the through-hole 15, thereby fixing the suspension shaft member 50 to the nut 30.

[0050] By attaching ceiling equipment 70 such as lighting equipment to the lower end 51 of the hanging shaft member 50 that protrudes downward from the broad surface 12 below the wooden surface material 10, the ceiling equipment 70 can be suspended from the composite floor 60 via the hanging shaft member 50.

[0051] Here, the other member suspended by the suspension shaft member 50 may be an air conditioning device, a ceiling material, etc. in addition to the lighting equipment shown in the figure. Here, the ceiling material includes a ceiling underlayment material, a ceiling surface material, a louvered ceiling, etc.

[0052] The present invention is not limited to the configurations shown here, and other embodiments may be possible in which other components are combined with the configurations described in the above embodiments. In this regard, the present invention can be modified within the scope of the present invention, and can be appropriately determined depending on the application form. [Explanation of symbols]

[0053] 10, 10A: Wood surface material 11: Upper broad surface (wide surface) 12: Lower broad surface (wide surface) 13: Convex part 14: Recess 15:Through hole 20, 20A: Concrete floor slab 25: Floor line 27: Convex 30: Nut 30A: Plate nut unit 32: Female thread 34: Male thread 35: High nut 36: Board material 36a: Shaft member hole 36b: Fastener hole 37: Nut 38: Fastener (wood screw) 40: Joint shaft member (headed bolt) 50: Hanging shaft member 51: Bottom edge 60, 60A: Synthetic floor 70: Ceiling equipment

Claims

1. A composite floor having a wood surface material and a concrete floor slab disposed on the upper wide surface of a pair of wide surfaces of the wood surface material, The wood panel has a through hole penetrating between the pair of wide surfaces, and a nut with a female thread is disposed in the through hole. One end of a connecting shaft member is screwed onto the upper part of the female thread of the nut, and a part of the connecting shaft member protrudes above the upper wide surface and is embedded in the concrete floor slab, A composite floor characterized in that one end of a hanging shaft member protruding downward from the lower wide surface of the wooden surface material can be freely screwed onto the lower female thread of the nut.

2. 2. The synthetic floor according to claim 1, wherein a male thread is provided on the outer peripheral surface of the nut, and the male thread is embedded in the wall surface of the through hole.

3. 2. The synthetic floor according to claim 1, wherein the outer peripheral surface of the nut and the wall surface of the through hole are bonded together with an adhesive.

4. The nut is formed by a plate nut unit having a high nut and a plate material to which one end of the high nut is joined, and the plate material has a shaft member hole through which the joining shaft member is inserted and a fastener hole, 2. The composite floor of claim 1, wherein the high nut is inserted through the through hole, the plate is abutted against the upper wide surface, and a fastener passing through the fastener hole secures the plate to the upper wide surface.

5. 2. The synthetic floor according to claim 1, wherein the nut disposed in the through hole is located above the through hole.

6. A recess is provided on the upper wide surface of the wood surface material, and the through hole is provided in a convex portion different from the recess on the upper wide surface, A composite floor according to any one of claims 1 to 5, characterized in that a portion of the concrete floor slab is recessed into the recess.

7. 6. A synthetic floor according to claim 1, wherein the suspension shaft member is a member for suspending either a ceiling material or ceiling equipment.

Images