Synthesis bed

Abstract

To provide a composite floor having a wooden surface material and a concrete slab, wherein measures for integrating the wooden surface material and the concrete slab, and measures for suspending other components are rationally provided. [Solution] The composite floor 50 has a wooden surface material 10 and a concrete floor slab 20 which is arranged so as to embed the wide surface 14 and side surface 15 above the wooden surface material 10. An insert nut 30 is embedded in a frame-shaped region 21 surrounding the wooden surface material 10 of the concrete floor slab 20, and the opening 35 of the insert nut 30 faces the lower surface 22 of the frame-shaped region 21.

Description

Technical Field

[0001] The present invention relates to a composite floor.

Background Art

[0002] Recently, with the increasing demand for reducing the environmental impact and the active efforts towards environmental consideration, in the construction field, technological development that effectively utilizes wood materials has been actively carried out. In wooden buildings, hybrid buildings of wood and steel or concrete (reinforced concrete: RC), etc., various structural members such as beams, columns, walls, and floors are formed of wood materials. Wood materials are lighter than steel frames and concrete, etc., have a high specific strength, are excellent in workability, and in addition, have high heat insulation properties, a humidity control effect, and further have an aesthetic design created by natural materials. Due to being natural materials, they have a small carbon dioxide emission amount and a high effect of reducing the environmental impact load.

[0003] Here, when looking at the floor of a building such as an apartment building, when constructing the floor only with wood such as a wood surface material, in order to improve or enhance the performance that is a problem for wood such as fire resistance and sound insulation, a composite floor in which a wood surface material and a concrete floor slab are laminated may be constructed. This wood surface material is formed of, for example, laminated wood such as a CLT panel (CLT: Cross Laminated Timber), solid wood, etc.

[0004] Here, Patent Document 1 proposes a floor structure. This floor structure has an RC slab provided as a structure of a structure, and a CLT panel provided along the lower surface of the RC slab, and a shear key is provided between the CLT panel and the RC slab.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

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

[0007] Incidentally, in the case of the composite floor described above, there is a demand to suspend other components such as ceiling materials and ceiling equipment such as ceiling lighting from the composite floor, just as with general concrete floor slabs. However, by separately providing measures to integrate the wood surface material and the concrete floor slab, and measures to suspend other components, the structure of the composite floor becomes complex and manufacturing becomes difficult. Therefore, a composite floor is desired in which measures to integrate the wood surface material and the concrete floor slab, and measures to suspend other components are rationally provided.

[0008] In this regard, Patent Document 1 describes how to integrate CLT panels and RC slabs using shear keys, but it does not describe measures for suspending other members, and naturally there is no description of measures for integrating wood surface materials and concrete floor slabs, nor of rationalizing measures for suspending other members.

[0009] The present invention has been made in view of the above problems, and aims to provide a composite floor having a wooden surface material and a concrete floor slab, wherein measures for integrating the wooden surface material and the concrete floor slab and measures for suspending other members are rationally provided. [Means for solving the problem]

[0010] To achieve the aforementioned objective, one embodiment of the composite floor according to the present invention is: A composite floor comprising a wooden surface material and a concrete floor slab that is installed so as to embed the wide surface and sides above the wooden surface material, The concrete slab is characterized in that an insert nut is embedded in a frame-shaped region surrounding the wooden surface material, and the opening of the insert nut faces the lower surface of the frame-shaped region.

[0011] According to this embodiment, the wooden panel is embedded inside the concrete slab with its lower surface facing outward (downward), thereby integrating the wooden panel and the concrete slab. At the same time, insert nuts are embedded in a frame-shaped region surrounding the wooden panel in the concrete slab, with the opening of the insert nut facing the lower surface of the frame-shaped region, allowing other members to be suspended from the insert nuts through the opening. In other words, a composite floor can be formed in which measures for integrating the wooden panel and the concrete slab and measures for suspending other members are rationally provided, thereby suppressing the complexity of the composite floor structure and achieving ease of manufacture.

[0012] Furthermore, since the weight of other components acting on the suspension shaft member attached to the insert nut is transmitted to the concrete slab via the insert nut, even if the wooden surface material is damaged, corroded, or otherwise weakened, the suspended position can be maintained without causing the other suspended components to fall.

[0013] Furthermore, other embodiments of the composite floor according to the present invention are: The lower surface of the wood-based surface material and the lower surface of the frame-shaped region are flush with each other.

[0014] According to this embodiment, since the lower surface of the wooden surface material and the lower surface of the frame-shaped region are flush, it is possible to prevent the wooden surface material from protruding downwards on the interior side and narrowing the interior space when, for example, the frame-shaped region is placed on a beam.

[0015] Furthermore, other embodiments of the composite floor according to the present invention are: The lower surface of the frame-shaped region, specifically the area outside the opening, is characterized by being a mounting area that is placed on the beam.

[0016] According to this embodiment, the area outside the opening of the insert nut on the lower surface of the frame-shaped region is the mounting area that is placed on the beam, thereby preventing the flammable wood surface material from being placed on the beam, and creating a mounting structure (attachment structure) for the composite floor on a beam with excellent fire resistance. For example, when the wood surface material of the composite floor is placed on a steel beam made of H-shaped steel or the like, even if fire-resistant coating is applied to the side surface of the steel beam, it is not possible to apply fire-resistant coating to the mounting area of ​​the wood surface material on the upper surface of the steel beam, so this area becomes one that reduces fire resistance.

[0017] Therefore, this embodiment provides a composite floor that offers excellent aesthetic design on the underside of the wood-based surface material and can form an attachment structure that has excellent fire resistance performance against beams.

[0018] Furthermore, in another embodiment of the composite floor according to the present invention, The insert nut is characterized by having a flange that widens laterally at its head, and / or having male threads on its outer circumference.

[0019] According to this embodiment, the insert nut has a flange that extends laterally on its head, or a male thread on its outer circumference, which increases the bonding strength between the insert nut and the concrete floor slab, allowing for the suspension of other components that are as heavy as possible.

[0020] Furthermore, in another embodiment of the composite floor according to the present invention, The plan view shape of the aforementioned wooden surface material and the aforementioned concrete floor slab is rectangular. The aforementioned frame-shaped region has a rectangular frame shape and is provided with two pairs of opposing shaft portions. The insert nut's opening faces at least one corresponding position on a pair of shaft portions.

[0021] According to this aspect, since the openings of the insert nuts face the corresponding positions of a pair of opposing shaft portions of the rectangular frame-shaped frame region, both ends of the U-shaped suspension jig can be attached to both openings, and another member can be suspended in a stable posture by the U-shaped suspension jig.

[0022] Another aspect of the composite floor according to the present invention is characterized in that a plurality of the wooden surface materials are provided side by side at intervals, and all of the wooden surface materials are embedded in the concrete floor slab.

[0023] According to this aspect, since a plurality of wooden surface materials are provided side by side at intervals and are embedded in the concrete floor slab, a wide composite floor with the lower surfaces of the wooden surface materials facing downward can be formed without applying a wooden surface material having a large (too large) planar area.

[0024] Another aspect of the composite floor according to the present invention is a first joining form in which a recess is provided in the wide upper surface of the wooden surface material, and a part of the concrete of the concrete floor slab enters the recess to form a first shear key, or a second joining form in which a part of a shaft-shaped or plate-shaped second shear key is fixed to the wide upper surface of the wooden surface material, and the second shear key is embedded in the concrete floor slab, or a third joining form, characterized by having any one of the following: a recess is provided in the wide upper surface of the wooden surface material, a part of the concrete of the concrete floor slab enters the recess to form a first shear key, and a part of a shaft-shaped or plate-shaped second shear key is fixed to the wide upper surface of the wooden surface material, and the second shear key is embedded in the concrete floor slab.

[0025] According to this embodiment, the joint strength between the wood panel and the concrete slab can be increased by having one of the following joint configurations: a joint configuration in which a portion of the concrete of the concrete slab enters into a recess provided on the upper wide surface of the wood panel to form a first shear key; a joint configuration in which an axial or plate-shaped second shear key fixed to the upper wide surface of the wood panel is embedded in the concrete slab; or a joint configuration using both the first and second shear keys.

[0026] Furthermore, other embodiments of the composite floor according to the present invention are: The lower surface of the wood-based surface material protrudes downward from the lower surface of the frame-shaped region.

[0027] According to this embodiment, since the lower surface of the wooden panel protrudes downward from the lower surface of the frame-shaped region, multiple (for example, two) composite floors can be installed side by side, and a separate wooden panel (connecting wooden panel) can be fitted between the wooden panels that protrude downward from both, thereby integrating the two.

[0028] Furthermore, other embodiments of the composite floor according to the present invention are: Two of the aforementioned composite floors are installed side by side, and a recess is formed between the opposing sides of the wood surface material of both of them. A connecting wooden panel is provided in the recess, and the connecting wooden panel is provided with fastening holes that communicate with the insert nuts in the corresponding frame-shaped region. The connecting wooden panel is fixed by inserting fasteners through the fastening holes and the insert nuts, and the lower surfaces of the connecting wooden panel and the wooden panels on both sides thereof are flush.

[0029] According to this embodiment, a composite floor is provided in which the lower surface of the wood panel protrudes downward from the lower surface of the frame-shaped region. A connecting wood panel is placed in the recess formed between the opposing sides of the two wood panels, and fastened to an insert nut in the frame-shaped region with fasteners such as screws, bolts, etc. This allows multiple composite floors to be integrated via the connecting wood panel, thereby forming a wide composite floor. Furthermore, because the wood panel and the connecting wood panel are flush, a wide and flat wood-grain ceiling surface can be formed.

[0030] Furthermore, other embodiments of the composite floor according to the present invention are: The insert nut is characterized in that the upper part of a suspension shaft member, which suspends either a ceiling material or ceiling equipment, is attached to it.

[0031] According to this embodiment, the suspension shaft member becomes a composite floor that can suspend various components by suspending either ceiling material or ceiling equipment. Here, ceiling equipment can include lighting equipment and ventilation equipment. [Effects of the Invention]

[0032] As can be understood from the above explanation, the present invention provides a composite floor having a wood surface material and a concrete floor slab, in which measures for integrating the wood surface material and the concrete floor slab, and measures for suspending other members are streamlined. [Brief explanation of the drawing]

[0033] [Figure 1] This is a perspective view of an example of a composite floor according to the embodiment, taken from a diagonal downward angle. [Figure 2] This is a perspective view of an example of a composite floor according to the embodiment, seen from diagonally above, showing the inside of the concrete floor slab transparently. [Figure 3] This is a longitudinal cross-sectional view showing another example of a joint structure between a concrete slab and a wooden panel. [Figure 4] This is a perspective view of another example of the composite floor according to the embodiment, seen from a diagonal downward angle. [Figure 5] Figure 1 is a perspective view taken from diagonally below, showing the composite floor placed on a rectangular frame-shaped beam. [Figure 6] This is a perspective view from diagonally below of yet another example of the composite floor according to the embodiment, before its formation. [Figure 7] This is a perspective view from diagonally below showing yet another example of the composite floor according to the embodiment in a formed state. [Figure 8A] This figure shows a method for forming yet another example of a composite floor according to the embodiment shown in Figure 7. [Figure 8B] Following Figure 8A, this figure shows a method for forming yet another example of the composite floor according to the embodiment shown in Figure 7. [Figure 8C] Following Figure 8B, this figure shows another example of a method for forming the composite floor according to the embodiment shown in Figure 7. [Modes for carrying out the invention]

[0034] The composite floor according to the embodiment will be described below with reference to the attached drawings. In this specification and drawings, substantially identical components may be denoted by the same reference numerals to avoid redundant explanations.

[0035] [Composite floor according to the embodiment] An example of a composite floor according to the embodiment will be described with reference to Figures 1 to 8. Here, Figure 1 is a perspective view of an example of a composite floor according to the embodiment, viewed from diagonally below, and Figure 2 is a perspective view of an example of a composite floor according to the embodiment, viewed from diagonally above, showing the inside of the concrete floor slab transparently. Figure 3 is a longitudinal cross-sectional view showing another example of the joint structure between the concrete floor slab and the wood surface material, Figure 4 is a perspective view of another example of a composite floor according to the embodiment, viewed from diagonally below, and Figure 5 is a perspective view of the composite floor shown in Figure 1, placed on a rectangular frame-shaped beam, viewed from diagonally below. Furthermore, Figure 6 is a perspective view of yet another example of the composite floor according to the embodiment, viewed from diagonally below, before its formation, and Figure 7 is a perspective view of yet another example of the composite floor according to the embodiment, viewed from diagonally below, after it has been formed, and Figures 8A to 8C are diagrams showing the method for forming yet another example of the composite floor according to the embodiment shown in Figure 7, respectively.

[0036] The composite floor 50 shown in Figure 1 comprises a rectangular, flat wooden panel 10 in plan view, and a rectangular concrete floor slab 20 in plan view, which is arranged so as to embed the upper wide surface 14 (top surface) and side surface 15 of a pair of wide surfaces 12 and 14 of the wooden panel 10. In other words, the wooden panel 10 is housed inside a groove 23 provided in the concrete floor slab 20. The concrete floor slab 20 has intersecting floor reinforcement bars (not shown) inside.

[0037] In the illustrated example, the wood panel 10 is made of CLT, but the wood panel may also be made of other materials such as LVL (Laminated Veneer Lumber) or solid wood.

[0038] In the concrete slab 20, multiple insert nuts 30 are embedded in a frame-shaped region 21 surrounding the wooden surface material 10, with the openings 35 of the insert nuts 30 facing the lower surface 22 of the frame-shaped region 21.

[0039] More specifically, in the illustrated example, multiple (five in the illustrated example) insert nuts 30 are embedded at intervals at corresponding positions on a pair of shaft portions extending in the Y-axis direction within the frame-shaped region 21. Here, one or more insert nuts may be embedded in all four shaft portions of the frame-shaped region 21 that extend in both the Y-axis and X-axis directions.

[0040] The insert nut 30 has a nut body 31 and a flange 33 that extends laterally at its head. The flange 33 catches on the concrete slab 20, improving the pull-out resistance against downward pull-out forces acting on the insert nut 30. Here, the nut body 31 may also have a male thread (not shown) on its outer circumference, which may engage with the concrete slab 20 to improve the pull-out resistance, or an insert nut equipped with both the flange 33 shown and the male thread (not shown) may be used.

[0041] In Figure 1, the lower surface 12 of the wooden surface material 10 and the lower surface 22 of the frame-shaped region 21 of the shaft member for suspending the concrete floor slab 20 are flush. Furthermore, the area of ​​the lower surface 22 of the frame-shaped region 21 that is outside the virtual outer line L shown by the dashed line outside the opening 35 of the insert nut 30 is the mounting region 22a on which the composite floor 50 is placed on the beam.

[0042] As shown in Figures 1 and 2, in the composite floor 50, the wooden surface material 10 is embedded inside the concrete floor slab 20, thereby integrating the two.

[0043] Here, in order to increase the joint strength between the concrete slab and the wood paneling, various shear keys may be applied, as shown in Figure 3.

[0044] Specifically, multiple recesses 16 are provided on the upper surface 14 of the wooden panel 10A, and a portion of the concrete of the concrete slab 20 enters into the recesses 16 to form a first shear key 26 (first joint configuration). Furthermore, a portion of a shaft-shaped second shear key 40, made of wood screws or the like, is fixed to the upper surface 14 of the wooden panel 10A, and the second shear key 40 is embedded in the concrete slab 20A (second joint configuration).

[0045] The recess 16 may be in the form of a rectangular block-shaped groove in plan view, or it may be in the form of a long groove.

[0046] Furthermore, the second shear key may be in a form other than the axial shape shown in the illustrated example, such as a plate made of steel or the like, or a plate made of steel or the like with a through hole provided, through which a portion of the concrete passes. In addition, two second shear keys may form a pair, extending diagonally with their fixing parts to the wood surface material 10A close together, and embedded in the concrete slab 20A in a manner that inclins in a V-shape when viewed from the front, or the second shear key may be formed from a staple, and the staple may be fixed to the wood surface material 10A so as to straddle the recess 16.

[0047] The illustrated example shows a third joining configuration that includes both the first and second joining configurations, but a joining structure having only the first joining configuration or a joining structure having only the second joining configuration may also be used.

[0048] The composite floor 50A shown in Figure 4 is formed by arranging multiple (two in the illustrated example) wooden surface panels 10 at intervals 22b, with all wooden surface panels 10 embedded in a common concrete floor slab 20.

[0049] In the composite floor 50A, the area outside the outer line L of the opening 35 of the insert nut 30 in the frame-shaped region 21 of the concrete floor slab 20 is designated as the beam mounting region 22a.

[0050] The composite floor 50A makes it possible to form a composite floor of a desired size and area without applying wood surface materials with excessively large surface areas. For example, in addition to the illustrated example, there may be configurations in which three or more wood surface materials 10 are arranged at intervals in the Y-axis direction, or configurations in which multiple wood surface materials 10 are arranged at intervals in both the Y-axis direction and the X-axis direction.

[0051] As shown in Figure 5, the mounting area 22a, which is set on the outer periphery of the frame-shaped area 21 of the concrete floor slab 20 that forms the composite floor 50, is placed on the beam 80.

[0052] Figure 5 shows a configuration in which each mounting area 22a of the rectangular composite floor 50 is placed on a grid of multiple beams 80. However, other configurations are also possible, such as one in which a pair of mounting areas 22a of the composite floor 50 is placed on a pair of beams located at separate positions.

[0053] The beam in the illustrated example is, for example, a reinforced concrete beam, but it may also be a steel beam made of H-shaped steel, etc. In the latter form, the mounting area 22a of the concrete floor slab 20 of the composite floor 50 is placed on the upper flange of the H-shaped steel.

[0054] Although not shown in the diagram, with the mounting areas 22a of the two composite floors 50 placed on the beam, the two composite floors 50 can be joined on the beam by filling the gap between the ends of the two composite floors 50 placed on the beam with a filler material such as mortar. Here, it is also possible to extend a portion of the floor reinforcement from the end of the composite floor and overlap the floor reinforcement on the beam, or to wrap separate connecting reinforcement with the floor reinforcement that extends into the gap, and then fill the gap with a filler material. Furthermore, cotters can be provided at the ends of the composite floors, and the gap between the ends of the two composite floors placed on the beam can be filled with a filler material so that it enters the cotters at both ends.

[0055] In this way, by placing the mounting area 22a of the concrete floor slab 20 on the beam, the lower surface 12 of the wood panel 10 facing downwards is not placed on the beam 80. This prevents the wood panel 10, which is a combustible material, from being placed on the beam 80, and creates a mounting structure for the composite floor 50 on the beam 80 that has excellent fire resistance.

[0056] In this mounting structure, the lower surface 12 of the wood panel 10 provides excellent aesthetic appearance, and a mounting structure for the beam 80 with excellent fire resistance can be formed.

[0057] In the illustrated mounting structure, the opening 35 of the insert nut 30 faces the interior of the beam 80. The upper part of the suspension shaft member 91 is attached to the insert nut 30 by screwing or fitting through this opening 35.

[0058] Here, insert nuts 30 are embedded at corresponding positions in a pair of opposing shaft portions that form the frame-shaped region 21. The upper part of a suspension shaft member 91 is attached to each insert nut 30, and a horizontal bar 93 is placed across the lower end of each suspension shaft member 91, thereby forming a U-shaped suspension jig 95. In the illustrated example, ceiling equipment 98 such as lighting equipment is attached to the suspension jig 95.

[0059] The illustrated example shows a configuration in which two lighting fixtures 98 are attached to two U-shaped suspension jigs 95, but other components to be suspended may include not only lighting fixtures but also air conditioning equipment, ceiling materials, etc. Ceiling materials include ceiling base materials, ceiling surface materials, and louvered ceilings.

[0060] Furthermore, although the illustrated example shows other components suspended from a U-shaped suspension jig 95, other components may also be directly suspended from the suspension shaft member 91.

[0061] Thus, the composite floor 50 is formed by embedding the wooden surface material 10 inside the concrete floor slab 20 with its lower surface 12 facing outward (downward), thereby integrating the wooden surface material 10 and the concrete floor slab 20. Insert nuts 30 are embedded in a frame-shaped region 21 surrounding the wooden surface material 10 in the concrete floor slab 20, and the opening 35 of the insert nuts 30 faces the lower surface 22 of the frame-shaped region 21, allowing other members 98 to be suspended from the insert nuts 30 through the opening 35. In other words, the composite floor 50 has measures to integrate the wooden surface material 10 and the concrete floor slab 20 and measures to suspend other members 98 rationally provided, resulting in a composite floor with a simple structure that can be manufactured with good manufacturability.

[0062] Furthermore, since the weight of the other members 98 acting on the suspension shaft member 91 attached to the insert nut 30 is transmitted to the concrete floor slab 20 via the insert nut 30, even if the wooden surface material 10 is damaged, corroded, or otherwise weakened, the suspended other members 98 can be kept in their suspended position without falling.

[0063] Next, with reference to Figures 6 to 8, we will describe an example of a large composite floor (composite floor unit) formed using another example of composite floor 50B, and a method for forming it.

[0064] The composite floor 50B shown in Figure 6 differs from the composite floor 50 shown in Figure 1 in that the lower surface 12 of the wooden surface material 10 protrudes slightly downward in the Z-axis direction from the lower surface 22 of the frame-shaped region 21 of the concrete floor slab 20.

[0065] By placing the two composite floors 50B side by side 25 and leaving a gap 28 between them, a recess 18 is formed by the side 15 of the wood panel 10 protruding downwards on both sides and the frame-shaped region 21 between the two sides 15.

[0066] As shown in Figure 7, connecting wood panels 60 are placed in the formed recesses 18, making the lower surfaces 12 and 62 of both the wood panels 10 and the connecting wood panels 60 flush. In other words, the downward overhang length of the wood panels 10 in each composite floor 50B is set to a length equivalent to the thickness of the connecting wood panels 60.

[0067] In the configuration shown in Figure 7, fastening holes 64 are provided in the connecting wood panel 60 at positions corresponding to each opening 35 facing the frame-shaped region 21. A composite floor unit 70 (another example of a composite floor) is formed by inserting fasteners 65 such as screws or bolts through the insert nuts 30 of the openings 35 that correspond to each fastening hole 64.

[0068] Here, as shown in Figure 8A, a strip-shaped gasket 66 is attached to the upper surface of the connecting wood panel 60 at a position corresponding to the gap 28, and as shown in Figure 8B, when the connecting wood panel 60 is fitted into the recess 18, the gasket 66 fits into the lower part of the gap 28.

[0069] After fitting a gasket 66 into the gap 28 and inserting fasteners 65 through the corresponding fastener holes 64 and insert nuts 30 to fix the connecting wood surface material 60 to the recess 18, the composite floor unit 70 is formed by filling the gap 28 with a filler material 29 such as mortar, as shown in Figure 8C.

[0070] The connecting wood panel 60 prevents the gasket 66 from falling out while the filler material 29 is being filled. In addition, the connecting wood panel 60 hides the gasket 66, which is often conspicuous due to its black appearance, making it invisible from the outside.

[0071] In the composite floor unit 70, insert nuts 30 are provided at corresponding positions on the outside of the frame-shaped regions 21 of the two composite floors 50B. The upper part of a suspension shaft member 91 is attached to each insert nut 30, and a crossbar 93 is stretched across each suspension shaft member 91 to form a suspension jig 95. Ceiling equipment 98 is then attached to the suspension jig 95.

[0072] According to the illustrated example of the composite floor unit 70, a wide composite floor is formed by connecting multiple composite floors 50B and integrating them via a wood-based surface material 60. Since the lower surfaces 12 and 62 of both the wood-based surface material 10 and the connecting wood-based surface material 60 are flush, a wide and flat wood-grain ceiling surface can be formed.

[0073] Other embodiments may be used in which other components are combined with the configurations listed in the above embodiments, and the present invention is not limited in any way to the configurations shown herein. In this regard, modifications can be made without departing from the spirit of the present invention, and can be appropriately determined according to the application form. [Explanation of symbols]

[0074] 10,10A: Wood-based paneling 12: Bottom surface (wide surface) 14: Top surface (wide surface) 15: Side view 16: Recess 18: Recess 20,20A: Concrete slab 21: Frame-shaped area 22: Bottom surface 22a: Mounting area 22b: Interval 23: Groove 24:Top surface 25: Side view 26: First Sea Key 28: Gap 29: Filling material 30: Insert Nut 31: Nut body 33: Flange 35:Aperture 40: Second Sea Key 50,50A,50B:Synthetic floor 60: Jointing wood paneling 62: Bottom surface 64: Fastener holes 65: Fasteners 66: Gasket 70: Synthetic floor (synthetic floor unit) 80: Beam 91: Suspension shaft member 93: Horizontal bar 95: Hanging jig 98: Ceiling equipment (lighting equipment, other components) L: Outer line of insert nut (outer line)

Claims

1. A composite floor comprising a wooden surface material and a concrete floor slab that is installed so as to embed the wide surface and sides above the wooden surface material, A composite floor characterized in that, among the concrete floor slab, an insert nut is embedded in a frame-shaped region surrounding the wood surface material, and the opening of the insert nut faces the lower surface of the frame-shaped region.

2. The composite floor according to claim 1, characterized in that the lower surface of the wood surface material and the lower surface of the frame-shaped region are flush.

3. The composite floor according to claim 1, characterized in that the area of ​​the lower surface of the frame-shaped region that is outside the opening is a mounting region that is placed on the beam.

4. The composite floor according to claim 1, characterized in that the insert nut has a flange that widens laterally at its head and / or has a male thread on its outer circumference.

5. The plan view shape of the aforementioned wooden surface material and the aforementioned concrete floor slab is rectangular. The aforementioned frame-shaped region has a rectangular frame shape and is provided with two pairs of opposing shaft portions. The composite floor according to claim 1, characterized in that the opening of the insert nut faces at least one pair of corresponding positions on the shaft portion.

6. The composite floor according to claim 1, characterized in that a plurality of the aforementioned wooden surface materials are arranged side by side at intervals, and all of the aforementioned wooden surface materials are embedded in the concrete floor slab.

7. A first joining configuration is provided in which a recess is made on the upper wide surface of the aforementioned wooden surface material, and a portion of the concrete of the concrete slab enters into the recess to form a first shear key, or, A second joining configuration is provided, in which a part of a second shear key, either axial or plate-shaped, is fixed to the wide upper surface of the aforementioned wooden panel, and the second shear key is embedded in the concrete slab, or The composite floor according to claim 1, characterized in that it has one of the following third joining configurations: a recess is provided on the upper wide surface of the wood panel, a portion of the concrete of the concrete floor slab enters into the recess to form a first shear key; and a portion of the second shear key, in the shape of an axis or plate, is fixed to the upper wide surface of the wood panel, and the second shear key is embedded in the concrete floor slab.

8. The composite floor according to claim 1, characterized in that the lower surface of the wood surface material protrudes downward from the lower surface of the frame-shaped region.

9. Two composite floors according to claim 8 are installed side by side, and a recess is formed between the opposing sides of the two wood surface materials. A composite floor characterized in that a connecting wood panel is disposed in the recess, the connecting wood panel is provided with fastening holes that communicate with the insert nuts in the corresponding frame-shaped region, the connecting wood panel is fixed by inserting fasteners through the fastening holes and the insert nuts, and the lower surfaces of the connecting wood panel and the wood panels on both sides thereof are flush.

10. The composite floor according to claim 1, characterized in that the upper part of a suspension shaft member for suspending either a ceiling material or ceiling equipment is attached to the insert nut.

Images