Synthetic Bed

Abstract

To make the displacement between the ends of plates adjacent to each other inconspicuous in a synthetic floor formed by integrating the plates made of wood-based material and a concrete slab.SOLUTION: A synthetic floor 20 comprises a plurality of plates 42 formed using wood-based materials, a concrete slab 30 provided on the plates 42 adjacent to each other and integrated with the plates 42, a rod-shaped member (rail 44) arranged between end portions of the plates 42 adjacent to each other along the end portions, and a connecting member 46 that is fixed to the upper portion of the rod-shaped member, embedded in the concrete slab 30, and connects the plates 42 adjacent to each other.SELECTED DRAWING: Figure 2

Description

[Technical field]

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

[0002] The following Patent Document 1 describes a method for constructing a slab that integrates concrete with a casting formwork used when pouring the concrete. Adjacent casting formworks are arranged with their end faces in close contact with each other. The casting formwork is formed by alternately laminating reinforcement fibers such as glass fiber and carbon fiber and cement mortar so that it does not deform due to the pouring pressure of the concrete. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-285961 A Summary of the Invention [Problem to be solved by the invention]

[0004] If high-strength materials are used for the casting formwork, such as the material described in Patent Document 1, deformation due to the pouring pressure of concrete can be suppressed. On the other hand, if materials with lower strength per unit volume compared to these materials, such as wood materials, are used for the casting formwork, adjacent casting formwork may bend separately and their ends may shift vertically, damaging the aesthetic appearance.

[0005] Taking into consideration the above-mentioned facts, the present invention aims to make the misalignment between the ends of adjacent boards less noticeable in a composite floor formed by integrating boards made of wood material with a concrete slab. [Means for solving the problem]

[0006] The composite floor of claim 1 comprises a plurality of planks formed using wood materials, a concrete slab provided on adjacent planks and integrated with the planks, The top surface does not protrude from the concrete slab. The adjacent plate materials Along the longitudinal direction The structure comprises a rail arranged between the end faces along the end faces, and a connecting member fixed to the rail and the plate material, embedded in the concrete slab, and connecting adjacent plate materials to each other.

[0007] In the composite flooring of claim 1, a rod-shaped member is disposed between the ends of the planks formed from wood material. The rod-shaped member is disposed along the ends of the planks. Furthermore, a connecting member is fixed to the upper part of the rod-shaped member to connect the adjacent planks to each other.

[0008] In other words, adjacent plate materials are connected by connecting members with the rod-shaped member sandwiched between them. As a result, even if the plate materials are bent due to the weight of the concrete slab, the misalignment of the ends is less noticeable compared to when adjacent plate materials are directly connected to each other. The composite floor of claim 2 comprises a plurality of boards made of wood material, a concrete slab provided on adjacent boards and integrated with the boards, a rail disposed along the end faces of the adjacent boards, and a connecting member fixed to the rail and the boards and embedded in the concrete slab to connect the adjacent boards. The connecting member has a central portion fixed to the upper surface of the rail using a bolt, and both ends fixed to adjacent plate materials, respectively, to connect the plate materials.

[0009] The synthetic bed of claim 3 is the synthetic bed of claim 1 or 2, rail A hanging device is attached to the

[0010] Claim 3 In the composite floor, a suspender is attached to the rod-shaped member. This allows equipment, piping, ceiling materials, etc. to be suspended from the composite floor. This simplifies the structure below the composite floor compared to a structure in which separate members are provided for attaching the suspender. This makes it easy to install and less likely to impair the aesthetic appearance.

[0011] The synthetic bed of claim 4 is the synthetic bed of claim 3, rail The hanging tool is formed in a slidable rail shape.

[0012] Claim 4 In the composite floor of the above, the hanging tool can be slid while attached to the rod-shaped member, which increases the degree of freedom in the layout of the items hung by the hanging tool. The composite floor of claim 5 is a composite floor described in any one of claims 1 to 4, wherein the rail comprises a main body and a flange formed at the lower end of the main body, protruding horizontally away from the main body, and having an end folded upward, and a gap is formed between the folded-back portion of the flange and the main body. Effect of the Invention

[0013] According to the present invention, in a composite floor formed by integrating boards made of wood material with a concrete slab, misalignment between the ends of adjacent boards can be made less noticeable. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a cross-sectional view showing a synthetic floor according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a partially enlarged cross-sectional view showing a detailed configuration of a synthetic floor according to an embodiment of the present invention. [Diagram 3] FIG. 11 is a cross-sectional view showing a modified example of the rail in the synthetic floor according to the embodiment of the present invention. [Figure 4] FIG. 1 is a cross-sectional view showing a modified example in which the boards in a synthetic floor according to an embodiment of the present invention are formed using wood material and precast concrete. [Diagram 5] FIG. 11 is a cross-sectional view showing another modified example of a synthetic floor according to an embodiment of the present invention, in which the boards are formed using wood material and precast concrete. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, a synthetic floor according to an embodiment of the present invention will be described with reference to the drawings. Components indicated by the same reference numerals in each drawing are the same components. However, unless otherwise specified in the specification, each component is not limited to one, and may be present in multiple numbers. In addition, explanations of configurations and reference numerals that overlap in each drawing may be omitted. Note that the present invention is not limited to the following embodiments, and may be implemented by making appropriate modifications, such as omitting a configuration or replacing it with a different configuration, within the scope of the purpose of the present invention.

[0016] <Synthetic floor> As shown in Fig. 1, a composite floor 20 according to an embodiment of the present invention is a slab in which a concrete slab 30 and a wooden floor board 40 are integrally formed. The composite floor 20 is placed inside a building and spanned across beams (e.g., beams 12 and 14) supported by columns (not shown).

[0017] The beams across which the composite floor 20 is spanned can be H-shaped steel beams 12 shown on the left side of the page in Fig. 1, wooden beams 14 shown on the right side of the page, or reinforced concrete beams (not shown), and the type of structure is not particularly limited. In this embodiment, a case where the composite floor 20 is spanned across the beams 12 and 14 will be described.

[0018] In this specification, the left-right direction of the paper in Fig. 1 is referred to as the X direction, and the front-back direction of the paper is referred to as the Y direction. The X direction and the Y direction are directions that are approximately perpendicular to each other. In Fig. 2 described later, the left-right direction of the paper coincides with the Y direction, and the front-back direction of the paper coincides with the X direction.

[0019] (Concrete slab) The concrete slab 30 forming the composite floor 20 is formed by embedding slab reinforcement 32 in concrete 34. The slab reinforcement 32 is formed with top reinforcement 32A, bottom reinforcement 32B, and lattice reinforcement 32C. The lattice reinforcement 32C is formed in a wave shape with amplitude in the vertical direction, and connects the top reinforcement 32A and the bottom reinforcement 32B.

[0020] The slab reinforcement 32 is manufactured, for example, in a factory by welding the lattice reinforcement 32C to the top reinforcement 32A and the bottom reinforcement 32B, and is delivered to the construction site of the building. In this embodiment, the slab reinforcement 32 is placed on the beams 12, 14 via separators S1, S2.

[0021] In addition, the multiple bottom reinforcements 32B can be connected to each other using connecting reinforcements 32D. This allows the slab reinforcements 32 to be arranged across the surface of the concrete slab 30.

[0022] The concrete 34 is poured using the wooden floorboards 40 described below as formwork (disposable formwork). By pouring the concrete 34 while the wooden floorboards 40 are supported by shoring (not shown), a composite floor is formed in which the concrete slab 30 and the wooden floorboards 40 are integrated.

[0023] If the wooden floorboards 40 are fixed to the slab reinforcement 32, the concrete 34 can be poured without using shoring. Also, shoring can be omitted by bridging the wooden floorboards 40 across the beams 12 and 14. These construction methods can be selected as appropriate.

[0024] (wooden floorboards) As shown in FIG. 2, the wooden floor board 40 is formed to include a board material 42, a rail 44, and a connecting member 46.

[0025] The boards 42 are formed using CLT (Cross Laminated Timber). As the boards 42, in addition to CLT, LVL (Laminated Veneer Lumber), laminated timber, plywood, solid wood, etc. may be used. A plurality of boards 42 are arranged in the Y direction, and rails 44 are arranged between each of the boards 42.

[0026] The rails 44 are an example of a rod-shaped member in the present invention, and are disposed between ends of the plate materials 42 adjacent to each other in the Y direction and along the ends of the plate materials 42. The rails 44 are disposed along the end faces of the adjacent plate materials 42 in the X direction while contacting the end faces.

[0027] In this embodiment, the end face of the plate material 42 along the X direction is an end face along the longitudinal direction of the plate material 42, but the end face of the plate material 42 along the X direction may also be an end face along the short direction of the plate material 42.

[0028] Rail 44 is formed by combining steel channel members 44A, 44B whose upper flanges (upper side when assembled to wooden floorboard 40) are longer than the lower flanges. By welding the upper flanges of channel members 44A, 44B together, rail 44 is formed with engagement groove 44C formed between the lower flanges.

[0029] The groove width of the engagement groove 44C can be adjusted by adjusting the overlap width of the upper flanges of the channels 44A and 44B. That is, a variety of shapes can be obtained using the same parts.

[0030] It is preferable that the channel members 44A and 44B are formed so that the bending rigidity in the longitudinal direction of the rail 44 is greater than the bending rigidity in the longitudinal direction of the plate member 42. This makes it possible to suppress bending of the plate member 42.

[0031] A through hole is formed in the upper portion of the rail 44, i.e., in each of the upper flanges of the channel members 44A and 44B. The shank of the bolt B1 passes through this through hole, and the threaded portion of the shank protrudes above the rail 44. In addition, the bolt head of the bolt B1 is welded to the channel member 44B.

[0032] The thickness of the rail 44 is approximately the same as the thickness of the plate material 42. The longitudinal dimension of the rail 44 can be set appropriately. When a plurality of rails 44 are arranged side by side in the longitudinal direction (X direction), the rails 44 may be arranged with their end faces butted against each other or with the end faces spaced apart from each other.

[0033] It is not necessary to use a combination of two channel members 44A and 44B as the rail 44. For example, lip channel steel with an engagement groove may be used as the rail material, or an aluminum extrusion may be used. By using such prefabricated members, the processing work for the rail can be reduced.

[0034] A connecting member 46 is fixed to the upper part of the rail 44. The connecting member 46 is formed using a steel angle bar, and a through hole is formed in the center of the piece of the connecting member 46 that faces the rail 44. The connecting member 46 is fixed to the rail 44 by inserting the above-mentioned bolt B1 into this through hole and screwing a nut onto the bolt B1.

[0035] In addition, through holes are formed at both ends of the piece of the connecting member 46 that faces the rail 44. These through holes are for inserting the shanks of the screws T1. With the plate materials 42 arranged on both sides of the rail 44, the connecting member 46 and the plate materials 42 are fixed by driving the screws T1. In this way, the rail 44 and the plate materials 42 are connected via the connecting member 46.

[0036] The other piece of the connecting member 46 is positioned to protrude upward. The bottom reinforcement 32B of the slab reinforcement 32 is placed on this piece. When fixing the wooden floorboard 40 to the slab reinforcement 32 as described above, the connecting member 46 and the bottom reinforcement 32B are fixed to each other. The connecting member 46 and the bottom reinforcement 32B can be fixed to each other by welding them to each other or by fastening them to each other using fastening bars (not shown).

[0037] <Suspension structure> A bolt B2 serving as a suspender is attached to the rail 44. The bolt B2 has a bolt head diameter larger than the groove width of the engagement groove 44C in the rail 44. This makes it difficult for the bolt B2 to fall off the rail 44.

[0038] It is preferable to attach the bolt B2 to the rail 44 before the wooden floor board 40 is integrated with the concrete slab 30. Since the diameter of the bolt head is larger than the groove width of the engagement groove 44C, it may be difficult to attach the bolt B2 to the rail 44 after the wooden floor board 40 is integrated with the concrete slab 30.

[0039] However, if the longitudinal dimension of the rail 44 is made shorter than the longitudinal dimension of the plate material 42, the bolt B2 can be attached to the rail 44 at any time. In this case, the bolt B2 is inserted from below into a portion where the rail 44 is not placed (the gap between the plate materials 42), and then slid laterally (in the X direction) to position the bolt head inside the rail 44. This allows the bolt B2 to engage with the engagement groove 44C.

[0040] Alternatively, when a plurality of rails 44 are arranged in the longitudinal direction, the end faces of the rails 44 may be spaced apart from each other, so that the bolt B2 can be engaged with the engagement groove 44C in a similar manner.

[0041] The bolt B2, while engaged with the engagement groove 44C, can slide along the longitudinal direction (X direction) of the rail 44. In addition, the bolt B2 can be fixed to the rail 44 by screwing a nut onto the bolt B2. In other words, the bolt B2 can be fixed at any position in the X direction.

[0042] In Fig. 2, the bolt B2 is shown to have a length sufficient to screw in a nut, but the length of the bolt B2 is arbitrary. If the bolt B2 is formed to have a long length, it is easy to use the bolt B2 to suspend a duct, ceiling material, lighting fixture, etc.

[0043] 2, the rail 50 can be fixed to the rail 44 via a bolt B2 and a nut. The rail 50 may have any shape, but for example, the rail 44 may have a shape in which the bolt B1 is omitted. The bolt B3 can also be slidably attached to the rail 50.

[0044] It is preferable that the rail 50 is fixed to a plurality of rails 44. In this way, the rail 50 is supported at two or more points.

[0045] <Action and Effects> In a composite floor 20 according to an embodiment of the present invention, as shown in Fig. 2, rails 44 serving as rod-shaped members are disposed between the ends of planks 42 formed from a wood material (CLT). The rails 44 are disposed along the ends of the planks 42. Also, connecting members 46 are fixed to the upper portions of the rails 44, connecting adjacent planks 42 to each other.

[0046] That is, adjacent plate materials 42 are connected to each other by connecting members 46 with rails 44 sandwiched between them. As a result, even if plate materials 42 are deflected by the weight of the concrete slab 30, the misalignment of the ends is less noticeable compared to when adjacent plate materials 42 are directly connected to each other.

[0047] Furthermore, by making the bending rigidity of the rail 44 in the longitudinal direction greater than the bending rigidity of the plate material 42 in the longitudinal direction, the deflection of the plate material 42 due to the weight of the concrete slab 30 can be reduced.

[0048] This makes it possible to make even less noticeable the misalignment between the ends of adjacent plate materials 42. In addition, since the deflection of the plate materials 42 is reduced, leakage of slag of fresh concrete from between the plate materials 42 can be suppressed.

[0049] Furthermore, in the synthetic floor 20 according to the embodiment of the present invention, the rails 44 are fitted with bolts B2 as suspenders. This allows equipment, piping, ceiling materials, and the like to be suspended from the synthetic floor 20. This simplifies the structure below the synthetic floor 20 compared to a structure in which separate members are provided for mounting suspenders. This makes it easy to install and less likely to impair the aesthetic appearance.

[0050] In addition, since equipment and the like can be suspended from the rails 44, there is no need to perform hole drilling or other processing on the plate material 42 to suspend equipment and the like from the plate material 42. This makes it possible to suppress cross-sectional loss of the synthetic floor 20. This makes it possible to suppress a decrease in the structural performance of the synthetic floor 20. Also, it is possible to suppress the leakage of slag from the perforated parts.

[0051] Furthermore, the bolt B2 can be slid laterally while attached to the rail 44. This allows for greater freedom in the layout of the articles suspended by the bolt B2.

[0052] Furthermore, in the synthetic floor 20 according to the embodiment of the present invention, the rail 50 is fixed to the rail 44 by the bolt B2. This rail 50 extends in a direction intersecting with the rail 44. The "intersecting direction" includes a direction substantially perpendicular to the rail 44 as well as any other direction.

[0053] As a result, the sliding direction of the bolt B2 is limited to the X direction, but the bolt B3 can be fixed at any position on a plane. In other words, by using the bolt B2, the rail 50, and the bolt B3 in combination, the degree of freedom in the layout of the articles can be further increased.

[0054] Furthermore, in the composite floor 20 according to the embodiment of the present invention, the connecting member 46 is formed using an angle bar. One side of the connecting member is fixed to the board material 42, and the other side protrudes upward. This allows the shear force to be transmitted between the concrete slab 30 and the wooden floor board 40. In other words, the connecting member 46 acts as a shear key, thereby increasing the shear resistance of the composite floor 20.

[0055] It is possible to run wiring such as cables inside the rails 44, 50. This allows cables to be routed without being exposed even if no ceiling material is installed below the synthetic floor 20.

[0056] In addition, it is not necessary to attach the bolts B2, B3 or alternative hanging devices to the rails 44, 50. For example, by using duct rails or the like as the rails 44, 50, lighting fixtures and the like can be directly hung. Furthermore, it is not necessary to use the rail 50, and it may be omitted.

[0057] <Other embodiments> As in the case of rail 52 shown in Fig. 3, a rail having flanges 52A protruding on both sides may be used as the rod-shaped member of the present invention. Flange 52A is formed at the lower end of rail 52 by protruding in a direction away from rail 52 (X direction) and then folding back upward. An end of plate material 42 is placed on this flange 52A. This allows plate material 42 to be sandwiched and fixed between flange 52A and connecting member 46.

[0058] Furthermore, by forming the flange 52A, a gap V1 can be secured between the end face of the plate material 42 and the rail 52. By adjusting the width of this gap, construction errors in the plate material 42 can be absorbed.

[0059] Furthermore, a gap V2 is formed in the portion where the flange 52A is folded back upward. This gap V2 serves as a pool of slag for fresh concrete, and can suppress leakage of slag from between the plate materials 42.

[0060] It is not necessary to fix both ends of the plate material 42 to the rails (rails 44, 52). For example, one end of the plate material 42 may be placed on the beam 16. In this case, the rail 50 can be prevented from vibrating by supporting the end of the rail 50 using a support material 54 or the like.

[0061] In the present embodiment, the board 42 is formed using only wood material, but the present invention is not limited to this embodiment. For example, a board 60 shown in Fig. 4 in which a board 62 made of wood material and a concrete board 64 are integrated may be used.

[0062] As the board 62, various types of wood materials can be used, similar to the board 42. The concrete board 64 is a precast concrete board, and is formed integrally with the board 42 in a factory.

[0063] From the viewpoint of weight reduction, it is preferable to provide a hollow portion 64A (void) in the longitudinal direction of the concrete slab 64. Also, from the viewpoint of ensuring a long span, it is preferable to apply prestress to the concrete slab 64 by PC steel bars (not shown).

[0064] By using the board 60 in which the board 62 made of wood material and the concrete board 64 are integrated in this way, the volume of the concrete 34 poured on site can be reduced, and the on-site work can be reduced.

[0065] Note that a concrete plate 66 shown in Fig. 5 may be used instead of the concrete plate 64. The concrete plate 66 has ribs 66A along the longitudinal direction (X direction) formed at predetermined intervals in the Y direction. By disposing foam material 66B or the like between the adjacent ribs 66A, the amount of concrete 34 to be poured can be reduced.

[0066] In this way, the board material in the present invention may be one that uses only wood materials (for example, board material 42) or one that combines wood materials with concrete (for example, board material 62). In addition, the concrete that is combined with the wood materials may be various types of precast concrete (for example, concrete boards 64, 66).

[0067] Furthermore, in this embodiment, rails such as rails 44 and 52 are used as the rod-shaped members, but the embodiment of the present invention is not limited to this. For example, a member having a female thread for screwing in a bolt may be used as the rod-shaped member. In this case, it is preferable that the female thread is formed at a predetermined interval in the longitudinal direction of the rod-shaped member. In this way, the present invention can be embodied in various forms. [Explanation of symbols]

[0068] 20 Synthetic floor 30 Concrete slab 42 Board material 44 Rail (rod-shaped member) 46 Connecting member 52 Rail (rod-shaped member) 60 Board material B2 Bolt (hanging device)

Claims

1. A plurality of boards formed using a wood material; a concrete slab provided on each of the adjacent plate members and integrated with the plate members; A rail is disposed between end faces of the adjacent plate members along the longitudinal direction thereof, the end faces being such that the upper surfaces of the rails do not protrude from the concrete slab; a connecting member that is fixed to the rail and the plate material, embedded in the concrete slab, and connects adjacent plate materials; Composite flooring with.

2. A plurality of boards formed using a wood material; a concrete slab provided on each of the adjacent plate members and integrated with the plate members; a rail disposed between and along end faces of the adjacent plate members; a connecting member that is fixed to the rail and the plate material, embedded in the concrete slab, and connects adjacent plate materials; Equipped with The connecting member has a center portion fixed to the upper surface of the rail using a bolt, and both ends fixed to the adjacent plate materials, respectively, to connect the plate materials. synthetic floor.

3. A hanger is attached to the rail.

3. The synthetic floor according to claim 1 or 2.

4. The rail is formed in a shape that allows the hanging tool to slide. The synthetic floor of claim 3.

5. The rail is A main body portion, a flange formed at a lower end of the main body, protruding in a direction away from the main body in a horizontal direction, and having an end folded back upward; A gap is formed between the folded portion of the flange and the main body. The synthetic floor according to any one of claims 1 to 4.

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