Building structure plate material

Abstract

To provide a building structure plate material that can be used as a member for constituting a floor in a general house while being lightweight.SOLUTION: A concrete layer (11) in which main reinforcements (2) and distribution bars (3) reinforcing a design load-bearing capacity are arranged is provided on a top surface of a wooden board (10) with a longitudinal dimension of 12 m or less and a width dimension of 2.3 m or less, into which anchor bars (1) are driven. Adhesive layers (4, 5) are provided between the top surface and the concrete layer (11). The concrete layer (11) is provided in an area excluding exposed wood board surface bands (12) that are parallel to one long side and one short side of the wooden board (10). Ends of the main reinforcements (2) and the distribution bars (3) protrude above the exposed wood board surface band (12).SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a printing plate suitable for assembling a building structure. [Background technology]

[0002] The materials used in the assembly of building structures (hereinafter referred to as "structural materials") are required to be lightweight and have improved load-bearing capacity from the viewpoints of workability and structural performance. For this reason, precast panels use lightweight aggregate to reduce weight while maintaining the same or higher load-bearing capacity as panels of the same dimensions.

[0003] In addition, the precast concrete panel disclosed in JP 2016-254740 A has a laminated structure in which an intermediate panel material selected from plywood, calcium silicate board, large flat board, flexible board, and combinations of plywood, wood, and calcium silicate board is set between first and second concrete panels without reinforcing bars, making it lighter than if the entire thickness was made of concrete. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP2016-254740A DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0005] The requirements for structural wood panels vary depending on the part of the building they are used in. When they are used as members that make up the floors of ordinary houses, they need to be able to support the expected load per floor area with beam members that are supported on two, three, or four sides, and with supports that allow the wooden board surface to be seen from below.

[0006] However, it was sometimes difficult to use conventional lightweight structural slabs as floor members for ordinary houses. For example, the precast concrete slabs with the above-mentioned laminated structure could withstand a load of 500 kg / m2 per floor area, which is expected for ordinary houses. 2 It was difficult to support the structure with beam members.

[0007] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a building construction board material which is lightweight and can be used as a member for constructing floors in ordinary houses. [Means for solving the problem]

[0008] In the architectural structure board material of the present invention, a concrete layer in which main steel bars and distribution bars are arranged to reinforce the design load-bearing capacity is provided on the top surface of a wooden board with a length of 12 m or less and a width of 2.3 m or less, into which anchor reinforcement is driven, and an adhesive layer is provided between the top surface and the concrete layer. The concrete layer is provided in an area excluding the exposed wood board surface zones parallel to one long side and one short side of the wooden board, and the ends of the main steel bars and distribution bars protrude above the exposed wood board surface zone.

[0009] The wooden board may be provided with a first or second type of mating portion on an end surface including the one long side. Effect of the Invention

[0010] The architectural construction slab material of the present invention can be used as a member for constructing floors of ordinary houses while being lightweight. [Brief description of the drawings]

[0011] [Figure 1] 1 is a perspective view showing a partially cutaway view of a building construction plate material according to the present invention. [Diagram 2] 2 is a perspective view showing the state in which the architectural construction plate materials shown in FIG. 1 are arranged side by side on a support material. FIG. [Diagram 3]1 is a perspective view showing a state in which concrete has been poured into the interfacial spaces of architectural construction plate materials arranged side by side on a support material. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] An embodiment of the present invention will be described with reference to Figures 1 to 3. Note that in Figures 1 to 3, in order to facilitate understanding of the present invention, some parts are shown exaggeratedly for the sake of convenience, and the relative dimensions between parts are not accurate.

[0013] The architectural construction board according to this embodiment has a structure in which a concrete layer 11 in which main reinforcing bars 2 and distribution bars 3 are arranged is provided on the upper surface of a wooden board 10.

[0014] The wooden board 10 has a long side dimension of 12.0 m and a short side dimension of 2.3 m. The long side dimension can be determined according to the span length of the building structure to be assembled, but for an ordinary house it is 12 m or less. On the other hand, the short side dimension can be determined taking into consideration transportation to the site where assembly work will be performed, and if it is 2.3 m or less, transportation using an ordinary vehicle will be possible.

[0015] The top surface of the wooden board 10 has been cleaned of all oil-based agents, ground clean, and anchor bars 1 have been driven into the area where the concrete layer 11 will be provided.

[0016] Known products, such as those with a circular protrusion on the head or wood screw types, can be used for the anchor bars 1. The intervals at which the anchor bars 1 are driven in are preferably 200 to 300 mm, taking into consideration the pull-out strength, bearing strength, adhesive strength between the wooden board 10 and the concrete layer 11, and the effect on the shear strength of the interface between the wooden board 10 and the concrete layer 11.

[0017] Between the top surface of the wooden board 10 and the concrete layer 11, a first adhesive layer 4 and a second adhesive layer 5 are provided.

[0018] The first adhesive layer 4 strengthens the surface of the wooden board 10, which is the permeable surface, improves the tensile shear strength, and further suppresses the drying shrinkage of the wooden board 10, thereby enhancing the adhesive strength with the concrete layer 11. The first adhesive layer 4 in this embodiment has a viscosity of 200 mPa s or more and a viscosity of 2.6 N / mm 2 Penetrating adhesive with an adhesive strength of 1.0 kg / m or more 2 The paint is applied in an amount of 100g so that the penetration depth is approximately several millimeters, and is allowed to penetrate (saturate) into the wooden board 10.

[0019] The second adhesive layer 5 has the effect of increasing the adhesive strength between the wooden board 10 and the concrete layer 11. The second adhesive layer 5 in this embodiment has a strength of 3.7 N / mm 2 A highly durable epoxy adhesive with an adhesive strength of 1.0 kg / m or more is used. 2 The adhesive strength between the wooden board 10 and the concrete layer 11 is 1.0 N / mm 2 The adhesive may be applied to the surface of the wooden board 10 using a brush, or may be sprayed using a lysine gun.

[0020] The concrete layer 11 is provided in an area excluding an exposed strip 12 of the wooden board 10 that is L-shaped in plan view and parallel to one long side and one short side of the wooden board 10.

[0021] Main reinforcing bars 2 and distribution bars 3 are arranged in the concrete layer 11. The main reinforcing bars 2 reinforce the design load-bearing capacity, and are arranged taking into consideration the load-bearing capacity shared by the wooden boards 10. In this embodiment, one layer is used, but two layers (reinforced concrete structure) may be used if necessary.

[0022] The ends of the main reinforcing bars 2 and the distribution bars 3 arranged in the concrete layer 11 protrude above the wooden board surface exposure strip 12. A joint structure is provided at the ends protruding above the wooden board surface exposure strip 12.

[0023] In this embodiment, a lap joint using a protruding reinforcing bar is used as the joint structure. Other known structures such as a gas pressure welding joint, a welded joint, and a mechanical joint can also be used as the joint structure. However, a lap joint is advantageous in shortening the construction period, and further, by using a mechanical joint such as a protruding reinforcing bar, the joint length can be shortened, the dimensions of the filling part can be shortened, and the pouring of concrete in the filling part can be minimized, thereby streamlining the construction.

[0024] Known concrete materials can be used to form the concrete layer 11, but when lightweight aggregate is used as the aggregate, it is possible to achieve a weight reduction of nearly 80% compared to when general aggregate such as crushed stone is used, and at the same time, it is possible to achieve performance equivalent to that of when general aggregate such as crushed stone is used.

[0025] Either a first or second type of mating portion is provided on the end surface of the wooden board 10, including the long side forming the edge of the wooden board surface exposure strip 12. The mating portion 13 in this embodiment is a first type formed by cutting out a portion of the wooden board surface exposure strip 12 parallel to the long side of the wooden board 10 to a predetermined thickness, and a second type formed by cutting out a portion of the back surface of the wooden board 10 overlapping with the portion of the wooden board surface exposure strip 12 parallel to the long side of the wooden board 10 to a predetermined thickness. However, there is no restriction on the type of mating portion 13, and other known types may be adopted in consideration of installation work conditions, etc.

[0026] The architectural structural plate material according to this embodiment is manufactured in a secondary product factory, and when it is used, it is transported from the secondary product factory to the construction site by a large vehicle. Then, at the construction site, it is transported by a crane or the like to the installation location where the supporting members 14 such as beams are arranged. Therefore, compared to the conventional construction method of driving anchors into wooden boards at the construction site and pouring concrete, it is possible to reduce the labor required for construction.

[0027] When installing, the architectural construction boards are placed side by side on the support material 14 with the mating parts 13 facing in the direction of mating. Then, anchor bars 1 are driven into the parts where the mating parts 13 of the exposed wood board strips 12 are mated to prevent slippage.

[0028] Next, a penetrating adhesive is applied to the surface of the exposed wooden board surface band 12, which will become the interfill portion when multiple architectural structural boards are arranged and connected, to form a first adhesive layer, and then an attachment adhesive is applied to form a second adhesive layer.After that, concrete material is poured into the interfill portion to form the interfill concrete portion 15.

[0029] The concrete material poured into the filling section should be one that will achieve the required performance within the planned period, taking into consideration the construction time. For example, if the period required to achieve the required performance is 28 days or more, normal cement should be used; if it is 7 days or more, early-strength cement; if it is 1.5 days or more, rapid-hardening cement; and if it is 3 hours or more, ultra-rapid-hardening cement should be used. [Explanation of symbols]

[0030] 1 Anchor bar 2 Main reinforcement bars 3. Distribution Reinforcement 4 First Adhesive Layer 5 Second adhesive layer 10 wood board 11 Concrete layer 12 Exposed wood panel 13 Fitting part 14 Support material 15 Filling concrete section

Claims

1. A wooden board for architectural structures having a length of 12 m or less and a width of 2.3 m or less, on whose top surface, into which anchor reinforcement is driven, a concrete layer in which main reinforcing bars and distribution bars are arranged to reinforce the design load-bearing capacity is provided, an adhesive layer is provided between the top surface and the concrete layer, the concrete layer is provided in an area excluding exposed strips of the wooden board surface parallel to one long side and one short side of the wooden board, and the ends of the main reinforcing bars and distribution bars protrude above the exposed strip of the wooden board surface.

2. 2. The architectural construction plate material according to claim 1, wherein said wooden board has a mating portion of either a first type or a second type provided on an end face of said wooden board that includes said one long side.

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