Bed board construction

Abstract

To provide a floor slab structure that is easy to dismantle. [Solution] The floor slab structure comprises a capital 16 fixed to a column 12 and projecting outward from the column 12, a plurality of first slab members (slab members 22X) stretched between adjacent columns 12 in one direction, with their ends resting on the capital 16 and bolted together, and a plurality of second slab members (slab members 24Y) stretched between opposing first slab members in a direction perpendicular to the one direction, with their ends resting on the first slab members and bolted together.

Description

Technical Field

[0001] The present invention relates to a floor slab structure.

Background Art

[0002] The following Patent Document 1 describes a method for constructing a building frame that constructs columns and beams and places slab concrete.

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Similar to the building frame construction method shown in the above Patent Document 1, slabs formed by placing concrete on site are often integrated with columns and beams. In this case, it is difficult to disassemble the slab without damage when rebuilding the building or changing the use of the space. Therefore, it is difficult to reuse the slab.

[0005] In consideration of the above facts, an object of the present invention is to provide a floor slab structure that is easy to disassemble.

Means for Solving the Problems

[0006] The floor slab structure according to claim 1 includes a capital fixed to a column and projecting outward from the column, a plurality of first slab members spanned in one direction between adjacent columns and having ends placed on the capital and bolted thereto, and a plurality of second slab members spanned in a direction perpendicular to the one direction between the first slab members facing each other and having ends placed on the first slab members and bolted thereto.

[0007] In the slab structure of claim 1, the capital supports the first slab material, and the first slab material supports the second slab material, thereby enabling the omission of main beams and secondary beams to create a flat slab.

[0008] Furthermore, by constructing the second slab material from multiple pieces, the compressive struts of in-plane shear force acting on the floor slab can be distributed.

[0009] Furthermore, the capital and the first slab, and the first slab and the second slab are bolted together. This allows the floor slab to be constructed using dry construction methods. In addition, because the slab is divided into smaller sections by the first and second slabs, each component is easy to dismantle and reuse.

[0010] The slab structure of claim 2 is the slab structure of claim 1, wherein the second slab members are arranged spaced apart from each other, and a third slab member is provided which is stretched between the opposing second slab members in one direction, with its end resting on the second slab members and bolted together.

[0011] In the slab structure of claim 2, a second slab is spanned between the first slab members, and a third slab is spanned between the second slab members. As a result, compared to a configuration without a third slab, the compression struts are further distributed against the shear force acting on the slab.

[0012] The slab structure of claim 3 is the slab structure of claim 1 or 2, wherein a jaw portion is formed on the outer periphery of the capital on which the first slab material is placed, and a jaw portion is formed on the outer periphery of the first slab material along the one direction on which the second slab material is placed.

[0013] In the slab structure of claim 3, the first slab material and the second slab material are placed on the jaw portion, so the floor surface of the slab can be made flush. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a floor slab structure that is easy to dismantle. [Brief explanation of the drawing]

[0015] [Figure 1] (A) is a plan view showing a slab structure according to an embodiment of the present invention, and (B) is a cross-sectional view of (A) along line BB. [Figure 2] (A) is a vertical cross-sectional view showing the configuration of the capital in a slab structure according to an embodiment of the present invention, and (B) is a vertical cross-sectional view showing the joint structure between slab materials. [Figure 3] (A) is a plan view showing columns and capitals in a floor slab structure according to an embodiment of the present invention, and (B) is a view of (A) along the line BB. [Figure 4] (A) is a plan view showing a state in which a slab material is placed across a capital in a floor slab structure according to an embodiment of the present invention, and (B) is a cross-sectional view of (A) along line BB. [Figure 5] (A) is a plan view showing a state in which one slab material is placed across another slab material in a floor slab structure according to an embodiment of the present invention, and (B) is a cross-sectional view of (A) along line BB. [Figure 6] (A) is a plan view showing a modified example of a floor slab structure according to an embodiment of the present invention, and (B) is a cross-sectional view of (A) along line BB. [Modes for carrying out the invention]

[0016] Hereinafter, a floor slab structure 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 considered to be the same component. However, unless otherwise specified in the specification, each component is not limited to one, and there may be multiple such components.

[0017] Furthermore, explanations of redundant components and reference numerals in each drawing may be omitted. This disclosure is not limited to the following embodiments, and modifications can be made as appropriate within the scope of the purpose of this disclosure, such as omitting components, substituting them with different components, or combining one embodiment with various modifications.

[0018] In each drawing, the directions indicated by the arrows X and Y are directions along the horizontal plane and are perpendicular to each other. Also, the direction indicated by the arrow Z is a direction along the vertical direction (up and down direction). In each drawing, the directions indicated by the arrows X, Y, and Z shall coincide with each other.

[0019] Figs. 1(A) and (B) show a floor slab structure according to an embodiment of the present invention. This floor slab structure is a slab structure supported by columns 12. In this slab structure, slab materials 22X, 22Y, 24Y, and 26X, which will be described later, are arranged such that their upper surfaces are flush (at the same height).

[0020] In Fig. 1(A), only the horizontal construction surfaces inside four adjacent columns 12 are shown, but the same slab structure can be continuously arranged in the X direction and the Y direction.

[0021] (Column, capital) As shown in Fig. 2(A), the column 12 is formed of a square steel pipe. Stud bolts 14 are welded to the column 12. The stud bolts 14 are embedded in a concrete capital 16. Thereby, the capital 16 is fixed to the column 12.

[0022] As shown in Figs. 3(A) and (B), the capital 16 is formed in a rectangular shape in plan view, surrounds the column 12, and is arranged so as to project outward from the column 12. A jaw portion 16A is formed on the outer peripheral portion of the capital 16. The jaw portion 16A is formed by notch-cutting the outer peripheral portion and the upper surface of the capital 16 and is a horizontal plane that is recessed with respect to the upper surface of the capital 16.

[0023] (First slab material) As shown in Figs. 4(A) and (B), slab materials 22X and 22Y are spanned over the capital 16. The slab material 22X is an example of the first slab material in the present invention.

[0024] Slab material 22X is a rectangular precast concrete floor slab with its longitudinal direction aligned in one direction (X direction). Slab material 22X spans between adjacent columns 12 in the X direction. Both ends of slab material 22X in the X direction rest on the jaw portion 16A of capital 16.

[0025] Two jaw portions 22XA are formed on each of the two sides of the slab material 22X that are aligned in the X direction. The jaw portions 22XA are formed by cutting out the outer periphery and upper surface of the slab material 22X and are horizontal surfaces that are recessed relative to the upper surface of the slab material 22X.

[0026] On the other hand, the slab material 22Y is a rectangular precast concrete floor slab whose longitudinal direction is along the direction (Y direction) perpendicular to the aforementioned direction (X direction). The slab material 22Y is spanned between adjacent columns 12 in the Y direction. Both ends of the slab material 22Y in the Y direction are rested on the jaw portion 16A of the capital 16.

[0027] A jaw portion 22YA is formed on each of the two sides of the slab material 22Y along the Y direction. The jaw portion 22YA is formed by cutting out the outer periphery and upper surface of the slab material 22Y and is a horizontal plane that is recessed relative to the upper surface of the slab material 22Y.

[0028] (Second slab material) As shown in Figures 5(A) and (B), two slab members 24Y are placed across opposing slab members 22X. Slab member 24Y is an example of a second slab member in the present invention.

[0029] Slab material 24Y is a rectangular precast concrete floor slab whose longitudinal direction is aligned in a direction perpendicular to the direction (Y direction) and one direction (X direction). Two slab materials 24Y are spanned between the ends of slab materials 22X. The Y-direction ends of slab material 24Y are then rested on the jaws 22XA of slab material 22X.

[0030] Furthermore, each slab material 24Y is positioned in contact with a slab material 22Y. One side of the slab material 24Y along the Y direction rests on the jaw portion 22YA of the slab material 22Y.

[0031] A jaw portion 24YA is formed on the other side of the slab material 24Y along the Y direction. The jaw portion 24YA is formed by cutting out the outer periphery and upper surface of the slab material 24Y and is a horizontal plane that is recessed relative to the upper surface of the slab material 24Y.

[0032] (Third slab material) As shown in Figures 1(A) and (B), multiple slab members 26X are spanned across opposing slab members 24Y. Slab member 26X is an example of a third slab member in the present invention.

[0033] Slab material 26X is a rectangular precast concrete floor slab with its longitudinal direction aligned in one direction (X direction). Multiple slab materials 26X are each spanned across slab material 24Y. The X-direction ends of slab material 26X are each rested on the jaw portion 24YA of slab material 24Y.

[0034] Of the multiple slab members 26X, the slab members 26X located at both ends are positioned in contact with the slab member 22X. One side of these slab members 26X along the X direction rests on the jaw portion 22XA of the slab member 22X.

[0035] (Joining structure of slab material) As shown in Figure 2(A), the capital 16 and the slab material 22X are joined using bolts B and nuts N. The nuts N are embedded in the jaw portion 16A of the capital 16, and their upper end faces are open, allowing bolts B to be screwed in from above. Although not shown in the figure, the capital 16 and the slab material 22Y are similarly joined using bolts B and nuts N.

[0036] Similarly, as shown in Figure 2(B), slab material 22Y and slab material 24Y are joined using bolts B and nuts N. Although not shown in the illustration, slab material 22X and slab material 24Y are also joined using bolts B and nuts N.

[0037] Similarly, slab material 24Y and slab material 26X are joined using bolts B and nuts N. Although not shown in the diagram, slab material 22X and slab material 26X are also joined using bolts B and nuts N.

[0038] <Mechanism and Effects> In the slab structure according to the embodiment of the present invention, by supporting the slab material 22X on the capital 16 and supporting the slab material 24Y on the slab material 22X, a flat slab can be made without the main beams and secondary beams.

[0039] Furthermore, by constructing the slab using multiple 24Y slabs, the compressive struts of in-plane shear force acting on the floor slab can be distributed.

[0040] Furthermore, the capital 16 and slab material 22X, and the slab material 22X and slab material 24Y are joined with bolts B and nuts N, respectively. This allows the floor slab to be constructed using dry construction methods. In addition, since the slab is divided into smaller sections by slab material 22X and slab material 24Y, each component is easy to dismantle and reuse.

[0041] Furthermore, in this slab structure, slab members 24Y are spanned between slab members 22X, and slab members 26X are spanned between slab members 24Y. As a result, compared to a configuration without slab members 26X (details to be described later), the compression struts are further distributed against the shear force acting on the slab.

[0042] Furthermore, in this slab structure, a jaw portion 16A is formed on the outer periphery of the capital 16 on which the slab materials 22X and 22Y are placed. Additionally, a jaw portion 22XA is formed on the outer periphery of the slab material 22X along the X direction on which the slab material 24Y is placed. Furthermore, a jaw portion 24YA is formed on the outer periphery of the slab material 24Y along the Y direction on which the slab material 26X is placed.

[0043] In this way, since the slab materials 22X, 24Y, and 26X are placed on the jaw sections 16A, 22XA, and 24YA, respectively, the floor surface of the slab can be made flush with the surface, as shown in Figure 1(B).

[0044] <Other Embodiments> In the above embodiment, slab material 26X is spanned between slab material 24Y, but the embodiments of the present invention are not limited to this. For example, as shown in Figure 6, slab material 26X may be omitted and slab material 24Y may be arranged side by side. In this case, jaw portions may not be formed on slab material 24Y.

[0045] Furthermore, although the column 12 is made of steel in the above embodiment, the embodiments of the present invention are not limited to this. For example, the column 12 may be made of reinforced concrete. A reinforced concrete column can be formed by casting it integrally with the capital 16.

[0046] Furthermore, in the above embodiment, jaw portions 16A, 22XA, 22YA, and 24YA are formed on the capital 16 and slab materials 22X, 22Y, and 24Y, respectively, but the embodiments of the present invention are not limited to this. For example, it is not necessary to form such jaw portions.

[0047] If the jaw portion is not formed, the upper surfaces of the capital 16 and slab materials 22X, 22Y, and 24Y will not be flush. However, if a double floor is formed above these slab materials, a flush floor surface can be created.

[0048] Furthermore, although the slab materials 22X, 22Y, and 24Y are formed from precast concrete in the above embodiment, the embodiments of the present invention are not limited to this. The slab materials 22X, 22Y, and 24Y may be made of wood. The configuration of the present invention can also be applied to wooden floor slabs.

[0049] In various embodiments, the effect of easy dismantling can be obtained by joining each slab material with bolts B and nuts N. Thus, the present invention can be implemented in various forms. [Explanation of Symbols]

[0050] 12 pillars 16 Capital 16A Jaw 22X Slab material (First slab material) 22XA Jaw region 22Y Slab Material 22YA jaw area 24Y Slab Material (Second Slab Material) 24YA jaw area 26X Slab material (Third slab material)

Claims

1. A capital fixed to the column and projecting outwards from the column, Multiple first slab members are stretched across adjacent columns in one direction, with their ends resting on the capitals and bolted together; A plurality of second slab members are stretched between the first slab members facing each other along a direction perpendicular to the aforementioned one direction, with their ends resting on the first slab members and bolted together, A floor slab structure equipped with this feature.

2. The aforementioned second slab members are arranged spaced apart from each other. The structure comprises a third slab member that is stretched across the two opposing second slab members in one direction, with its end resting on the second slab members and bolted in place, The slab structure according to claim 1.

3. A jaw portion is formed on the outer periphery of the capital on which the first slab material is placed. A jaw portion is formed on the outer periphery of the first slab material along the aforementioned one direction, on which the second slab material is placed. The slab structure according to claim 1 or 2.

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