JP2020002691A - Brace fixing metal fixture and floor support structure using brace fixing metal fixture - Google Patents

Abstract

To provide a brace fixing metal fixture which can further enhance support rigidity while being easy in construction without complicating a structure compared with a conventional floor support structure, and a floor support structure using the brace fixing metal fixture.SOLUTION: This brace fixing metal fixture is formed by integrally forming a flat plate-shaped support part having a support leg attachment hole for fixing the metal fixture to a floor support leg, vertical face parts extending substantially downward from left and right both sides of the support part, and a pair of brackets extending outward in parallel with each other along left and right directions of the support part from both side faces of the vertical face parts. Brace attachment holes are formed at the brackets, and in a state that a pair of side faces of the brake material having at least the pair of opposing side faces are gripped between the brackets, the brace material can be fixed to the pair of brackets by an anchoring tool via the brace attachment holes.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a brace fixing bracket for fixing a brace material used for increasing floor support strength, and a floor support structure using the brace fixing bracket.

Conventionally, a large supporting material is arranged on a floor slab via a floor supporting leg, and in a floor supporting structure in which a joist and a floor plate are provided on the large supporting material, between the floor supporting legs or A brace material is provided between the floor support leg and the slab as a diagonal material (see Patent Document 1).
The floor support structure disclosed in Patent Document 1 discloses a structure in which brackets are provided on the upper portions of the floor support legs and on the slab, and braces are provided between the brackets to increase the floor support strength.
In this floor support structure, the bracket for fixing the brace is provided between the support bolts constituting the column portion of the floor support leg and the receiving member for elastically supporting the large pulling material, thereby reducing the elastic support force of the floor plate. There is an advantage that the floor supporting strength can be increased without causing the floor support.

Japanese Patent No. 5112717 Utility Model Registration No. 2600408

By the way, in the above-mentioned Patent Document 1, as described above, as a brace material conventionally used as a diagonal material, a brace material having a blade plate-shaped portion such as a blade bolt at both ends is generally used. Reference 2).
The above-mentioned brace material is used by fixing the blade-like portions at both ends thereof to bolts made of a flat plate with bolts.
At present, when the inventors need to improve the earthquake-resistant structure, the inventors have conducted intensive studies with the aim of further increasing the support strength than the conventional floor support structure in which the blade-shaped portion is fixed to a flat plate brequette. The invention has led to the invention of a brace fixing bracket capable of further increasing the supporting strength without complicating the structure as compared with the floor supporting structure of the above, and further increasing the supporting strength, and a floor supporting structure using the brace fixing bracket. Was.

The brace fixing bracket according to the present invention includes a flat support portion having a support leg mounting hole for fixing to a floor support leg, and a vertical surface portion extending substantially vertically downward from both left and right sides of the support portion. A pair of brackets extending outwardly and in parallel from both sides of each vertical surface portion and further along the left-right direction of the support portion, and a brace mounting hole is provided in the bracket, With the pair of side surfaces of the brace material having at least a pair of opposed side surfaces sandwiched between the brackets, the brace material can be fixed to the pair of brackets by a fastener through the brace mounting holes. It is characterized by having been constituted in.
In the above-mentioned brace fixing bracket, a plurality of brace mounting holes can be arranged in a matrix on each bracket.
Further, a flat reinforcing connecting plate for connecting the left and right brackets on the same side of the brace fixing bracket may be further provided.
Further, the floor support structure according to the present invention is a floor support structure in which a brace material is attached between a specific floor support leg and a base surface among a plurality of floor support legs arranged side by side on the base surface. The leg is composed of a U-shaped, L-shaped or flat-shaped receiving member for mounting and supporting the large pulling material, and a column supporting the large pulling material together with the receiving member. An upper brace fixing bracket comprising the above-mentioned brace fixing bracket is fixed therebetween, and a lower brace fixing having a bottom plate portion and a bracket having a pair of brace mounting holes extending upward from both sides of the bottom plate portion on the base surface. The bracket is fixed, and between the brackets of the upper brace fixing bracket and between the brackets of the lower brace fixing bracket, the pair of side faces at both ends of the brace material having at least a pair of opposing side faces are respectively held. In the state, the brace member, characterized by comprising fixed to a pair of brackets by fastening members via a brace mounting hole of each bracket.
In the floor support structure described above, the upper brace fixing bracket is fixed to the floor support leg so that its bracket is positioned in a direction orthogonal to the longitudinal direction of the large pulling material, and the lower brace fixing bracket is mounted on a base surface. May be fixed at a predetermined position in a direction orthogonal to the longitudinal direction of the large attracting material.


Further, in the floor support structure, the upper brace fixing bracket is fixed to the floor supporting leg so that a bracket thereof is located along a longitudinal direction of the large pulling material, and the lower brace fixing bracket is mounted on a base surface. It may be fixed at a predetermined position in the same direction as the longitudinal direction of the large attracting material.
Further, in the floor support structure, an angle between at least one side of the bracket of the lower brace fixing bracket and a horizontal plane may be 60 ° or less.
Further, the angle between both sides of the bracket of the lower brace fixing bracket and the horizontal plane may be different. In this case, for example, the angle between one side and the horizontal plane of the bracket of the lower brace fixing bracket may be 45 °, and the angle between the other side and the horizontal plane may be 60 °.

The brace fixing bracket according to the present invention includes a flat support portion having a support leg mounting hole for fixing to a floor support leg, and a vertical surface portion extending substantially vertically downward from both left and right sides of the support portion. A pair of brackets extending outwardly and in parallel from both sides of each vertical surface portion and further along the left-right direction of the support portion, and a brace mounting hole is provided in the bracket, With the pair of side surfaces of the brace material having at least a pair of opposed side surfaces sandwiched between the brackets, the brace material can be fixed to the pair of brackets by a fastener through the brace mounting holes. Therefore, it is possible to use a material having a pair of side surfaces, such as high-strength square steel, H-shaped steel, C-shaped steel, and round steel, as a brace material, and support the floor. Degree can be increased. Further, since the brace fixing bracket according to the present invention can fix the pair of side surfaces of the brace material between the two brackets, as compared with the case where the blade plate portion is fixed to one bracket with bolts. And the strength at the connecting portion of the brace material is increased. Further, in the brace fixing bracket according to the present invention, the support portion is formed in a flat plate shape, and the support leg mounting hole is provided, so that the support member is attached between the receiving member of the large support member and the support pillar on the floor support leg. The brace material can be fixed below the receiving member, so that the receiving member can elastically support the large drawing material. Even in this case, the supporting strength of the floor can be increased while maintaining the elastic supporting force. Furthermore, a material having a pair of side surfaces, such as square steel, can be used as the brace material without special processing, so that the cost can be reduced.
Also, by providing a plurality of brace mounting holes in a matrix on each bracket, the brace mounting holes face the side surfaces of the brace material no matter what angle the brace material is arranged between the brackets of the brace fixing bracket. Since it is configured so that the angle at which the brace material is fixed can be freely selected, construction becomes easy.
Further, by further providing a flat reinforcing connecting plate for connecting the left and right brackets on the same side of the brace fixing bracket, the strength of the bracket in the brace fixing bracket can be increased.
The floor support structure according to the present invention is a floor support structure for attaching a brace material between a specific floor support leg and a base surface among a plurality of floor support legs arranged side by side on the base surface, wherein the floor support leg is A U-shaped, L-shaped, or flat-shaped receiving member for mounting and supporting the large pulling material, and a column supporting the large drawing material together with the receiving member, between the receiving member and the column. An upper brace fixing bracket composed of the brace fixing bracket is fixed, and a lower brace fixing bracket having a bracket having a bottom plate portion and a pair of brace mounting holes extending upward from both sides of the bottom plate portion on the base surface. The pair of side faces at both ends of a brace material having at least a pair of opposed side faces are respectively fixed between the brackets of the upper brace fixing bracket and the brackets of the lower brace fixing bracket. In, the brace member, formed by fixed to a pair of brackets by fastening members via a brace mounting hole of each bracket. As described above, in the floor support structure according to the present invention, the upper brace fixing bracket and the lower brace fixing bracket each include a pair of brackets, and the pair of side surfaces of the brace material are sandwiched between the brackets of each fixing bracket. Therefore, the strength at the connecting portion of the brace material is increased as compared with the case where the blade plate portion is fixed to one bracket with bolts or the like. In addition to this, a material having a pair of side surfaces made of high-strength square steel, H-section steel, C-section steel, round steel, or the like can be used as the brace material, so that the strength of the brace material itself is high. And the floor support strength is increased.
Further, in the floor support structure, the upper brace fixing bracket is fixed to the floor support leg so that a bracket thereof is located in a direction orthogonal to a longitudinal direction of the large pulling member, and the lower brace fixing bracket is attached to a base surface. By fixing the large pulling material at a predetermined position in the direction perpendicular to the longitudinal direction of the large pulling material, it is possible to prevent the large pulling material from vibrating in the direction perpendicular to the longitudinal direction.
Further, in the floor support structure, the upper brace fixing bracket is fixed to the floor support leg so that a bracket thereof is located along a longitudinal direction of the large pulling material, and the lower brace fixing bracket is mounted on a base surface. By fixing the large attracting material at a predetermined position in the same direction as the longitudinal direction of the large attracting material, it is possible to prevent the large attracting material from vibrating in the longitudinal direction.
Further, in the floor support structure, the angle between at least one side of the bracket of the lower brace fixing bracket and a horizontal plane is 60 ° or less, so that the brace material is fixed to the lower brace fixing bracket when the brace material is fixed. It is easy to arrange the brace material at a fixed angle only by arranging it along the inclination of the bracket. This makes it possible to greatly enhance the ease of construction.
Further, the angle between both sides and the horizontal plane in the bracket of the lower brace fixing bracket is a different angle, for example, the angle between one side and the horizontal plane in the bracket of the lower brace fixing bracket is 45 °, By setting the angle between the other side and the horizontal plane to 60 °, the brace material can be easily fixed at an angle of 45 ° or 60 ° using one lower brace fixing bracket. .

It is a front view of the brace fixing bracket concerning the present invention. It is a top view of the brace fixing bracket shown in FIG. It is a bottom view of the brace fixing bracket shown in FIG. It is a perspective view of the brace fixing bracket shown in FIG. It is a figure showing an example of a floor support structure concerning the present invention. It is a partial cross-sectional enlarged view which shows the detail of the connection part of a floor support leg and an upper brace fixing bracket. It is a front view of a lower brace fixing bracket. It is a top view of the brace fixing bracket shown in FIG. It is a bottom view of the brace fixing bracket shown in FIG. It is a perspective view of the brace fixing bracket shown in FIG. FIG. 2 is a perspective view showing a brace fixing bracket and a reinforcing connection plate shown in FIG. 1. FIG. 2 is a perspective view illustrating a state in which a reinforcing connection plate is attached to the brace fixing bracket illustrated in FIG. 1.

  Hereinafter, an embodiment of a brace fixing bracket and a floor support structure using the brace fixing bracket according to the present invention will be described with reference to an embodiment shown in the accompanying drawings.

1 to 4 respectively show a front view, a plan view, a bottom view, and a perspective view of a brace fixing bracket according to the present invention.
As shown in the drawings, the brace fixing bracket 1 in this embodiment is formed by bending a single steel plate.
The brace fixing bracket 1 further includes a flat support portion 2, vertical surface portions 3, 3 extending substantially vertically downward from both left and right sides of the support portion 2, and both side surfaces of the vertical surface portions 3, 3. A pair of brackets 4, 4 extending outward and parallel to each other in the left-right direction of the support portion 2 are integrally formed by bending.
The support portion 2 is formed with support leg mounting holes 2a for fixing to floor support legs described later, and each bracket 4 has a plurality (9 in this embodiment) of brace mounting holes 5 formed in a matrix. Is formed.
The distance T between the pair of brackets 4 and 4 is sized according to the width between the pair of side surfaces in a material having at least a pair of side surfaces used as a brace material.
With the above-described configuration, the brace material can be appropriately bolted or screwed by using an arbitrary brace mounting hole 5 while holding the pair of side surfaces of the brace material sandwiched between the pair of brackets 4. It can be fixed to the pair of brackets 4 with a suitable fastener. Here, as the material having at least one pair of side surfaces, specifically, for example, steel materials such as square steel, H-shaped steel, C-shaped steel or round steel can be mentioned, and these materials are conventionally used at both ends. The strength of the brace material itself is higher than that of a brace material having a blade-like portion. Further, by fixing the brace material between the pair of brackets 4 and fixing it from both sides, the supporting strength of the connecting portion is increased as compared with the conventional brace material in which the blade-like portion is fixed to one bracket. Therefore, it is possible to increase the support strength of the entire floor support structure. Further, it is not necessary to use a brace material having a special structure in order to increase the supporting strength of the floor support structure, and a material such as a general square steel, H-shaped steel, C-shaped steel or round steel can be used. , The cost does not go up.
Furthermore, by arranging the plurality of brace mounting holes 5 in the bracket 4 in a matrix, no matter what angle the brace material is disposed between the brackets 4, at least one brace mounting hole 5 must be connected to the brace material. Since they face each other, attachment of the brace material is also facilitated.

  Hereinafter, a floor support structure using the brace fixing bracket configured as described above as an upper brace fixing bracket will be described.

FIG. 5 is a diagram showing one embodiment of the floor support structure according to the present invention, and FIG. 6 is a partially cross-sectional enlarged view showing details of a connecting portion between the floor support leg and the upper brace fixing bracket.
The floor support structure in this embodiment is:
A plurality of floor support legs 20 attached to the floor slab 10 as a base surface;
A plurality of large pull members 11 supported from below by the floor support legs 20;
A brace material 12 having one end fixed to an upper part of an arbitrary floor support leg 20 and the other end fixed to a floor slab 10;
An upper brace fixing bracket 1 for fixing the brace material 12 to the floor support leg 20;
And a lower brace fixing bracket 30 for fixing the brace material 12 to the floor slab 10.
A joist 13 is arranged on the large pulling material 12, and a floor plate (not shown) is laid on the joist 13.
The brace material used in this embodiment is also a material having at least a pair of side surfaces, and is made of, for example, a square steel, an H-shaped steel, a C-shaped steel or a round steel.

The floor support legs 20 are
A support member 24 including a cylindrical support 21, a connecting member 22 attached to an upper portion of the support 21, and a support bolt 23 fixed to the connecting member 22 in a substantially vertical direction;
A receiving member 25 fixed to an upper portion of the support bolt 23;
An elastic member 26 provided on the receiving member 25,
And a fastener 27 comprising a bolt and a nut.
The fastener 27 is a member that fastens the upper portions of both side plates of the receiving member 25 after the large attracting material 11 is fitted to the receiving member 25.
The support 21 is made of a steel cylinder, and a flat base 28 is provided at the lower end thereof.

  The receiving member 25 is formed in a U-shape in this embodiment, and a centrally formed bottom plate portion 25a is formed with a projecting hole portion 25b projecting downward by a burring process. A screw groove into which the support bolt 23 can be screwed is formed inside the portion 25b. The length of the protruding portion of the protruding hole 25b is preferably equal to or shorter than the thickness of the support portion 2 of the upper brace fixing bracket 1.

The upper brace fixing bracket 1 is fixed below the receiving member 25 in the floor support leg 20 configured as described above.
Specifically, the upper brace fixing bracket 1 fits the protruding hole 25b of the receiving member 25 into the support leg mounting hole 2a of the support 2 with the support 2 positioned on the upper side. The upper end of the support bolt 23 of the support leg 20 is screwed into the protruding hole 25b, and is fixed to the back surface of the receiving member 25 by fastening with a fastening nut 29 via a washer (no symbol).

Next, the lower brace fixing member 30 fixed to the floor slab 10 will be described.
7 to 10 show a front view, a plan view, a bottom view, and a perspective view of a lower brace fixing bracket fixed to the floor slab 10, respectively.
As shown in the drawing, the lower brace fixing bracket 30 includes a bottom plate portion 31 fixed to the floor slab 10, a pair of flange portions 32 extending upward from both sides in the front-rear direction of the bottom plate portion 31, and left and right sides of each flange portion 32. A pair of brackets 33 that extend further obliquely upward and rightward from near the center in the direction are integrally formed by bending.
Each of the brackets 33 is formed such that the angle α between the right side 33a and the horizontal line H is 45 °, and the angle β between the left side 33b and the horizontal line H is 60 °. Has a plurality (three in this embodiment) of brace mounting holes 34 formed therein.
Further, a plurality of (three in this embodiment) mounting holes 31a are also formed in the bottom plate portion 31. Through the mounting holes 31a, the lower brace fixing bracket 30 is attached to the floor slab 10 by bolts or screws. It is fixed with an appropriate fastener.
In the lower brace fixing bracket 30 configured as described above, the angle α between the right side 33a of the bracket 33 and the horizontal line H is 45 °, and the angle β between the left side 33b and the horizontal line H is 60 °. Therefore, when the brace material is arranged along the right side 33a and fixed to the bracket 33, for example, the brace material can be fixed at an angle of 45 ° to the floor slab 10, If it is arranged along the left side 33b and fixed to the bracket 33, the brace material can be fixed to the floor slab 10 at an angle of 60 °. These 45 ° and 60 ° are angles suitable for the arrangement angle of the brace material as the oblique material. Therefore, according to the lower brace fixing bracket 30 configured as described above, it is possible to easily attach the brace material at a preferable angle only by determining the fixing position of the lower brace fixing bracket 30 to the floor slab 10 in advance. And the construction becomes remarkably easy. The angle between both sides of the bracket 33 and the horizontal line in the lower brace fixing bracket 30 can be set arbitrarily. For example, the right side and the left side may have the same angle with respect to the horizontal line. , 45 ° and 60 °. Specifically, for example, the bracket 33 may be formed so that the angle between one side and the horizontal line is 30 °.

  As described above, the side surface 12a is sandwiched between the brackets 4 of the upper brace fixing bracket 1 fixed to the floor support leg 20 and between the brackets 33 of the lower brace fixing bracket 30 fixed to the floor slab 10. The brace material 12 is fixed to the brackets 4 and 33 with appropriate fastening tools such as bolts or screws through the brace mounting holes 5 and 34 with the upper end and the lower end of the brace material 12 arranged. As a result, the brace material 12 is fixed at the upper end and the lower end in a state where both side surfaces 12 a are sandwiched between the pair of brackets 4 and 33.

  In the above-described embodiment, the upper brace fixing bracket 1 is fixed to the floor support leg 20 so that the bracket 4 is positioned in a direction orthogonal to the longitudinal direction of the large pulling member 11. Vibration in which the large attracting material 11 swings in a direction perpendicular to the longitudinal direction can be prevented.

The fixing direction of the upper brace fixing bracket 1 is not limited to the present embodiment, and is fixed to the floor support leg 20 such that the bracket 4 is positioned in a direction along the longitudinal direction of the large pull material 11, for example. By fixing in this manner, vibrations in which the large attracting material 11 swings in the longitudinal direction can be prevented.
Further, in the above-described embodiment, nine brace mounting holes 5 are provided in a matrix on the bracket 4 of the upper brace fixing bracket 1, but this configuration is not limited to the present embodiment, and the brace mounting hole 5 is not limited to this embodiment. Can be set arbitrarily.
Further, in the above-described embodiment, an example is described in which the brace fixing bracket 1 and the lower brace fixing bracket 30 are formed by bending, but the method of manufacturing the brace fixing bracket 1 and the lower brace fixing bracket 30 is described in the present embodiment. Without being limited to the example, any other manufacturing method may be used, such as forming a bracket or the like for holding the brace material by welding.
Further, in the above-described embodiment, the example in which the receiving member for supporting the large pulling material in the floor support leg is formed in a U-shape, but the configuration of the floor support leg is not limited to this embodiment, and may be any shape. The receiving member may be formed in an L shape or a flat plate shape.

Further, as shown in FIGS. 11 and 12, the upper brace fixing bracket 1 may have a flat reinforcing connecting plate 6, 6 for connecting the left and right brackets 4, 4 located on the same side. The reinforcing connecting plate 6 has a brace mounting hole 7 at a position facing the brace mounting hole 5 formed in the bracket 4 when the reinforcing connecting plate 6 is mounted on the upper brace fixing bracket 1.
Thereby, the brace material 12 is fixed to the bracket 4 together with the reinforcing connection plates 6.
By fixing the left and right brackets 4 and 4 to the reinforcing connection plate 6 in this manner, the strength of the upper brace fixing bracket 1 increases, and as a result, the support strength of the brace material 12 also increases.

1 Brace fixing bracket (top)
2 Support part 2a Support leg mounting hole 3 Vertical surface part 4 Bracket 5 Brace mounting hole 6 Connection reinforcement painful 7 Brace mounting hole

10 Floor slab 11 Large pulling material 12 Brace material 12a Side of brace material

DESCRIPTION OF SYMBOLS 20 Floor support leg 21 Support base 22 Connecting member 23 Support bolt 24 Prop part

25 Receiving Member 25a Bottom Plate 25b Protruding Hole 26 Elastic Member 27 Fastener 28 Pedestal 29 Fastening Nut

30 Brace fixing bracket (lower part)
31 bottom plate part 31a mounting hole 32 flange part 33 bracket 33a right side 33b left side 34 brace mounting hole

T Distance between brackets α Angle between right side 33a of bracket 33 and horizontal line H β Angle between left side 33a of bracket 33 and horizontal line H H horizontal line

Claims (9)

A flat support having a support leg mounting hole for fixing to a floor support leg,
From the left and right sides of the support portion, a vertical surface portion extending substantially vertically downward, respectively,
A pair of brackets extending outwardly and in parallel from both sides of each vertical surface portion and further along the left-right direction of the support portion,
Providing a brace mounting hole in the bracket,
In a state where the pair of side surfaces of the brace material having at least a pair of opposing side surfaces are sandwiched between the brackets, the brace material can be fixed to the pair of brackets by a fastener via the brace mounting holes. A brace fixing bracket characterized in that it is configured as described above. The brace fixing bracket according to claim 1, wherein a plurality of brace mounting holes are arranged in a matrix on each bracket. The brace fixing device according to claim 1 or 2, further comprising a flat reinforcing connecting plate that connects the left and right brackets on the same side of the brace fixing device. In a floor support structure for attaching a brace material between a specific floor support leg and a foundation surface among a plurality of floor support legs arranged side by side on the foundation surface,
The floor support leg includes a U-shaped, L-shaped or flat plate-shaped receiving member for mounting and supporting a large pulling material, and a support portion for supporting the large pulling material together with the receiving member. Between the part and fix the upper brace fixing bracket comprising the brace fixing metal according to any one of claims 1 to 3,
On the base surface, a lower brace fixing bracket having a bracket having a pair of brace mounting holes extending upward from both sides of the bottom plate and the bottom plate is fixed.
Between the brackets of the upper brace fixing bracket and between the brackets of the lower brace fixing bracket, while holding the pair of side surfaces at both ends of the brace material having at least a pair of opposing side surfaces, A floor support structure comprising a pair of brackets fixed to a pair of brackets by fasteners through brace mounting holes of each bracket. The upper brace fixing bracket is fixed to the floor support leg so that its bracket is located in a direction perpendicular to the longitudinal direction of the large pulling material,
The floor support structure according to claim 4, wherein the lower brace fixing bracket is fixed at a predetermined position on the base surface in a direction orthogonal to the longitudinal direction of the large pulling material. The upper brace fixing bracket is fixed to the floor support leg so that its bracket is located along the longitudinal direction of the large pulling material,
The floor support structure according to claim 4, wherein the lower brace fixing bracket is fixed at a predetermined position on the base surface in the same direction as the longitudinal direction of the large pulling material. The floor support structure according to any one of claims 4 to 6, wherein an angle between at least one side of the bracket of the lower brace fixing bracket and a horizontal plane is 60 ° or less. The floor support structure according to claim 7, wherein angles between both sides of the bracket of the lower brace fixing bracket and a horizontal plane are different angles. The angle between one side and the horizontal plane of the bracket of the lower brace fixing bracket is 45 °, and the angle between the other side and the horizontal plane is 60 °. A floor support structure as described.

Images