JP7061443B2 - Reinforcing structure of diagonal material, buckling prevention member of diagonal material and reinforcement method of diagonal material - Google Patents

Description

The present invention relates to a reinforcing structure of a slanted lumber such as a cane or a brace that is diagonally arranged with respect to a column or a beam, a buckling prevention member, a reinforcing method thereof, and the like.

Conventionally, there is a method of reinforcing a structure by fixing a slanted lumber such as a cane or a brace diagonally to a structure consisting of columns and beams. By arranging such diagonal members, the rigidity of the structure can be increased.

In recent years, seismic retrofitting of structures has been promoted in consideration of the occurrence of large earthquakes. At this time, the conventional diagonal member exhibits sufficient strength against the tensile force, but may buckle when it receives a compressive force equal to or higher than a predetermined value. Therefore, a diagonal member that is stronger against the compressive force is required. However, replacing all the diagonal members requires cost and man-hours. Therefore, there is a demand for a method of reinforcing an existing diagonal member.

As a reinforcement of such a diagonal member, there is a method of fixing an outer restraining member covering the entire circumference of the brace over the entire length of the brace (Patent Document 1).

JP-A-2015-94184

However, if an outer restraining member that covers the entire circumference of the brace is used, many members are used and the mounting work is not easy. Further, due to the dimensional accuracy of the brace and the outer restraining member, it is difficult to ensure that the brace and the outer restraining member are in close contact with each other over the front surface. However, if a gap is created between the outer restraint member and the brace, the force from the brace cannot be received by the outer restraint member, so that the reinforcing effect cannot be obtained. Therefore, a structure that can surely reinforce the brace and the like with a simpler structure is required.

INDUSTRIAL APPLICABILITY The present invention has been made in view of such a problem, and has an excellent workability, a structure for reinforcing a diagonal member capable of efficiently reinforcing the diagonal member, a buckling prevention member for the diagonal member, and reinforcement of the diagonal member. The purpose is to provide a method.

In order to achieve the above-mentioned object, the first invention is a reinforcing structure of a slanted lumber arranged diagonally with respect to a column or a beam, and a pair of reinforcing members arranged along the slanted lumber and the said. A fixing bracket for fixing the reinforcing member to the diagonal member is provided, and the fixing bracket is arranged on both sides of the diagonal member and connected so as to sandwich the diagonal member, and the reinforcing member is attached to the diagonal member. It is fixed, a gap is formed between the reinforcing member and the diagonal member, the restraint member penetrates the gap from the outer periphery of the reinforcing member, and the outer surface of the diagonal member is pressed by the tip of the restraint member. Then, stress is transmitted from the diagonal member to the reinforcing member, the fixing metal fittings are arranged apart from the diagonal member , the fixing metal fittings are fixed to the respective reinforcing members, and the pair of the reinforcing members. The reinforcing member is fixed to the diagonal member by sandwiching the diagonal member and connecting the fixing metal fittings fixed to the reinforcing member so as to face each other. It is a structure.

The fixing metal fittings may be connected to each other by using bolts .

The restraining member is arranged in one direction of the diagonal member and is arranged in a direction substantially orthogonal to the one direction, and the outer surface of the diagonal member is arranged in a different direction of the diagonal member. May be pressed.

The restraining members may be arranged at a plurality of positions at predetermined intervals in the longitudinal direction of the diagonal member.

According to the first invention, since the reinforcing member is fixed to the diagonal member by connecting the fixing metal fittings arranged so as to sandwich the diagonal member, the structure is simple and the work is easy.

Further, by arranging the diagonal members so as to be sandwiched between the pair of reinforcing members, the diagonal members can be reliably reinforced.

In addition, by forming a gap between the reinforcing member and the diagonal member, even if there is a dimensional error or deformation of the diagonal member, these can be absorbed by the gap and the reinforcing member can be securely attached to the diagonal member. can. Further, even in this case, the stress can be reliably transmitted from the diagonal member to the reinforcing member by the restraining member, and the reinforcing effect can be obtained.

Further, by arranging the restraining members in two different directions, the diagonal member can be restrained from the two directions and the stress from the diagonal member can be reliably transmitted to the reinforcing member.

Further, by arranging the restraining members at a plurality of places at predetermined intervals in the longitudinal direction of the diagonal members, the buckling of the diagonal members can be suppressed by the arrangement intervals of the diagonal members.

The second invention is a buckling prevention member of a slanted lumber that is diagonally arranged with respect to a column or a beam, and is a pair of reinforcing members, a fixing metal fitting fixed to the reinforcing member at a predetermined interval, and a restraint. When the members are provided and the pair of reinforcing members are opposed to each other by sandwiching the diagonal member , the fixing metal fittings fixed to the respective reinforcing members face each other and connect the fixing metal fittings to each other. Therefore, the reinforcing member can be fixed to the diagonal member, a gap is formed between the reinforcing member and the diagonal member, and the restraining member penetrates the gap from the outer periphery of the reinforcing member. By pressing the outer surface of the diagonal member with the tip of the restraining member, stress can be transmitted from the diagonal member to the reinforcing member, and the fixing bracket is arranged apart from the diagonal member. It is a buckling prevention member for diagonal lumber.

It is desirable that the restraining member can penetrate the reinforcing member and screw the restraining member into the reinforcing member.

According to the second invention, it is possible to efficiently reinforce the existing diagonal member with excellent workability and a simple structure.

Further, by providing the restraining member, the reinforcing member can be easily attached to the diagonal member, and the stress can be reliably transmitted from the diagonal member to the reinforcing member by the restraining member, and the reinforcing effect can be obtained.

A third invention is a method for reinforcing an existing diagonal lumber that is diagonally arranged with respect to a column or a beam, and a pair of reinforcing members to which a fixing bracket is fixed along the diagonal lumber is attached to the diagonal lumber. The reinforcing member is fixed to the diagonal member by connecting the fixing metal fittings facing each other so as to sandwich the reinforcing member, a gap is formed between the reinforcing member and the diagonal member, and the outer periphery of the reinforcing member is formed. Therefore , the restraint member penetrates through the gap, the outer surface of the diagonal member is pressed by the tip of the restraint member, and the fixing metal fitting is disposed apart from the diagonal member. The method.

It is desirable that the restraining member penetrates the reinforcing member, connects the fixing metal fittings to each other, then screws the restraining member into the reinforcing member, and presses the outer surface of the diagonal member with the tip of the restraining member. ..

According to the third invention, the workability is excellent, and it is possible to efficiently reinforce the existing diagonal member.

Further, by pressing the diagonal member with the restraining member, stress is surely transmitted from the diagonal member to the reinforcing member by the restraining member, and a reinforcing effect can be obtained.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a reinforcing structure for a diagonal member, a buckling prevention member for the diagonal member, and a method for reinforcing the diagonal member, which are excellent in workability and can efficiently reinforce the diagonal member.

The figure which shows the reinforcement structure 1 of a diagonal member. (A) is a front view showing an attached state of the buckling prevention member 10, and (b) is a figure showing another attached state. It is a cross-sectional view which shows the attachment state of the buckling prevention member 10, (a) is the cross-sectional view taken along line AA of FIG. 2 (a), (b) is the cross-sectional view taken along line BB of FIG. figure. FIG. 3 is a cross-sectional view showing another mounting state of the buckling prevention member 10. FIG. 3 is a cross-sectional view showing another mounting state of the buckling prevention member 10. (A) is a cross-sectional view showing a mounting state of the buckling prevention member 10a, and (b) is a cross-sectional view showing a mounting state of the buckling prevention member 10b. The cross-sectional view which shows the attachment state of the buckling prevention member 10a.

Hereinafter, the reinforcing structure 1 of the diagonal member according to the embodiment of the present invention will be described. FIG. 1 is a front view showing a reinforcing structure 1 of a diagonal member. The reinforcing structure 1 of the slanted lumber is a reinforcing structure of the slanted lumber 7 arranged obliquely with respect to the columns 3 and the beams 5.

The diagonal member 7 is, for example, an existing brace or a cane. If the diagonal member 7 is arranged diagonally with respect to the pillar 3 and the beam 5, the arrangement is not limited to the illustrated example, and for example, only at each corner of the rectangle formed by the pillar 3 and the beam 5. It may be arranged or the lower end may be joined to the floor or the lower beam 5 (not shown) instead of the pillar 3.

A buckling prevention member 10 is fixed to the outer peripheral portion of the diagonal member 7. 2A is a front view showing a state in which the buckling prevention member 10 is attached to the diagonal member 7, and FIG. 3A is a sectional view taken along line AA of FIG. 2A, FIG. (B) is a cross-sectional view taken along the line BB of FIG. 2 (a). The reinforcing member 11 is arranged along the diagonal member 7. That is, the reinforcing member 11 is arranged on the outer periphery of the diagonal member 7 so that the axial direction of the reinforcing member 11 and the axial direction of the diagonal member 7 substantially coincide with each other.

The reinforcing member 11 may be a single body or may be divided with respect to the longitudinal direction of the diagonal member 7. For example, as shown in FIG. 2B, the reinforcing member 11 may be divided into a plurality of pieces in the longitudinal direction, and the reinforcing members 11 may be connected to each other in the longitudinal direction by the connecting member 17. By doing so, for example, even when another diagonal member 7a is connected to the intermediate portion in the longitudinal direction of the diagonal member 7, the reinforcing member 11 can be arranged while avoiding the diagonal member 7a.

As shown in FIG. 3A, the diagonal member 7 has a substantially rectangular cross-sectional shape. In the illustrated example, the diagonal member 7 is formed by joining plates so as to connect the ends of the upper and lower flange portions of the H-shaped steel. The cross-sectional shape of the diagonal member 7 is not limited to the illustrated example, and is not particularly limited to a round steel pipe, a square steel pipe, an H-shaped steel, a U-shaped or an L-shaped angle, and the like.

A pair of reinforcing members 11 are arranged above and below the diagonal member 7. In this embodiment, the reinforcing member 11 is, for example, H-shaped steel. A fixing bracket 13 is joined to the outer surface of the flange portion 12 facing the reinforcing member 11 at a position symmetrical to each other. The fixing bracket 13 is a member for fixing the reinforcing member 11 to the diagonal member 7. The fixing bracket 13 can be manufactured by any method such as casting, forging, welding assembly, and shaving.

The fixing metal fittings 13 are joined at predetermined intervals in the longitudinal direction of the reinforcing member 11, for example, by welding. The fixing bracket 13 is a substantially L-shaped member, and the flange-shaped portion 14 projects in the opposite direction to each flange portion 12 of the reinforcing member 11. A hole 23 is formed in the flange-shaped portion 14 of the fixing bracket 13.

When the web portion 8 of the reinforcing member 11 is arranged so as to face the upper and lower surfaces of the diagonal member 7, the fixing metal fittings 13 of the reinforcing member 11 are arranged on both sides of the diagonal member 7. When the diagonal member 7 is sandwiched between the pair of reinforcing members 11, the flange-shaped portions 14 of the fixing brackets 13 of the respective reinforcing members 11 face each other. At this time, the holes 23 formed in the flange-shaped portions 14 of the opposing fixing metal fittings 13 are arranged substantially in a straight line.

A bolt 19 is inserted into the hole 23, penetrates the facing flange-shaped portion 14, and is fixed by a nut 21. That is, the fixing metal fittings 13 are arranged on both sides of the diagonal member 7, and are connected so as to sandwich the diagonal member 7. The reinforcing member 11 is fixed to the diagonal member 7 by connecting the fixing metal fittings 13 fixed to the respective reinforcing members 11 so as to face each other.

The flange-shaped portions 14 of the opposing fixing metal fittings 13 do not have to be in close contact with each other. By forming a gap between the flange-shaped portions 14, it is possible to absorb the influence of height variation of the diagonal member 7 and reliably bring the reinforcing member 11 into contact with the diagonal member 7. Therefore, stress is transmitted from the diagonal member 7 to the reinforcing member 11.

On the other hand, when the diagonal member 7 is sandwiched between the pair of reinforcing members 11, the direction orthogonal to the sandwiching direction of the reinforcing member 11 (horizontal direction in FIG. 2A) is such that the inner surface of the flange portion 12 of the reinforcing member 11 is inclined. It is difficult to bring it into close contact with the side surface of the material 7. It is difficult to completely match the distance between the flange portions 12 of the reinforcing member 11 and the width of the diagonal member 7, and interference with the fillet shape of the joint portion between the web portion 8 of the reinforcing member 11 and the flange portion 12 and the like may occur. Because there is.

When a gap is formed between the flange portion 12 and the diagonal member 7 in this way, the restraining member 15 is screwed into the female threaded portion 25 penetrating the flange portion 12 as shown in FIG. 3 (b). The restraint member 15 is, for example, a bolt. By penetrating the restraint member 15 from the outer periphery of the reinforcing member 11 (flange portion 12) into the gap between the flange portion 12 and the diagonal member 7, the outer surface of the diagonal member 7 is pressed by the tip of the restraint member 15. Can be done. Therefore, stress is transmitted from the diagonal member 7 to the reinforcing member 11 via the restraining member 15.

The restraint members 15 are arranged at a plurality of locations at predetermined intervals with respect to the longitudinal direction of the diagonal member 7. That is, the diagonal member 7 is constrained by the restraining member 15 at predetermined intervals in the pressing direction of the restraining member 15 (left-right direction in FIG. 3B). In general, the longer the length of the long member, the easier it is to buckle, and the shorter the length, the less likely it is to buckle. By pressing the diagonal member 7 with the restraint member 15 at a predetermined interval, the diagonal member 7 is restrained by the length between the restraint portions of the restraint member 15. Therefore, the buckling suppressing effect similar to that of shortening the diagonal member 7 can be obtained, and the buckling of the diagonal member 7 in the relevant direction can be suppressed.

In order to obtain such an effect, it is desirable that the distance between the restraining members 15 is from 1/2 of the diagonal member 7 to the width of the diagonal member 7 or less. In the direction orthogonal to the restraining direction of the restraining member 15 (horizontal direction in FIG. 3B), the web portion 8 of the reinforcing member 11 comes into contact with the slanting member 7 over the entire length, so that the slanting member 7 is concerned. It is possible to suppress buckling in the direction.

The restraining direction by the restraining member 15 may be not only one direction (for example, the left-right direction in FIG. 3B) but also a plurality of directions. For example, as shown in FIG. 4, a female screw portion 25 may be formed on both the web portion 8 and the flange portion 12 of the reinforcing member 11, and the restraint member 15 may be screwed into each female screw portion 25. That is, the restraint member 15 is arranged in one direction of the diagonal member 7 (for example, the left-right direction in FIG. 4) and is arranged in a direction substantially orthogonal to this direction (up-down direction in FIG. 4). .. By doing so, it is possible to press the outer surfaces of the diagonal members 7 in different directions and restrain the diagonal members 7 at predetermined intervals.

In this way, by forming a gap between the reinforcing member 11 and the reinforcing member 11 over substantially the entire circumference of the diagonal member 7, buckling is prevented without being affected by deformation or dimensional error of the reinforcing member 11 or the diagonal member 7. The member 10 can be easily fixed to the diagonal member 7. Further, by arranging the restraining members 15 in a plurality of directions at predetermined intervals, buckling of the diagonal member 7 can be suppressed in any direction.

Next, a method of reinforcing the existing diagonal member 7 will be described. First, the reinforcing member 11 is arranged along the existing diagonal member 7. The fixing bracket 13 is fixed to the reinforcing member 11 in advance. The reinforcing member 11 can be fixed to the diagonal member 7 by sandwiching the diagonal member 7 between the pair of reinforcing members 11 and connecting the fixing metal fittings 13 facing each other. If the reinforcing member 11 is in contact with the diagonal member 7, a certain reinforcing effect can be obtained on the diagonal member 7 even in this state.

Further, after all the fixing metal fittings 13 are connected to each other and the reinforcing member 11 is arranged with respect to the diagonal member 7, the restraining member 15 is screwed into the reinforcing member 11 and the outer surface of the diagonal member 7 is pressed by the tip of the restraining member 15. By doing so, even if there is a gap between the reinforcing member 11 and the diagonal member 7, stress can be reliably transmitted from the diagonal member 7 to the reinforcing member 11. Therefore, the existing diagonal member 7 can be reliably reinforced and buckling can be prevented.

The reinforcing member 11 may be sandwiched from the left and right instead of being sandwiched from above and below the diagonal member 7. For example, as shown in FIG. 5, the buckling prevention member 10 may be arranged so that the diagonal member 7 is sandwiched between the web portions 8 of the reinforcing member 11 from the left and right sides of the diagonal member 7. Even in this case, it is desirable that the diagonal member 7 is restrained by the restraining member 15 in the direction orthogonal to the sandwiching direction of the pair of reinforcing members 11. Further, the restraining member 15 that penetrates the web portion 8 of the reinforcing member 11 may be arranged, and the diagonal member 7 may be restrained by the restraining member 15 from two directions orthogonal to each other.

Here, the diagonal member 7 may have a direction in which the bending rigidity is high and a direction in which the bending rigidity is low, depending on the cross-sectional shape thereof. For example, if the diagonal member 7 is an H-shaped steel, the bending rigidity in the direction parallel to the flange portion is lower than the bending rigidity in the direction orthogonal to the flange portion (the direction parallel to the web portion). In the example shown in FIG. 5, the bending rigidity of the diagonal member 7 in the left-right direction in the figure is lower than the bending rigidity in the up-down direction in the figure.

On the other hand, the reinforcing member 11 also has a direction in which the bending rigidity is high and a direction in which the bending rigidity is low. For example, as shown in FIG. 5, if the reinforcing member 11 is an H-shaped steel, the bending rigidity in the direction parallel to the flange portion 12 (left-right direction in the figure) is in the direction orthogonal to the flange portion 12 (web portion 8). It is a direction parallel to and lower than the bending rigidity in the vertical direction in the figure). In this case, it is desirable that the direction in which the bending rigidity of the diagonal member 7 is low and the direction in which the bending rigidity of the reinforcing member 11 is low are different.

For example, in the example shown in FIG. 5, the bending rigidity in the left-right direction in the figure is lower than the bending rigidity in the vertical direction in the figure orthogonal to both the diagonal member 7 and the reinforcing member 11. On the other hand, in the example shown in FIG. 3A, for example, the bending rigidity of the diagonal member 7 in the left-right direction in the figure is lower than the bending rigidity in the vertical direction in the figure, and the bending rigidity of the reinforcing member 11 in the left-right direction in the figure. Is stronger than the bending rigidity in the vertical direction in the figure. That is, the reinforcing effect of the reinforcing member 11 in the direction in which the bending rigidity of the diagonal member 7 is weak is increased. Therefore, the buckling prevention effect of the diagonal member 7 is great. As described above, it is desirable that the diagonal members 7 and the reinforcing members 11 are arranged so that the directions in which the bending rigidity is weak are not the same direction, and are orthogonal to each other, for example. The strength of the bending rigidity can be calculated from the cross-sectional coefficients for each bending direction.

Further, the cross-sectional shape of the reinforcing member 11 is not limited to the case of H-shaped steel. For example, as shown in FIG. 6A, a buckling prevention member 10a using a U-shaped reinforcing member 11 may be used. Also in this case, it is desirable to determine the sandwiching direction of the reinforcing member 11 according to the cross-sectional shape of the diagonal member 7. In this case, since the flange portion 12 of the reinforcing member 11 in the buckling prevention member 10 does not protrude vertically (or left and right) of the diagonal member 7, a more compact diagonal member reinforcing structure can be obtained.

Similarly, as shown in FIG. 6B, a buckling prevention member 10b using a reinforcing member 11 of a square steel pipe may be used. As described above, the cross-sectional shape of the reinforcing member 11 is not particularly limited, such as a square steel pipe, a U-shape or an L-shaped angle.

Further, if a sufficient reinforcing effect can be obtained, the reinforcing member 11 may be arranged only on one side instead of being sandwiched between the pair of reinforcing members 11. For example, FIG. 7 is a cross-sectional view showing a reinforcing structure when the diagonal member 7 has an L-shaped angle. The buckling prevention member 10c includes a reinforcing member 11 arranged on one side of the diagonal member 7 and a pair of fixing metal fittings 13a and 13b.

The reinforcing member 11 has a round steel pipe in cross section, and is arranged along the longitudinal direction of the diagonal member 7. The fixing metal fittings 13a and 13 are arranged at predetermined intervals with respect to the longitudinal direction of the diagonal member 7. Of the pair of fixing metal fittings 13a and 13b, one fixing metal fitting 13b is arranged on the side of the reinforcing member 11, and the other fixing metal fitting 13a is arranged so as to face the reinforcing member 11. That is, the diagonal member 7 is sandwiched between the pair of fixing brackets 13a and 13b.

The fixing bracket 13a may be joined to the reinforcing member 11, or the diagonal member 7 and the reinforcing member 11 may be sandwiched together without being joined. Further, when the fixing metal fitting 13a and the reinforcing member 11 are joined, the fixing metal fitting 13a does not have to be arranged on the entire outer circumference of the reinforcing member 11, and is divided and arranged in the vicinity of both ends of the reinforcing member 11. You may.

In this way, the diagonal member 7 can be reinforced by arranging the reinforcing member 11 along the diagonal member 7 and fixing the reinforcing member 11 to the diagonal member 7 with the fixing metal fittings 13a and 13b. Also in this case, the restraint member 15 may be used to form a gap between the diagonal member 7 and the reinforcing member 11.

As described above, according to the present embodiment, the existing diagonal member 7 can be efficiently reinforced. At this time, since the reinforcing member 11 is fixed to the diagonal member 7 by connecting the fixing metal fittings so as to sandwich the diagonal member 7, the structure is simple and the work is easy. Further, since the reinforcing member 11 does not cover the entire outer circumference of the diagonal member 7, the reinforcing member 11 having the same shape can be applied to the diagonal members 7 in a plurality of forms. Further, by sandwiching the diagonal member 7 between the pair of reinforcing members 11, the diagonal member 7 can be reliably reinforced.

Further, since the fixing brackets are connected to each other by the bolt 19 and the nut 21, welding work is not required.

Further, by forming a gap between the reinforcing member 11 and the diagonal member 7, even if a dimensional error or deformation of the diagonal member 7 occurs, the gap absorbs the gap and easily attaches the reinforcing member 11 to the diagonal member. Can be attached to 7. Further, even in this case, the stress can be reliably transmitted from the diagonal member 7 to the reinforcing member 11 by the restraining member 15, and the reinforcing effect can be obtained.

In particular, by arranging the restraining member 15 in two different directions, the diagonal member 7 can be restrained from the two directions and the stress from the diagonal member 7 can be reliably transmitted to the reinforcing member 11.

Although the embodiments of the present invention have been described above with reference to the attached drawings, the technical scope of the present invention does not depend on the above-described embodiments. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the technical ideas described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

1 ………… Reinforcing structure of diagonal lumber 3 ………… Pillar 5 ………… Beams 7, 7a ………… Slanted lumber 8 ………… Web part 10, 10a, 10b, 10c ………… Buckling prevention member 11 …… … Reinforcing member 12 ………… Flange portion 13, 13a, 13b ……… Fixing metal fitting 14 ………… Flange-shaped portion 15 ………… Restraining member 17 ………… Connecting member 19 ………… Bolt 21 ………… Nut 23… …… Hole 25 ………… Female thread

Claims (8)

It is a reinforcing structure of diagonal lumber that is arranged diagonally with respect to columns or beams.
A pair of reinforcing members arranged along the diagonal member,
A fixing bracket for fixing the reinforcing member to the diagonal member,
Equipped with
The fixing metal fittings are arranged on both sides of the diagonal member, are connected so as to sandwich the diagonal member, the reinforcing member is fixed to the diagonal member, and a gap is formed between the reinforcing member and the diagonal member. Be done,
A restraining member penetrates the gap from the outer periphery of the reinforcing member, and the tip of the restraining member presses the outer surface of the diagonal member to transmit stress from the diagonal member to the reinforcing member.
The fixing bracket is arranged apart from the diagonal member.
The fixing bracket is fixed to each of the reinforcing members.
The diagonal member is sandwiched between the pair of the reinforcing members, and the fixing metal fittings fixed to the respective reinforcing members are connected to each other so as to face each other, whereby the reinforcing member is fixed to the diagonal member. Reinforcement structure of diagonal material. The reinforcing structure for diagonal members according to claim 1 , wherein the fixing brackets are connected to each other by using bolts. The restraining member is arranged in one direction of the diagonal member and is arranged in a direction substantially orthogonal to the one direction, and the outer surface of the diagonal member is arranged in a different direction of the diagonal member. The reinforcing structure for the diagonal member according to claim 1 or 2 , wherein the diagonal member is pressed. The reinforcing structure for diagonal members according to any one of claims 1 to 3 , wherein the restraining members are arranged at a plurality of locations at predetermined intervals in the longitudinal direction of the diagonal members. A buckling prevention member for slanted lumber placed diagonally to a column or beam.
A pair of reinforcing members and
Fixing brackets fixed to the reinforcing member at predetermined intervals,
Restraint member and
Equipped with
When the pair of reinforcing members are opposed to each other by sandwiching the diagonal member , the fixing metal fittings fixed to the respective reinforcing members face each other, and the fixing metal fittings are connected to each other to connect the reinforcing member to the reinforcing member. It is possible to fix it to the diagonal material ,
A gap is formed between the reinforcing member and the diagonal member.
By penetrating the restraining member from the outer periphery of the reinforcing member into the gap and pressing the outer surface of the diagonal member with the tip of the restraining member, stress can be transmitted from the diagonal member to the reinforcing member.
The fixing bracket is a buckling prevention member for the diagonal member, characterized in that the fixing bracket is arranged apart from the diagonal member. The restraining member penetrates the reinforcing member and
The buckling prevention member for an oblique member according to claim 5 , wherein the restraining member can be screwed into the reinforcing member. It is a method of reinforcing existing diagonal lumber that is placed diagonally to columns or beams.
A pair of reinforcing members to which the fixing metal fittings are fixed are arranged along the diagonal member so as to sandwich the diagonal member.
The fixing metal fittings facing each other are connected to each other, and the reinforcing member is fixed to the diagonal member.
A gap is formed between the reinforcing member and the diagonal member.
From the outer circumference of the reinforcing member, the restraining member penetrates into the gap, and the tip of the restraining member presses the outer surface of the diagonal member.
A method for reinforcing a diagonal member, wherein the fixing bracket is arranged apart from the diagonal member. The restraining member penetrates the reinforcing member and
The method for reinforcing a diagonal member according to claim 7 , wherein the restraining member is screwed into the reinforcing member after the fixing metal fittings are connected to each other, and the outer surface of the diagonal member is pressed by the tip of the restraining member. ..

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