WO2016068401A1

WO2016068401A1 - Buckling-restrained brace for seismic retrofitting of steel frame structure

Info

Publication number: WO2016068401A1
Application number: PCT/KR2015/001967
Authority: WO
Inventors: 최성모
Original assignee: 서울시립대학교 산학협력단
Priority date: 2014-10-29
Filing date: 2015-02-27
Publication date: 2016-05-06
Also published as: KR101670548B1; KR20160052973A

Abstract

The present invention relates to a brace for reinforcing a steel frame structure comprising steel columns and beams of plants, fundamental facilities such as power plants or the like, and to a buckling-restrained brace for seismic retrofitting of a steel frame structure, comprising stiffeners provided to surround a core material, formed into an H-beam, so as to reinforce a weak axis of the core material and expand a cross section of the core material, thereby improving cross-sectional performance and preventing a brace plate fixing the reinforced core material from buckling even under compression. In one preferred embodiment of the present invention, the brace for reinforcing the steel frame structure comprising the steel columns and the beams comprises: the core material configured into an H-beam having a center web and flanges vertically formed at both end portions thereof; two stiffeners of which each comprise a main body having a predetermined length and a staple-shaped cross section, coupling parts formed by bending and extending both end portions of the main body in an outward direction at right angles, and reinforcing parts formed by extending the outer end portions of the coupling parts in an outward direction at right angles, wherein the stiffeners are coupled to each other from both sides of the flanges of the core material so as to surround the longitudinal center portion of the core material; a reinforcing plate formed in a plate shape having a predetermined length and thickness, and provided between the outer surface of the flange of the core material and the inner surface of the main body of the stiffener; and the brace plate comprising a plate-shaped fixing plate coupled to the beam, a vertical plate formed vertically at the fixing plate, and a coupling plate, which is formed in a plate shape having a predetermined length and thickness, having a cut slit formed by being cut up till a predetermined distance from one longitudinal end portion thereof to the longitudinal center portion thereof, wherein the cut slit is fitted into and coupled to the upper part of the vertical plate such that the coupling plate forms a predetermined angle with the fixing plate, and two coupling plates are formed to be spaced from each other at a predetermined distance so as to form one pair such that the core material is inserted among the pair of coupling plates, and the web of the core material and the vertical plate are bolt-coupled by a gusset plate.

Description

Non-buckling bracing for seismic reinforcement of steel structures

The present invention relates to braces for reinforcement of steel structures such as power plants, infrastructure, and plants, and more particularly, in braces for reinforcing steel structures consisting of steel columns and beams, reinforcing materials to surround cores formed of H-beams. It is related to the non-buckling brace for seismic reinforcement of steel structure to prevent buckling even when compressing. .

In general, steel structures have been widely used in infrastructure and plants, and structural designs have been designed to meet the conditions required by national design (earthquake) standards at the time, but they have been strengthened and improved through continuous earthquake research. The seismic design criteria are determined to install the reinforcement structure through the reinforcement design of existing facilities. Most braces are designed to be tensile, so the three equipments are large, and when subjected to compressive forces, there is a problem that the elastic buckling does not act as a brace. In addition, since most of the infrastructure and plants, such as steel structures to be reinforced during operation, there was a problem that welding work is not possible.

As a background technology of the present invention, there is a patent registration No. 1364787 "weak axis reinforced non-buckling brace" (Patent Document 1).

In the background art, "a brace for reinforcing a steel frame structure consisting of steel pillars and beams, the core material formed of H-shaped steel; c-shaped cross-section body, the reinforcement consisting of the first coupling portion of the shape of both ends of the body is bent to the outside; Is configured to engage with each other in both directions of the flange of the core to enclose the central portion in the longitudinal direction of the core, and to be introduced between the first coupling portion of the reinforcing member to be joined to each other so that the end is in contact with the longitudinal direction of the central portion of the web of the core The reinforcing member is further configured, and the auxiliary reinforcing member has a cross-sectional shape of any one of the plate type, T-type, I-type or H-type weak axis reinforcement type non-buckling brace.

However, in the background art, although the reinforcement of the brazing core is reduced, the possibility of buckling of the brazing itself is reduced, but the brazing plate connecting the brazing and the steel structure does not have a separate reinforcing member when combining with the brazing. Since the plate is not reinforced, there was a problem that buckling occurs in the bracing plate during compression.

The present invention is to solve the above problems, it is possible to fasten by bolt coupling without using a bonding method such as welding by configuring the reinforcement to surround the core formed of H-shaped steel, even during operation of steel structures such as power facilities It can be easily installed, reinforcing the weak axis of the core web and expanding the cross section of the core to improve the cross-sectional performance, so that buckling does not occur even during compression, leading to stable hysteretic behavior even under repeated loads such as earthquakes. Steel plate structure, which is a connection between core material and steel structure, which is easy to be buckled and destroyed during compression, is also constructed by adjusting the brace plate to fix the reinforced core to match the behavior of the core material. To provide non-buckling bracing for seismic reinforcement Never.

The present invention relates to a brace for reinforcing a steel structure consisting of steel pillars and beams, the core material consisting of an H-shaped steel flanged perpendicular to the central web and both ends; A main body having a C-shaped cross-section having a predetermined length, a coupling part extending at both ends of the main body bent outward at right angles, and a reinforcing part extending at an outer right angle at the outer end of the coupling part, are formed in both directions of the flange of the core material. Two reinforcements configured to be coupled to each other to surround the longitudinal center portion of the core material; A reinforcing plate formed in a plate shape having a predetermined length and thickness between the outer surface of the flange of the core and the inner surface of the main body of the reinforcing material; A fixed plate coupled to the beam in a plate shape, a vertical plate formed perpendicularly to the fixed plate, and a coupling plate having a cut length formed at one end in a longitudinal direction from a longitudinal center portion in a plate shape having a predetermined length and thickness. The incision is inserted into the upper part of the vertical plate to form a fixed angle with the fixed plate, and is formed to be spaced apart from each other by forming a pair, so that the core material is inserted between the pair of coupling plate and the coupling plate, and the web and the vertical plate of the core material To provide a non-buckling brace for seismic reinforcement of the steel structure, characterized in that consisting of; brace plate that is bolted to the plate.

In addition, to provide a non-buckling brace for seismic reinforcing steel structure, characterized in that the coupling plate and the flange of the core bolted.

In addition, the coupling plate of the brace plate is inserted in both ends of the reinforcing material, to provide a non-buckling brace for the steel structure seismic reinforcement, characterized in that the flange is formed overlapping the coupling plate and the reinforcing material and core material.

In addition, the vertical plate is to provide a non-buckling brace for the seismic reinforcement of the steel structure, characterized in that the cutting surface is formed by cutting the end coupled to the coupling plate to form a right angle with the coupling plate.

In addition, the reinforcing material is to provide a non-buckling brace for earthquake-resistant reinforcing steel structure, characterized in that formed of aluminum.

In addition, the reinforcing material is formed in the cutting surface is cut to the side in the central portion in the longitudinal direction is divided into two long first segment member and a short second segment member, the cut surface of the segmented two segment members are planar One side protrudes and one side is formed in a concave shape to provide a non-buckling brace for seismic reinforcement of the steel structure, characterized in that the first segment member and the second segment member is configured to mate with each other at the cutting surface.

The non-buckling brace for seismic reinforcement of steel structures of the present invention can be fastened by bolting without using a bonding method such as welding by constructing a reinforcement to surround the core formed of H-shaped steel, and is very easy even during operation of steel structures such as electric power facilities. It can be constructed in a simple manner, reinforcing the weak axis of the core web and expanding the cross section of the core to improve the cross-sectional performance, so that the buckling does not occur even during compression, leading to stable hysteretic behavior even under repeated loads such as earthquakes. There is a very useful effect that can be increased.

In addition, the brace plate for fixing the reinforcing core material to match the behavior of the core material buckling during compression and the brace plate, which is the connection between the core material and the steel structure, which is susceptible to compression also has a very useful effect that does not occur during compression.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.

1 is a view showing an embodiment of the installation state of the non-buckling brace for seismic reinforcement steel structure of the present invention.

2 is a cross-sectional view of the core of the present invention.

3 is a cross-sectional view taken along the line A-A of FIG.

Figure 4 is an exploded perspective view of the connection portion of the brace plate and the core of the present invention.

Figure 5a is a perspective view of the coupled state of FIG.

Figure 5b is a side cross-sectional view of the coupled state of FIG.

6A is a perspective view of another embodiment of FIG. 5A.

FIG. 6B is a side cross-sectional view of another embodiment of FIG. 5B.

7A is a perspective view of another embodiment of the reinforcement of the present invention.

7B is a plan view of another embodiment of the reinforcement of the present invention.

In the following the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the embodiments presented are exemplary for a clear understanding of the present invention is not limited thereto.

Hereinafter, the technical configuration of the present invention according to a preferred embodiment in detail.

As shown in FIG. 1, the non-buckling brace 1 of the present invention is used as a brace for reinforcing a steel structure consisting of a steel column 5 and a beam 6.

In general, in order to reinforce steel structures, such as power plants, infrastructure, and plants, it is difficult to directly reinforce unexposed columns and beams. The brace under tension can be compressed by the compressive force during an earthquake, and because the structures such as plants are pin-bonded, the only transverse resistance element is brace. In this case, steel structures such as power plants should be stopped for reinforcement and difficult to reinforce and should be reinforced during operation. Especially, steel structures such as infrastructure and plants such as power plants may cause damage to the facilities during operation. Since braces cannot be used, both braces and stiffeners must be constructed using bolted joints.

However, because the brace is designed to receive a tensile force, the large equipment, the compression buckling force caused the elastic buckling was not a role of the brace, so the seismic reinforcement non-buckling brace (1) of the steel structure of the present invention the core material (10) The reinforcement 20 is configured to reinforce, thereby increasing the cross-sectional secondary radius to reinforce to secure the compressive strength so as to form a non-buckling brace.

Non-buckling brace 1 for the earthquake-resistant reinforcement of the steel structure is a brace plate 40 is configured at the end of the core material 10, so that the brace plate 40 is connected to the steel beam (6).

The core material 10 may be reinforced with the reinforcing material 20 to secure the compressive strength in the core material 10 itself, but because buckling may occur in the brace plate 40 that fixes the core material 10 to the steel structure, In the present invention, the brace plate 40 for fixing the core 10 to the steel structure is also reinforced so that buckling in the brace plate 40 does not occur.

On the other hand, non-buckling brace 1 for the steel structure seismic reinforcement of the present invention as described above both ends by the brace plate 40 to reinforce the space forming the column 5 and the beam 6 of the steel structure in one direction oblique. As shown in FIG. 1, as shown in FIG. 1, the brace plate 40 is coupled to the center of the beam 6 and reinforces with a bi-directional oblique line at the brace plate 40 at the center of the beam 6. 6) can be combined.

2 is a cross-sectional view of the core of the present invention, Figure 3 is a cross-sectional view taken along the line A-A of FIG.

As shown in Figures 2 and 3, the non-buckling bracing 1 for the seismic reinforcement of the steel structure of the present invention is a core 10 formed of H-shaped steel and the core 10 in both directions of the flange 12 Combination is composed of a reinforcing material 20 configured to surround the outside.

The core material 10 uses a H-shaped steel having a horizontally formed web 11 and a flange 12 configured to be parallel to both ends of the web 11, and the H-shaped steel is manufactured to have two axial directions. Such H-shaped steel is to reinforce the cross-section by configuring the reinforcing material 20 on the outside of the core material 10 in order to reduce the buckling effect when the compressive force is applied.

The core material 10 and the reinforcement 20 are non-attached so that there is no direct coupling surface, so as to reinforce only the buckling of the core material 10, only by the mutual coupling of the two

reinforcement

20, 20, the reinforcement 20 Is fixedly coupled to the outside of the core material (10).

As described above, the H-shaped steel used as the core material 10 is reinforced in the bidirectional direction of the flange 12 of the core material 10 so as to surround the outside in order to reinforce the cross section of a predetermined section in order to reduce the buckling effect when the compressive force is applied. ) Is configured.

The reinforcing material 20 has a c-shaped cross-section main body 21 having a predetermined length, a coupling portion 22 in which both ends of the main body 21 are bent at an outward right angle, and an outer end portion of the coupling portion 22. Is integrally formed with a reinforcing portion 23 extending at right angles to the outside.

The main body 21 of the reinforcing material 20 is configured in a U-shaped cross-sectional shape, so as to cover the flange portion of the core material 10. In other words, the flange 12 of the core 10 is drawn into the concave portion of the main body 21, and both ends of the main body 21 are positioned at the center of the web 11 of the core 10. Both ends of the reinforcing material 20 constitutes an engaging portion 22 having an outwardly bent shape, which is the contact of the reinforcing material 20 when the reinforcing material 20 is joined in both flange 12 directions of the core material 10. In order to increase the buckling strength by widening the contact area to facilitate the coupling, to increase the stiffness to the buckling to the bent shape, and to increase the sectional strength of the cross section of the core 10 made of H-shaped steel to strengthen the weak axis. In this way, the compressive resistance can be ensured as much as the cross-sectional strength of the brace.

That is, when the reinforcement of the core 10, in consideration of the directionality in the axis of the cross section of the column member, in the case of H-shaped steel with a small second section radius should be reinforced about the weak axis.

Therefore, the reinforcing material 20 is placed in a form in which the body 21 covers the flanges of the core material 10 on both sides, and combines the coupling portions 22 of the reinforcing material 20 facing each other by bolting, welding, or the like. By combining the two reinforcing members (20) facing each other, the coupling portion 22 and the reinforcing portion (23) is positioned on the weak axis of the core material 10 to reinforce the weak axis.

Although not shown in the coupling portion 22, the coupling hole for the bolt coupling can be made to facilitate the coupling, and the two reinforcing materials 20 configured as described above are mutually provided at both sides of the flange 12 of the core material 10. When facing each other, at this time, the

coupling portions

22 and 22 of the facing

reinforcement

20 and 20 are mutually interviewed, and the

coupling portions

22 and 22 that are mutually interviewed are bolted together.

In addition, the reinforcing material 20 may be made of various materials such as steel, composite materials such as FRP, but the reinforcing material 20 can be easily formed by forming the material itself from aluminum because there are many bending parts. .

The reinforcement plate 30 is formed in a plate shape having a predetermined length and thickness between the outer surface of the flange 12 of the core material 10 and the inner surface of the body 21 of the reinforcement 20, the coupling of the reinforcement 20 It is possible to increase the cross-sectional area of the shaft that is not reinforced by the part 22 and the reinforcing part 23 to reinforce, and the core 10 is inserted between the

coupling plates

43 and 43 so that the core 10 Since the coupling plate 43 is positioned outside the flange 12, the thickness of the reinforcing plate 30 and the thickness of the coupling plate 43 are the same so that the step is not formed when the reinforcing material 20 is coupled. It could be.

The core member 10 formed of the H-shaped joint 22 of the reinforcing member 20 to reinforce the cross section of the weak axis, which is the side where the secondary cross section is smaller in consideration of the directionality in the axis of the cross section in order to reduce the buckling effect when the compressive force is applied. ) And the reinforcement 23 is located and coupled, corresponding to the inside of the reinforcement 20 to facilitate assembly and to reduce the production cost without structural change of a separate reinforcement 20 to reinforce the steel shaft correspondingly. It is to configure the reinforcing plate (30).

In addition, the reinforcing plate 30 may apply a lubricant to one side or both sides so that slip occurs without being coupled with the core 10 and reinforcement of the shaft not reinforced by the coupling part 22 and the reinforcing part 23. To play a role.

Figure 4 is an exploded perspective view of the connection portion of the brace plate and the core of the present invention, Figure 5a is a perspective view of the coupling state of Figure 4, Figure 5b is a side cross-sectional view of the coupling state of FIG.

As such, the core material 10, which is reinforced with the reinforcing material 20, forms a brace plate 40 at both ends to facilitate coupling with the beam 6 of the steel structure.

As shown in FIG. 4, the brace plate 40 has a fixed plate 41 coupled to the beam 6 in a plate shape, and a vertical plate 42 formed by being coupled by a known method such as welding vertically from the fixed plate 41. ) And two coupling plates 43 are fitted to the upper portion of the vertical plate 42 to be coupled by a known method such as welding.

The fixing plate 41 is formed in a plate shape of a predetermined size to be fixed by bolting to the beam 6 by interviewing the beam 6, and can be used by drilling a bolt fastening hole if necessary.

The vertical plate 42 is coupled and fixed to be perpendicular to the fixed plate 41 in a plate shape. At this time, the vertical plate 42 may be formed in the center portion in the width direction of the fixing plate 41 and, if necessary, may be formed to be shifted to one side in the width direction center portion.

The coupling plate 43 is formed in a rectangular plate shape having a predetermined length and thickness, and the coupling plate 43 has one end in the longitudinal direction fitted to the vertical plate 42, and the other end in the longitudinal direction is outside the vertical plate 42. It is coupled to protrude to, in order to facilitate the coupling in one end of the longitudinal direction of the coupling plate 43 is cut to a certain distance in the longitudinal center portion so that the incision 431 is formed, the coupling plate on the vertical plate 42 The cutout 431 of 43 is fitted to be engaged by a known method such as welding. At this time, the coupling plate 43 is inclined to be coupled to the fixed plate 41 to have a predetermined angle, so as to match the inclination direction of the core material 10 reinforced with the reinforcing material 20 and the reinforcing plate 30 core material 10 ) To facilitate the coupling and the compressive force to be smoothly transmitted from the brace plate 40 to the core material 10 to reduce the occurrence of buckling.

When the pair of

coupling plates

43 and 43 configured to be spaced apart from each other are fixed to the beams 6 of the corners at which the pillars 5 and the beams 6 of the brace plate 40 are coupled, the fixing plates 41 are fixed. ) And a pair of

coupling plates

43 and 43 having a predetermined angle, and when the brace plate 40 is coupled to the central portion of the beam 6 in the longitudinal direction, two pairs of coupling plates 43 ( 43 may be coupled to the vertical plate 42 so as to be symmetrical with each other at the central portion of the fixed plate 41.

As shown in FIGS. 5A and 5B, the core 10 is drawn between two

coupling plates

43 and 43, and is configured such that the coupling plate 43 and the flange 12 are interviewed and consequently the coupling plate 43. The cross-section of the coupling plate 43 is increased by the flange 12 to be superimposed on the () to have an effect that the coupling plate 43 is reinforced.

Since the ends of the web 11 of the core 10 meet at the same surface as the vertical plate 42, the coupling of the brace plate 40 and the core 10 is performed by the web 11 of the core 10 and the vertical plate. (42) to the bolts 50 to the plate 45 to be coupled.

At this time, as shown in Figure 4, the vertical plate 42 is cut so that the end coupled to the coupling plate 43 to form a perpendicular to the coupling plate 43 to form a cutting surface 421. When the cutting surface 421 is formed as described above, the end of the web 11 of the core material 10 and the cutting surface 421 are not shifted and matched with each other so as to be easily interviewed and coupled to the core material 10. Buckling in the plate 43 can be prevented from occurring.

FIG. 6A is a perspective view of another embodiment of FIG. 5A, and FIG. 6B is a side cross-sectional view of another embodiment of FIG. 5B.

The reinforcing member 20 configured as described above is coupled to the brace plate 40 at the end of the core member 10 such that the reinforcing member 20 is configured to be coupled to the central portion in the longitudinal direction except for both ends of the core member 10 as shown in FIGS. 5A and 5B. 6A and 6B, as shown in FIGS. 6A and 6B, the coupling plate 43 of the brace plate 40 may be inserted inwardly at both ends of the reinforcing material 20, such that the coupling plate 43 and the reinforcing material 20 are provided. And the flange 12 of the core material 10 can be configured to be formed overlapping.

When the coupling plate 43 and the reinforcing material 20 and the flange 12 of the core material 10 are overlapped in this manner, as shown in FIG. 6B, the outer ends of the two

coupling plates

43 and 43 are reinforced ( It is inserted into the reinforcing material 20 through the end of the 20, the outer surface of the coupling plate 43 is constrained by the reinforcing material 20, the inner surface of the coupling plate 43 is the flange of the core material (10) Reinforcement of the coupling plate 43 so that 12) is interviewed and restrained so that buckling in the coupling plate 43 does not occur during compression.

In this case, since the web 11 is coupled to the vertical plate 42 by the cover plate 45, the core material 10 does not need to be separately coupled, but the coupling plate 43 and the core material inserted into the reinforcing material 20 ( 10 may be bolted to the flange 12 of the reinforcement 20 at the same time.

In addition, when the coupling plate 43 is inserted into the reinforcing material 20 and reinforced, the core material 10 is inserted between the

coupling plates

43 and 43 so that the flange 12 of the core material 10 ( 12 are interviewed with the

coupling plates

43 and 43, respectively, so that the inner side of the reinforcing material 20 and the outside of the flange 12 of the core material 10 and the core material 10, the coupling plate 43 or reinforcing plate 30 Since is formed, the thickness of the reinforcing plate 30 and the thickness of the coupling plate 43 is formed to be the same so that no step is formed.

7A is a perspective view of another embodiment of the reinforcement of the present invention, and FIG. 7B is a plan view of another embodiment of the reinforcement of the present invention.

Since the reinforcement 20 is formed of a molded steel sheet or a bent steel sheet and is formed of one long member such as the core 10, the reinforcement 20 may be segmented in the longitudinal direction to facilitate transport and workability of the reinforcement 20. have.

At this time, as shown in Figure 7a, the reinforcing material 20 is formed with a cutting surface 27 which is cut to one side from the central portion in the longitudinal direction is formed of two long first segment member (20a) and a short second segment member When the two reinforcements 20 are joined at both sides of the core 10, as shown in FIG. 7B, the cut surfaces 27 and 27 of the

reinforcements

20 and 20 on both sides are collinear. By staggering rather than being located at both sides of the

reinforcement

20 and 20, discontinuities do not occur.

That is, as shown in FIG. 7A, the upper reinforcing member 20 sequentially arranges the second segment member 20b having a shorter length and the first segment member 20a having a longer length from the left side, and the lower reinforcing member 20. ), The first segment member 20a having a long length and the second segment member 20b having a short length are arranged in this order, so that the cut surface 27 of the upper reinforcement 20 and the cut surface of the lower reinforcement 20 ( 27) do not match, staggered to combine.

In addition, when the cutting surface 27 of the first segment member 20a having a long length of the reinforcing material and the second segment member 20b having a short length is formed in a straight line, a discontinuous surface may be formed at the cutting surface 27. As shown in FIG. 7B, the cutting surface 27 itself is formed in a shape in which one side of the reinforcing material 20 protrudes and one side is recessed so that the first segment member 20a and the second segment member on the cutting surface 27. 20b can be configured to engage with each other.

The non-buckling brace for seismic reinforcement of steel structures of the present invention configured as described above can be fastened by bolting without using a coupling method such as welding by constructing a reinforcement to surround a core formed of H-shaped steel, such as power facilities. It can be installed very easily during operation, and reinforces the weak axis of the core web and expands the cross section of the core to improve the cross-sectional performance, so that buckling does not occur even during compression, inducing stable hysteretic behavior even in repeated loads such as earthquakes There is a very useful effect to increase the stability of the structure, and also, brace plate that is a connection between the core material and steel structure, which is easy to buckling and fracture during compression by configuring the brace plate to secure the reinforced core to match the behavior of the core material Very useful to avoid buckling during compression There is one effect.

So far, the present invention has been described in detail with reference to the presented embodiments, but those skilled in the art may make various modifications and modifications without departing from the technical spirit of the present invention with reference to the presented embodiments. will be. The invention is not limited by the invention as such variations and modifications but only by the claims appended hereto.

Non-buckling braces for seismic reinforcement of steel structures of the present invention configure the reinforcement to surround the core formed of H-shaped steel to reinforce the weak axis of the core and expand the cross section of the core to improve the cross-sectional performance, and to fix the reinforced core The brace plate is also a very useful invention for reinforcing braces of steel structures, such as power plants and plants, such that the buckling does not occur during compression.

Claims

In the brace to reinforce the steel structure consisting of steel pillars (5) and beams (6),

A core member 10 composed of an H web having a flange 12 formed vertically at both ends thereof with a central web 11;

A main body 21 having a C-shaped cross section, a coupling portion 22 in which both ends of the main body 21 are bent at right angles to the outside, and an outer end portion of the coupling portion 22 at right angles to the outside direction are formed. Two reinforcing members 20 formed of extending reinforcing parts 23 configured to be coupled to each other in both directions of the flange 12 of the core material 10 so as to surround the central portion in the longitudinal direction of the core material 10;

A reinforcing plate 30 formed in a plate shape having a predetermined length and thickness between the outer surface of the flange 12 of the core material 10 and the inner surface of the body 21 of the reinforcing material 20;

A fixed plate 41 coupled to the beam 6 in a plate shape, a vertical plate 42 formed vertically in the fixed plate 41, and a plate shape having a predetermined length and thickness in the longitudinal center portion at one end in the longitudinal direction. The cutting plate 431 is inserted into the upper portion of the vertical plate 42 so that the coupling plate 43 in which the cutting hole 431 is formed by cutting to a certain distance is formed at an angle with the fixing plate 41. It is formed so as to be spaced apart from each other by a predetermined distance, the core 10 is introduced between the pair of coupling plate 43 and the coupling plate 43 and the web 11 and the vertical plate 42 of the core 10 is the face plate 45 Steel plate seismic reinforcement non-buckling brace, characterized in that consisting of;
The method according to claim 1,

Non-buckling brace for seismic reinforcing steel frame, characterized in that the coupling plate 43 and the flange 12 of the core material 10 is bolted.
The method according to claim 1,

The coupling plate 43 of the brace plate 40 is inserted inwardly at both ends of the reinforcing material 20, so that the coupling plate 43 and the flange 12 of the reinforcing material 20 and the core 10 are formed to overlap. Non-buckling brace for seismic reinforcement of steel structure, characterized in that.
The method according to claim 1,

Vertical plate 42 is a non-buckling brace for seismic reinforcing steel structure, characterized in that the cutting surface 421 is formed by cutting the end portion is coupled to the coupling plate 43 to form a right angle with the coupling plate 43.
The method according to claim 1,

Reinforcement 20 is a non-buckling brace for seismic reinforcement of steel structure, characterized in that formed of aluminum.
The method according to claim 1,

The reinforcing material 20 is formed with a cutting surface 27 which is cut to one side at the central portion in the longitudinal direction and is segmented into two long first segment members 20a and a short second segment member 20b,

The cut surfaces 27 of the two segment members 20a and 20b, which are segmented, are formed in a shape in which one side protrudes and one side is concave in plan, so that the first segment member 20a and the second segment member ( 20b) non-buckling brace for earthquake-resistant reinforcing steel structure, characterized in that configured to interlock with each other.