WO2006018865A1

WO2006018865A1 - Steel-framed beam reinforcing metal fixture

Info

Publication number: WO2006018865A1
Application number: PCT/JP2004/011776
Authority: WO
Inventors: Hideshige Matsuo; Takashi Kitano; Kenzo Nakano; Syuji Ohba
Original assignee: Hitachi Metals Techno, Ltd.
Priority date: 2004-08-17
Filing date: 2004-08-17
Publication date: 2006-02-23
Also published as: US20080047221A1; JP4616837B2; JPWO2006018865A1

Abstract

A steel-framed beam reinforcing metal fixture capable of recovering the strength of a steel-framed beam larger than that of a conventional steel-framed beam reinforcing metal fixture for S-structure. The steel-framed reinforcing metal fixture (7-1) is generally fitted to a through-hole (6) in an SRC beam (1), and its outer peripheral part is fillet-welded (9) to a steel-framed beam web (5-1). Also, the axial length (ta) of the steel-framed beam reinforcing metal fixture (7-1) is 0.5 to 200.00 times its wall thickness (tb) in the radial direction. In addition, the steel-framed beam reinforcing metal fixture (7-1) is formed in such a manner that a length (t1) from one end of the steel-framed beam web (5-1) to one end of the outer peripheral part thereof and a length (t1) from the other end of the steel-framed beam web (5-1) to the other end of the outer peripheral part thereof are 0.7 times the thickness (tw) of the steel-framed beam web (5-1) or more, respectively.

Description

Specification

Steel beam reinforcement bracket

Technical field

[0001] The present invention relates to an s structure and an S structure (steel structure) or an SRC structure (steel reinforced concrete structure) by being substantially fitted into a through-hole provided in a steel beam web of a steel beam.

The present invention relates to a steel beam reinforcing bracket that reinforces a steel beam in an SRC structure.

Background art

[0002] In a building, a through hole is sometimes provided in a steel beam web of a steel beam in an S structure or an SRC structure in order to allow piping or wiring to pass through the inside, but conventionally, a through hole has been provided. The following S structural steel beam reinforcement brackets were provided to reinforce the S structural steel beam. In other words, it is a ring-shaped reinforcing bracket whose outer peripheral part is welded and fixed to the peripheral part of the through-hole formed in the S-structure steel beam, and its axial length is 0.5 times the radial thickness. This is a steel beam reinforcing bracket for S structure with a magnification of 10.1x. According to this reinforcing bracket, it is possible to increase the degree of freedom of pipe attachment to the through hole provided in the steel beam in the S structure. In the s structure, the through hole in the plasticized region of the steel beam close to the column beam joint Installation is possible (see Patent Document 1).

Patent Document 1: Japanese Patent Application Laid-Open No. 2003-232105

Disclosure of the invention

Problems to be solved by the invention

[0003] However, the conventional S-structure steel beam reinforcing bracket is welded and fixed by fillet welding or butt welding. However, in the former case, the S-structure steel beam reinforcing bracket is simply used. Both end portions in the axial direction of the outer peripheral portion are merely welded and fixed to the peripheral portion of the through-hole from the front side and the back side, respectively (paragraphs [0028], [0 029], FIG. 1, etc. of Patent Document 1) In the latter case, the axial length of the flange portion of the S structural steel beam reinforcing fixture that is simply butt welded is less than half the axial length of the S structural steel beam reinforcing bracket. (Patent Document 1, paragraphs [0033], [0038], [0050], FIG. 5, FIG. 6, etc.). Therefore, in the conventional steel beam reinforcement bracket for S structure, There was room for further improvements in restoring the full strength of steel beams.

[0004] Further, it was necessary to improve the recovery of all strengths not only for S-structure steel beams but also for SRC-structure steel beams.

[0005] Accordingly, an object of the present invention is to provide a steel beam reinforcing bracket capable of recovering the full strength of the steel beam in the S structure or SRC structure as compared with the conventional steel beam reinforcing bracket for S structure. .

Means for solving the problem

[0006] According to the present invention, the above problem can be solved by the following means.

[0007] A first invention is a steel beam reinforcing metal fitting that is substantially fitted in a through hole of a steel beam, wherein the outer peripheral portion is fillet welded to the steel beam web, and the axial length is a radial thickness. 0.5 times 1 to 200.0 times the thickness, and the length from one end of the steel beam web to one end of the outer periphery and the length from the other end of the steel beam web to the other end of the outer periphery The steel beam reinforcing metal fitting is characterized in that it is 0.7 times or more the thickness of the steel beam web.

[0008] A second invention is a steel beam reinforcing bracket that is substantially fitted in a through-hole of a steel beam. In the steel beam reinforcing metal fitting, an outer peripheral portion force is butt welded to the steel beam web, and the axial length is a radial thickness. The steel beam in the outer circumferential portion is 0.5 times one to 200.0 times, and the length from one end side of the steel beam web to the other end of the outer circumferential portion is larger than the thickness of the steel beam web. The steel beam reinforcing bracket is characterized in that a curved surface (0≤curvature radius≤5 times the thickness of the steel beam web) is included in the joint surface with the web.

[0009] A third invention is a steel beam reinforcing metal fitting that is substantially fitted in a through hole of a steel beam, the outer peripheral portion of which is butt welded to the steel beam web, and the axial length is a radial wall thickness. The steel frame at the outer circumferential portion is 0.5 times 1 to 200.0 times longer than the thickness of the steel beam web and has a length from one end side of the steel beam web to the other end of the outer circumferential portion. The first joint surface (0≤ length <the thickness of the steel beam web), which is substantially parallel to the radial direction, is inclined at an angle θ (15≤ Θ≤ 80) from the axial direction. A steel beam reinforcing metal fitting characterized by including a second joint surface.

[0010] According to a fourth aspect of the present invention, in the steel beam reinforcing bracket that is substantially fitted in the through hole of the steel beam, the axial length is 0.5 times 1 to 200.0 times the radial thickness. The steel beam An indirect member that is fillet welded to the hub is fillet welded, and the length from one end of the steel beam web to one end of the indirect member and the other end of the steel beam web to the other end of the indirect member. The steel beam reinforcing bracket is characterized in that the length is 0.7 times or more the thickness of the steel beam web.

[0011] According to a fifth aspect of the present invention, in the steel beam reinforcing bracket that is substantially fitted into the through hole of the steel beam, the length in the axial direction is 0.5 times 1 to 200.0 times the thickness in the radial direction. In addition, an indirect member that is butt welded to the steel beam web is fillet welded to the outer periphery, and the length from one end of the steel beam web to the other end of the indirect member is the length of the steel beam web. A steel beam characterized in that a curved surface (0≤curvature radius≤5 times the thickness of the steel beam web) is included in the joint surface of the joint member larger than the thickness with the steel beam web It is a reinforcing bracket.

[0012] In a sixth aspect of the present invention, in the steel beam reinforcing bracket that is substantially fitted into the through hole of the steel beam, the length in the axial direction is 0.5 times to 200.0 times the thickness in the radial direction. In addition, an indirect member that is butt welded to the steel beam web is fillet welded to the outer periphery, and the length from one end of the steel beam web to the other end of the indirect member is the length of the steel beam web. A first joining surface substantially parallel to the radial direction (0≤length <thickness of the steel beam web) and an axial direction of a joint surface with the steel beam web of the joint member larger than the thickness; And a second joint surface inclined at an angle Θ (15≤ Θ≤ 80) from

[0013] A seventh invention is a pair of steel beam reinforcing brackets comprising a first steel beam reinforcing bracket and a second steel beam reinforcing bracket, which are substantially fitted in a through hole of the steel beam. The steel beam reinforcement bracket of No. 1 and the second steel beam reinforcement bracket have an axial length of 0.5 to 12.0 times the radial thickness, and the first steel beam reinforcement An indirect member fillet welded to the steel beam web is fillet welded to one end of the metal fitting and the other end of the second steel beam reinforcing metal, from one end of the steel beam web to one end of the indirect member And a length from the other end of the steel beam web to the other end of the indirect member is not less than 0.7 times the thickness of the steel beam web. It is.

[0014] According to an eighth aspect of the present invention, there is provided a pair of steel beam reinforcing brackets including a first steel beam reinforcing bracket and a second steel beam reinforcing bracket that are substantially fitted in a through hole of the steel beam. 1 steel beam reinforcement The metal fitting and the second steel beam reinforcing metal fitting have an axial length of 0.5 times to 200.0 times the radial thickness, and one end of the first steel beam reinforcing metal fitting and the second steel beam reinforcing metal fitting are An indirect member butt welded to the steel beam web is fillet welded to the other end of the steel beam reinforcing metal fitting, and the length from one end of the steel beam web to the other end of the indirect member is the steel beam. The indirect member larger than the thickness of the web includes a curved surface (0≤curvature radius≤5 times the thickness of the steel beam web) in the joint surface with the steel beam web. It is a steel beam reinforcement bracket.

[0015] A ninth invention is a pair of steel beam reinforcing brackets comprising a first steel beam reinforcing bracket and a second steel beam reinforcing bracket, which are substantially fitted in a through hole of the steel beam. The steel beam reinforcement bracket of No. 1 and the second steel beam reinforcement bracket have an axial length of 0.5 to 12.0 times the radial thickness, and the first steel beam reinforcement An indirect member butt welded to the steel beam web is fillet welded to one end of the metal fitting and the other end of the second steel beam reinforcing metal, from one end side of the steel beam web to the other end of the indirect member The first joint surface (0≤ length <the steel frame) is approximately parallel to the radial direction of the joint surface with the steel beam web of the indirect member whose length is greater than the thickness of the steel beam web. And a second joint surface inclined at an angle θ (15≤Θ≤80) from the axial direction. It is a trabecular reinforcing metal fitting.

The invention's effect

[0016] According to the present invention, the allowable force of the welded portion formed by welding the steel beam reinforcing bracket and the steel beam web can be greater than or equal to the allowable force of the steel beam. Therefore, according to the present invention, the full strength of the steel beam can be recovered. Further, according to the present invention, not only the steel beam in the S structure but also the total strength of the steel beam in the SRC structure can be achieved. Brief Description of Drawings

FIG. 1 is a diagram showing a first example of a portion indicated by a broken line in FIG.

2 is a diagram showing a second example of the portion indicated by the broken line in FIG.

FIG. 3 is a diagram showing a third example of the portion indicated by the broken line in FIG.

FIG. 4 is a diagram showing a fourth example of the portion indicated by the broken line in FIG.

FIG. 5 is a diagram showing a fifth example of the portion indicated by the broken line in FIG. FIG. 6 is a diagram showing a sixth example of the portion indicated by the broken line in FIG.

FIG. 7 is a diagram showing a seventh example of the portion indicated by the broken line in FIG.

FIG. 8 is a diagram showing an eighth example of the portion indicated by the broken line in FIG.

FIG. 9 is a diagram showing a ninth example of the portion indicated by the broken line in FIG.

FIG. 10 is a diagram showing a tenth example of the portion indicated by the broken line in FIG.

FIG. 11 is a diagram showing an eleventh example of the portion indicated by the broken line in FIG.

FIG. 12 is a diagram showing a twelfth example of the portion indicated by the broken line in FIG.

FIG. 13 is a view showing an SRC beam reinforced by a steel beam reinforcing bracket according to an embodiment of the present invention.

Explanation of symbols

1 SRC beam

2 Main muscle

3 Hoop muscle

4 Concrete

5 Steel beam

5-1 Steel beam web

5-2 Steel beam flange

6 Through hole

7-1 Steel beam reinforcement bracket

7-2 Steel beam reinforcement bracket

7-3 Steel beam reinforcement bracket

7-4 Steel beam reinforcement bracket

7-5 Steel beam reinforcement bracket

7-6 Steel beam reinforcement bracket

7-7 Steel beam reinforcement bracket

7-8 Steel beam reinforcement bracket

7-9-1 First steel beam reinforcement bracket

7-9-2 Second steel beam reinforcement bracket 7-10-1 First steel beam reinforcement bracket

7-10-2 Second steel beam reinforcement bracket

7-11-1 First steel beam reinforcement bracket

7-11-2 Second steel beam reinforcement bracket

7-12-1 First steel beam reinforcement bracket

7-12-2 Second steel beam reinforcement bracket

8 Parts shown by broken lines in Fig. 13

9 Fillet welding

10 Butt welding

12 Bottom of groove

11-1 Indirect members

11-2 Indirect members

11-3 Indirect members

11-4 Indirect members

ta Length of steel beam reinforcing bracket in the axial direction

tb Radial thickness of steel beam reinforcing bracket

tw Steel beam web thickness

tl Length from one end of the steel beam web to one end of the outer periphery, length from the other end of the steel beam web to the other end of the outer periphery, length from one end of the steel beam web to one end of the indirect member The length from the other end of the steel beam web to the other end of the indirect member

t2 Length from one end of the steel beam web to the other end of the outer circumference, one end side of the steel beam web Force Length to the other end of the indirect member

R Curvature radius of the first joint surface in the steel beam reinforcement bracket, curvature radius of the first joint surface in the indirect member

Θ Inclination from the axial direction of the second joint surface in the steel beam reinforcing bracket, Inclined from the axial direction of the second joint surface in the indirect member

L The length of the first joint surface at the outer periphery, the length of the first joint surface at the indirect member BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.

FIG. 13 is a view showing the SRC beam 1 reinforced by the steel beam reinforcing metal fitting according to the embodiment of the present invention.

As shown in FIG. 13, the SRC beam 1 includes a main bar 2, a hoop bar 3, a concrete 4, and a steel beam 5 made of Maoka force. The steel beam 5 includes a steel beam web 5-1 and a steel beam flange 5_2. Further, the SRC beam 1 is provided with a through hole 6, and the steel beam reinforcing metal fitting 7-1 according to the embodiment of the present invention is substantially fitted into the through hole 6. The steel beam reinforcing bracket 7-1 is welded to the steel beam web 5-1. The steel beam reinforcing bracket 7-1 can be made of a member (for example, steel or forged steel) whose material strength is equal to or greater than that of the steel beam web 5-1.

FIG. 1 is an enlarged view of a portion 8 indicated by a broken line in FIG. 13, and is a view showing a first example of the portion 8 indicated by a broken line in FIG.

As shown in FIG. 1, in the first example, the outer peripheral portion of the steel beam reinforcing bracket 7-1 is fillet welded 9 to the steel beam web 5-1.

In this specification, the axial direction of the steel beam reinforcing bracket 7-1 is simply referred to as “axial direction”, and the radial direction of the steel beam reinforcing bracket 7-1 is simply referred to as “radial direction”. The axial thickness tw of the steel beam web 5-1 refers to the length of the steel beam web 5_1 in the axial direction of the steel beam reinforcement bracket 7-1.

Here, in the steel beam reinforcing metal fitting 7-1, the length ta in the axial direction is 0.5 to 200.0 times the wall thickness tb in the radial direction. Further, in this steel beam reinforcing metal fitting 7-1, the length tl from one end side of the steel beam web 5-1 to one end of the outer peripheral part and the other end side of the outer peripheral part from the other end side of the steel beam web 5-1 Length tl and force S, and thickness of steel beam web 5_1 is more than 0.7 times tw. In the first example shown in FIG. 1, the length from one end side of the steel beam web 5-1 to one end of the outer peripheral portion and the other end side of the steel beam web 5-1 to the other end of the outer peripheral portion. The length of is the same (both tl) for convenience of explanation. Therefore, the present invention is limited to a form in which the length from one end side of the steel beam web 5-1 to one end of the outer peripheral portion is the same as the length from the other end side of the steel beam web 5_1 to the other end of the outer peripheral portion. It is not something. [0022] According to the steel beam reinforcing bracket 7-1, the allowable force of the welded portion 9 is larger than the allowable force of the steel beam web 5-1, so that the full strength of the steel beam can be recovered. . This is shown below using mathematical formulas.

[0023] The allowable force of the steel beam web is expressed by the following equation.

[Number 1]

(Permissible force of steel beam web) = · π · (Length of diameter of through hole). (Allowable stress)

[0024] Further, the allowable force of the weld 9 is expressed by the following equation.

[Equation 2]

(Maximum allowable force of weld 9) = 2. ·? R · (Length of through hole diameter). (Allowable stress)

V2

[0025] Here, in the steel beam reinforcing bracket 7-1 according to the first example, the length tl from one end of the steel beam web 5-1 to one end of the outer peripheral portion and the steel beam web 5-1 The length tl and the force from the other end to the other end of the outer periphery are not less than 0.7 times the thickness tw of the steel beam web 5-1. Therefore, the following equation can be derived.

[Equation 3]

2 Ί.Λ · '(length of the through hole). (Allowable stress) ≥ t _w .; R' (Length of the diameter of the through hole) A Allowable stress) V2

... t, ^. t.— ^ O. 7 t,

The configuration shown in FIG. 1 is an example of the portion 8 indicated by the broken line in FIG. 13. In the present invention, the portion 8 indicated by the broken line in FIG. It can also be realized with the configuration shown in Fig. 2 to Fig. 12. Hereinafter, the configurations shown in FIGS. 2 to 12 will be described in order.

FIG. 2 is a diagram illustrating a second example of the portion 8 indicated by a broken line in FIG.

As shown in FIG. 2, the steel beam reinforcing bracket 2-2 according to the second example has an outer peripheral portion provided with a convex portion on one end side, and the convex portion on one end side in the outer peripheral portion and the other. The end planes are fillet welded 9 to the steel beam webs 5-1 respectively.

Here, in this steel beam reinforcing metal fitting, its axial length ta is 0.5 to 200.0 times the radial thickness tb on the other end side. In addition, this steel beam reinforcement bracket 7-2 The length tl from one end of the steel beam web 5-1 to one end of the outer periphery and the length tl from the other end of the steel beam web 5-1 to the other end of the outer periphery and the force S The thickness of steel beam web 5-1 is more than 0.7 times the thickness tw. In the second example shown in FIG. 2, the length from one end of the steel beam web 5-1 to one end of the outer periphery and the length from the other end of the steel beam web 5-1 to the other end of the outer periphery are shown. A force that makes the length the same (both tl) This is for convenience of explanation. Therefore, in the present invention, the length from one end side of the steel beam web 5-1 to one end of the outer peripheral portion is the same as the length from the other end side of the steel beam web 5-1 to the other end of the outer peripheral portion. It is not limited to the form.

[0028] In this second example, as in the first example, the allowable force of the welded portion 9 is greater than the allowable force of the steel beam web 51. Therefore, the full strength of the steel beam is restored. be able to.

FIG. 3 is a diagram illustrating a third example of the portion 8 indicated by a broken line in FIG.

As shown in FIG. 3, the steel beam reinforcing metal fitting 7-3 according to the third example has an outer peripheral part provided with a convex part on one end side. At the other end of the outer periphery, a first joint surface (curved surface) having a radius of curvature R (0≤R≤steel beam web 5-1 thickness tw, 5 times) and the curved surface are connected in the axial direction. And a second joint surface (slope plane) inclined at an angle θ (15 ≤ Θ ≤ 80) and the first joint surface and the second joint surface are formed on the steel beam web 5-1. Butt welded. Here, in this steel beam reinforcing metal fitting 7-3, the axial length ta is 0.5 to 200.0 times the radial thickness tb on the other end side. In this steel beam reinforcing bracket 7-3, the length t2 from one end of the steel beam web to the other end of the outer periphery is larger than the thickness tw of the steel beam web 5-1.

According to this third example, all the joint surfaces of the steel beam web 5-1 are welded to the outer periphery of the steel beam reinforcement bracket 7_3, so that the full strength of the steel beam can be restored. it can. Further, according to the third example, since the curved surface is provided on the groove bottom portion 12 of the steel beam reinforcing metal fitting 7-3, the weld metal 10 can be easily welded to the groove bottom portion 12. Therefore, according to the third example, it is possible to easily perform welding with good quality at the groove bottom portion 12.

In addition, according to the third example, there is provided the second joint surface (inclined plane) that is connected to the first joint surface and is inclined at an angle θ (15≤Θ≤80) from the axial direction. Occurs during Slag and the like are discharged to the outside of the groove, and welding with good quality can be easily performed. In general, when the volume of the weld metal 10 increases, it is necessary to perform multilayer build-up welding, and slag remains in the weld metal or defective welding occurs. The probability of occurrence increases. However, in this third example, the radius of curvature R of the first joint surface (curved surface) of the steel beam reinforcement bracket 7-3 is 0≤R≤ (5 times the thickness tw of the steel beam web 5-1) The angle of inclination of the second joint surface (inclined plane) connected to this first joint surface (curved surface) is the angle θ (15≤ Θ≤80) from the axial direction, so the volume of the weld metal 10 Does not grow unnecessarily. Therefore, according to the third example, the probability of occurrence of defects in the weld metal 10 can be reduced. In the third example, the second joint surface (inclined plane) is inclined at an angle θ (15≤ Θ≤80) from the axial direction, but in the range where the angle Θ is 30 degrees to 70 degrees, The probability of occurrence of defects in the weld metal 10 can be further reduced, and the amount of the weld metal 10 to be used can be reduced, so that the cost can be reduced.

In the third example, the force in which the first joint surface in the outer peripheral portion of the steel beam reinforcing metal fitting 7-3 is a curved surface and the joint surface in the steel beam web 5-1 is a flat surface. The first joint surface and the second joint surface at the outer peripheral portion of the reinforcing metal fitting 7-3 can be made into the same flat surface, and the joint surface in the steel beam web 5-1 can be made into a curved surface. In this case, the steel beam web 5-1 can be provided with an inclined plane that is continuous with the curved surface provided on the joint surface and is inclined at an angle θ (15≤Θ≤80 degrees) from the axial direction.

In the third example, the first joint surface (curved surface) having a radius of curvature R is connected to the other end side of the outer peripheral portion of the steel beam reinforcing bracket 7-3 and the curved surface, and the angle θ ( In the present invention, the second joint surface is formed on the other end side of the outer periphery of the steel beam reinforcing bracket 7-3. It is also possible to provide only a joint surface (curved surface) having a radius of curvature R without providing an inclined flat surface.

FIG. 4 is a diagram showing a fourth example of the portion 8 indicated by a broken line in FIG.

As shown in FIG. 4, the steel beam reinforcing bracket 7-4 according to the fourth example includes an outer peripheral portion having a convex portion on one end side. At the other end of the outer periphery, there is a first joint surface approximately parallel to the radial direction of the steel beam reinforcement bracket 7-4 and the angle θ (15≤ Θ≤ from the axial direction of the steel beam reinforcement bracket 7-4 A second joint surface inclined at 80) is formed, and the first joint surface and the second joint surface are butt welded 10 to the steel beam web 5_1.

Here, in the steel beam reinforcing metal fitting 7-4, the axial length ta is 0.5 to 200.0 times the radial thickness tb on the other end side. Further, in this steel beam reinforcing metal fitting 7-4, the length t2 from one end side of the steel beam web 5-1 to the other end of the outer peripheral portion is larger than the thickness tw of the steel beam web 5-1. In this steel beam reinforcing bracket 7-4, the length L of the first joint surface at the outer periphery satisfies the condition of 0≤L≤ (steel beam web 5-1 thickness tw).

According to this fourth example, all the joint surfaces of the steel beam webs 5-1 are welded to the outer peripheries of the steel beam reinforcement brackets 7 and 4, so that the full strength of the steel beam can be restored. Can do. According to this fourth example, since the second joint surface of the steel beam reinforcement bracket 7-4 is inclined at an angle θ (15≤Θ≤80) from the axial direction, slag generated during welding is opened. It is discharged to the outside and can be easily welded with good quality.

In general, when the volume of the weld metal 10 increases, it is necessary to perform multilayer build-up welding, and slag remains in the weld metal or defective welding occurs. The probability of occurrence increases. However, in this fourth example, the inclination angle of the second joint surface in the steel beam reinforcement bracket 7-4 is set to the angle Θ (15 ≤ θ≤80) from the axial direction. The volume is unnecessarily large. Therefore, according to the fourth example, the probability of occurrence of defects in the weld metal 10 can be reduced. In the fourth example, the second joint surface of the steel beam reinforcement bracket 7-4 is tilted from the axial direction at an angle θ (15≤ Θ≤80) .An angle Θ is in the range of 30 ° to 70 °. Therefore, it is possible to reduce the probability of occurrence of defects in the weld metal 10 and to reduce the amount of the weld metal 10 to be used, so that the cost can be reduced. In the present invention, the second joint surface at the outer peripheral portion of the steel beam reinforcement metal fitting 7-4 is tilted in the axial direction, and the joint surface of the steel beam web 5-1 is made substantially parallel to the axial direction. The second joint surface at the outer periphery of metal fitting 7-4 is made approximately parallel to the axial direction, and the joint surface of steel beam web 5-1 is at an angle θ (15≤ Θ≤80) from the axial direction. You can also start around ί.

FIG. 5 is a diagram showing a fifth example of the portion indicated by the broken line in FIG.

As shown in FIG. 5, in the steel beam reinforcing bracket 7-5 according to the fifth example, an indirect member 11-1 is fillet welded 9 on the outer peripheral portion thereof. The indirect member 11-1 is fillet welded 9 to the steel beam web 5_1.

Here, in this steel beam reinforcing metal fitting 7_5, the axial length ta is 0.5 to 200.0 times the radial thickness tb. Also, in this steel beam reinforcing bracket 7-5, the length tl from one end of the steel beam web 5-1 to one end of the indirect member 11-1 and the indirect member 11 from the other end of the steel beam web 5_1 are shown. —The length tl to the other end of 1 is not less than 0.7 times the thickness tw of steel beam web 5-1. In the fifth example shown in FIG. 5, the length from one end of the steel beam web 5-1 to one end of the indirect member and the other end of the steel beam web 5-1 to the other end of the indirect member. The length of each is the same (both tl), but this is for convenience of explanation. Therefore, the present invention is limited to a form in which the length from one end of the steel beam web 51 to one end of the indirect member is the same as the length from the other end of the steel beam web 51 to the other end of the indirect member. Is not to be done.

[0032] In this fifth example as well, as in the first example, the allowable force of the weld 9 is such that the steel beam web 5

Since it becomes larger than the allowable power of 1, the full strength of the steel beam can be restored.

FIG. 6 is a diagram illustrating a sixth example of the portion 8 indicated by a broken line in FIG.

As shown in FIG. 6, the steel beam reinforcing bracket 7-6 according to the sixth example has an indirect member 11-2 having a convex portion at one end, fillet welded 9 on its outer peripheral portion. . Then, the convex portion on one end side and the flat surface on the other end side of this indirect member 11-2 are each fillet welded 9 to the steel beam web 5-1.

Here, in the steel beam reinforcing metal fitting 7_6, the axial length ta is 0.5 to 10.0 times the radial thickness tb. Further, in this steel beam reinforcing metal fitting 7-6, the length tl from one end of the steel beam web 5-1 to one end of the indirect member 11-2 and the indirect member 11 from the other end of the steel beam web 5_1 are shown. The length tl to the other end of -2 is not less than 0.7 times the thickness tw of the steel beam web 5-1. In the sixth example shown in FIG. 6, the length from one end of the steel beam web 5-1 to one end of the indirect member and the indirect portion from the other end of the steel beam web 5-1 The length to the other end of the material is the same (both tl), but this is for convenience of explanation. Therefore, in the present invention, the length from one end side of the steel beam web 5-1 to one end of the indirect member is the same as the length from the other end side of the steel beam web 5-1 to the other end of the indirect member. It is not limited to.

[0034] Also in the sixth example, as in the first example, the allowable force of the welded portion 9 is greater than the allowable force of the steel beam web 51. Therefore, the full strength of the steel beam is restored. be able to.

FIG. 7 is a diagram showing a seventh example of the portion 8 indicated by a broken line in FIG.

As shown in Fig. 7, the steel beam reinforcing bracket 7-7 according to the seventh example has a convex portion at one end and a radius of curvature R (0≤R≤ steel beam at the other end. The first joint surface (curved surface) having a web 5—1 thickness tw of 5 times) and the second joint surface (slope) connected to the curved surface and inclined at an angle θ (15≤ Θ≤80) from the axial direction The indirect member 11-3 on which the flat surface is formed is fillet welded 9 to the outer periphery. The first joint surface and the second joint surface on the other end side of the indirect member 11-13 are butt welded 10 to the steel beam web 5-1.

Here, in this steel beam reinforcing bracket 7-7, the length ta in the axial direction is 0.5 to 200.0 times the wall thickness tb in the radial direction. In this steel beam reinforcing bracket 7-7, the length t2 from one end of the steel beam web 5-1 to the other end of the indirect member 11-3 is larger than the thickness tw of the steel beam web 5-1.

According to the seventh example, since all the joint surfaces of the steel beam web 5-1 are welded to the force indirect member 11-3, the full strength of the steel beam can be recovered.

Further, according to the seventh example, since the curved surface is provided on the groove bottom portion 12 of the indirect member 11-3, the weld metal 10 can be easily welded to the groove bottom portion 12. Therefore, according to the seventh example, good quality welding can be easily performed at the groove bottom portion 12. Also, according to the seventh example, the axial direction of the steel beam reinforcing brackets 7-7 can be achieved. Since the second joint surface inclined at an angle θ (15≤Θ≤80) is provided, slag generated during welding is discharged to the outside of the groove, making it easy to perform good quality welding. .

In general, when the volume of the weld metal 10 increases, multilayer build-up welding must be performed, and slag remains in the weld metal or welding failure occurs, resulting in welding. The probability of occurrence of defects in the metal contact 10 increases. However, in this seventh example, the radius of curvature of the first joint surface (curved surface) of the indirect member 11-3 is 0≤ curvature radius R≤ (5 times the thickness tw of the steel beam web 5-1) And the angle of inclination at the second joint surface (inclined plane) is the angle θ (15≤Θ≤80) from the axial direction of the steel beam reinforcement bracket 7-7. It does not grow unnecessarily.

Therefore, according to the seventh example, the force S for reducing the probability of occurrence of defects in the weld metal 10 can be achieved. In the seventh example, a second joint surface (inclined plane) that is inclined at an angle θ (15≤ θ≤ 80) from the axial direction of the steel beam reinforcement brackets 7-7 is provided. In the range of 30 degrees to 70 degrees, the ability to reduce the probability of occurrence of defects in weld metal 10 can be reduced, and the amount of weld metal 10 used can be reduced. You can also.

Further, in the seventh example, a force in which the first joint surface in the indirect member 11-3 is a curved surface and the joint surface in the steel beam web 5-1 is a flat surface. In the present invention, the first joint surface in the indirect member 11-3 The joint surface and the second joint surface can be integrated into the same plane, and the joint surface of the steel beam web 5-1 can be curved. In this case, the steel beam web 5-1 can be provided with an inclined plane that is connected to the curved surface and is inclined at an angle θ (15≤Θ≤80) from the axial direction of the steel beam reinforcing bracket 7-7.

In the seventh example, on the other end of the indirect member 11-3, there is a first joint surface (curved surface) having a radius of curvature R and the curved surface, and the angle θ from the axial direction (15≤ Θ≤80 In the present invention, only a curved surface having a radius of curvature R that does not provide the inclined plane is provided on the other end side of the indirect member 11-3. You can also.

FIG. 8 is a diagram illustrating an eighth example of the portion 8 indicated by a broken line in FIG.

As shown in FIG. 8, the steel beam reinforcing bracket 7-8 according to the eighth example has a convex portion on one end side and is substantially parallel to the radial direction of the steel beam reinforcing bracket 7-8. 1 Indirect member formed with joint surface and second joint surface inclined at angle force θ (15≤ Θ≤ 80) of steel beam reinforcement bracket 7-8 8 11 4 Force fillet welded to outer periphery 9 has been. The first joint surface and the second joint surface of the indirect member 11_4 are butt welded 10 to the steel beam web 5-1. The

Here, in the steel beam reinforcing metal fittings 7-8, the length ta in the axial direction is 0.5 times to 200.0 times the wall thickness tb in the radial direction. In this steel beam reinforcing bracket 7-8, the length t2 from one end of the steel beam web 5-1 to the other end of the indirect member 111-4 is larger than the thickness tw of the steel beam web 5-1. large. In this steel beam reinforcement bracket 7-8, the length L of the first joint surface of the indirect member 1 1 1 4 is 0≤L≤ (the thickness tw of the steel beam web 5-1). Is met.

According to the eighth example, since all the joints of the steel beam web 5-1 are welded to the force indirect members 11-14, the full strength of the steel beam can be recovered.

In general, when the volume of the weld metal 10 increases, it is necessary to perform multilayer build-up welding, and slag remains in the weld metal or defective welding occurs. The probability of occurrence increases. However, in this eighth example, the angle of inclination of the second joint surface of the indirect member 114 is set to the angle θ (15≤Θ≤80) from the axial direction, so the volume of the weld metal 10 is not required. It ’s not going to grow. Therefore, according to the eighth example, the probability of occurrence of defects in the weld metal 10 can be reduced. In the eighth example, the second joint surface of the steel beam reinforcing bracket 7-8 is axially oriented. Force tilted at an angle θ (15≤ Θ≤80) If this angle Θ is in the range of 30 ° to 70 °, the probability of occurrence of defects in the weld metal 10 can be reduced, and the welding used Since the amount of the metal 10 can be reduced, the cost can be reduced. In the eighth example, the joint surface of the indirect member 114 is inclined from the axial direction, and the joint surface of the steel beam web 5-1 is substantially parallel to the axial direction. However, in the present invention, the indirect member 11 It is also possible to make the joint surface in Section 4 approximately parallel to the axial direction and to incline the joint surface in the steel beam web 5-1 at an angle θ (15≤ Θ≤ 80) from the axial direction.

FIG. 9 is a diagram showing a ninth example of the portion 8 indicated by the broken line in FIG.

As shown in Fig. 9, in this ninth example, the first steel beam reinforcement bracket 7-9-11 and the second steel beam reinforcement bracket 7_9_2 are substantially fitted into the through-hole 6 of the SRC beam 1. ing.

First steel beam reinforcement bracket 7-9-1 on one end and second steel beam reinforcement bracket 7-9-2 on the other end The indirect member 11-11 is fillet welded 9 and the indirect member 111-1 is fillet welded 9 to the steel beam web 5-1.

Here, in the steel beam reinforcing metal fittings 7_9_1 and 7_9_2, the length ta in the axial direction is 0.5 times to 200.0 times the thickness tb in the radial direction. In this steel beam reinforcement bracket 7-9_1, 7-9-2, the length tl from one end of the steel beam web 5-1 to one end of the indirect member 11_1 and the other end of the steel beam web 5-1 The length tl from the side to the other end of the indirect member 11-1 is not less than 0.7 times the thickness tw of the steel beam web 5-1. In the ninth example shown in FIG. 9, the length from one end of the steel beam web 5-1 to one end of the indirect member 11-1 and the indirect member from the other end of the steel beam web 5-1 are shown. 11 1 1 Force to the other end is the same (both tl) This is for convenience of explanation. Therefore, the present invention provides a length from one end of the steel beam web 5-1 to one end of the indirect member 111 and from the other end of the steel beam web 5-1 to the other end of the indirect member 111-1. It is not limited to the form with the same length.

[0038] In this ninth example as well, as in the first example, the allowable force of the welded portion 9 is greater than the allowable force of the steel beam web 51. Therefore, the full strength of the steel beam is restored. be able to.

FIG. 10 is a diagram showing a tenth example of the portion 8 indicated by a broken line in FIG.

As shown in Fig. 10, in this tenth example, the first steel beam reinforcement bracket 7-10-1 and the second steel beam reinforcement bracket 7-10-2 are connected to the through-hole 6 of the SRC beam 1. It is almost fitted.

An indirect member 11-2 having a convex portion on one end side is filled with one end of the first steel beam reinforcing bracket 7-10-1 and the other end of the second steel beam reinforcing bracket 7-10-2. Welding 9 is performed, and the convex portion on one end side and the plane on the other end side of the indirect member 11-2 are fillet welded 9 to the steel beam web 5-1 respectively.

Here, in the steel beam reinforcing brackets 7-10-1 and 7-10-2, the length ta in the axial direction is 0.5 to 200.0 times the thickness tb in the radial direction. The steel beam reinforcing brackets 7-10-1 and 7-10-2 have a length tl from one end of the steel beam web 5-1 to one end of the indirect member 11-2 and the steel beam web 5— The length tl and the force from the other end of 1 to the other end of the indirect member 11-2 are not less than 0.7 times the thickness tw of the steel beam web 5-1. In the tenth example shown in FIG. 10, the length from one end of the steel beam web 5-1 to one end of the indirect member 11-2 and the indirect member 11 from the other end of the steel beam web 5-1 are the same. The length to the other end of 2 is the same (both tl This is for convenience of explanation. Therefore, the present invention provides a length from one end of the steel beam web 51 to one end of the indirect member 11 1-2 and a length from the other end of the steel beam web 5-1 to the other end of the indirect member 11-2. Are not limited to the same form.

[0040] Also in the tenth example, as in the first example, the allowable force of the welded portion 9 is the steel beam web.

Since it is greater than the allowable force of 5-1, the total strength of the steel beam can be restored.

FIG. 11 is a diagram showing an eleventh example of portion 8 indicated by a broken line in FIG.

As shown in Fig. 11, in this eleventh example, the first steel beam reinforcement bracket 7-11-11 and the second steel beam reinforcement bracket 7-11-112 are connected to the through-hole 6 of the SRC beam 1. It is almost mated.

One end of the first steel beam reinforcing bracket 7-11 1 1 and the other end of the second steel beam reinforcing bracket 7-11 1 2 are provided with a convex portion on one end side, and on the other end side, A first joint surface (curved surface) with a radius of curvature R (0≤R≤steel beam web 5 5 times 1 thickness tw) and an angle θ (15≤ Θ≤ 80) from the axial direction connected to the curved surface A fillet weld 9 is formed on the indirect member 11-3 formed with the inclined second joint surface (inclined plane). The first joining surface and the second joining surface on the other end side of the indirect member 11-3 are butt welded 10 to the steel beam web 5-1.

Here, in the steel beam reinforcing metal fittings 7-11-1 and 7-11-2, the axial length ta 1S and the radial thickness tb are 0.5 times to 200.0 times. Further, in this steel beam reinforcing bracket 7-11-1, 7-11-2, the length t2 from one end of the steel beam web 5-1 to the other end of the indirect member 11-3 is the steel beam web. Thickness greater than 5-1 tw.

According to the eleventh example, since all the joint surfaces of the steel beam web 5-1 are welded to the force indirect member 11-3, the full strength of the steel beam can be recovered.

Further, according to the eleventh example, since the joint surface of the indirect member 11-3 includes a curved surface, the weld metal 10 can be easily welded to the groove bottom portion 12. Therefore, according to the eleventh example, it is possible to easily perform welding with good quality at the groove bottom portion 12.

In addition, according to the eleventh example, there is provided a second joint surface inclined at an angle θ (15≤Θ≤80) from the axial direction of the steel beam reinforcement brackets 7-11-11 and 7-11-12. Therefore, slag, etc. generated during welding is discharged outside the groove, making it easy to weld with good quality. In general, when the volume of the weld metal 10 increases, it is necessary to perform multilayer build-up welding, and slag remains in the weld metal or defective welding occurs, resulting in defects in the weld metal 10. The probability of occurrence increases. However, in this 11th example, the radius of curvature of the first joint surface (curved surface) of the indirect member 11-3 is 0≤ curvature radius ≤ (5 times the thickness tw of the steel beam web 5-1) In addition, the inclination angle force of the second joint surface (inclined plane) is the angle θ (15≤ Θ≤80) from the axial direction of the steel beam reinforcement brackets 7-11-1 and 7-11-11 Therefore, the volume of the weld metal 10 can become unnecessarily large. Therefore, according to the first example, the probability of occurrence of defects in the weld metal 10 can be reduced. In the eleventh example, the steel beam reinforcement brackets 7-11-11 and 7-11-2 were provided with a second joint surface inclined at an angle θ (15≤Θ≤80). In the range of this angle Θ force ¾0 ° -170 °, the probability of occurrence of defects in the weld metal 10 can be further reduced, and the amount of the weld metal 10 to be used can be reduced, thereby reducing costs. I can do it.

In the eleventh example, the force in which the first joint surface of the indirect member 11-3 is a curved surface and the joint surface of the steel beam web 5-1 is a flat surface. The joining surface and the second joining surface can be made into the same flat surface, and the joining surface in the steel beam web 5-1 can be made into a curved surface. In this case, the steel beam web 5-1 is provided with an inclined plane inclined at an angle Θ (15 degrees ≤ Θ ≤ 80) from the axial direction of the steel beam reinforcement brackets 7-11-1 and 7-11-2. be able to.

In the eleventh example, on the other end of the indirect member 11-3, there is a first joint surface (curved surface) having a radius of curvature R, and an angle θ (15≤ Θ≤80 In the present invention, only a curved surface having a radius of curvature R that does not provide the inclined plane is provided on the other end side of the indirect member 11-3. You can also.

FIG. 12 is a diagram showing a twelfth example of the portion 8 indicated by a broken line in FIG.

As shown in Fig. 12, in this twelfth example, the first steel beam reinforcement bracket 7-12-1 and the second steel beam reinforcement bracket 7-12-12 are placed in the through-hole 6 of the SRC beam 1. It is almost fitted.

1st steel beam reinforcement bracket 7—12—1 and one end of second steel beam reinforcement bracket 7—12—2 Has a convex part at one end and a steel beam reinforcement bracket 7-12-12 and a steel beam reinforcement bracket 7-12-1 and 7-12-12 approximately parallel to the radial direction. 1, 7-12- 2 Axial force Indirect member formed with second joint surface inclined at angle θ (15≤Θ≤80) 11 4 is fillet welded 9 and this indirect member 11 The first joint surface and the second joint surface in 4 are butt welded 10 to the steel beam web 5-1.

Here, in the steel beam reinforcing metal fittings 7-12-1 and 7-12-2, the length ta in the axial direction is 0.5 to 200.0 times the thickness tb in the radial direction. Further, in this steel beam reinforcing bracket 7-1 2-1, 7-12-2, the length t2 from one end of the steel beam web to the other end of the indirect member 11-4 is equal to the steel beam web 5-1. The thickness is larger than tw. Also, in this steel beam reinforcing bracket 7-12-1 and 7-12-12, the length of the first joint surface of the indirect member 11 1-4 4 L force 0≤ L <(the thickness of the steel beam web 5-1 tw ) Is satisfied.

According to the twelfth example, since all the joints of the steel beam web 5-1 are welded to the force indirect members 11-14, the full strength of the steel beam can be recovered.

In general, when the volume of the weld metal 10 increases, it is necessary to perform multilayer build-up welding, and slag remains in the weld metal or defective welding occurs. The probability of occurrence increases. However, in this twelfth example, the angle of inclination of the second joint surface of the indirect member 114 is set to the angle θ (15≤Θ≤80) from the axial direction. Does not grow unnecessarily. Therefore, according to the twelfth example, the probability of occurrence of defects in the weld metal 10 can be reduced.

In the twelfth example, the force that tilts the second joint surface of steel beam reinforcement brackets 7-12-1 and 7-12-2 from the axial direction at an angle θ (15≤ Θ≤ 80). When Θ is in the range of 30 degrees to 70 degrees, the probability of occurrence of defects in the weld zone can be reduced, and the amount of weld metal 10 used can be reduced, thereby reducing costs. That's it.

In the twelfth example, the joint surface of the indirect member 11-14 is tilted in the axial direction, and the joint surface of the steel beam web 5-1 is made substantially parallel to the axial direction. However, in the present invention, the indirect member 11 1 The joint surface at 4 is substantially parallel to the axial direction, and the steel beam web 5-1 The joint surface can also be tilted at an angle θ (15≤Θ≤80) from the axial direction.

[0043] In the embodiment of the present invention described above, the steel beam reinforcing metal fitting is substantially fitted into the through hole provided in the steel beam web of the steel beam in the SRC structure, and the fitted steel frame is fitted. We decided to reinforce the steel beam in SRC by welding the beam reinforcement bracket to the steel beam web. However, the steel beam reinforced by the steel beam reinforcement bracket according to the present invention is limited to the steel beam in the SRC structure. It goes without saying that it is not a thing. Therefore, in the present invention, for example, the steel beam reinforcing bracket is substantially fitted into the through hole in the steel beam web of the steel beam in the S structure, and the fitted steel beam reinforcing bracket is provided on the steel beam web. The steel beam in the S structure can be compensated by welding to the peripheral edge of the through hole.

(Additional Notes) The present invention has the following additional notes.

[0045] (Appendix 1)

In the steel beam reinforcement bracket that is approximately fitted into the through hole of the steel beam,

The outer periphery is fillet welded to the steel beam web,

The axial length is 0.5 times 1 to 200.0 times the radial wall thickness,

The length from one end side of the steel beam web to one end of the outer peripheral portion and the length from the other end side of the steel beam web to the other end of the outer peripheral portion are not less than 0.7 times the thickness of the steel beam web. Is,

Steel beam reinforcing metal fittings characterized by that.

(Appendix 2)

The outer periphery is butt welded to the steel beam web;

The axial length is 0.5 times 1 to 200.0 times the radial wall thickness,

The length from one end side of the steel beam web to the other end of the outer peripheral portion is larger than the thickness of the steel beam web.

A curved surface (0≤curvature radius≤5 times the thickness of the steel beam web) is included in the joint surface with the steel beam web at the outer periphery,

Steel beam reinforcing metal fittings characterized by that. (Appendix 3)

The outer periphery is butt welded to the steel beam web;

The axial length is 0.5 times 1 to 200.0 times the radial wall thickness,

A first joint surface (0≤length≤thickness of the steel beam web) substantially parallel to the radial direction is joined to the joint surface with the steel beam web in the outer periphery, and an angle Θ (15≤ from the axial direction)

A second joint surface inclined at Θ ≤ 80),

Steel beam reinforcing metal fittings characterized by that.

(Appendix 4)

The axial length is 0.5 times 1 to 200.0 times the radial wall thickness,

An indirect member fillet welded to the steel beam web is fillet welded to the outer periphery, and the length from one end side of the steel beam web to one end of the indirect member and the other end side of the steel beam web. The length to the other end of the indirect member is 0 of the thickness of the steel beam web.

More than 7 times,

Steel beam reinforcing metal fittings characterized by that.

(Appendix 5)

The axial length is 0.5 times 1 to 200.0 times the radial wall thickness,

An indirect member butt welded to the steel beam web is fillet welded to the outer periphery, and the length from one end of the steel beam web to the other end of the indirect member is larger than the thickness of the steel beam web. Big

The joint surface of the indirect member with the steel beam web includes a curved surface (0≤radius of curvature≤5 times the thickness of the steel beam web),

Steel beam reinforcing metal fittings characterized by that.

(Appendix 6) In the steel beam reinforcing bracket that is almost fitted in the through hole of the steel beam, the axial length is 0.5 times 1 to 200.0 times the radial thickness,

A first joint surface (0≤length≤thickness of the steel beam web) substantially parallel to the radial direction is formed on the joint surface of the indirect member with the steel beam web, and an angle Θ (15

≤ Θ ≤ 80) and the second joint surface tilted,

Steel beam reinforcing metal fittings characterized by that.

(Appendix 7)

In a pair of steel beam reinforcement brackets that are substantially fitted in the through-holes of the steel beam and are composed of a first steel beam reinforcement bracket and a second steel beam reinforcement bracket,

The first steel beam reinforcing metal fitting and the second steel beam reinforcing metal fitting have an axial length of 0.5 to 200.0 times the radial thickness,

An indirect member fillet welded to the steel beam web is fillet welded to one end of the first steel beam reinforcement metal fitting and the other end of the second steel beam reinforcement metal fitting,

The length from one end side of the steel beam web to one end of the indirect member and the length from the other end side of the steel beam web to the other end of the indirect member are 0.7 of the thickness of the steel beam web. More than double,

Steel beam reinforcing metal fittings characterized by that.

(Appendix 8)

An indirect member butt welded to the steel beam web is fillet welded to one end of the first steel beam reinforcing bracket and the other end of the second steel beam reinforcing bracket,

The length from one end of the steel beam web to the other end of the indirect member is the steel beam cage. Greater than the thickness of Eb

Steel beam reinforcing metal fittings characterized by that.

(Appendix 9)

The length from one end side of the steel beam web to the other end of the indirect member is larger than the thickness of the steel beam web.

A first joint surface (0≤length≤thickness of the steel beam web) substantially parallel to the radial direction and an angle Θ (15≤15≤) from the axial direction on the joint surface of the indirect member with the steel beam web

Θ≤80) and the second joint surface inclined,

Steel beam reinforcing metal fittings characterized by that.

(Appendix 10)

Supplementary Note 1 In the steel beam reinforcing bracket according to any one of Supplementary notes 9, the volume thereof is 1.0 to 3.0 times the volume of the space formed inside the through hole. Steel beam reinforcing metal fittings characterized by being.

(Appendix 11)

8. The steel beam reinforcing bracket according to appendix 1, 4, or 7, wherein a flange portion having an outer diameter larger than that of the through hole is formed on one side of the outer peripheral portion in the axial direction.

(Appendix 12)

The flange portion having an outer diameter larger than that of the through hole is formed on one side of the outer peripheral portion in the axial direction, and the outer peripheral portion is gradually reduced in diameter toward the other end side in the axial direction. Steel beam reinforcing bracket according to 1, 4, or 7.

(Appendix 13)

A flange portion having an outer diameter larger than that of the through hole is formed on one side in the axial direction of the outer peripheral portion, and the length from the minimum outer diameter portion of the outer peripheral portion to the outer periphery of the flange portion is the minimum outer diameter of the outer peripheral portion. The steel beam reinforcement bracket according to appendix 1, 4, or 7, characterized in that the length in the axial direction of the flange portion is less than half the axial length of the steel beam reinforcement bracket. .

(Appendix 14)

A flange portion having an outer diameter larger than the through hole is formed on one side in the axial direction of the outer peripheral portion, and the outer peripheral portion is gradually reduced in diameter toward the other end side in the axial direction,

The length from the minimum outer diameter portion of the outer peripheral portion to the outer periphery of the flange portion is less than or equal to half of the minimum outer diameter of the outer peripheral portion, and the axial length of the flange portion is set in the axial direction of the steel beam reinforcing bracket. The steel beam reinforcement bracket according to appendix 1, 4 or 7, characterized in that it is less than half the length.

(Appendix 15)

The steel beam reinforcing bracket according to any one of appendices 1 to 9, further comprising an inner diameter of 0.8 times or less of a length in the height direction of the steel beam.

(Appendix 16)

8. The steel beam reinforcing bracket according to appendix 1, 4, or 7, wherein three or more positioning projections that directly contact the inner edge portion of the through hole are formed on the outer peripheral portion.

(Appendix 17)

The steel beam reinforcing bracket according to appendix 2, 3, 5, 6, 8, or 9, wherein the indirect member is formed with three or more positioning projections that directly contact the inner edge of the through hole. (Appendix 18)

Appendices to the peripheries of the through holes formed in the steel beam that forms the column steel beam joint structure 1, 4, Or a steel beam through-hole reinforcing structure formed by welding and fixing the outer periphery of the steel beam reinforcing metal fitting according to claim 7, from a joint position between the column and the steel beam to an axis of the steel beam reinforcing structure A steel beam through-hole reinforcing structure characterized in that the distance is not more than twice the length in the height direction of the steel beam.

(Appendix 19)

The indirect member welded to the outer periphery of the steel beam reinforcement bracket described in appendix 2, 3, 5, 6, 8, or 9 is added to the periphery of the through hole formed in the steel beam that forms the column steel beam joint structure. A steel beam through-hole reinforcement structure formed by welding and fixing, wherein the distance from the joining position of the column and the steel beam to the axis of the steel beam reinforcement structure is the length in the height direction of the steel beam. A steel beam through-hole reinforcement structure characterized by being 2 times or less.

Industrial applicability

The steel beam reinforcing bracket according to the present invention can be used for a steel beam in an S structure or a steel beam in an SRC structure.

Claims

The scope of the claims

[1] In a steel beam reinforcement bracket that is approximately fitted into the through hole of a steel beam,

The outer periphery is fillet welded to the steel beam web,

The axial length is 0.5 times 1 to 200.0 times the radial wall thickness,

Steel beam reinforcing metal fittings characterized by that.

[2] In the steel beam reinforcing bracket that is almost fitted in the through hole of the steel beam,

The outer periphery is butt welded to the steel beam web;

The axial length is 0.5 times 1 to 200.0 times the radial wall thickness,

A curved surface (0≤curvature radius≤5 times the thickness of the steel beam web) is included in the joint surface with the steel beam web at the outer periphery.

Steel beam reinforcing metal fittings characterized by that.

[3] In the steel beam reinforcing bracket that is almost fitted in the through hole of the steel beam,

The outer periphery is butt welded to the steel beam web;

The axial length is 0.5 times 1 to 200.0 times the radial wall thickness,

A first joint surface substantially parallel to the radial direction (0≤length <thickness of the steel beam web) and an angle θ from the axial direction (15≤15≤

A second joint surface inclined at Θ ≤ 80),

Steel beam reinforcing metal fittings characterized by that.

[4] In the steel beam reinforcing bracket that is almost fitted in the through hole of the steel beam,

The axial length is 0.5 times 1 to 200.0 times the radial wall thickness,

An indirect member that is fillet welded to the steel beam web is fillet welded to the outer periphery, The length from one end side of the steel beam web to one end of the indirect member and the length from the other end side of the steel beam web to the other end of the indirect member are the thickness of the steel beam web.

More than 7 times,

Steel beam reinforcing metal fittings characterized by that.

[5] In the steel beam reinforcement bracket that is approximately fitted into the through hole of the steel beam,

The axial length is 0.5 times 1 to 200.0 times the radial wall thickness,

Steel beam reinforcing metal fittings characterized by that.

[6] In the steel beam reinforcement bracket that is approximately fitted into the through hole of the steel beam,

The axial length is 0.5 times 1 to 200.0 times the radial wall thickness,

The joint surface of the indirect member with the steel beam web is connected to a first joint surface substantially parallel to the radial direction (0≤length <thickness of the steel beam web) and an angle Θ (15 ≤ Θ ≤ 80) with a second joint surface inclined,

Steel beam reinforcing metal fittings characterized by that.

[7] In a pair of steel beam reinforcement brackets that are substantially fitted in the through-holes of the steel beam and are composed of a first steel beam reinforcement bracket and a second steel beam reinforcement bracket,

The length from one end of the steel beam web to one end of the indirect member and the steel beam web The length from the other end of the hub to the other end of the indirect member is not less than 0.7 times the thickness of the steel beam web.

Steel beam reinforcing metal fittings characterized by that.

[8] In a pair of steel beam reinforcement brackets, each of which is a first steel beam reinforcement bracket and a second steel beam reinforcement bracket, which are substantially fitted in the through hole of the steel beam,

Steel beam reinforcing metal fittings characterized by that.

[9] In a pair of steel beam reinforcement brackets that are substantially fitted in the through-holes of the steel beam and are composed of a first steel beam reinforcement bracket and a second steel beam reinforcement bracket,

Steel beam reinforcing metal fittings characterized by that.