JP2014020162A - Beam reinforcing metallic material and beam reinforcing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beam reinforcing metallic material and a beam reinforcing structure capable of preventing a significant reduction in the reinforcing efficiency and of preventing an increase in the weight and cost of the beam reinforcing metallic material when a through-hole formed in the web of a steel beam is shaped approximately rectangular.SOLUTION: A beam reinforcing metallic material 24, which is provided in an approximately rectangular through-hole 22b formed in a web 22a of a steel beam 22, has an opening 24a. Its outside and inside shapes in cross section in a direction approximately perpendicular to the axis of the opening 24a are approximately rectangular.

Description

  The present invention relates to a beam reinforcing metal and a beam reinforcing structure used to reinforce a steel beam in which a through-hole penetrating in the thickness direction is formed in a web.

  As a conventional beam reinforcing structure, as shown in FIGS. 11 and 12, the opening 4a formed in the web 4a of the steel beam 4 has a circular through hole 4b, and the opening 6a has a circular opening 6a. The cylindrical beam reinforcement metal fitting 6 is fitted, and the welded portion M, that is, the outer peripheral surface 6b of the beam reinforcement metal fitting 6 and the portion near the through hole 4b on the left side of the web 4a in the drawing are welded. Thus, there was a beam reinforcing structure 2 for fixing the beam reinforcing hardware 6 to the web 4a (see Patent Document 1).

  In such a conventional beam reinforcing structure 2, since the thick portion around the through hole 4 b of the web 4 a is reinforced by the beam reinforcing hardware 6, the strength of the steel beam 4 due to the formation of the through hole 4 b in the web 4 a. It has become possible to prevent a decrease in the amount.

JP 2007-009419 A

  However, as shown in FIG. 12, the conventional beam reinforcing structure 2 has a beam reinforcing metal 6 in a cylindrical shape, that is, in a cross section substantially perpendicular to the axis of the opening 6a of the beam reinforcing metal 6. Since both the outer shape and the inner shape of the hardware 6 are formed in a circular shape, the reinforcing efficiency is improved when the through-hole formed in the web 4a is formed in a substantially rectangular shape instead of a circular shape. There was a problem of significant reduction.

  That is, when the through-hole formed in the web 4a is formed in a substantially rectangular shape, the beam reinforcing hardware 6 formed in the circular shape in the conventional beam reinforcing structure 2 has the outer peripheral surface 6b and the web. Since there are four substantially triangular gaps (four corners) between the through hole of 4a, the thick portion around the through hole of the web 4a cannot be sufficiently reinforced. there were.

  Further, as a conventional beam reinforcing structure different from the beam reinforcing structure 2, there is a second conventional beam reinforcing structure 10 shown in FIG.

  This second conventional beam reinforcing structure 10 is an annular beam having a circular opening 14a on one surface 12c (the right surface in the drawing) of the front and back surfaces of the web 12a of the steel beam 12. The end surface 14c of the reinforcing metal piece 14 is brought into contact with the welded portion M, that is, the outer peripheral surface 14b of the beam reinforcing metal piece 14 and the portion near the through hole 12b of the surface 12c of the web 12a, thereby reinforcing the beam. The hardware 14 was fixed integrally to the web 12a.

  In the second conventional beam reinforcing structure 10, similarly to the beam reinforcing structure 2, since the beam reinforcing hardware 14 is formed in a cylindrical shape, the through-hole 12 b formed in the web 12 a has a circular shape. However, when it is formed in a substantially rectangular shape, there are the following problems.

  That is, when the through-hole 12b formed in the web 12a is formed in a substantially rectangular shape, the beam reinforcing hardware 14 in the second conventional beam reinforcing structure 10 has an inner diameter dimension of the opening portion 14a. It is necessary to increase the size of the through hole 12b of the substantially rectangular shape 12a to a size that can completely surround the corners. For this reason, there existed a problem that the external dimension of the part beam reinforcement metal fitting 14 became remarkably large.

  In addition, when the outer dimensions of the beam reinforcing hardware 14 are increased, the material is increased by the increase in the outer dimensions, leading to an increase in the weight of the beam reinforcing hardware 14, and the manufacturing cost such as an increase in material costs is also increased. For this reason, there is a problem in that the price of the beam reinforcing hardware 14 is also increased.

  Therefore, in view of the above problems, the present invention can prevent the reinforcement efficiency from being significantly lowered even if the through hole formed in the steel beam web has a substantially rectangular shape. It is an object of the present invention to provide a beam reinforcing hardware and a beam reinforcing structure capable of preventing an increase in weight and price.

In order to solve the above problems, a beam reinforcing hardware according to the present invention is:
In the beam reinforcement hardware provided in the substantially rectangular through hole formed in the steel beam web,
It has an opening, and an outer shape and an inner shape in a cross section in a direction substantially perpendicular to the axis of the opening are formed in a substantially rectangular shape.

In addition, the beam reinforcing hardware according to the present invention is:
The outer shape and the inner shape are substantially similar to each other.

In addition, the beam reinforcing hardware according to the present invention is:
Positioning means that protrudes outward from the outer surface of the beam reinforcing metal member is provided.

In addition, in order to solve the above problems, the beam reinforcing structure according to the present invention is:
In the beam reinforcement structure in which the beam reinforcement hardware is provided in the substantially rectangular through hole formed in the steel beam web,
The beam reinforcing hardware has an opening, and an outer shape and an inner shape in a cross section substantially perpendicular to the axis of the opening are formed in a substantially rectangular shape,
The beam reinforcing hardware is provided on one or both of the front and back surfaces of the web.

In addition, in order to solve the above problems, the beam reinforcing structure according to the present invention is:
In the beam reinforcement structure in which the beam reinforcement hardware is provided in the substantially rectangular through hole formed in the steel beam web,
The beam reinforcing hardware has an opening, and an outer shape and an inner shape in a cross section substantially perpendicular to the axis of the opening are formed in a substantially rectangular shape,
The beam reinforcing metal fitting is fitted into the through hole of the web.

According to such a beam reinforcing hardware of the present invention,
In the beam reinforcement hardware provided in the substantially rectangular through hole formed in the steel beam web,
By having an opening, the outer shape and the inner shape in a cross section in a direction substantially perpendicular to the axis of the opening are formed in a substantially rectangular shape,
Even if the through-hole formed in the steel beam web has a substantially rectangular shape, it is possible to prevent the reinforcement efficiency from being significantly lowered and to prevent the beam reinforcement hardware from becoming heavy and expensive. .

Moreover, according to the beam reinforcing structure of the present invention,
In the beam reinforcement structure in which the beam reinforcement hardware is provided in the substantially rectangular through hole formed in the steel beam web,
The beam reinforcing hardware has an opening, and an outer shape and an inner shape in a cross section substantially perpendicular to the axis of the opening are formed in a substantially rectangular shape,
The beam reinforcing hardware is provided on one or both of the front and back sides of the web,
Even if the through-hole formed in the steel beam web has a substantially rectangular shape, it is possible to prevent the reinforcement efficiency from being significantly lowered and to prevent the beam reinforcement hardware from becoming heavy and expensive. .

Moreover, according to the beam reinforcing structure of the present invention,
In the beam reinforcement structure in which the beam reinforcement hardware is provided in the substantially rectangular through hole formed in the steel beam web,
The beam reinforcing hardware has an opening, and an outer shape and an inner shape in a cross section substantially perpendicular to the axis of the opening are formed in a substantially rectangular shape,
The beam reinforcement hardware is fitted into the through hole of the web,
Even if the through-hole formed in the steel beam web has a substantially rectangular shape, it is possible to prevent the reinforcement efficiency from being significantly lowered and to prevent the beam reinforcement hardware from becoming heavy and expensive. .

It is a figure which shows the beam reinforcement structure 20 which concerns on the 1st Embodiment of this invention, Comprising: It is the BB arrow sectional drawing of the beam reinforcement structure 20 shown in FIG. It is the partial front view which shows the beam reinforcement structure 20 in FIG. It is a figure which shows the beam reinforcement structure 40 which concerns on the 2nd Embodiment of this invention, Comprising: It is CC sectional view taken on the line of the beam reinforcement structure 40 shown in FIG. It is the partial front view which shows the beam reinforcement structure 40 in FIG. It is a figure which shows the beam reinforcement structure 60 which concerns on the 3rd Embodiment of this invention, Comprising: It is the DD sectional view taken on the line of the beam reinforcement structure 60 shown in FIG. It is the partial front view which shows the beam reinforcement structure 60 in FIG. It is side surface sectional drawing which shows the beam reinforcement structure 80 which concerns on the 4th Embodiment of this invention. It is side surface sectional drawing which shows the beam reinforcement structure 100 which concerns on the 5th Embodiment of this invention. It is side surface sectional drawing which shows the beam reinforcement structure 120 which concerns on the 6th Embodiment of this invention. It is side surface sectional drawing which shows the beam reinforcement structure 140 which concerns on the 7th Embodiment of this invention. It is a figure which shows the conventional beam reinforcement structure 2, Comprising: It is AA arrow sectional drawing of the beam reinforcement structure 2 shown in FIG. It is the partial front view which shows the beam reinforcement structure 2 in FIG. It is the side sectional view showing the 2nd conventional beam reinforcement structure 10.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the beam reinforcement metal fitting and beam reinforcement structure which concern on this invention is demonstrated concretely based on drawing.

  1 and 2 are views referred to for explaining the beam reinforcing hardware 24 and the beam reinforcing structure 20 according to the first embodiment of the present invention.

  As shown in FIG. 1, the beam reinforcing structure 20 according to the present embodiment includes a steel beam 22 in which a rectangular through hole 22b (see FIG. 2) is formed in the web 22a, and one of both front and back surfaces of the web 22a. It is disposed only on the surface 22c (the surface on the right side in the figure), and includes a rectangular tube-shaped beam reinforcing metal member 24 to which the welded portion M is welded and fixed integrally to the web 22a.

  The beam reinforcing hardware 24 is formed in a substantially circular shape by cutting a square steel pipe in a direction substantially perpendicular to the axis thereof. As shown in FIG. 2, the opening shape is a rectangular opening 24a and four outer side surfaces. It is formed in a square ring having 24b.

  The beam reinforcing hardware 24 is formed such that the outer shape and the inner shape of the cross section in the direction substantially perpendicular to the axis of the opening 24a are both rectangular, and the shapes are substantially similar to each other. Yes.

  As shown in FIG. 1, the beam reinforcing hardware 24 is arranged with its end face 24 d in contact with the vicinity of the through hole 22 b on one side 22 c (the right side in the drawing) of the front and back surfaces of the web 22 a. At this time, as shown in FIG. 2, the opening 24a of the beam reinforcing metal piece 24 is formed in the same shape as the through hole 22b of the web 22a, but slightly larger than the size of the through hole 22b. In addition, the inner peripheral surface of the opening 24a is formed through a step between the inner peripheral surface of the through hole 22b.

  A tapered portion 24c (groove) is formed on the outer peripheral portion on the end surface 24d side of the beam reinforcing metal 24, and the groove size in the vertical direction in FIG. 1 of the tapered portion 24c approaches the end surface 24d side. The outer surface 24b is inclined so as to gradually increase from the outer shape.

  The beam reinforcing metal 24 is integrally fixed to the web 22a by being welded to the web 22a in the vicinity of the outer periphery of the contact portion between the tapered portion 24c and the beam reinforcing metal 24 of the web 22a.

  In the beam reinforcing metal 24 and the beam reinforcing structure 20 according to the present embodiment, the conventional beam reinforcing structure 2 is formed between the through hole 22b of the web 22a and the beam reinforcing metal 24. Since the substantially triangular large gap is not formed, the thick portion around the through hole 22b of the web 22a can be efficiently reinforced.

  Further, in the beam reinforcing hardware 24 and the beam reinforcing structure 20 according to the present embodiment, the opening shape of the opening 24a of the beam reinforcing hardware 24 is formed in the same shape as the through hole 22b of the web 22a. Since it is formed slightly larger than the size of 22b, it is possible to prevent the outer shape of the beam reinforcing hardware 24 from becoming large and to prevent the beam reinforcing hardware 24 from becoming heavy and expensive. .

  Therefore, as described above, according to the beam reinforcing hardware 24 and the beam reinforcing structure 20 according to the present embodiment, even though the through hole 22b formed in the web 22a of the steel beam 22 is substantially rectangular, It is possible to prevent the reinforcing efficiency from being significantly lowered and to prevent the beam reinforcing hardware 24 from becoming heavy and expensive.

  Moreover, since the beam reinforcement hardware 24 which concerns on this Embodiment is formed from the raw material of a square steel pipe, it can prevent the price increase.

  Further, in the beam reinforcing structure 20 according to the present embodiment, since the opening shape of the opening 24a of the beam reinforcing metal 24 and the through hole 22b of the web 22a is formed in a substantially rectangular shape, the outer shape of the beam reinforcing metal 24 Even if it is not made large, pipes having a substantially rectangular cross section such as an exhaust duct can be passed, so that it is possible to prevent the beam reinforcing hardware 24 from becoming heavy and expensive.

  FIG. 3 and FIG. 4 are diagrams which are referred to for explaining the beam reinforcing hardware 44 and the beam reinforcing structure 40 according to the second embodiment of the present invention.

  As shown in FIG. 3, the beam reinforcing structure 40 according to the present embodiment includes a steel beam 42 in which a rectangular through hole 42b (see FIG. 4) is formed in a web 42a, and four outer side surfaces 44b thereof. A rectangular tube-shaped beam reinforcing metal 44 is provided which is fitted into the through-hole 42b of the web 42a and is welded at the weld portion M and is integrally fixed to the web 42a.

  The beam reinforcing hardware 44 is formed by cutting a square steel pipe in a direction substantially perpendicular to the axis thereof, and as shown in FIG. 4, it is formed in a short rectangular tube shape having an opening 44a and four outer surfaces 44b. Has been. The outer shape and the inner shape of the beam reinforcing hardware 44 are both formed in a rectangular shape, and are formed in a shape that is substantially similar to each other.

  As shown in FIG. 3, the beam reinforcing metal piece 44 is inserted into the through hole 42b of the web 42a, and the position of the central portion of the outer side surface 44b in the axial direction (horizontal direction in the figure) is within the through hole 42b of the web 42a. It arrange | positions and it is integrally fixed to the web 42a by welding the welding part M between each other.

  At this time, the welded portion M between the beam reinforcing metal 44 and the web 42a is formed along the straight portions of the four outer side surfaces 44b of the beam reinforcing metal 44 as shown in FIG.

  Also with the beam reinforcing hardware 44 and the beam reinforcing structure 40 according to the present embodiment, the web 42a of the steel beam 42 is added to the web 42a of the steel beam 42 similarly to the beam reinforcing hardware 24 and the beam reinforcing structure 20 according to the first embodiment. Even if the formed through hole 42b has a substantially rectangular shape, it is possible to prevent the reinforcing efficiency from being significantly lowered and to prevent the beam reinforcing metal 44 from being increased in weight and cost.

  Moreover, since the beam reinforcement structure 40 according to the present embodiment is formed in a straight line such that the welded portion M of the beam reinforcement metal 44 and the web 42a is along each of the four outer side surfaces 44b of the beam reinforcement metal 44, It is possible to easily perform the welding operation of the welded part M, and to prevent an increase in manufacturing cost. For this reason, an increase in the price of the beam reinforcing hardware 44 can be prevented.

  FIGS. 5 and 6 are views referred to for explaining the beam reinforcing hardware 64 and the beam reinforcing structure 60 according to the third embodiment of the present invention.

  The beam reinforcing structure 60 according to the present embodiment includes a tapered portion 62c between one surface 62e (the left surface in FIG. 5) of the front and back surfaces of the web 62a of the steel beam 62 and the inner peripheral surface of the through hole 62b. In the point where (groove) is formed, and a plurality of protrusions 64d (positioning means) contacting the web 62a are fixedly provided on the outer surface 64b of the main body 64c of the beam reinforcing metal 64. This is different from the beam reinforcing structure 40 according to the second embodiment.

  As shown in FIG. 5, the beam reinforcing structure 60 according to the present embodiment includes a steel beam 62 in which a rectangular through hole 62 b (see FIG. 6) is formed in the web 62 a and its four outer side surfaces 64 b. Are fitted into the four inner side surfaces of the through-hole 62b of the web 62a, and the side surface 64e of the projection 64d is brought into contact with the other surface 62d (the right side surface in FIG. 5) of the web 62a, so that the weld M Are welded to the web 62a so as to be integrally fixed to the beam 62.

  The main body portion 64c of the beam reinforcing hardware 64 is formed in the same shape as the beam reinforcing hardware 44 according to the second embodiment.

  That is, the main body portion 64c of the beam reinforcing hardware 64 is formed by cutting in a direction substantially perpendicular to the axis of the square steel pipe, and as shown in FIG. 6, has a short portion having an opening 64a and four outer surfaces 64b. It is formed in a rectangular tube shape.

  The main body portion 64c of the beam reinforcing metal piece 64 has an outer shape and an inner shape in a cross section substantially perpendicular to the axis line of the opening portion 64a, both of which are formed in a rectangular shape. Is formed.

  As shown in FIG. 6, the beam reinforcing metal 64 has one protrusion 64d on the upper outer surface 64b of the main body 64c and two protrusions 64d on the lower outer surface 64c of the figure. It is fixed integrally by welding or the like.

  As shown in FIG. 5, the beam reinforcement hardware 64 is inserted into the through hole 62b of the web 62a, the side surface 64e of the projection 64d contacts the vicinity of the through hole 62b of the other surface 62d of the web 62a, and The position of the central portion of the outer surface 64b of the main body portion 64c in the axial direction (left-right direction in the drawing) is arranged in the through-hole 62b of the web 62a so as to be fitted.

  A tapered portion 62c (groove) is formed between the through hole 62b of the web 62a and one surface 62e thereof, and the vertical groove size of the opening shape in FIG. As it approaches the surface 62e side, the outer shape of the outer surface 64b gradually increases.

  The beam reinforcement metal 64 is integrally fixed to the web 62a by welding the welded portion M between the outer surface 64b of the main body 64c and the taper 62c of the web 62a. Has been.

  The beam reinforcing metal 64 and the beam reinforcing structure 60 according to the present embodiment also provide the web 62a of the steel beam 62 with the same as the beam reinforcing metal 24 and the beam reinforcing structure 20 according to the first embodiment. Even if the formed through-hole 62b has a substantially rectangular shape, it is possible to prevent the reinforcement efficiency from being significantly lowered, and to prevent the beam reinforcement hardware 64 from becoming heavy and expensive.

  Further, in the beam reinforcing structure 60 according to the present embodiment, a plurality of protrusions 64d (positioning means) are provided on the outer side surface 64b of the main body portion 64c of the beam reinforcing hardware 64, so that the steel beam of the beam reinforcing hardware 64 is provided. Positioning work in the axial direction of the through hole 62b with respect to 62 can be easily performed, and an increase in manufacturing cost can be prevented. For this reason, an increase in the price of the beam reinforcing hardware 64 can be prevented.

  FIG. 7 is a diagram which is referred to for explaining the beam reinforcing hardware 84 and the beam reinforcing structure 80 according to the fourth embodiment of the present invention.

  The beam reinforcing structure 80 according to the present embodiment is provided with a projecting portion 84d that protrudes radially outward in a triangular mountain shape on the outer surface 84b of the main body portion 84c of the beam reinforcing hardware 84; The protruding portion 84d is different from the beam reinforcing structure 40 according to the second embodiment in that the top of the protruding portion 84d is fitted into the through hole 42b of the web 42a.

  That is, the beam reinforcing structure 80 includes a steel beam 42 in which a rectangular through hole 42b (see FIG. 4) is formed in the web 42a shown in FIG. 7, and a top portion of the protruding portion 84d in the through hole 42b of the web 42a. , And a welded portion M is welded to be integrally fixed to the web 42a.

  The protruding portion 84d of the beam reinforcing hardware 84 is integrally formed with the main body portion 84c by casting or the like. In FIG. 7, for convenience of explanation, the main body portion 84 c and the protruding portion 84 d are separately shown by a two-dot chain line in the figure, but actually they are integrated with each other.

  The main body portion 84c of the beam reinforcement hardware 84 is formed in a shape similar to that of the beam reinforcement hardware 44 according to the second embodiment, and the opening 84a and the four outer portions are similar to the beam reinforcement hardware 44 shown in FIG. It is formed in a rectangular tube shape having a side surface 84b.

  The main body portion 84c of the beam reinforcing metal member 84 is formed such that both the outer shape and the inner shape in a cross section substantially perpendicular to the axis line of the opening portion 84a are formed in a rectangular shape, and they are substantially similar to each other. Is formed.

  As shown in FIG. 7, the projecting portion 84d of the beam reinforcing hardware 84 is formed with tapered portions 84e (grooves) on both the left and right sides in the drawing, and the cross-sectional shape thereof is vertical from the outer surface 84b of the main body portion 84c. It is formed in a substantially isosceles triangle shape having a top at a position distant from the direction.

  The beam reinforcing metal 84 is integrally fixed to the web 42a by welding a groove between each of the two tapered portions 82e of the protruding portion 84d and the opening 42b of the web 42a. .

  The beam reinforcing hardware 84 and the beam reinforcing structure 80 according to the present embodiment also provide the web 42a of the steel beam 42 with the same as the beam reinforcing hardware 24 and the beam reinforcing structure 20 according to the first embodiment. Even if the formed through hole 42b has a substantially rectangular shape, it is possible to prevent the reinforcing efficiency from being significantly lowered, and to prevent the beam reinforcing hardware 84 from being increased in weight and cost.

  FIG. 8 is a view referred to for explaining the beam reinforcing metal piece 104 and the beam reinforcing structure 100 according to the fifth embodiment of the present invention.

  The beam reinforcing structure 100 according to the present embodiment is similar to the beam reinforcing structure 40 according to the second embodiment in that a stepped protrusion 104d is provided on the outer side surface 104b of the main body 104c of the beam reinforcing hardware 104. Is different.

  That is, as shown in FIG. 8, the beam reinforcing structure 100 includes a steel beam 42 in which a rectangular through hole 42b (see FIG. 4) is formed in the web 42a, and a step side surface 104f of its own stepped protrusion 104d. (Positioning means) is brought into contact with the side surface 42c of the web 42a, the stepped surface 104e of the stepped protrusion 104d is fitted into the through hole 42b of the web 42a, and the weld M is welded to be integrated with the web 42a. The beam reinforcement metal fitting 104 of the substantially square tube shape fixed to is provided.

  The beam-reinforcing metal fitting 104 is integrally formed by casting or the like, with a rectangular tube-shaped main body portion 104c and a stepped flange-like stepped portion 104d protruding outward in the radial direction from the outer surface 104b of the main body portion 104c. . In FIG. 8, for convenience of explanation, the main body 104c and the stepped protrusion 104d are shown separated by a two-dot chain line in the figure, but actually they are integrated with each other.

  The main body portion 104c of the beam reinforcing hardware 104 is formed in a short rectangular tube shape having an opening portion 104a having a rectangular opening shape and an outer surface 104b having four rectangular sides. The outer shape and the inner shape in a cross section in a direction substantially perpendicular to the axis of the through-hole 104a are both formed in a rectangular shape, and they are formed in a shape that is substantially similar to each other.

  As shown in FIG. 8, the stepped protrusion 104d of the beam reinforcing hardware 104 protrudes in a stepped flange shape radially outward from the outer surface 104b. The stepped protrusion 104d includes a stepped surface 104e, A step side surface 104f is formed standing on the right side of the step surface 104e in the drawing. A tapered portion 104g (groove) is formed on the left side of the stepped surface 104e of the stepped protrusion 104d in the drawing.

  The beam reinforcing hardware 104 is inserted into the through hole 42b of the web 42a, the stepped surface 104e of the stepped protrusion 104d is fitted into the through hole 42b of the web 42a, and the stepped side surface 104f of the stepped protrusion 104d. Is in contact with the surface 42c on the right side in FIG. 8 of the web 42a.

  The beam reinforcing metal 104 is integrally fixed to the web 42a by welding a groove between the tapered portion 104g of the stepped protrusion 104d and the inner peripheral surface of the through hole 42b of the web 42a. ing.

  Also with the beam reinforcing hardware 104 and the beam reinforcing structure 100 according to this embodiment, similarly to the beam reinforcing hardware 24 and the beam reinforcing structure 20 according to the first embodiment, the web 42a of the steel beam 42 is provided. Even if the formed through hole 42b has a substantially rectangular shape, it is possible to prevent the reinforcing efficiency from being significantly lowered and to prevent the beam reinforcing hardware 104 from becoming heavy and expensive.

  Further, in the beam reinforcing structure 100 according to the present embodiment, a stepped protrusion 104d is provided on the outer surface 104b of the main body 104c of the beam reinforcing hardware 104, and a step side surface 104f (positioning means) is provided on the stepped protrusion 104d. Therefore, the axial positioning of the outer surface 104b of the beam reinforcing hardware 104 with respect to the steel beam 42 can be easily performed, and an increase in manufacturing cost can be prevented. For this reason, it is possible to prevent the beam reinforcing hardware 104 from becoming expensive.

  FIG. 9 is a diagram referred to for explaining the beam reinforcing hardware 124 and the beam reinforcing structure 120 according to the sixth embodiment of the present invention.

  In the beam reinforcing structure 120 according to the present embodiment, the outer shape of the beam reinforcing hardware 124 is formed in a truncated pyramid shape having four tapered surfaces 124b, and the outer periphery of the beam reinforcing hardware 124 on the end surface 124c side. Is different from the beam reinforcing structure 20 according to the first embodiment in that a welding taper portion is not formed.

  That is, as shown in FIG. 9, the beam reinforcing structure 120 is formed only on the steel beam 22 in which a rectangular through hole 22b (see FIG. 2) is formed in the web 22a, and on one surface 22c on both sides of the web 22a. It is arranged, and is provided with a rectangular tube-shaped beam reinforcing metal member 124 that is welded to the welded portion M and is integrally fixed to the web 22a.

  The beam reinforcing hardware 124 is formed in a truncated pyramid shape such that the dimension of the outer shape in the figure in the vertical direction gradually increases as it approaches the end surface 124c side, and the opening 124a and the four tapered surfaces 124b are formed. Have. The outer shape and the inner shape in a cross section in a direction substantially perpendicular to the axis of the opening 124a are both formed in a rectangular shape, and are formed in a shape that is substantially similar to each other.

  As shown in FIG. 9, the beam reinforcing metal piece 124 is arranged with its end face 124c in contact with the vicinity of the through hole 22b of the face 22c (the right face in the figure) of the web 22a. At this time, the opening 124a of the beam reinforcing metal 124 is formed in the same shape as the through hole 22b of the web 22a, like the beam reinforcing metal 24 according to the first embodiment shown in FIG. However, it is formed slightly larger than the size of the through hole 22b, and the inner peripheral surface of the opening 124a is formed through a step between the inner peripheral surface of the through hole 22b.

  The beam reinforcing metal piece 124 is integrally fixed to the web 22a by welding a welded portion M between the tapered surface 124b and the surface 22c of the web 22a.

  Also with the beam reinforcing hardware 124 and the beam reinforcing structure 120 according to the present embodiment, the web 22a of the steel beam 22 is added to the web 22a of the steel beam 22 similarly to the beam reinforcing hardware 24 and the beam reinforcing structure 20 according to the first embodiment. Even if the formed through-hole 22b has a substantially rectangular shape, it is possible to prevent the reinforcing efficiency from being significantly lowered, and to prevent the beam reinforcing hardware 124 from becoming heavy and expensive.

  Further, the beam reinforcing structure 120 according to the present embodiment is formed in a truncated pyramid shape such that the vertical dimension of the outer shape of the beam reinforcing hardware 124 in FIG. 9 gradually increases as it approaches the end face 124c side. And since it has four taper surfaces 124b, the welding operation of the welding part M can be performed easily, and it can prevent that the manufacturing cost increases. For this reason, an increase in the price of the beam reinforcing hardware 124 can be prevented.

  FIG. 10 is a diagram referred to for explaining the beam reinforcing hardware 144 and the beam reinforcing structure 140 according to the seventh embodiment of the present invention.

  In the beam reinforcing structure 140 according to the present embodiment, the protruding plate portions 144d protruding radially outward from the outer side surface 144b of the main body portion 144c of the beam reinforcing hardware 144 correspond to each other on the opposite side to the main body portion 144c. Screw fastening of a bolt 146 and a nut 148 that pass through a bolt insertion hole 142d formed in the web 142a and a bolt insertion hole 144f formed in the protruding plate portion 144d of the beam reinforcement metal 144 Thus, the beam reinforcement hardware 144 is different from the beam reinforcement structure 40 according to the second embodiment in that it is integrally fixed to the web 142a.

  That is, as shown in FIG. 10, the beam reinforcing structure 140 is formed on the web 142 a by fastening a steel beam 142 having a rectangular through hole 142 b and a bolt insertion hole 142 d formed on the web 142 a, and a bolt 146 and a nut 148. A substantially rectangular tube-shaped beam reinforcement hardware 144 fixed integrally is provided.

  In the beam reinforcing metal 144, a projecting plate portion 144d is integrally formed by casting or the like on each of a rectangular tube-shaped main body portion 144c and an outer surface 144b of the main body portion 144c positioned above and below in FIG. In FIG. 10, for convenience of explanation, the main body portion 144 c and the protruding plate portion 144 d are separately shown by a two-dot chain line in the drawing, but actually they are integrated with each other.

  The main body portion 144c of the beam reinforcing hardware 144 is formed in the same shape as the beam reinforcing hardware 44 according to the second embodiment.

  The beam reinforcing metal 144 is inserted into the through hole 142b of the web 142a, and the left surface 144e of the protruding plate 144d in FIG. 10 contacts the vicinity of the through hole 142b of the right surface 142c of the web 142a. And the position of the center part of the axial direction (left-right direction in a figure) of the outer side surface 144b of the main-body part 144c is arrange | positioned and fitted in the through-hole 142b of the web 142a.

  A bolt insertion hole 144f is formed in the protruding plate portion 144d of the beam reinforcing metal piece 144, and a bolt insertion hole 142d is formed in the web 142a at a position communicating with the bolt insertion hole 144f.

  The beam reinforcing metal 144 is screw-fastened by inserting the male screw portion of the bolt 146 through the bolt insertion hole 144f of the protruding plate portion 144d and the bolt insertion hole 144f of the web 142a, and fastening the nut 148 to the distal end portion of the male screw portion. Thus, the web 142a is integrally fixed.

  The beam reinforcement hardware 144 and the beam reinforcement structure 140 according to the present embodiment also provide the web 142a of the steel beam 142 with the same as the beam reinforcement hardware 24 and the beam reinforcement structure 20 according to the first embodiment. Even if the formed through-hole 142b has a substantially rectangular shape, it is possible to prevent the reinforcing efficiency from being significantly lowered and to prevent the beam reinforcing metal 144 from being increased in weight and cost.

  Note that the present invention is not limited to the above-described embodiments, and various modifications are possible as long as the object of the present invention can be achieved. For example, in the above-described embodiment, the present invention has been described with respect to the case where the opening shape of the steel beam web is substantially rectangular. However, the beam reinforcing hardware according to the present invention is also applicable to the case where the opening shape of the steel beam web is circular or the like. May be applied.

  The beam reinforcing hardware according to the above embodiment is formed by cutting a square steel pipe or casting, but is not limited to these manufacturing methods, and other methods such as forging, extrusion, pressing, welding, etc. It may be formed by this manufacturing method.

  Further, the substantially rectangular opening of the beam reinforcing hardware according to the embodiment is not limited to a horizontally long rectangular shape as shown in FIG. 2 or the like, and is formed in a vertically long rectangular shape or a square shape. May be. Further, arc portions as shown in FIG. 2 may be formed at the four corners.

  Further, in the beam reinforcing hardware 24 according to the first embodiment, the size of the opening 24a is slightly larger than the size of the through hole 22b of the web 22a. The hole 22b may be formed in the same size as the hole 22b. This also applies to the beam reinforcing hardware 124 according to the sixth embodiment.

  Further, in the beam reinforcing structure 20 according to the first embodiment, the beam reinforcing hardware 24 is provided only on one surface side of the web 22a of the steel beam 22, but is provided on both surfaces of the web 22a. Also good. The same applies to the beam reinforcing structure 120 and the like according to the sixth embodiment.

  In addition, although the beam reinforcement hardware 64 according to the third embodiment is positioned by the three protrusions 64d, the shape of the protrusions is changed, the number is increased and decreased, and the arrangement position is changed. It doesn't matter. Further, any other positioning means such as a flange-shaped stepped protrusion 104d shown in FIG. 8 may be used.

  Moreover, although the main-body part 84c and the protrusion part 84d were integrally formed, the beam reinforcement metal fitting 84 which concerns on the said 4th Embodiment may be a separate member, respectively. In this case, the main body portion 84c may be formed from a square steel pipe. This also applies to the beam reinforcing hardware 104 according to the fifth and seventh embodiments.

2 Beam reinforcing structure 4 Steel beam 4a Web 4b Through hole 6 Beam reinforcing metal 6a Opening 6b Outer peripheral surface 10 Beam reinforcing structure 12 Steel beam 12a Web 12b Through hole 12c Surface 14 Beam reinforcing metal 14a Opening 14b Outer peripheral surface 14c End surface 20 Beam Reinforcement structure 22 Steel beam 22a Web 22b Through hole 22c surface 24 Beam reinforcement hardware 24a Opening 24b Outer side surface 24c Taper portion 24d End surface 40 Beam reinforcement structure 42 Steel beam 42a Web 42b Through hole 42c surface 44 Beam reinforcement metal 44b Opening portion 44b Side surface 60 Beam reinforcement structure 62 Steel beam 62a Web 62b Through hole 62c Tapered portion 62d, 62e Surface 64 Beam reinforcement hardware 64a Opening portion 64b Outer side surface 64c Body portion 64d Projection portion 64e Side surface 80 Beam reinforcement structure 84 Beam reinforcement hardware 84a Opening portion 84b 84c outside surface Portion 84d Protruding portion 84e Tapered portion 100 Beam reinforcing structure 104 Beam reinforcing hardware 104a Opening portion 104b Outer side surface 104c Body side portion 104d Stepped protruding portion 104e Stepped surface 104f Stepped side surface 104g Taper portion 120 Beam reinforcing structure 124 Beam reinforcing hardware 124a Opening portion 124b Tapered surface 124c End surface 140 Beam reinforcing structure 142 Steel beam 142a Web 142b Through hole 142c Surface 142d Bolt insertion hole 144 Beam reinforcement hardware 144a Opening 144b Outer side surface 144c Main body portion 144d Projecting plate portion 144e Surface 144f Bolt insertion hole 1 welded part

Claims (5)

In the beam reinforcement hardware provided in the substantially rectangular through hole formed in the steel beam web,
A beam-reinforcing metal fitting having an opening and having an outer shape and an inner shape in a cross section substantially perpendicular to the axis of the opening formed in a substantially rectangular shape. The beam reinforcing hardware according to claim 1, wherein the outer shape and the inner shape are formed in a substantially similar shape. The beam reinforcing hardware according to claim 1 or 2, further comprising positioning means that protrudes outward from an outer surface of the beam reinforcing hardware. In the beam reinforcement structure in which the beam reinforcement hardware is provided in the substantially rectangular through hole formed in the steel beam web,
The beam reinforcing hardware has an opening, and an outer shape and an inner shape in a cross section substantially perpendicular to the axis of the opening are formed in a substantially rectangular shape,
The beam reinforcing structure is provided on one or both of the front and back surfaces of the web. In the beam reinforcement structure in which the beam reinforcement hardware is provided in the substantially rectangular through hole formed in the steel beam web,
The beam reinforcing hardware has an opening, and an outer shape and an inner shape in a cross section substantially perpendicular to the axis of the opening are formed in a substantially rectangular shape,
The beam reinforcing structure is characterized in that the beam reinforcing hardware is fitted into a through hole of the web.

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