JP2706827B2 - Hoop reinforcement arrangement method of beam joint of reinforced concrete column including at least column main reinforcement, hoop reinforcement, etc. - Google Patents

Description

The present invention relates to a method of arranging a hoop reinforcing bar at a beam joint of a reinforced concrete column including at least a reinforcing member such as a main reinforcing bar of a column and a hoop reinforcing bar. The present invention also relates to a method for arranging a hoop rebar in which the drilling of a steel joint at a beam joint is reduced as much as possible and welding is not used at all for the hoop rebar.

2. Description of the Related Art A conventional method of arranging a hoop 2 of a beam joint 1 of a column includes
For example:

(I) As shown in FIGS. 9 and 10, at the beam joint 1 of a reinforced steel concrete column, a round hoop is constituted by four L-shaped hoops 2 and the beam is joined. A large number of through holes 1A1a are drilled in the web 1A1 of the beam steel frame 1A of the part 1, and one end 2a of a large number of L-shaped hoop bars 2 is formed in each of the through holes 1A.
1a, and insert the corner 1c of the L-shaped hoop 2A into the main column 1B.
And one end 2a of the hoop 2 and the other end 2b of the hoop 2
(Ii) in a beam joint 1 of a reinforced concrete column,
As shown in FIG. 11 and FIG. 12, the surrounding hoop muscle is constituted by four L-shaped hoop muscles 2, and a threaded portion s is provided at the ends 2a and 2b of the L-shaped hoop muscle 2. A large number of through holes 1A1a are formed in the web 1A1 of the beam steel frame 1A of the beam joint 1 and both ends 2a, 2b of the large number of L-shaped hoop bars 2 are respectively formed in the through holes 1A.
1a, and a nut n is screwed into the threaded portion s of the hoop bar 2, and a number of L-shaped hoop bars 2 are connected to the web of the beam connection portion 1.
There is a bar arrangement method to fix to 1A1, etc.

Problems to be Solved by the Invention According to the conventional reinforcing method (i), the web of the beam joint 1 is
Since a large number of through-holes 1A1a are formed in 1A1, it takes time and effort to drill holes in a steel frame, and since the ends 2a and 2b of the hoop streak 2 are joined by welding, there is a disadvantage that a skilled welder is required. . Further, in the conventional reinforcing method of (ii), it is necessary to drill more through holes 1A1a in the steel web of the beam joint 1 than in the above (i). Not only takes time but also the end 2a of the L-shaped reinforcing bar 2,
It is necessary to form the threaded portion s in 2b, and there is a disadvantage that both the boring process and the thread cutting process are troublesome processes.

In addition, the above-mentioned bar arrangement methods (i) and (ii)
When the number of the hoop rebars is large, a large number of through holes are required, and the loss of the cross section of the steel frame due to the through holes becomes large, which is not preferable in structural strength.

The problem to be solved by the invention of this application is to provide a method for arranging a hoop reinforcing bar at a beam joint of a reinforced concrete column including a reinforcing body such as at least a column main reinforcing bar and a hoop reinforcing bar without the above disadvantages. In other words, it is an object of the present invention to provide a hoop rebar arranging method that requires no welding work, has a small number of through holes in the steel frame portion of the beam joint, and can easily rebar even an unskilled worker.

Means for Solving the Problems The present invention employs the following configuration for solving the above problems.

According to a configuration of the present invention, in a method of arranging a hoop reinforcing bar at a beam joint of a reinforced concrete column including at least a reinforcing body such as a column main reinforcing bar and a hoop reinforcing bar, the beam joint intersects an H-shaped steel frame in a cross shape. And at least one pillar main bar is arranged in each space between the H-shaped steel frame and the H-shaped steel frame of the cross-shaped steel beam, and a plurality of L-shaped hoop bars are provided at intervals. Attach to the column main bar at the joint, pass the locking bar through the through hole in the upper flange of the H-shaped steel beam, and connect the tip of the locking bar to the locking end of each L-shaped hoop bar attached to the column bar. The lower end is passed through the through hole of the lower flange of the H-shaped steel beam, and the L-shaped end of each loop bar attached to the main bar is locked by the locking bar. There is a method of arranging a hoop bar in which the hook is stopped at a portion and the falling bar is stopped by a drop stopper.

Alternatively, a plurality of L-shaped hoops are put together, the bent portion at the center of the put-up hoops is applied to the column main bar, and the locking bar is passed through the through hole of the flange of the H-shaped steel frame of the cruciform steel. After the locking part is engaged with the locking end of the hoop reinforcement, the hoop reinforcement is divided, and each hoop reinforcement is attached to the column main reinforcement of the beam joint at intervals, and the hoop reinforcement is locked. The ends are locked by the locking portions of the locking rebar.

The method for arranging a hoop reinforcing bar according to the present invention includes a joint between a steel reinforced concrete column and a steel reinforced concrete beam,
Joints between steel reinforced concrete columns and steel beams,
The present invention is applied to a reinforcement arrangement at a joint between a reinforced concrete column and a steel beam.

In addition, at least the beam joint portion of the column has at least H
Use one that has a cross-shaped steel frame that is formed by crossing cross-shaped steel frames together.

Examples of the hoop reinforcing bar include (a) L-shaped or U-shaped rebar in which a locking end is formed at an end portion of an L-shaped or U-shaped rebar, and (B) L-shaped or U-shaped reinforcing bar. An L-shaped or U-shaped connecting rebar in which a locking end portion is formed at an end portion and integrally formed at a plurality of intervals is used.

The connecting reinforcing bar of (b) is, for example, bending a rectangular mesh bar so that each of the vertical or horizontal iron bars has an L-shape or a U-shape, and further forming an end portion of the L-shape or the U-shape. It is manufactured by bending to form a locking end.

For example, the locking end of the end portion of the L-shaped or U-shaped hoop reinforces the portion near the tip of the two iron bars at both ends formed by bending into L-shape or U-shape by 90 ° or more (for example, 90 ° to 135 °).

An L-shaped or U-shaped hoop rebar is used as a retaining bar for bending the end of a steel bar that is slightly longer than the H-shaped steel frame to serve as a stop for drop prevention, and the straight portion of the bar is used as a hoop bar. Use the rebar as the locking part of the locking end.

Embodiment A bar arrangement method according to a first embodiment will be described with reference to FIGS.

The column is constituted by a column steel frame 11 (referred to as an H-shaped steel column) having a shape in which two H-shaped steel frame webs are cross-connected to each other in a cross shape.
Each of the four H-shaped steel beams 12 is welded to the outer surface of the flange 11A to form a beam joint 10 of the H-shaped steel column 11. Before welding the H-shaped steel beam 12, a portion 11A1 of the flange 11A of the H-shaped steel column 11 located between the flanges 12A of the H-shaped steel beam 12 to be welded is cut into a trapezoid, and the beam joint 11 The upper and lower flanges 12A close to both side surfaces of the web of the H-shaped steel beam 12 corresponding to the portions where the locking end portions of both ends of the hoop bar 13 are located in plan view with the hoop bar 13 disposed thereon. A pair of through holes 12A2 are formed in the portion 12A1.

The beam joint 10 of the H-shaped steel column 11 has a short plate-like rib body 11A formed by the flange 11A of the H-shaped steel column 11 after being cut into a trapezoid.
2 are formed on the upper and lower inner surfaces of the flange 11B of the H-shaped steel column 11 inside the welded portion of the H-shaped steel beam 12 of the beam joint 10. The reason why the portion 11A1 of the flange 11A of the H-shaped steel column 11 is cut off in a trapezoidal shape is that if this portion 11A1 is not cut off, this portion 11A1 will be a hindrance when arranging the hoop bars 13.

The bar is bent at a right angle at the center thereof to form an L-shape, and the portions near the tips of the two bar portions 13A and 13B formed by bending the L-shape are further 90 ° in a plane including the two bar portions 13A and 13B. The bent end portions 13A1 and 13B1 are bent by the above (for example, 90 ° to 135 °) to form the L-shaped hoop bar 13.

For the rebar 14 that locks the L-shaped hoop 13,
The end of the iron bar that is slightly longer than the H-shaped steel beam 12 is bent to form a stopper 14A for drop prevention.
A reinforcing bar is used as the locking portion 14B that locks the third locking ends 13A1 and 13B1.

It is also possible to use a locking reinforcing bar 14 'formed of a member in which the two locking reinforcing bars 14 and the stopper 14A are connected to each other.

Next, the (1) and (2) hoop rebar arrangement methods will be described.

(1) Reinforce the column main reinforcement 15 in the space between the H-shaped steel beams 12 of the beam joint 10. This column main bar 15 is an H-shaped steel column
It should be located at the four corners of a steel reinforced concrete column, including 11. The number of pillar main reinforcements 15 provided at the four corners is two or more as necessary.

As shown in FIG. 1, a plurality of, for example, three L-shaped hoops 13 are spaced apart from each other
It is attached to the main column 15 of the beam joint 10. This attachment is performed, for example, by binding iron wires or the like. Note that the above three L
Instead of the H-shaped reinforcing bar 13, the L-shaped connecting reinforcing bar described in (b) above, in which three L-shaped reinforcing bars are integrated, may be used.

Next, the retaining rebar 14 is connected to the upper flange 12 of the H-shaped steel beam 12.
A through the through-hole 12A2 of A, the tip of the locking reinforcing bar 14 is lowered while engaging with the locking end 13A1, 13B1 of each L-shaped hoop bar 13 attached to the column main bar 15, and the tip is H-shaped. The steel beam 12 is passed through the through hole 12A2 of the lower flange 12A. Then, the stopper 14A above the locking rebar 14 contacts the upper surface of the flange 12A and is locked. Then, the locking ends 13A1 and 13B1 of the L-shaped ends of the loop bars 13 are locked by the locking portions 14B of the locking bar 14. If necessary, the locking end 13A of the L-shaped hoop bar 13
1, 13B1 is fixed to the locking portion 14B of the locking rebar 14 by binding iron wire or the like. Or (2) A plurality of, for example, three L-shaped hoop bars 13 are put together (for example, tied with a string) and placed on the upper surface of the lower flange of the beam steel frame of the beam joint 10, and the collected hoop bars are put together. 13 center bending part to column main bar 15, anchoring reinforcing bar 14 to H-shaped steel beam
12 through the through hole 12A2 of the upper flange 12A,
The locking end 13A1 of the hoop streak 13 that combines the 4 locking portions 14A,
13H1 and its tip is passed through the through hole 12A2 of the lower flange 12A of the H-shaped steel beam 12. Thereafter, the assembled hoop bars 13 are separated, and the hoop bars 13 are attached to the column main bars 15 of the beam joint 10 with an interval therebetween.

After arranging the hoop bars 13, H-shaped steel columns 11, portions of the H-shaped steel beams 12 near the H-shaped steel columns 11, the column main bars 15, the hoop bars 13 and the like are surrounded by a formwork, The form is filled with concrete to form a steel reinforced concrete column 16.

In the second embodiment, the beam joint 10 of the column steel frame 21 around the building is
This is a method of arranging the hoop muscles 13 and 23 around the column main muscle.

As shown in FIG. 3, the column steel frame has a cross-sectional shape in which a T-shaped steel frame is cross-coupled to the center of one H-shaped steel frame web.
21 (referred to as T-shaped steel column), the flange of T-shaped steel column 21
Each of the three H-shaped steel beams 12 is welded to the outer surface of 21A to form the beam joint 10 of the T-shaped steel column 21. Before welding the H-shaped steel beam 12, the portion of the flange 21A of the T-shaped steel column 21 is cut into a trapezoid and the upper and lower flanges 12A of the H-shaped steel beam 12 are welded in the same manner as in the first embodiment. A through hole 12A2 is formed in each of the holes 12A1.

Bend the iron bar into a U-shape, and bend the part near the tip of the two iron bar portions 23A and 23B bent in a U-shape further inward in the plane including the two iron bar portions 23A and 23B by 90 ° or more. The locking end portions 23A1 and 23B1 are formed to form the U-shaped hoop 23. The L-shaped hoop 13 is the same as that of the first embodiment.

The L-shaped hoop 13 and the U-shaped hoop 23 are also the same as those of the first embodiment.

Next, a method of arranging the hoops 13 and 23 to the beam joint 10 will be described.

Corresponding to the two corners of the steel reinforced concrete column 26 facing the outside of the building, two main H-beams 12 are arranged at the outer ends of the beam joint 10 where the two H-shaped steel beams 12 intersect in a straight line. And the main bar between the H-shaped steel beam 12 and the H-shaped steel beam 12 at the beam joint 10 where the H-shaped steel beam 12 and the H-shaped steel beam 12 intersect at right angles.
Arrange 15 bars.

A plurality of U-shaped hoop bars 23 are attached to the column main bars 15 ′ of the beam joint 10 at intervals between the hoop bars 23. Then, the locking reinforcing bar 14 is passed through the through hole of the upper flange of the H-shaped steel beam 12, and the end of the locking reinforcing bar 14 is attached to the column main bar 15 '. The locking end portions 23A1, 23B1 of the U-shaped hoop bar 23 are attached. While engaging it with the lower end of the H-shaped steel beam 12
Through the through-hole 12A1 of 12A, the stop portion 14A of the locking rebar 14 contacts the upper surface of the flange 12A and is locked. The method of arranging the L-shaped hoop bars 13 at the other two corners of the column 26 of the beam joint 10 is the same as that of the first embodiment.

After arranging the hoop bars 23 and 13, the T-shaped steel columns 21 and
Part of H-shaped steel beam 12 near H-shaped steel column 21, column main reinforcement 15, 1
5 ', the periphery of the hoop bar 13 and the like is surrounded by a mold, and the mold is filled with concrete to form a steel reinforced concrete column 26.

FIGS. 4 to 6 show a method of arranging the hoop muscles of the third embodiment.
This will be described with reference to the drawings.

The column 36 is a reinforced concrete structure including a column main bar 31, a hoop bar 13, and the like, and is configured by burying a cross steel frame 32 serving as a beam joint 10 in a concrete portion 36C of a reinforced concrete column 36 at a connection portion.

The cross steel frame 32 has a short H
The end portion 32A0 of the H-shaped steel frame 32A is formed as a beam attachment part of a steel beam, which is formed by integrally connecting the cross-shaped steel frames 32A in a cross shape.

As in the first embodiment, through holes 32A1b are formed in the upper and lower flanges 32A1a of the H-shaped steel frame 32A of the cross steel frame 32 to be the beam joints 10, respectively.

The same L-shaped hoop bar 13 and locking bar 14 as in the first embodiment are used.

Next, a method of arranging the hoop 13 on the beam joint 10 will be described.

The column main bar 15 is arranged between the H-shaped steel frame 32A of the beam joint 10 and the H-shaped steel frame 32A. A plurality of, for example, four L-shaped hoop bars 13 are attached to the column main bars 15 of the beam joint 10 with an iron wire or the like at intervals between the hoop bars 13.

Next, the retaining reinforcing bar 14 is connected to the upper flange 3 of the H-shaped steel beam 32A.
Pass through the through hole 32A1a of 2A1, engage the locking portion 14B of the locking rebar 14 with the locking end portions 13A12, 13B1 of the L-shaped hoop bar 13, and attach the tip to the lower flange 32A1 of the H-shaped steel beam 32A. Through the through hole 32A1b of the
Lock it against the top of A1.

After arranging the hoop bars 13, surround the portion of the cross steel frame 32 other than the end portion 32A0 of the H-shaped steel frame 32A, the portion of the column main bar 15 other than the upper end portion 15A, the hoop bar 13 and the like with a formwork. Then, the enclosed formwork is filled with concrete to form a steel reinforced concrete column 36.

As shown in FIG. 6, the steel reinforced concrete columns 36
The end portion 32A0 of the H-shaped steel frame protrudes from the surface around the concrete portion 36C, and the upper end portion 15A of the column main bar protrudes from the upper surface at four corners, so that the end portion 32A0 becomes a beam attachment portion for a steel beam. Precast to

The bar arrangement method of the fourth embodiment will be described with reference to FIGS.

The column 46 is a reinforced concrete structure including a column reinforcing bar such as a column main bar, a hoop bar, and the like, and a cross steel frame 42 serving as the beam joint 10 is buried in a concrete portion 46C of the reinforced concrete column 46 at the connection portion.

The cruciform steel frame 42 has substantially the same configuration as that of the third embodiment. On both sides of the web 42A2 of the cruciform steel frame 42, a long plate-like rib body 42B extending between the flanges 42A1 is formed outside the rib body 42B. side
It is fixed by welding so that 42B1 is flush with the outer peripheral surface 46C1 of the concrete portion 46C of the column 46.

In the fourth embodiment, the cross-shaped steel frame 42 having the long plate-like rib 42B serves as the beam joint 10.

As in the first embodiment, the upper and lower flanges 42 of the
A through hole 42A1b is formed in the portion 42A1a of A1.

The same L-shaped loop bars 13 and locking bars 14 as in the first embodiment are used.

Next, a method of arranging the hoops at the beam joint 10 will be described.

The column main bar 15 is arranged between the H-shaped steel frame 42A of the cross-shaped steel frame 42 and the H-shaped steel frame 42A.

Into the space surrounded by the web 42A2 of the cruciform steel frame 42 and the long plate-like rib body 42B, three L-shaped hoop bars 13 are inserted at an angle, and the hoop bars 13 are placed at intervals between them. Attach it to the main reinforcement 15 using iron wire or the like.

Next, the retaining reinforcing bar 14 is inserted into the through hole 42 of the upper flange 42A1.
A1b, and the locking part of the locking reinforcing bar 14 is L-shaped hoop bar 1
The engaging ends 13A1 and 13B1 are engaged with each other, the leading ends of the engaging ends 13A1 and 13B1 are passed through the through holes 42A1b of the lower flange 42A1, and the stopping portion 14A of the engaging reinforcing bar 14 is engaged with the upper surface of the flange 42A1.

In the same manner as in the third embodiment, the end portion 42A0 protrudes from the peripheral surface of the concrete portion 46C of the column 46, and the upper end portions of the column main bars 15 at the four corners protrude from the upper surface of the column 46.
The reinforced concrete column 46 is precast so that 42A0 becomes the beam attachment part of the steel beam.

Advantageous Effects of the Invention The reinforcing method of the present invention arranges at least one column main reinforcing bar in each space between an H-shaped steel frame and an H-shaped steel frame at a beam joint,
A plurality of L-shaped hoop bars were attached to the column main bar at the beam joint at intervals, the retaining bar was passed through the through hole in the upper flange of the H-shaped steel frame, and the tip of the retaining bar was attached to the column main bar. Each L
It is lowered while engaging with the locking end of the H-shaped hoop, and the tip is passed through the through hole of the lower flange of the H-shaped steel beam, and the locking part of the L-shaped end of each loop is engaged. The hoops at the beam joints can be laid out by simple work that does not require skill, since it is locked at the locking part of the rebar and stops the falling rebar with the drop stopper. Also, since no welding connection is used for this rebar arrangement work, a welder requiring skill is not required, and the only holes drilled in the steel component of the beam joint are through holes that pass through the reinforcing bar. From
It is not necessary to increase the number of through-holes even if the number of hoop reinforcements arranged at the beam joint is increased, and there is little loss of the steel frame cross-section due to the through-holes, and the structural strength is not reduced.

In addition, when the end of the iron bar is bent to form a stopper for preventing dropping, and the straight part of the iron bar is used as the locking part of the hoop bar, the upper and lower flanges can be penetrated. The L-shaped or U-shaped hoop reinforcement can be locked simply by inserting the locking reinforcement into the hole, and the operation of locking the hoop reinforcement becomes extremely easy.

[Brief description of the drawings]

1 and 2 show a method of arranging reinforcing bars according to the first embodiment. FIG. 1 is a perspective view of an H-shaped steel column, a steel beam, a column main bar, a hoop bar, etc. of a beam joint, FIG. Is the same as that shown in FIG.
FIG. 3 is a plan view of a T-shaped steel column, a steel beam, a column main bar, a hoop bar, etc. of a beam joint in the reinforcing method of the second embodiment, taken along a line II in FIG. FIG. 4 to FIG. 6 show a reinforcing method of the third embodiment, and FIG. 4 is a cross-sectional view taken along a plane similar to the horizontal plane including the horizontal plane, and FIG. 5, FIG. 5 is a plan view of the one shown in FIG. 4 taken along a plane similar to the horizontal plane including the line II in FIG. 1, and FIG. 6 is a perspective view showing the upper part of the completed reinforced concrete column. FIG. 7 is a perspective view of a cross-shaped steel beam, a column main bar, a hoop bar, etc. of a beam joint in the back muscle method of the fourth embodiment, FIG. 8 is a plan view of the one shown in FIG. 7, FIG. FIG. 9 shows a conventional hoop iron back bar method, and FIG. 9 shows an H-shaped steel column, a steel beam, a column main bar of a beam joint in a conventional bar arrangement method. FIG. 10 is a plan view of the cross section shown in FIG. 9 taken along a horizontal plane including the line II-II, and FIG. 11 is a perspective view of the beam joint in another conventional bar arrangement method. Perspective view of section steel column, steel beam, column main bar, hoop bar, etc.
FIG. 12 is a perspective view of a hoop streak and a lock nut. In the figure, 10 is a beam joint, 11 is an H-shaped steel column, 12 is an H-shaped steel beam,
12A1 is a web, 12A2 is a flange, 12B is a short plate-like rib body, 13 is an L-shaped hoop bar, 14 is a locking bar, 15 and 1
5 'is the main column, 16 and 26 are steel reinforced concrete columns, 2
1 is a T-shaped steel column, 23 is a U-shaped hoop, 32 and 42 are cross-shaped steel beams, 36 and 46 are reinforced concrete columns, and 42B is a long plate-like rib body.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Haruhiko Okamoto 2-5-114 Minamisuna, Koto-ku, Tokyo Inside the Technical Research Institute, Takenaka Corporation (72) Inventor Takahiro Moi 2-5-14-1 Minamisuna, Koto-ku, Tokyo No. Takenaka Corporation Technical Research Institute (56) References JP-A-64-57303 (JP, A)

Claims (7)

(57) [Claims] In a method of arranging a hoop reinforcing bar at a beam joint of a reinforced concrete column including at least a reinforcing body such as a column main reinforcing bar and a hoop reinforcing bar, the beam connecting portion crosses an H-shaped steel frame and integrally forms the beam. Equipped with a cross-shaped steel cross, the cross-shaped H
At least one column main bar is arranged in each space between the shaped steel frame and the H-shaped steel frame, and a plurality of L-shaped hoop bars are attached to the column main bar of the beam joint at intervals, and the locking reinforcing bar is provided. Pass through the through hole of the flange at the top of the H-shaped steel beam, lower the tip of the locking bar while engaging the locking end of each L-shaped hoop bar attached to the column main bar, and lower the tip of the H bar. L of each loop rebar attached to the column main rebar through the through hole of the lower flange of the steel beam
Lock the locking end of the U-shaped end with the locking part of the locking rebar,
A method for arranging a hoop rebar, wherein the rebar stops the fall of a rebar. 2. A method of arranging a hoop reinforcing bar at a beam joint of a reinforced concrete column including at least a reinforcing body such as a column main reinforcing bar and a hoop reinforcing bar. Equipped with a cross-shaped steel cross, the cross-shaped H
At least one column main bar is arranged in each space between the shaped steel frame and the H-shaped steel frame, a plurality of L-shaped hoop bars are put together, and a central bent portion of the grouped hoop bars is applied to the column main bar. The locking bar is passed through the through hole of the flange of the H-shaped steel beam, and the locking portion of the locking bar is engaged with the locking end portion of the grouped hoop bar. Attach them to the main column of the beam joint with a gap between them, and lock the locking end of the hoop bar with the locking bar at the locking portion, and use the drop stopper to prevent the locking bar from falling. A method for arranging hoop muscles, characterized by stopping. 3. A method of arranging a hoop reinforcing bar at a beam joint of a steel reinforced concrete column including an H-shaped steel column, a column main reinforcing bar, and a hoop reinforcing bar, wherein each of the flanges of the H-shaped steel column of the connection portion has an H-shaped column. The steel beams are welded, and the central portion of each flange of the H-shaped steel column corresponding to the portion between the flanges of each H-shaped steel beam is cut off to form a hoop rebar arrangement space. At least one column main bar is arranged in each space between the H-shaped steel beams, a plurality of L-shaped hoop bars are attached to the column main bar of the beam joint at intervals, and the locking bar is H-shaped. The L-shaped ends of the hoop bars attached to the main bars of the shaped steel beam are passed through the through holes of the flanges, and the locking ends of the L-shaped ends of the hoop bars are locked to the locking portions of the locking bars. A method for arranging hoop bars, wherein falling of rebar bars is prevented. 4. A method of arranging a hoop reinforcing bar at a beam joint of a steel reinforced concrete column including a T-shaped steel column, a column main reinforcing bar, and a hoop reinforcing bar, wherein each of the flanges of the T-shaped steel column at the connection portion has an H-shaped bar. The steel beams are welded, and the central portion of each flange of the T-shaped steel column corresponding to the portion between the flanges of each H-shaped steel beam is cut off to form a hoop rebar arrangement space. At least one column main reinforcing bar is arranged in each space between the H-shaped steel beam and the H-shaped steel beam where the H-shaped steel beam intersects at right angles, and a plurality of L-shaped steel beams are provided.
H-shaped hoops are attached to the column main bar at the beam joint at an interval, and a locking bar is passed through a through hole in the flange of the H-shaped steel beam, and each L-shaped hoop bar attached to the column main bar is attached. The locking end of the L-shaped end is locked to the locking portion of the locking rebar, and between the H-shaped steel beam and the H-shaped steel beam where the H-shaped steel beam and the H-shaped steel beam intersect in a straight line. At least two column main reinforcements are arranged in the space, and a plurality of U-shaped hoop reinforcements are attached to the column main reinforcements of the beam joint at intervals, and a retaining reinforcement is formed in a through hole of a flange of the H-shaped steel beam. The hoop ends of the U-shaped ends of the hoop bars attached to the column main bars are locked to the locking portions of the locking bars, and the locking bars are prevented from falling by the drop-stopping means. A method of arranging hoop muscles, comprising: 5. A method for arranging a hoop reinforcing bar at a beam joint of a reinforced concrete column comprising a column main reinforcing bar, a hoop reinforcing bar, and the like,
The beam joint is provided with a cross steel frame having a shape integrally crossed and crossed with an H-shaped steel frame, and at least one column main reinforcing bar is arranged in each space between the H-shaped steel frame and the H-shaped steel frame. Then, a plurality of L-shaped hoop bars are attached to the column main bar at the beam joint at an interval, and a locking bar is passed through a through hole in the flange of the H-shaped steel frame. A hoop reinforcing bar arranging method, wherein an L-shaped end portion is locked to a locking portion of a locking reinforcing bar, and the locking reinforcing bar is prevented from falling by a drop stopper. 6. A method for arranging a hoop reinforcement at a beam joint of a reinforced concrete column including a main reinforcement of a column, a hoop reinforcement and the like,
A long plate-like rib body having a cross-shaped steel beam having a shape in which a beam joint crosses H-shaped steel frames and integrally connected thereto, and extending between flanges of each H-shaped steel frame on both sides of the web of the H-shaped steel frames. Is fixed by welding so that the outer surface of the rib body is flush with the outer peripheral surface of the concrete portion of the column, and at least one column is provided in each space between the H-shaped steel frames of the cross-shaped steel frame. A plurality of L-shaped hoops are inclined and inserted into each space surrounded by an H-shaped steel web of a cross-shaped steel frame and a long plate-like rib body, and a plurality of L-shaped hoops are arranged. Reinforcing bars are attached to the column main bar of the beam joint at intervals, the locking bar is passed through the through hole of the flange of the H-shaped steel frame, and the L-shaped end of each hoop bar attached to the column main bar is locked. Part is locked to the locking part of the locking rebar, and the locking rebar is prevented from falling Reinforcement method hoop characterized by. 7. As a locking rebar for locking an L-shaped or U-shaped hoop, an end portion of the iron bar is bent to form a stopper for preventing a fall, and a straight portion of the iron bar is connected to the hoop bar. 7. A steel bar as a locking portion is used.
The method for arranging hoop muscles according to any one of the above items.