JP2903189B2 - Method of arranging hoop reinforcement in connection part and connection part of steel frame reinforced concrete structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of arranging a hoop reinforcement in a joint and a joint of a steel-framed reinforced concrete structure, in particular, minimizing drilling of a beam steel frame in the joint. Also, the present invention relates to a method for arranging a hoop reinforcement in a joint part in which no welding is used for the hoop reinforcement, and a joint part of a steel reinforced concrete structure.

[0002]

2. Description of the Related Art Conventional methods for arranging a hoop reinforcement at a connection portion of a steel reinforced concrete structure include, for example, the following (a) and (b). (A) As shown in FIGS. 5 and 6, one round hoop is constituted by four L-shaped hoops 2, and a large number of through holes 1A1a are formed in the web 1A1 of the beam steel frame 1A of the connection part 1. And one end 2a of each of a large number of L-shaped hoops 2 is inserted into the through hole 1A1a, and the corner 1c of the L-shaped hoop 2A is applied to the column main bar 1B, and one of the hoops 2 A method of arranging two overlapping L-shaped long ends 2a and two L-shaped short ends 2b of the hoop bars 2 by welding W. (B) As shown in FIGS. 7 and 8, the surrounding hoop muscle is constituted by four L-shaped hoop muscles 2, and the end portions 2 a and 2 b of the L-shaped hoop muscle 2 have threaded portions s. Are formed, a large number of through holes 1A1a are formed in the web 1A1 of the beam steel frame 1A of the connection part 1, and both ends 2a, 2b of a large number of L-shaped hoop bars 2 are inserted into the through holes 1A1a, respectively. Then, a nut n is screwed into the threaded portion s of the hoop 2 to form a large number of L-shaped hoops 2.
Is fixed to the web 1A1 of the beam steel frame 1A of the connection part 1.

[0003]

In the conventional reinforcing method (a), a large number of through holes 1A are formed in the web 1A1 of the connection part 1.
Since the hole 1a is drilled, it takes time and labor to drill a hole in a steel frame, and since the ends 2a and 2b of the hoop bar 2 are joined by welding, there is a disadvantage that a skilled welder is required. Also,
The conventional reinforcing method of (b) requires not only that a larger number of through holes 1A1a need to be formed in the web of the beam steel of the connection part 1 than (a), but also that of the L-shaped reinforcing bar 2. Ends 2a, 2b
It is necessary to form a threaded portion s in the hole, and there is a disadvantage that both the drilling and the thread cutting are troublesome. In addition, the reinforcing methods (a) and (b) require a large number of through-holes when the number of hoop reinforcing bars is large, and the steel cross-section of the steel beam is largely lost due to the through-holes in the web of the steel beam. And this 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 reinforcement in a joint and a joint for a steel-framed reinforced concrete structure which does not have the above-mentioned disadvantages. It is an object of the present invention to provide a method of arranging a hoop reinforcing bar of a joint portion which can be easily arranged even by an unskilled worker, and a joint portion of a steel reinforced concrete structure, in which the number of perforations in the steel frame portion of the beam joint is small. .

[0004]

The present invention employs the following structure as means for solving the above-mentioned problems. The configuration of the present invention is made of a steel material having a cross-sectional shape in which a column steel frame is integrally joined by crossing two steel webs having an H-shaped cross in a cross shape, and at least two flanges are formed on a flange of a connection portion of the column steel frame. An H-shaped cross-section beam steel frame is joined, and at least one main pillar of the column is arranged between the beam steel frame of the connection portion and the beam steel frame so as to correspond to a corner of the column and in the longitudinal direction of the column. A plurality of hoop reinforcements are arranged at intervals in the longitudinal direction of the column steel frame between the upper flange and the lower flange of the beam steel part of the section, and the steel frame reinforced concrete is arranged by engaging the column main reinforcement and the hoop reinforcement. In the method of arranging hoop reinforcements at the joints of a structural structure, the upper and lower flanges are slightly separated from the webs on both sides of each beam steel web embedded in the concrete of the joints. Each penetrates in the longitudinal direction of The hoops are formed at the ends of the two sides of the L-shaped reinforcing bar by connecting the locking ends at an angle to these sides, and each hoop is connected to the connection part. Each hoop is arranged outside the flange of the pillar steel frame, and the main bar is positioned inside the L-shaped bent portion of each hoop muscle, and is drilled in the upper flange of each beam steel frame. Each of the through-holes and the through-hole formed in the lower flange corresponding to the through-hole is passed through a reinforcing bar, and each reinforcing bar is arranged in parallel with the longitudinal direction of the column near the web of the beam steel frame. Then, a locking rebar is positioned inside a connecting portion between the end of the L-shaped side of each hoop bar and the locking end, and the connecting portion is engaged with the locking portion of the locking bar. There is provided a method for arranging hoops in a connection portion, wherein the hoops are arranged at intervals in the longitudinal direction of the column steel frame.

[0005] When the angle between the L-shaped side and the locking end in a plane including the two L-shaped sides of the hoop is made approximately 90 °, the locking rebar is required to be a beam steel frame. Even after passing through the through holes formed in the upper and lower flanges, the hoops can be arranged. When the angle between the L-shaped side and the locking end in the plane including the two L-shaped sides of the hoop streak is smaller than 90 °, each hoop streak is connected to the L-shape. After arranging the pillar main reinforcement so as to be located inside the bending portion of the mold, the locking portion of the locking rebar is formed inside the connecting portion between the end of the side and the locking end in the L-shape of each hoop bar. The connecting portions are engaged with the locking portions of the locking rebars by passing the locking rebars through through holes formed in the upper and lower flanges of the beam steel so as to be positioned at.
In this case, a plurality of hoops are overlapped, and the overlapped hoops are arranged so that the main pillar is located inside the L-shaped bent portion, and then the hoop in which the locking portion of the locking rebar is overlapped The reinforcing bars are passed through through holes formed in the upper and lower flanges of the beam steel so as to be located inside the connection between the end of the L-shaped side of the bar and the locking end, and then a plurality of stacked steel bars are stacked. The hoop muscles are arranged at predetermined intervals. If the angle between the L-shaped side of the hoop and the locking end is smaller than 90 °, the length of the locking end can be reduced even if the concrete layer formed outside the flange of the column steel frame is thin. Can be of a desired length.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for arranging hoops in a connection portion in a first embodiment will be described with reference to FIGS. The column steel frame 11 is made of a steel frame having a cross-sectional shape in which two steel webs having H-shaped cross sections are crossed and integrally joined together, and four H-shaped cross-sections are formed on the outer surface of the flange 11A of the column steel frame 11. The joints 10 are formed by welding the beam steel frames 12 respectively. Beam steel 12
Before joining, the ends of the two L-shaped sides 13A, 13B of the hoop bar 13 and the locking ends 13A1, 13B1 of the hoop bar 13 in a plan view in a state where the hoop bar 13 is disposed in the connection portion 10
A pair of through-holes 12A2 are formed in the upper and lower flanges 12A1 near the both sides of the web 12B of the beam steel frame 12, respectively, in correspondence with the portions where the connecting portions are located. The iron bar is bent at a right angle at the center thereof to form an L-shape, and the portion of the L-shape near the tip of the two side portions 13A and 13B is further substantially 90 ° in a plane including the two side portions 13A and 13B. The bent end portions 13A1 and 13B1 are formed to form the L-shaped hoop bar 13. As the locking reinforcing bar 14 for locking the L-shaped hoop bar 13, the end of the iron bar slightly longer than the beam steel frame 12 is bent to form a stopper 14A for preventing dropping, and the straight portion is hooped. Streak 13
Locking portion 14 for engaging locking end portions 13A1, 13B1
Use the rebar made in B. Note that the locking rebar 1 made of a member in which the stoppers 14A of the two locking rebars 14 are connected to each other.
You can also use 4 '.

Next, a method of arranging the hoop bars 13 of the connection portion 10 will be described. (1) The main column 15 is connected to the beam steel 12 and the beam 1 of the connection part 10.
Reinforcement is arranged between 2 and corresponding to the corner of the pillar. Each column main reinforcement 15 corresponds to the four corners of the steel reinforced concrete column including the column steel frame 11. The number of pillar main reinforcing bars 15 provided at the portions corresponding to the four corners of the pillar, in the vicinity thereof, and the like is two or more as necessary. As shown in FIG. 1, a plurality of, for example, three L-shaped
Between the longitudinal direction of the column steel frame 11
Attach it to the main column 15 of column 0. This attachment is performed, for example, by binding iron wires or the like. Next, the retaining bar 14 is passed through the through hole 12A2 of the flange 12A on the upper part of the beam steel 12, and the tip of the retaining bar 14 is attached to the column main bar 15. The ends of the L-shaped sides 13A and 13B of each hoop bar 13 are attached. The lower part is lowered while engaging with the connection part (or the vicinity thereof) between the part and the locking end parts 13A1 and 13B1, and the tip is passed through the through hole 12A2 of the lower flange 12A of the beam steel frame 12. Then, the stopper 14A above the locking rebar 14 contacts the upper surface of the flange 12A and is locked. The connection between the end of the L-shaped side of each loop bar 13 and the locking ends 13A1 and 13B1 is locked by the locking portion 14B of the locking rebar 14. The locking rebar 14
Is the column steel 1 near the web 12B of the beam steel 12.
1 are arranged in parallel to the longitudinal direction. If necessary, the ends of the L-shaped sides and the locking ends 13A1, 13B1
Around the connecting portion of the locking reinforcement 14 by binding iron wire or the like.
To the locking portion 14B. (2) The column main reinforcement 15 is arranged in the same manner as in (1) above, and a plurality of, for example, three L-shaped hoop reinforcements 13 are piled up (for example, bound with a string), and the steel frame of the connection portion 10 is formed. On the upper surface of the lower flange 12A of the beam, the locking reinforcing bar 14 is passed through the through hole 12A2 of the upper flange 12A of the H-shaped steel beam 12, and the hoop bar 13 is assembled with the locking portion 14A of the locking reinforcing bar 14. While being engaged with the toe portions 13A1, 13B1, etc., the distal end thereof is a lower flange 12A of the H-shaped steel beam 12.
Through the through hole 12A2. Thereafter, the assembled hoops 13 are separated, the hoops 13 are arranged at intervals between them, and the hoops 13 are attached to the main column 15 of the connection portion 10. (3) The column main reinforcing bar 15 is arranged in the same manner as in (1) above, and the retaining reinforcing bar 14 is provided in the through hole 1 of the upper and lower flanges 12A of the beam steel frame 12.
Pass through 2A2. Then, a plurality of, for example, three L
H-shaped hoop bars 13 are arranged in the connection part 10. That is, the locking end 13A at the end of the L-shaped side of the hoop bar 13
1 and 13B1 are engaged with the locking rebars 14 and 14 and pushed in, and the inside of the L-shaped bent portion is applied to the column main bar, and the ends of the L-shaped sides 13A and 13B and the locking ends 13A1 and 13A. 13B
One connecting portion is placed on the locking reinforcing bars 14, 14, and three hoop bars 13 are arranged at intervals in the longitudinal direction of the columnar steel frame 11. The L-shaped bent portion of each hoop bar 13 and the vicinity of the connecting portion between the ends of the L-shaped sides 13A and 13B and the locking ends 13A1 and 13B1 are connected to the pillar main bar 15 or locked by binding with an iron wire or the like. It is fixed to the locking portion 14B of the reinforcing bar 14. After arranging the hoop bars 13, the column steel frame 11, the portion of the beam steel frame 12 near the column steel frame 11, the column main bars 15, the hoop bars 13 and the like are surrounded by a formwork, and concrete is placed in the formwork. Cast and
The column main reinforcing bar 15, the hoop reinforcing bar 13, the locking reinforcing bar 14, the column steel frame 11 and the beam steel frame 12 in the vicinity thereof are buried in the concrete, and the steel frame reinforced concrete connection part 10 is formed.

A method of arranging the hoop bars 13 according to the second embodiment is shown in FIGS. 3 and 4. As the hoop bars 13, the L-shaped sides 13A and 13B and the locking end portions 13A1 and 13B1 are used.
To an angle smaller than 90 ° (for example, 4 °).
5 ゜) is different from that of the first embodiment in that the method described in (5)) is used.
The arrangement of the hoop muscles 13 is the same as in (1) and (2) of the first embodiment. Other bar arrangement methods in the second embodiment include, for example, the following. That is, the column main reinforcing bar 15 is arranged in the same manner as in (1) above, and one of the two reinforcing steel beams intersecting at a substantially right angle is inserted into the through-holes 12A2 of the upper and lower flanges 12A of the beam steel structure 12.
Pass 4 Then, a plurality of, for example, three L-shaped hoop bars 13 are overlapped and put together, and the end of one L-shaped portion of the hoop bars 13 and the locking end portion 13A1 that are put together on the one above-mentioned locking reinforcing bar 14. And put one on the upper surface of the lower flange 12A of the beam steel frame 12, apply the central bent portion of the combined hoop bar 13 to the column main bar 15, and place the other L-shaped bar of the combined hoop bar 13 on the other side. Is placed on the upper surface of the lower flange 12A of the other steel beam. Then, the other locking reinforcing bar 14 is passed through the through hole 12A2 of the upper flange 12A of the other beam steel frame 12, and the other L-shaped end of the hoop bar 13 in which the locking portions 14A of the locking reinforcing bar 14 are put together. The distal end is passed through the through hole 12A2 of the lower flange 12A of the H-shaped steel beam 12 while engaging with the locking end portions 13A1, 13B1 and the like of the portion. Thereafter, the assembled hoop bars 13 are separated, and the hoop bars 13 are arranged at intervals in the longitudinal direction of the column steel frame 11 therebetween, and attached to the column main bars 15 and the locking bars 14. L-shaped sides 13A, 13B
When the angle between the end portions 13A1 and 13B1 is smaller than 90 °, the length of the end portions 13A1 and 13B1 can be reduced even when the concrete layer 16 formed outside the flange 11A of the column steel frame 11 is thin. Can be of a desired length.

[0009]

According to the first aspect of the present invention, in the method for arranging the hoop reinforcing bar of the joint portion according to the first aspect, the column steel frame is formed by integrally crossing two steel webs having an H-shaped cross section. At least two H-shaped beam steel frames are connected to the flange of the connection portion of the column steel frame at a corner of the column between the beam steel frame and the beam steel frame of the connection portion. A plurality of hoop reinforcements are arranged at least one main reinforcement in the longitudinal direction of the column, corresponding to the upper and lower flanges of the beam steel of the connection portion. In the method of arranging the hoop reinforcement of the connection portion of the steel-framed reinforced concrete structure in which the column main reinforcement and the hoop reinforcement are engaged with each other, each beam embedded in the concrete of the connection portion is provided. The upper flange and the flange are slightly separated from the web on both sides of the steel web. A through-hole is formed in the lower flange portion in the longitudinal direction of the pillar, and the hoop is hooked at an end of two sides of the L-shaped reinforcing bar at an angle to these sides. Each hoop bar is formed outside the flange of the column steel frame of the connection portion, and each of the main bar bars is located inside the L-shaped bent portion of each hoop bar. Hoop bars are arranged, and each locking bar is passed through a through-hole formed in the upper flange of each beam steel frame and a through-hole formed in the lower flange corresponding to the through-hole, and each locking bar is connected to the beam steel frame. In the vicinity of the web, the reinforcing bars are arranged in parallel to the longitudinal direction of the column, and the locking rebar is positioned inside the connecting portion between the end of the L-shaped side of each hoop bar and the locking end. Since the connecting portion is engaged with the locking portion of the locking rebar, and each hoop bar is arranged at intervals in the longitudinal direction of the column steel frame, Kneading can be performed reinforcement hoop muscle Joint part in simple task does not require,
Also, since we do not use any welding connection for the reinforcing work,
Since a welder requiring skill is not required, and the holes drilled in the beam steel at the connection are only through holes that pass through the reinforcing bars drilled in the upper and lower flanges, each hoop reinforcement Compared with the conventional reinforcing method of drilling holes through the beam steel beam web, even when the number of hoop reinforcing bars to the joint is increased, it is not necessary to increase the number of through-holes. There are few defects in the cross section of the steel frame due to the holes, and the structural strength is not reduced. (B) In the method for arranging hoop reinforcements in a connection part according to the second aspect of the invention, each hoop reinforcement is provided in a plane including the two sides at ends of two sides of an L-shaped reinforcing bar. Is formed by connecting the locking end portions at an angle of about 90 ° with respect to, so that not only the same effect as the effect (a) of the invention according to claim 1 can be obtained, but also Even after the locking rebar passes through the through holes formed in the upper flange and lower flange of the beam steel, the locking end of each hoop rebar can be easily engaged with the locking portion of the locking rebar, The workability of the hoop rebar arrangement work can be improved. (C) In the method for arranging hoop reinforcements in a connection portion according to the third aspect of the present invention, each hoop reinforcement is provided in a plane including the two sides at an end of two sides of an L-shaped reinforcing bar. Is formed by connecting the locking end portions at an angle of less than 90 °, not only the same operation and effect as the operation and effect (a) of the invention according to claim 1 can be obtained, but also Since the end of the locking end of each hoop can be prevented from hitting the flange of the column reinforcing bar, even if the concrete layer formed outside the flange of the column steel is thin, the locking end of each hoop reinforcing can be used. Can be of a desired length. (D) The connection portion of the steel-framed reinforced concrete structure according to the invention according to claim 4 is a steel material having a cross-sectional shape in which a column-shaped steel frame is formed by crossing two H-shaped cross-sectioned steel webs and joining them integrally. At least two H-shaped cross-section beam steel frames are connected to the flange of the connection portion of the column steel frame, between the beam steel frame of the connection portion and the beam steel frame, corresponding to the corner of the column and the length of the column. At least one column main reinforcement is arranged toward the direction, and a plurality of hoop reinforcements are arranged at intervals in the longitudinal direction of the column steel frame between an upper flange and a lower flange of the beam steel of the connection portion, In the connection part of the steel frame reinforced concrete structure in which the main reinforcement and the hoop reinforcement are engaged and arranged, a little from the web on both sides of each beam steel web embedded in the concrete of the connection part. Separated upper and lower flange parts Through holes are respectively formed in the longitudinal direction of the pillar, and the hoop reinforces the L-shaped rebar by connecting the locking ends to the ends of the two sides at an angle to these sides. The hoop bars are formed such that each hoop bar is located outside the flange of the column steel frame of the connection portion, and the main column bar is located inside the L-shaped bent portion of each hoop bar. Locking rebars are passed through each through-hole formed in the upper flange of the steel frame and a through-hole formed in the lower flange corresponding to the through-hole, and each of the locking rebars is positioned near the web of the beam steel. Bars are arranged parallel to the longitudinal direction of the column, and the L
The inside of the connecting portion between the end of the U-shaped side and the locking end is engaged with the locking portion of the locking rebar, and each hoop bar is arranged at intervals in the longitudinal direction of the column steel, Since the column main bars, hoop bars, locking bars, and column and beam steel beams near them are buried in the concrete, it is easy to arrange the hoop bars at the connection and the column steel at the connection And resection to be added to steel beams,
Processing such as perforation is minimized, and even if the number of hoop reinforcements to the joint is increased, processing such as excision and drilling to be added to the column steel and beam steel at the joint does not increase. In addition, it is possible to construct a joint portion of a steel reinforced concrete structure having a desired strength with less loss of the beam cross section of the steel frame, less decrease in structural strength, and low cost.

[Brief description of the drawings]

FIG. 1 shows a column steel frame, a beam steel frame, and a column main bar of a connection part in Example 1.
Perspective view of hoop streaks, etc.

FIG. 2 is a plan view of the one shown in FIG. 1 taken along a horizontal plane including the line aa.

FIG. 3 shows a column steel frame, a beam steel frame, and a column main bar of a connection part in Example 2.
Perspective view of hoop streaks, etc.

FIG. 4 is a plan view of the one shown in FIG. 3 taken along a horizontal plane including the line bb.

FIG. 5 is a perspective view of a steel column, a steel beam, a column main bar, a hoop bar, and the like in a connection portion according to a conventional bar arrangement method.

FIG. 6 is a plan view in which the one shown in FIG. 5 is sectioned along a horizontal plane including the line cc;

FIG. 7 is a perspective view of a column steel frame, a beam steel frame, a column main bar, a hoop bar, and the like of a connection portion according to another conventional bar arrangement method.

FIG. 8 is a perspective view of a hoop streak and a lock nut.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Connection part 11 Column steel 12 Beam steel 12A Flange 12B Web 12A2 Through-hole 13 Hoop bar 13A side 13B side 13A1 Locking end 13B1 Locking end 14 Locking bar 14A Stop 14B Locking part 15 Main bar

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaru Fujimura 8-21-1, Ginza, Chuo-ku, Tokyo Takenaka Corporation Tokyo Main Store (56) References JP-A-1-163366 (JP, A) Akira Tokubo 58-38576 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04G 21/12 105 E04B 1/16 E04C 5/06 E04C 5/18 105

Claims (4)

(57) [Claims] 1. A pillar steel is consists <br/> of steel cross-sectional shape bonded together by intersecting a web of steel of two H-shaped cross-section to a cross, the flange of the Joint portion of the pillar steel At least two H-shaped beam steel frames are connected to each other, and between the beam steel beams of the connection portion, corresponding to the corners of the columns and oriented in the longitudinal direction of the columns.
At least one column main reinforcement is arranged, and a plurality of hoop reinforcements are arranged at intervals in the longitudinal direction of the column steel between an upper flange and a lower flange of the beam steel of the connection part, and the column main reinforcement is provided. In the method of arranging a hoop reinforcement of a connection portion of a steel-framed reinforced concrete structure which is arranged by engaging with the hoop reinforcement, the beam steel skeleton embedded in the concrete of the connection portion is provided.
Top franc a bit off the web on both sides of the web
And the lower flange in the longitudinal direction of the pillar.
Respectively a through hole is bored, wherein the hoop is formed by connecting the hook leg at an angle to these edges to the ends of the two sides of the L-shaped reinforcing bar, each hoop Arrange each warp bar so that the bar is located outside the flange of the column steel frame of the connection part, and the main column bar is located inside the L-shaped bent portion of each hoop bar, and the upper part of each beam steel frame Each through hole formed in the flange and the through hole formed in the lower flange corresponding to the through hole
Through each reinforcing bar and connect each locking bar to the beam steel web.
In the vicinity, the reinforcing bars are arranged in parallel with the longitudinal direction of the pillar, and the locking rebar is located inside the connecting portion between the end of the L-shaped side of each hoop bar and the locking end, and the connecting portion is Engage with the locking section of the locking bar , and place each hoop bar in the longitudinal direction of the column steel frame.
Reinforcement method of hoop of the specification mouth characterized by Oite Haisuji. 2. A connecting hook leg a substantially 90 ° angle with respect to the side in a plane including the two sides to the ends of the two sides of the hoop is L-shaped reinforcing bar It has been formed by
Reinforcement method of hoop of the Joint portion of claim 1, wherein the the that. Wherein 9 to the side in a plane including the two sides to the ends of the two sides of the hoop is L-shaped reinforcing bar
Formed by connecting the locking ends at an angle smaller than 0 °
2. The method for arranging hoops in a connection part according to claim 1, wherein 4. A pillar steel is consists <br/> of steel cross-sectional shape bonded together by intersecting a web of steel of two H-shaped cross-section to a cross, the flange of the Joint portion of the pillar steel At least two H-shaped beam steel frames are connected to each other, and between the beam steel beams of the connection portion, corresponding to the corners of the columns and oriented in the longitudinal direction of the columns.
At least one column main reinforcement is arranged, and a plurality of hoop reinforcements are arranged at intervals in the longitudinal direction of the column steel between an upper flange and a lower flange of the beam steel of the connection part, and the column main reinforcement is provided. In a connection portion of a steel-framed reinforced concrete structure in which the hoop reinforcing bars are engaged and arranged, a connection portion of the connection portion is provided.
Both sides of each beam steel web embedded in the cleat
Upper flange and lower flange slightly off the web
Through holes in the flange part in the longitudinal direction of the pillar.
The hoop bars are formed at the ends of the two sides of the L-shaped rebar by connecting the locking ends at an angle to these sides, and each hoop bar is a pillar of the connection portion. Each hoop rebar is arranged so that the column main rebar is located outside the flange of the steel frame and inside the L-shaped bent portion of each hoop rebar, and each through hole formed in the upper flange of the beam steel frame locking rebar is threaded through the <br/> through holes drilled in the bottom flange corresponding to said through hole and
The length of the post near the beam steel web
Parallel to the Haisuji against side direction, and the inside of the connecting section between the edge portion and the locking end portion of the L-shaped sides of the hoop is engaged with the locking portion of the locking rebar, each hoop The bars are spaced in the longitudinal direction of the steel column
The main bar, hoop bar, locking bar,
Column and beam steel structures near them are buried in concrete.
Steel reinforced concrete structure, characterized by being
The joint of the structure .