JPS61269947A - Construction method for reinforcing bar structure - Google Patents

Abstract

PURPOSE:To construct a reinforcing bar structure easily and with safety by arranging bars around a steel frame utilizing a space formed between the steel frame and a bar arranging work plane and making combination of structures formed by that arrangement of reinforcing bars. CONSTITUTION:A couple of supporting stands 21 are installed on a bar arranging work plane 20 being the ground surface and a steel frame 15 consisting of H steels etc. is set on the stands 21. The bottom periphery of the steel frame 15 is provided with receiving members 22 and setting of the frame 15 is performed through the members 22. A space is formed between the bottom of the frame 15 and the top surface of the stands 21 by intervention of the receiving members 22. A horizontal bar 23 is fixed on the top surface of both ends of the frame 15 and fastening bolt holes 24 are drilled at both end parts. A bar 25A having two or more main bar are arranged over the top periphery of the frame 15 and then stirrup bars 26 are arranged. A reinforcing bar beam 11 is formed by arranging the top bars 25A, bottom bars 28A, and stirrup bars 26 and is connected with a steel column to make combined structures.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for constructing a reinforced structure using structures such as reinforced beams and reinforced columns.

[Prior Art] Generally, buildings, bridges, etc. are formed of reinforced structures, and the reinforced structures are composed of many structural members such as reinforced beams and reinforced columns. Structural members are formed by arranging reinforcing bars around aggregates, and the work of arranging the reinforcing bars is performed on assembled aggregates at a construction site. For example, when constructing a building, multiple aggregates corresponding to columns and beams are assembled vertically and horizontally via connecting members such as bolts, and reinforcement work is performed in this way. This is done by arranging reinforcing bars around the aggregates. When a reinforced structure such as a building is constructed in this way, the structure is surrounded by formwork, etc., and the structure is constructed by pouring concrete into the enclosed formwork. That will happen.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional method of constructing a reinforced steel structure, reinforcing bars are connected to the combined aggregates at the construction site, so Reinforcement work was considered to be time-consuming. In other words, reinforcement work is performed on aggregates that are assembled vertically and horizontally, so for example, when placing reinforcing bars on aggregates that are higher than the ground, it is necessary to perform the reinforcement work. Scaffolding had to be constructed separately. Reinforcement work on such high scaffolding was considered to be laborious and dangerous, and lifting the reinforcing bars from the scaffolding was also thought to require a great deal of effort.

The present invention aims to construct reinforced steel structures safely and easily.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a reinforced structure with a structural member formed by disposing reinforcing bars around aggregate.
1. In a method for constructing a reinforced steel structure, aggregate is placed on a reinforcing work surface with a receiving member interposed between the lower surface of the periphery of the aggregate and the reinforcing work surface, and the aggregate is Reinforcing bars are arranged around the aggregate using the gap formed between the reinforcing bar and the reinforcing work surface, and a reinforced structure is constructed by combining the structural members formed by arranging the reinforcing bars. I am planning to do so.

[Function] According to the present invention, it is possible to arrange reinforcing bars around the aggregate while the aggregate is placed on the reinforcing work surface of a construction site, factory, etc., and thereby, It becomes possible to construct a reinforced structure safely and easily.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

Figures 1 (A) to 1 (D) are front views showing the process of forming reinforced beams as structural members, Figure 2 is a side view of the reinforced beams, and Figure 3 is a construction using reinforced beams. FIG. 4 is a front view showing a reinforcing steel structure, and FIG. 4 is a side view showing a reinforcing beam on which concrete has been placed.

The reinforcing steel structure 10 shown in FIG. 3 relates to a main part of a structure in a building, and is constructed by connecting and combining a plurality of reinforcing beams 11 and reinforcing columns 12.

The construction of the reinforced steel structure 10 is carried out by first erecting reinforced columns 13 without reinforcing bars arranged on a foundation (not shown). Connecting portions 14 to the reinforcing bar beams 11 are joined to the reinforcing bar beams 11 at equal intervals in advance in the vertical direction of the upright reinforcing bar columns 13 . Connections between the connecting portions 14 of the reinforcing bar columns 13 and the reinforcing beams 11 are carried out by passing the reinforcing beams 11 between the opposing connecting portions 14. The reinforced beams 11 to be connected are as follows.

As will be described in detail later, it is formed by arranging reinforcing bars around a steel frame 15 made of H-shaped steel or the like, and the reinforcing work is carried out at a reinforcement work site on the ground. Each connection part 14
The connection between the reinforcing bar beam 11 and the reinforced reinforcing bar beam 11 is as follows.
It is carried out while being suspended by a hook of a crane etc.
Each end of the reinforcing bar beam 11 and the corresponding connection portion 14 are connected to each other while facing each other. The connection is made by disposing a joint plate 17 between the end of each steel frame 15 constituting the reinforcing bar beam 11 and each opposing connection part 14, and further connecting the joint plate 17 and the steel frame 15. The end portions and each connecting portion 14 are connected using bolts 18 or the like. When the joining work using bolts 18 and the like is completed, the reinforcing bar beam 11 suspended by a crane or the like is connected to the connecting part 14, and in this state, the hook of the crane is removed from the reinforcing bar beam. The work of removing the two and the ribs is carried out using a work plate 19 that has been previously placed on top of the reinforcing bar beam 11 in the reinforcement work area, and a worker stands on the work plate 19. Reinforced column 13 and reinforced beam 1 erected in this way
1 connection and combination work will be performed.

Here, the formation of the reinforcing bar beam 11 is performed in FIGS. 1(A) to 1.
The process is carried out in the order shown in FIG. 1(D). First, as shown in FIG. 1(A), a pair of support stands 2 are
1, and a steel frame 15 made of H-shaped steel or the like is placed on each support stand 21. Steel frame material 15
A receiving member 22 made of an angle material or the like is attached to the lower surface of the periphery of the supporting member 2z, and the steel frame 15 is placed on the support base 21 via the receiving member 2z. As a result, the support stand 21
The receiving member 22 is interposed between the steel frame 15 and the steel frame 15, and a gap TI is formed between the upper surface of the support 21 and the lower surface of the steel frame 15. be done. Kanzan reinforcement 23 is attached to the upper surface of both ends of the steel frame 15, respectively. Furthermore, bolt holes 24 for joining are bored at both ends of the steel frame material 15.

When the steel frame 15 is placed on the upper surface of the support base 21, two or more main reinforcements 25A and 2 are placed above the steel frame 15.
5B reinforcement is performed. The upper reinforcing bars 25A and 25B are made of elongated reinforcing bars, and are longer than the length of the steel frame 15 by Ll. The reinforcement of upper reinforcements 25A and 25B is as follows:
As shown in FIG. 1(B) and FIG. 2, the upper muscles 25A and 25B are attached to each of the upper muscles 23.
This is done with one end side of 5A, 25B and one end side of steel frame material 15 aligned. As a result, each - upper muscle 25A, 25B
The other end protrudes from the other end of the steel frame 15 by LL. Note that the upper muscles 25A and 25B do not necessarily need to protrude and may be shortened.

25B is attached to the Kanzaki reinforcement 23, so that the reinforcement is arranged around the steel frame 15 with a gap T2 as shown in FIG.

Once the reinforcing bars 25A and 25B have been placed, the stirrup bars 26 are next placed. Stirrup muscle 26
The stirrup bars 26 are arranged as follows:
Gap T1 between the upper surface of the support stand 21 and the lower surface of the steel frame material 15
This is done by using stirrup bars 26 around the steel frame 15. That is, the reinforcement of the stirrup reinforcement 26 is such that among the four inner peripheral corners of the stirrup reinforcement 26, that is, the upper and lower main reinforcements 27A, 27B, and 27C127D, the upper reinforcement 25A is placed for the corner 27A, and the upper reinforcement 25A is placed for the corner 27B. This is carried out with the upper reinforcement 25B being attached respectively. First, the stirrup reinforcements 26 are arranged at approximately constant intervals W1 in the longitudinal direction of the steel frame 15, as shown in FIG. 1(C). After the stirrup reinforcements 126 are arranged at approximately constant intervals Wt, two lower reinforcements 2 are placed around the lower part of the steel frame 15 as shown in FIG. 1(C).
8A and 28B are reinforced. Lower muscle 28°A.

28B is made of long reinforcing bars, and upper bars 25A, 25
Similarly to B, the length is longer than the length of the steel frame 15 by Ll. The reinforcement of the lower reinforcements 28A and 28B is each lower reinforcement 2.
This is done by attaching the stirrup bars 8A and 28B to the arranged stirrup bars 26, and as shown in FIG. This is done by attaching it. Lower muscle 28A
, 28B are attached with the other ends of the respective lower reinforcements 25A, 25B aligned with the other end of the steel frame material 15. As a result, one end of each of the lower reinforcing bars 28A, 28B protrudes from one end of the steel frame 15 by Ll. In addition, lower muscle 28A
, 28B do not necessarily need to protrude and may be shortened. The lower muscles 28A and 28B are similar to the stirrup muscles 26.
By being attached to the upper reinforcements 25A and 25B, the reinforcements are arranged around the steel frame 15 with a gap T2 as shown in FIG. 2.

After the lower reinforcing bars 28A and 28B have been arranged, new stirrup reinforcing bars 26 are then arranged with a predetermined gap between the gaps W1. The reinforcement of these stirrup reinforcements 26 is also carried out in a state in which upper reinforcements 25A, 25B or lower reinforcements 28A, 28B are attached to each inner peripheral corner 27A, 27B, 27C127D.

Further, a plurality of stirrup bars 26A are temporarily placed at both ends of the reinforcing bar beam 11 in a bundle-like state. This temporarily placed stirrup bar 26A is allowed to remain outside the joining work area when the reinforcing bar beam 11 is joined to the connecting portion 14 of the steel column 13. Therefore, the stirrup bars 26A are connected to the reinforcing bar beam 11 at the connecting portion 14.
After the connection is completed, reinforcement is placed within the connection area.

As a result, as shown in FIG. 1(D), upper reinforcements 25A, 25B, lower reinforcements 28A, 28B,
Further, a reinforcing bar beam 11 is formed in which stirrup bars 26 and 26A are arranged. In addition, the reinforcing beam 11
can be lifted up by a crane or the like with the work plate 19 placed on top of it.

In this way, the completed reinforced beam 11 is connected and assembled with the steel column 13 as described above.

Next, for the steel column 13, vertical bars 29 made of reinforcing bars are installed.
And hoop reinforcements 30 are arranged. The vertical reinforcements 29 and hoop reinforcements 30 are arranged on the steel column 13 by arranging these reinforcing bars around the steel column 13 at regular intervals. Additionally, upper reinforcements 31 and lower reinforcements 32 are provided around the connection portion 14 of the steel column 13 in a state where they are attached to the longitudinal reinforcements 29 and hoop reinforcements 30. Furthermore, stirrup reinforcements 33 are arranged around the connection portion 14 in a state where they are attached to the upper reinforcement 31 and the lower reinforcement 32. In this way, the reinforcement work for the steel column 13 is completed, and the steel column 12 is formed.

Further, the upper reinforcing bars 31 and lower reinforcing bars 32 of the reinforced connecting portion 14 are connected to the upper reinforcing bars 25A, 25B and lower reinforcing bars 28A, 28B of the corresponding reinforcing bar beams 11.

The connection between the two is through the upper muscles 31 corresponding to the upper muscles 25A and 25B.
and are pressed against each other using a pressure welding machine (not shown). The upper reinforcements 25A, 25B and the upper reinforcement 31 may be connected by a fixed lap joint instead of pressure contact, and the lower vJs 28A, 28B are also connected to the corresponding lower reinforcement 32 using a pressure welding machine. At this time, the upper muscles 25A, 25B and the lower muscles 28A, 2 are projected only by Ll.
Upper muscle 31 and lower muscle 32 corresponding to the protruding portion of 8B
I am trying to adjust the butt dimension with. Upper muscle 2
When the pressure contact between 5A, 25B and the upper reinforcement 31 and between the lower reinforcement 28A, 28B and the lower reinforcement 32 is completed, the stirrup reinforcement 26A is placed on the connection portion. The stirrup bars 26A are routed in advance to each end of the reinforcing bar beam 11 as described above, and the stirrup bars 26A are connected to the upper bars 25A, 2 which are pressed together in the connected state of the reinforcing bar beam 11 shown in FIG.
5B, the upper muscle 31 and the lower muscle 28A, 28B, the lower muscle 32.

By connecting and combining the reinforcing bar beam 11 and the reinforcing bar column 12 as described above, a reinforcing steel structure lO is created as shown in FIG.
is completed. When the reinforced steel structure 10 is completed, each reinforced beam 11 and reinforced column 12 is surrounded by a formwork (not shown), and concrete is placed inside the surrounded formwork to form a concrete structure. A structure will be constructed. That is, the structure will be provided with the reinforcing beam 11 inside the concrete 34, as shown in FIG. 4, for example.

Next, the operation of the above embodiment will be explained.

According to the above embodiment, the reinforcing bar beam 1 in the reinforcing bar structure 10
1 is formed by a support stand 2 supported on a reinforcement work surface 20 on the ground.
This can be done with the steel frame 15 placed on the steel frame 1. That is, since the receiving member 22 that forms the gap T1 between the lower surface of the steel frame 15 placed on the support stand 21 and the upper surface of the support stand 21 is interposed, the upper reinforcement for the steel frame 15 is The reinforcements 25A, 25B, the lower reinforcements 28A, 28B, and the stirrup reinforcements 26 can be easily arranged. In this way, it is possible to arrange reinforcement for the steel frame 15 on the ground, which eliminates the need for constructing scaffolds at high places, working on reinforcing there, and placing the reinforcing bars on the ground. Lifting work will be eliminated. This makes it possible to safely and easily construct the reinforcing bar structure IO.

In the above embodiment, the reinforcing bar columns 12 are formed by arranging vertical reinforcements 29 and hoops 30 on the erected steel columns 13 in the same way as in the past, but these reinforcing bar columns 12 are also Similar to the reinforcing bar beam 11, the reinforcement work surface 2o on the ground
It is also possible to carry out reinforcement work.

5 and 6 respectively show reinforcing beams according to modified examples of the reinforcing beam 11 according to the above embodiment. In the reinforcing beam 40 shown in FIG. 5, a steel frame material 41 is used instead of the H-beam. , the steel frame 41 is formed by connecting a flat steel 42 and an angle member 43 into one set. Formation of the reinforcing bar beam 40 is also carried out by placing the steel frame 41 on the support stand 21 on the reinforcing work surface 20 in the same manner as in the above embodiment.

The reinforcing beam 50 shown in FIG.
is used, and the steel frame material 51 is formed by connecting and combining two plate materials 52, four angle materials 53, and barb 23. Formation of the reinforcing bar beam 50 is also carried out by placing the steel frame 51 on the support stand 21 on the reinforcing work surface 20 in the same manner as in the above embodiment.

[Effects of the Invention] As described above, the present invention provides a method for constructing a reinforced structure in which a reinforced structure is constructed using a structural member formed by disposing reinforcing bars around aggregate. The aggregate is placed on the reinforcement work surface with a receiving member interposed between the lower surface and the reinforcement work surface, and the gap formed between the aggregate and the reinforcement work surface is used to Therefore, it was decided to construct a reinforced structure by arranging reinforcing bars around the aggregate and combining the structural members formed by arranging the reinforcing bars, so that the reinforced structure can be constructed safely and easily. It has the effect of being able to

[Brief explanation of drawings]

Figures 1 (A) to 1 (D) are front views showing the process of forming reinforced beams as structural members, Figure 2 is a side view of the reinforced beams, and Figure 3 is the construction using reinforced beams. 4 is a side view showing a reinforced beam with concrete placed in it, and FIGS. 5 and 6 are side views showing modified examples of the reinforced beam shown in FIG. 2, respectively. It is. 10...Reinforced structure, 11,40.50...Reinforced beam, 12...Reinforced column, 13...Steel frame column, 15,41°51...Steel frame material, 20...Reinforcement arrangement Work surface, 21...
Support stand, 22... Receiving member, 25A, 25B, 31...
・Superior muscle, 26.33... Stirrup muscle, 28A. 28B, 32... Lower muscle, 29... Vertical muscle, 30...
Hoop muscle. Agent Patent Attorney Shuji Shiokawa] Figure 2 Figure 4

Claims (1)

[Claims] (1) In a method of constructing a reinforced structure in which a reinforced structure is constructed using a structural member formed by arranging reinforcing bars around aggregate, the gap between the lower surface of the surrounding aggregate and the reinforcement work surface Place the aggregate on the reinforcing work surface with a receiving member interposed therein, and place reinforcing bars around the aggregate using the gap formed between the aggregate and the reinforcing work surface. A method for constructing a reinforced steel structure, comprising arranging reinforcement and combining structural members formed by arranging the reinforcing materials to construct a reinforced steel structure.