JPH10266574A - Hanging jig for beam reinforcement pre-assembly - Google Patents

Hanging jig for beam reinforcement pre-assembly

Info

Publication number
JPH10266574A
JPH10266574A JP6986397A JP6986397A JPH10266574A JP H10266574 A JPH10266574 A JP H10266574A JP 6986397 A JP6986397 A JP 6986397A JP 6986397 A JP6986397 A JP 6986397A JP H10266574 A JPH10266574 A JP H10266574A
Authority
JP
Japan
Prior art keywords
wire
connected
wires
small beam
main
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6986397A
Other languages
Japanese (ja)
Inventor
Akira Kamata
昭 鎌田
Original Assignee
Maeda Corp
前田建設工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maeda Corp, 前田建設工業株式会社 filed Critical Maeda Corp
Priority to JP6986397A priority Critical patent/JPH10266574A/en
Publication of JPH10266574A publication Critical patent/JPH10266574A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To provide a hanging jig, by which a beam reinforcement is assembled precedently and the assembled beam reinforcement can be incorporated into a girder reinforcement without complicating works and increasing construction cost. SOLUTION: The hanging jig precedently assembles beam reinforcements in a concrete structure during construction. The hanging jig is composed of a master wire PW, in which each tip section of an intermediate wire 12 is connected to a pair of main wires 11 respectively, and hanging wires 19, in which upper tips are coupled with connecting sections in the two main wires 11, with which each tip section of the intermediate wire 12 is joined. The tip sections of the main wires 11 are connected to column reinforcements 17 supporting each end section of two mutually opposed girder steel frames 16 in the concrete structure 15 during construction respectively and the master wire PW is tensed approximately horizontally at that time, and beam reinforcements 22 are coupled with the lower tips of the hanging wires 19 and hung down and supported.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension jig for pre-assembly of a small beam rebar, and more particularly to a suspension jig for pre-assembly of a small beam rebar in a concrete structure under construction.

[0002]

2. Description of the Related Art Conventionally, concrete structures have been basically constructed as follows. That is, after forming a foundation through a predetermined process, steel frames for columns and girders are assembled or arranged (assembly of column reinforcing bars and assembling of girders), and then a slab formwork on the second floor is installed. . Then, reinforcing bars for small beams (assembly of small beam reinforcing bars) are performed on the slab formwork. After that, concrete is cast and the slab on the second floor is formed together with the pillars, girders and small beams on the first floor. Then, the steps of assembling or arranging the steel frames and placing the concrete are repeated up to a predetermined number of floors to obtain a concrete structure having a predetermined height.

[0003]

However, in such a conventional method for constructing a concrete structure, the steps of assembling columns, assembling girders, installing slab formwork, and assembling small beam reinforcing bars are performed. Therefore, there was a problem that the construction period was inevitably long. If the small beam rebar can be assembled first and assembled to the girder before the slab formwork is installed, the construction period can be shortened. However, for this purpose, it is necessary to suspend and suspend the assembled small beam reinforcement.

[0004] For this reason, for example, the use of a crane truck or the like would rather increase costs, necessitate arranging a crane truck each time, and securing a parking place for the crane truck. Because of this, the work becomes complicated, and considering this, there is a problem in using a crane truck to shorten the construction period, and therefore, the procedure of assembling the beam girder beforehand has not been adopted until now. .

SUMMARY OF THE INVENTION An object of the present invention is to solve such a conventional problem.
An object of the present invention is to provide a suspension jig for pre-assembly of a small beam reinforcing bar which can assemble a small beam reinforcing bar in advance without increasing construction cost and assemble it with a large beam.

[0006]

SUMMARY OF THE INVENTION The present invention is a suspension jig for pre-assembly of a small beam reinforcing bar, and has the following structure to solve the above-mentioned technical problem. That is, the present invention is a suspension jig for assembling a small beam rebar in a concrete structure under construction in advance, comprising a pair of main wires and an intermediate wire having each end connected to the pair of main wires. A main wire, and a suspension wire whose upper end is further connected to one or both of the connection portions of the pair of main wires to which each end of the intermediate wire is connected, and the pair of main wires The end of the wire is connected to each end of two opposing girders in the concrete structure under construction or to the pillars supporting this end, respectively, and the parent wire is tensioned substantially horizontally, so that the suspension wire is It is characterized in that a small beam rebar is connected to the lower end and suspended and supported.

<Concrete Configuration of the Present Invention> The hanging jig for pre-assembly of a small beam rebar according to the present invention comprises the above-mentioned essential components, and the components are specifically as follows. Holds true. The specific component is that a pair of main wires are configured by connecting two wires each, and each end of the intermediate wire is connected to the connecting portion, and one or both of the connecting portions are connected. The suspension wire is connected to the suspension wire.

[0008] In the hanging jig of the present invention for preassembly of the small beam rebar, the pair of main wires may be provided with adjusting means for adjusting the length thereof. As this adjusting means, for example, a turnbuckle or the like can be used. Thereby, slack of the parent wire composed of the main wire and the intermediate wire can be easily eliminated. Therefore, the parent wire can be stretched almost horizontally at any place. Also,
The length of the intermediate wire can also be changed as appropriate, so that the parent wire can be stretched substantially horizontally.

According to the hanging jig for pre-assembly of the small beam reinforcing bar of the present invention, the ends of the main wires, which are the parent wires, are formed at the ends of the two opposing large beams in the concrete structure under construction or at this end. Connected to the column rebar supporting the section. Next, for example, a substantially middle portion of each main wire is connected by a middle wire.

As a result, each of the main wires has a V-shape when viewed in plan, and the top ends thereof are opposed to each other. By stretching an intermediate wire connecting the tips, the entire parent wire is stretched substantially horizontally. To stretch the parent wire almost horizontally,
It can also be performed by providing a length adjusting means on the main wire.

A hanging wire is further connected to a connecting portion between the main wire and the intermediate wire, and a small beam reinforcing bar previously assembled using the hanging wire is supported.
While supporting the beam reinforcement by the suspension wire in this way, the ends of the beam reinforcement are assembled to the girder, and then the slab formwork is installed and concrete is cast.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a suspension jig for pre-assembly of a small beam reinforcing bar according to the present invention. FIG. 1 shows a suspension jig (hereinafter, simply referred to as a suspension jig) 10 for pre-assembly of a small beam rebar according to an embodiment of the present invention. The hanging jig 10 basically includes a parent wire PW including two main wires 11 and one intermediate wire 12 having each end connected to each of the main wires 11.

As shown in FIG. 2, each of the main wires 11 is formed by connecting two wires 11a and 11b, and each end of the intermediate wire 12 is connected to a connection portion 13 thereof. A shackle 14 is attached to each of the substantial ends of the main wire 11 formed by connecting the two wires 11a and 11b. The parent wire PW connects these shackles 14 on each main wire 11 to the steel concrete structure 15 under construction.
Are connected to each end of two opposing girders steel frames 16 or column steel frames 17 supporting the ends, and are tensioned substantially horizontally.

In the embodiment shown in FIGS. 1 and 2, each shackle 14 is respectively connected to a column steel 17 that supports each end of a girder steel 16. Each main wire 1
1, two wires 11a, 11
A turnbuckle 18 is interposed in one of the wires b, so that the tension of the parent wire PW can be adjusted.

The parent wire PW must be stretched substantially horizontally without tension, ie, without slack. Such a tension is basically caused by the length of the intermediate wire 12 connecting the two main wires 11 to each other. It is desirable to perform the adjustment by adjusting. In this way, the main wire 11 of the parent wire PW, which is connected to the column steel frame 17 supporting each end of the two opposing girders steel frames 16 in the steel framed concrete structure 15 under construction and tensioned substantially horizontally, respectively.
One end of a suspension wire 19 is connected to a connection portion 13 between the suspension wire 19 and the intermediate wire 12.

A lever block 21 is attached to a lower portion of the suspension wire 19 via a kite clip 20. The lever block 21 is a manual hoist similar to a chain block, and performs a hoisting operation by moving a lever up and down, and is well known.

Next, a description will be given of a method of using the hanging jig 10 for preassembly of the small beam reinforcement according to this embodiment. When the column steel structure 17 and the girder steel structure 16 are assembled in the steel concrete structure 15 under construction, the column steel structure 17 located at a position higher than the position where the small beam reinforcement 22 is installed as shown in FIG. As described above, the shackles 14 provided at the ends of the main wires 11 which are the parent wires PW are respectively connected.

Next, 2 in each main wire 11
Each end of the intermediate wire 12 is connected and stretched to the connecting portion 13 of the wires 11a and 11b, and the entire parent wire PW is tensioned so as to be substantially horizontal. At this time, the fine adjustment is performed by the wires 11b constituting the main wire 11.
Can be performed by the turnbuckle 18 provided in the control unit.

As a result, each of the main wires 11 has a V-shape in plan view, as is apparent from FIG. 1, and the sharp ends thereof are opposed to each other. As described above, when the parent wire PW is stretched substantially horizontally, the connecting portion 13 between the main wire 11 and the intermediate wire 12 is next.
In addition, a suspension wire 19 is further connected. Thus, even while the hanging jig 10 is installed, the small beam reinforcing bars 22 are assembled in advance.

The pre-assembled beam rebar 22
Is lifted, for example, by hooking a hook provided at the end of the load chain of a lever block 21 attached to the suspension wire 19 to a kansashi bar 23 or the like locked to a small beam reinforcement 22, and is supported at a predetermined position. . While the suspension beams 19 support the beam rebar 22, the beam rebar 22
Is fixed to the girder steel frame 16 and fixed, and then a slab formwork (not shown) is installed to cast concrete. If necessary, it is also preferable to support the small beam reinforcement 22 with the suspension wire 19 until the installation of the slab formwork.

In the above-described embodiment of the present invention, the example in which the girder and the column are applied to a concrete structure composed of steel frame concrete has been described. It goes without saying that the same applies to the structure.

[0022]

As described above, according to the hanging jig for the pre-assembly of the small beam rebar according to the present invention, when the columns and the girders are assembled or arranged in the concrete structure under construction, the parent jig is used. Since the beam and the suspension wire are used to suspend and support the beam rebar, the beam rebar is assembled first and assembled to the beam rebar without complicating work or increasing construction costs. be able to. As a result, it is possible to assemble the small beam rebar simultaneously with the assembling of the columns and the girders, and to shorten the construction period of the concrete structure.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing an extended state of a suspension jig associated with a pre-assembly of a small beam reinforcing bar according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing a stretched state of a suspension jig associated with the pre-assembly of the small beam rebar according to the embodiment of the present invention shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Suspension jig accompanying small beam rebar preassembly 11 Main wire 11a Wire 11b Wire 12 Intermediate wire 13 Connecting part 14 Shackle 15 Concrete structure 16 Large beam steel 17 Column steel 18 Turnbuckle 19 Suspension wire 20 Kito clip 21 Lever block 22 Small Beam Reinforcement 23 Kansashi Bar

Claims (3)

[Claims]
1. A hanging jig for assembling a small beam reinforcing bar in a concrete structure under construction in advance, comprising a pair of main wires and an intermediate wire having each end connected to the pair of main wires. And a suspension wire having an upper end further connected to one or both of the connection portions of the pair of main wires to which respective ends of the intermediate wire are connected. The end of the wire is connected to each end of the two opposing girders in the concrete structure under construction or to the pillars supporting this end, respectively, and the parent wire is tensioned substantially horizontally, and A suspension jig for pre-assembly of a small beam rebar, characterized in that a small beam rebar is connected to a lower end and supported by being suspended.
2. The pair of main wires are formed by connecting two wires, respectively, and each end of the intermediate wire is connected to a connecting portion thereof, and the main wire is connected to one or both of the connecting portions. The hanging jig for pre-assembly of a small beam reinforcing bar according to claim 1, wherein a hanging wire is connected.
3. The hanging jig for pre-assembly of a small beam reinforcing bar according to claim 1, wherein an adjusting means for adjusting the length of each main wire of each pair is provided.
JP6986397A 1997-03-24 1997-03-24 Hanging jig for beam reinforcement pre-assembly Pending JPH10266574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6986397A JPH10266574A (en) 1997-03-24 1997-03-24 Hanging jig for beam reinforcement pre-assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6986397A JPH10266574A (en) 1997-03-24 1997-03-24 Hanging jig for beam reinforcement pre-assembly

Publications (1)

Publication Number Publication Date
JPH10266574A true JPH10266574A (en) 1998-10-06

Family

ID=13415074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6986397A Pending JPH10266574A (en) 1997-03-24 1997-03-24 Hanging jig for beam reinforcement pre-assembly

Country Status (1)

Country Link
JP (1) JPH10266574A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104989114A (en) * 2015-07-15 2015-10-21 上海绿地建设(集团)有限公司 Sliding construction device and method for large-span arc-shaped roof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104989114A (en) * 2015-07-15 2015-10-21 上海绿地建设(集团)有限公司 Sliding construction device and method for large-span arc-shaped roof

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