JPS6294657A - Steel bar construction method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] The present invention is directed to the construction of a deformed paddle body for columns and beams of reinforced concrete buildings. In the framework of reinforced concrete buildings, construction workability is improved by using large-diameter reinforcing bars and high-strength reinforcing bars to reduce the number of reinforcing bars and improve the filling properties of concrete.

Processing and assembling these large-diameter reinforcing bars and high-strength reinforcing bars is impossible with conventional manual construction methods, and requires prefabrication, which requires highly accurate processing and assembly methods. Furthermore, since reinforcing bars are ultimately placed into concrete, it is necessary to adequately control accuracy and quality at the processing and assembly stage.

Conventionally, as a prefabricated reinforcing steel construction method, the ends of the main column reinforcements 11 are attached to the wires 12 inside the framed steel section 10 as shown in FIG.
There was something that could be tied together and installed.

However, in the conventional construction method described above, not only is the assembly precision of the cage reinforcing bars insufficient, and the installation is time-consuming, but it is especially difficult to install the core cage reinforcing bars. -ii
4+FKI 'IXK/11 answer 1m 823--hk
There were problems such as Ik + L- and atr'EIE4.

The present invention was made to solve the above-mentioned conventional problems, and its purpose is to provide a reinforcing steel construction method that can be assembled with high precision and high efficiency.

[To accomplish Structure 1 q of the invention - The reinforcing bar construction method of the present invention assembles the cage reinforcing bars for columns or beams into the ground while holding both ends of the main bars with jig plates, and attaches at least one jig plate. It is characterized in that the girder reinforcing bars are hoisted and erected in a state in which the girder reinforcing bars are suspended, and the girder reinforcing bars and the outer gag reinforcing bars are held by separate jig plates and assembled into the ground independently, and then the girder reinforcing bars are first placed in a jig. Erect the gage with the plates attached, then erect the outer circumferential gag reinforcing bars with the jig plate attached to the outside of the bulk reinforcing bars, assemble both jig plates, and erect the gag reinforcing bars integrally. It is characterized by:

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

Fig. 1 shows the state of assembling the column reinforcement bars.

Insects will assemble frame scaffolding 1 near the building site's building site so as to sandwich the ground assembly space. Pipes or rods 2 and 3 are passed vertically between the frame scaffolds 1 on both sides.

The upper bar 2 is located at the head of the column cage reinforcing bar to be assembled into the ground, and a column head jig plate 4 as shown in FIG. 2 is attached.

In addition, the lower bar 3 is located at the leg of the pillar cage reinforcement, and the 3rd A
A column base upper jig plate 5 as shown in the figure is attached, and a column base lower jig plate 6 is installed on the ground below the column base upper jig plate 5.

The column head jig plate 4 is composed of an iron plate having a shape as shown in FIG. That is, a hole 4a for pouring concrete is formed in the center, and a main reinforcement holding part 4b is formed so as to surround the expansion 4a. The main reinforcement holding portion 4b has four grooves at the four corners and eight positions arranged circumferentially inside the four grooves, all of which are formed in the shape of a groove that opens outward.

In this embodiment, the main reinforcement holding part 4b has an arcuate 7-run receiving piece 4b'.
is installed, but it is not necessary.

In addition, an oak (4c) is fixed to a position substantially opposite to the arcuate 7-run receiving piece 4b' of all or part of the main reinforcement holding portion 4b, and a hole (4d) screwed onto the oak (4c) allows
It is designed to tighten the set main reinforcing bar S.

4e is a hole for a lifting hook.

In addition, as shown in FIG. 3A, the column base upper jig plate 5 has holes 5a arranged so that every other main reinforcement S1 of the column main reinforcements S+ (see FIG. 4) passes through in the circumferential direction. At the same time, it is set at a height position necessary to shift the position of the pressure joint in a vertical staggered manner with respect to the column base lower jig plate 5. Incidentally, the virtual circles shown in FIGS. 3A and 3B indicate the positions where the lower end surfaces of the main reinforcements S collide.

Therefore, the circumferentially adjacent main reinforcements S of each jig arranged as described above are accurately positioned in a vertical staggered manner by the column base upper jig plate 5 and lower jig plate 6. It is securely fixed by the column head jig plate 4,
7-pipe S2 is arranged on this to form the pillar cage reinforcing bars.

Next, the lifting hook hole 4e of the column head jig plate 4
As shown in FIG. 5, the pillar cage reinforcing bars are lifted up and placed on the pillar cage reinforcing bars on the lower floor of the building, and the staggered joints are pressure welded using an automatic gas pressure welding machine or the like.

In addition, there are cases in which structural reinforcing bars are placed in the center of external columns on lower floors. FIG. 6 shows a head jig plate 7 for core iron knots, which basically has the same structure as the head jig plate 4 shown in FIG. 2. This bulk reinforcing bar is assembled into the ground in a similar manner to the above-mentioned outer circumferential cage reinforcing bar.

As shown in Figure 7, the ground-assembled structural reinforcing bars are placed in pressure contact with the upper sides of the structural reinforcing bars on the lower floors.

Next, the outer circumferential cage reinforcing bars, which were assembled separately, were attached to the IE11 above.
1F 68 As shown in Figure 1F, press the kiln and peel off the white dew f1, and press both heads with jig play) 7.8
Assemble and build as one. In addition, the head jig plate 7 of the bulk reinforcing bar may be removed once when erecting the outer periphery cage reinforcing bars, and then assembled onto the upper side of the jig plate 8 after the outer periphery cage reinforcing bars are erected.

Attach the beam reinforcing bars to the pillar cage reinforcing bars erected as described above, set the formwork, and set the above-mentioned column head jig plate 4.
Insert a concrete pouring hose into the hole 4a and pour concrete from a low position. Once the concrete has hardened, the column head jig plate 4 is removed.

[Effects of the invention] (1) Since the gage reinforcing bars are assembled into the ground with both ends held by jig plates, not only the assembly accuracy is greatly improved, but also the assembly work can be carried out efficiently.
This results in cost reduction.

(2) Since the construction and concrete are poured with the jig plate attached, the construction accuracy and construction work efficiency are improved.

(3) By assembling and integrating the columnar reinforcing bars and the outer circumferential cage reinforcing bars through their respective jig plates, the accuracy of the entire column reinforcement is improved, and the efficiency of the erection work is also improved. do.

[Brief explanation of drawings]

Figure 1 is a diagram showing the state of the column cage reinforcement work, Figure 2 is a plan view of the column head jig plate, Figure 3A is a plan view of the column base upper jig plate, and Figure 3B is the column base. A plan view of the lower jig plate, Figure 4 is an end view taken along the line IV-IV in Figure 1, Figure @5 is an explanatory diagram of the installed state of column reinforcing bars, and Figure 6 is the column head for the core iron sieve. Fig. 7 is an explanatory diagram of erection of core reinforcing bars, Fig. 8 is an explanatory diagram of erection of peripheral reinforcing bars, Fig. 9 is an end view along Fig. 8 [-IX, Fig. 10 The figure is an explanatory diagram of the conventional prefabricated reinforcing steel construction method. 1... Frame scaffolding, 2, 3... Bar material, 4... Column head jig plate, 4a... Hole, 4b... Main reinforcement holding part,
4b'...Arc-shaped 7 run piece, 4c...Nut, 4
d... Bolt, 4e... Hole for lifting hook, 5...
・Column base upper jig plate, 6... Column base lower jig plate, 7... Head jig plate for core iron section, Sl...
・Main reinforcing bar, S2...7-bu.

Claims (2)

[Claims] (1) The gage reinforcing bars for columns or beams are assembled into the ground while holding both ends of the main bars with jig plates, and the gag reinforcing bars are hoisted and erected with at least one of the jig plates attached. Reinforced construction method. (2) After the core cage reinforcing bars and the outer cage reinforcing bars are assembled independently while being held by separate jig plates, the core cage reinforcing bars are first erected with the jig plates attached, and then the core basket reinforcing bars are erected with the jig plates attached. A reinforcing steel construction method characterized by erecting the outer peripheral gag reinforcing bars with a jig plate attached to the outside of the gag reinforcing bars, assembling both jig plates, and erecting the gag reinforcing bars integrally.