JPH0797865A - Assembly of beam steel reinforcement - Google Patents

Abstract

PURPOSE:To construct a beam steel reinforcement easily and efficiently even on a narrow site, by assembling the beam steel reinforcement at the floor below a set position, on the floor surface of a construction floor, and lifting up the beam steel reinforcement to the set position by a lifting-up means. CONSTITUTION:On the floor surface 1 of the construction floor of a building in construction, the beam steel reinforcement A-D are assembled under the set positions of the beam steel reinforcements A-D on the floor. After the completion of assembly, the beam steel reinforcements A-D are lifted up to set positions by a lifting up means such as a crane, high lift, and a hydraulic jack. Accordingly, the assembly work for the beam steel reinforcements A-D can be carried out efficiently, and after the arrangement of pillals, beams, and walls, a form is constructed, and the complication of the steel reinforcement construction and the form construction is avoided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of assembling beam reinforcing bars when a building having a reinforced concrete structure is constructed.

[0002]

2. Description of the Related Art As a conventional method for assembling a beam reinforcing bar in the case of building a building having a reinforced concrete structure, a beam reinforcing bar is first assembled in a place other than the construction floor of the building under construction,
A method is known in which this is lifted by a crane or the like and conveyed to construct a beam reinforcing bar at a predetermined position. However, this construction method cannot be adopted unless there is enough room in the site to secure the stock space of the rebar body to be assembled first and the rebar assembling space.

Therefore, in a building where there is no room on the site, on the construction floor, after reinforcing the columns, if there are walls, reinforcing the walls, and then form the columns, beams, walls and slabs. Pair,
On the formwork of this slab, a beam reinforcing rod was assembled, this beam reinforcing rod was dropped into the beam formwork, and then the slab was reinforced and the concrete was placed. .

[0004]

The former of the above-mentioned conventional construction methods has a problem that it cannot be adopted unless the site of the building to be constructed is sufficient. In the latter construction method, the stock space of the rebar body that was assembled in advance is not required, but the rebar work and the formwork work are intermixed,
There was a problem that it was difficult to adjust the construction schedule and staffing, and it was difficult to construct a process to shorten the construction period.

[0005]

In order to solve the above-mentioned problems, in the present invention, on the floor surface of the building floor of the building under construction, the beam reinforcement is assembled below the set position of the beam reinforcement of that floor. After the assembly, the beam rebar is moved to the set position by the lifting means.

[0006]

As described above, in the present invention, on the floor surface of the building floor of the building under construction, the beam reinforcing bars are assembled below the set position of the beam reinforcing bars, and after the assembly, the beam reinforcing bars are lifted by the lifting means. Since it is moved to the set position, not only can construction with good work efficiency be performed similarly to the conventional construction method using the pre-assembled rebar body, but according to the present invention,
Since the formwork will be built after the arrangement of columns, beams, and walls,
Reinforcing bar work and formwork work will not be mixed.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 shows a part of a floor surface 1 of a building of a multi-story building having a reinforced concrete structure, in which the construction and curing of the concrete of the lower floor are completed and the upper floor is about to be constructed. Is a part of the main bar of the pillar projecting on the floor 1 and 3 is an assembly stand that is being lifted by a crane (not shown) or the like to be transported onto the floor 1, and has already been transported to the floor 1. The assembly stand 3 is placed. Although not shown, necessary materials such as reinforcing bars are carried on the floor surface 1 in advance.

Next, as shown in FIG. 2, the assembly stand 3 is arranged at a predetermined position on the floor surface 1 (a position directly below the beam), and these assembly stands 3 are used as shown in FIG. Assemble the beam reinforcements A, B, C, and D. Before assembling these beam reinforcements A to D, the main reinforcement 2 of the column is extended and erected, and the necessary hoop reinforcement 4 is fitted into the lower portion of the main reinforcement 2.

In order to assemble the beam rebars A to D, first, as shown in FIG. 4, two upper main rebars 5 and 5 are placed on the assembly stand 3, and a required number of stalaps are provided on these main rebars 5. The muscles 6 are fitted together, and the two lower end main muscles 7, 7 are inserted into these stirrup muscles 6,
Is set at a predetermined interval and is fixed to the main bars 5 and 7, respectively. Since the beam rebars A to D are assembled at a low position on the assembly stand 3, the work is easily and efficiently performed.

When the beam rebars A to D are assembled as shown in FIG. 3, the assembled beam rebars A to D are beamed by a crane, a high lift, a hydraulic jack, etc., as shown in FIG. Lift to the set position of. That is, as shown in FIG. 6, the hairpin members 8 are inserted under the upper end main bars 5, 5 of the beam rebars A to D, and both ends of the hairpin member 8 are lifted to a set position via the hairpin members 8. It is supported by a support member (support) 9.

Next, as shown in FIG. 7, a large number of hoop reinforcements 4 fitted under the main reinforcements 2 of the column are attached to beam reinforcements A to D.
Are fixed to the main bars 2 of the pillars below in a substantially even distribution. Further, FIG. 8 shows a state in which wall reinforcements 10 are provided between the beam reinforcements B and D and the floor surface 1.

The bar arrangement 10 shown in FIG. 8 includes a floor surface 1 of construction equipment.
An opening 10a is provided to facilitate the upward movement. If the opening 10a is provided in this way, a device for lifting the beam reinforcement (
When moving the construction robot) to each work area, the movement of the robot becomes easy. The construction robots include those used for lifting, as well as wall reinforcement, formwork assembly, non-bearing wall construction, and glass attachment. If the opening 10a cannot be provided, use the balcony or the like to move to the next work area. At this time, although it depends on the weight of the construction robot, it is preferable to use a split robot in order to reduce the weight.

Beam rebars A to D shown in FIGS. 1 to 8 described above.
In the case of the girder beams A and C, the central portion of the beam is suitable, and in the case of the span beams B and D, the central portion or both end portions of the beam are preferably joined. Alternatively, only the girder beams A and C may be lifted after the reinforcement, and the span beams B and D having the seismic wall 10 may be dropped into the form frame after the form frame is installed.
That is, in the span beams B and D with the seismic wall 10, since the diameter of the main bar itself is small and the number of main bars is usually small, bending may occur easily, and therefore a large number of supporting members are required. Will be needed. Therefore, in such a case, the drop-in method is easier than the lifting method.

FIG. 9 shows a main frame 2 of a column with beam reinforcements A, B and D, which are assembled in a cruciform shape in plan view in a rigid frame structure.
This is another way to support
A rope 12 is used to support between a hairpin member 8 inserted through each beam rebar A, B, D and a member 11 attached to a main bar 2 of a column. Then, the reinforcing bars of the pillar and the beam are connected and fixed at a predetermined position by a joining jig or a wire (not shown). In this case, the beam reinforcements may be connected to each other at the center of the beam. According to this method, it is not necessary to support the beam reinforcement lifted by the above-mentioned lifting means by the support member 9, and workability such as movement of equipment on the floor surface 1 is improved.

The method of constructing the beam reinforcing bars has been described above, but the actual work is performed, for example, in the following procedure.
That is, as shown in FIG. 10, in a building in which one floor has 8 spans (for example, 1 span is between the seismic wall 13 and the seismic wall 13), the horizontal construction section is divided into 2 spans, and the above-mentioned pillars in the 1st section Beams and walls will be reinforced, and after completion, move to the 2nd work area. Next, in the 1st construction section, formwork for pillars, beams, walls, and floors is performed, and then concrete is placed up to the lower surface of the floor slab. In the meantime, the reinforcement work in the 2nd construction section is completed. Next, the bar arrangement work moves to the third work area, and the formwork work for columns, beams, walls, and floors moves to the second work area. At this time, in the first construction section, the formwork of the balcony 14 and the corridor portion 15 is performed, the floor 16, the balcony 14, and the corridor portion 15 are laid out, and then concrete is poured.

[0016]

As described above, in the present invention, on the floor surface 1 of the building floor of the building under construction, the beam reinforcing bars A to D are assembled below the set position of the beam reinforcing bars, and after the assembly, the lifting is performed. Since the beam rebar is moved to the set position by the heavy means, the beam rebar can be easily assembled in the low position and no additional site is required. Therefore, according to the present invention, not only can the construction with good work efficiency be performed similarly to the conventional construction method using the previously assembled rebar body, but according to the present invention, the formwork is built after the reinforcement of the columns, beams and walls. As a result, it is possible to obtain the effect that the reinforcing bar construction and the formwork construction do not mix.

[Brief description of drawings]

FIG. 1 is a perspective view on a floor surface before assembling a beam reinforcing bar by a method of the present invention.

FIG. 2 is a perspective view showing a state in which an assembly stand is arranged on the floor surface of FIG.

FIG. 3 is a perspective view showing a state where beam reinforcing bars are assembled on the assembly stand of FIG.

FIG. 4 is a partial cross-sectional view of a beam reinforcing bar assembled on an assembly stand.

FIG. 5 is a perspective view showing a state in which each beam rebar of FIG. 3 is lifted to a set position.

FIG. 6 is an elevational view showing a state where the beam reinforcing bar of FIG. 4 is raised to a set position and supported by a supporting member.

FIG. 7 is a perspective view showing a state in which the hoop muscles of the pillar of FIG. 5 are distributed and fixed at predetermined positions.

FIG. 8 is a perspective view showing a state in which necessary reinforcing bars are arranged on the beam reinforcing bar and the floor surface of FIG.

FIG. 9 is a perspective view showing another method of lifting a beam reinforcing bar.

FIG. 10 is a plan view of a building showing an actual construction example.

[Explanation of symbols]

 1 Floor surface 2 Main reinforcement of columns 3 Assembly stand A, B, C, D Beam reinforcement 4 Hoop reinforcement 5 Upper main reinforcement 6 Strap reinforcement 7 Lower main reinforcement 8 Knocking member 9 Support member (support) 10 Main reinforcement for wall 11 Column reinforcement Member attached to 12 Cables 13 Seismic wall 14 Balcony 15 Corridor 16 Floor

Claims (1)

[Claims] 1. A beam reinforcing bar is assembled on a floor surface of a building floor of a building under construction below a setting position of a beam reinforcing bar of that floor, and after the assembly, the beam reinforcing bar is moved to a setting position by a lifting means. A method for assembling a beam rebar characterized by the following.