JPS61212438A - Production of footing reinforcing bar column - Google Patents

Abstract

PURPOSE:To quicken the insertion work of even a heavy reinforced column, to facilitate the positioning of a hoop bar and to improve the welding of the hoop bar by inserting laterally the column main bar sideways through a template, hoop bar and base plate. CONSTITUTION:A template 1 is set up vertically on the first frame 5 and a base plate 2 is fixed by setting up vertically on the second frame 6. The suspending jig 8 to suspend a hoop bar 7 between the template 1 and base plate 2 is set up and a main bar 3 is inserted through the template 1, hoop bar 7 and base plate 2. A footing reinforcement column A is formed by fixing with linking the template 1 and base plate 2 by the main bar 3, the hoop bar 7 is arranged at the prescribed intervals each hoop bar 7 is welded to the column main bar 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method of manufacturing a foundation reinforcing column to be built into the foundation of a structure.

"Technical Background" The applicant of the present invention has developed a reinforced steel frame composite column with a composite structure in which the column part has a reinforced structure and the beam has a steel frame structure. This reinforced steel frame composite column consists of a beam steel section formed by integrating beam steel frames in an intersecting state, and a formwork/form plate section that surrounds the intersection of the beam steel sections and is integrated with the beam steel section, A plurality of joint structures are formed in which a plurality of insertion holes are formed facing each other on both upper and lower surfaces of the beam steel frame section inside the formwork-cum-plate section, and the entire structure is passed through the insertion holes of the plurality of joint structures. It is composed of a plurality of pillar main reinforcements connected to the main pillar reinforcements, and each joint structure is fixed at a predetermined position in the length direction of the pillar main reinforcements with a predetermined distance between them.

By the way, this reinforced steel composite column was erected by connecting to the foundation reinforced column developed by the applicant, which is buried with the upper part exposed in the foundation of the construction site, and later the reinforced steel composite column and the foundation reinforced column were constructed. Concrete was poured to enclose these and serve as pillars of the building.

The foundation reinforcing column has a template and a base plate, each having a plurality of insertion holes formed in its peripheral portion, facing each other with a predetermined distance between them, and a plurality of column main reinforcements inserted through the insertion holes of the opposing template and the base plate to form the template and the base plate. It is configured by connecting it to a base plate.

Then, the applicant of the present invention established an efficient manufacturing method for this foundation reinforced column, leading to the present invention.

``Object of the Invention'' The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a method for efficiently and safely manufacturing foundation reinforcing bars in factories, work sites, etc.

``Means for Solving the Problems'' The present invention provides a template and a base plate supported on a pedestal above the work area, each vertically supported, and suspended by a hanging jig between the template and the base plate. Set up hoops and reinforcements, pass through the template, hoop reinforcements, and base plate, pass the column main reinforcements, place the hoop reinforcements removed from the hanging jig on these column main reinforcements, and then place the hoop reinforcements and weld them to the column main reinforcements. At the same time, the column main reinforcement is fixed to the template and base plate after being inserted into the template and base plate. Note that the hoop muscle used here may be a spiral hoop muscle, a normal hoop muscle, a ring muscle, or the like.

``Action'' Because the column main reinforcement is inserted horizontally through the template, hoop reinforcement, and base plate, even heavy column reinforcement can be inserted quickly, and when the hoop reinforcement is placed on the column main reinforcement, the column main reinforcement In order to support the hoop reinforcement, positioning of the hoop reinforcement becomes easier, and welding workability of the hoop reinforcement improves.

"Example" FIGS. 1 to 11 are for explaining the state in which a foundation reinforcing column A is manufactured by implementing the method of the present invention.

Here, prior to manufacturing the foundation reinforcement column A, first, the configuration of the foundation reinforcement column A will be explained.

The foundation reinforcement column A consists of a square template 1 and a base plate 2, which are provided facing each other, a plurality of column main reinforcements 3 in the form of threaded reinforcing bars connecting these templates 1 and base plates 2, and the column main reinforcement 3. It is mainly composed of a hoop muscle 7 wound around the circumference.

A through-hole 1a having a diameter of about half of one side of the template 1 is formed in the center of the template 1, and 12 through-holes 1b having a smaller diameter than the through-hole 1a are formed in the periphery of the template 1. They are formed at regular intervals surrounding the through hole 1a.

The base plate 2 is formed to be slightly larger than the template I, and the through hole 1 of the template I is formed in the center of the base plate 2.
A through hole 2a, which is slightly larger than a, is formed, and around this through hole 2a, a plurality of through holes 2b having the same size as the through hole 1b are formed, and fixing holes 2C are formed at the four corners of the base plate 2.
are formed respectively. Note that the formation positions of these insertion holes 2h are as follows when the base plate 2 and the teng rate l are opposed to each other with their centers on the same central axis.
and the insertion hole 1b are set so that they are located at the same central axis position.

The main column reinforcement 3 is inserted into the template 1 and the base plate 2, which are opposed in parallel, at right angles through the first insertion hole 1b of the template 1 and the second insertion hole 2b of the base plate 2, which are opposed to each other. The template 1 and the base plate 2 are connected by nuts 20 and 20, which are connected to the second insertion hole 2b of the base plate 2 and screwed into the ends of the column main reinforcement 3 so as to sandwich the template I and the base plate 2, respectively. It is located in

To manufacture the foundation reinforcing column A, first, as shown in Figure 1, a base B is installed on a flat workplace such as a site or a factory, and two pillars are placed on this base B at a predetermined distance from each other. A first mount 5 and a second mount 6 are installed. This first frame 5 connects a pair of support frames 5a with a horizontal rod 5b, and
A is supported by support rods 5c to form a front road H-shape, and the second pedestal 6 is also supported by support rods 6 like the first pedestal 5.
A, a horizontal rod 6b, a support rod 6C, etc. are formed in a front path H shape, and by placing the template 1 on the horizontal rod 5b and bringing both sides of the template 1 into contact with the support rods 5a, 5a. The template l can be supported vertically, and the base plate 2 is mounted on the horizontal bar 6b. By bringing both sides of the base plate 2 into contact with the support rods 6a, 6a,
can be supported vertically. Then, the template 1 is vertically installed on the first mount 5 and fixed with a vise, and the base plate 2 is vertically installed on the second mount 6 and fixed with a vise.

Next, a hanging jig 8 suspending the hoop muscle 7 is installed between the template l and the base plate 2.

As shown in FIG. 7, this hanging jig 8 consists of a rectangular support frame 8A and support legs 8B attached to the four corners of this support frame 8A. Furthermore, hooks 8a for hanging crane hooks are attached to the center portions of two opposing sides of the support frame 8A, and hook members 8b are attached to the support frame 8A below both sides of the hooks 8a. It is being Two support rods 9 are suspended below the support frame 8A, supported by the hook members 8b, and a plurality of annular hoops 7 are suspended through these support rods 9.9. The installation of the lifting jig 8 involves hoisting the lifting jig 8 using the hanging tool 8a with a crane,
This is done by placing the opening surface of the hoop muscle 7 toward the template 1 and the base plate 2 between the first pedestal 5 and the second pedestal 6, and placing the support legs 8A on the pedestal B.

Once the hanging jig 8 has been installed, screw the nuts IO onto both ends of the column main reinforcement 3, leaving a little extra at both ends, as shown in Figure 3, and attach the column main reinforcement 3 to the hoop reinforcement 7 first. After that, insert one end of the column main reinforcement 3 into the insertion hole 2b of the base plate 2 from the hoop reinforcement 7 side, shift the other end of the column main reinforcement 3 to between the base plate 2 and the hoop reinforcement 7, and insert the other end into the hoop reinforcement again. The column main reinforcement 3 is inserted through the template 1, the hoop reinforcement 7, and the base plate 2 by performing an exchange operation such as inserting it into the insertion hole 2b of the base plate 2 from the 7 side. This exchange operation may be performed by first inserting one end of the column main reinforcement 3 into the insertion hole 1b of the template l, and then inserting the other end into the insertion hole 2b of the base plate 2. Create a template by performing the above-mentioned interaction operations!
and the upper side 8 of each insertion hole 1b, 2b of the base plate 2.
The main column reinforcement 3 is inserted through the two insertion holes 1b and 2b. The order in which this exchange operation is performed is first for the two insertion holes 1b and 2b in the upper central part of template 1 and base plate 2, then for the insertion holes 1b and 2b in the upper corner part, and then for template 1 and base plate 2. base plate 2
For the insertion holes 1h and 2b on both sides, start from the upper side. The insertion operation of the column main reinforcement 3 performed in this way can be performed safely and quickly even if the column main reinforcement 3 is heavy because the template 1 and the base plate 2 are vertical and the column main reinforcement 3 can be inserted from the side.

In this state, attach the support rod 9 of the hanging jig 8 to the hook member 8b.
The hoop reinforcement 7 is then placed on the column main reinforcement 3 as shown in Figure 4. After this, the above-mentioned exchange operation is performed to insert the template l and the lower four insertion holes 1b and 2 of the base plate 2.
Insert the column main reinforcement 3 into b as shown in Figure 5. Once all the column main reinforcements 3 have been inserted, screw the nuts 11 onto the column main reinforcements 3 from the outside of the template L and base plate 2, sandwich the template L and base plate 2 with the nuts 10 and 11, and complete the column. The template 1 and the base plate 2 are connected and fixed by the main reinforcements 3.

Next, the hoop reinforcements 7 are arranged at predetermined intervals as shown in Figure 6, the nuts 10 and 11 are welded to the base plate 2, and each hoop reinforcement 7 is welded to the column main reinforcement 3 to complete the foundation reinforcement column A. do. What, the welding of nut 10.11 is hoop muscle 7
This may be done after welding. When welding is performed while placing the hoop reinforcements 7 on the column main reinforcements 3 in this way, the column main reinforcements 3 support each hoop reinforcement 7 during welding work, so accurate positioning is possible and the efficiency of the welding work is improved. improves. Also, in this regard,
Conventional hoop reinforcement welding requires welding the hoop reinforcement at a predetermined position on the vertically oriented column main reinforcement, and the welding process itself requires the worker to move according to the height of the hoop reinforcement. However, by implementing the method of this embodiment, such complexity can be eliminated.

Figures 12 and 13 show the foundation reinforced column A constructed as described above.
This is to show an example of the usage status. The foundation reinforcing column A is constructed by pouring concrete K at the bottom of the cut groove M formed at the location where the column is to be erected, and using the fixing holes 2c and nuts 2I of the base plate 2 to attach the anchors 20 fixed to the concrete K. The foundation reinforcing column A is erected vertically, and the underground beam 22, which will be installed later as required, is integrated into the center of the foundation reinforcing column A, and the foundation concrete pouring and backfilling work is carried out at the leveling level G shown in the figure. Go to this point! r.

After that, the column □ is attached to half of the foundation reinforced column A and used to construct the building. However, as shown here, foundation reinforcement column A
When using a hoop reinforcement 7, a part of the hoop reinforcement 7 is welded to the longitudinal center of the column main reinforcement 3 when manufacturing the foundation reinforcing column A because the underground beam 22 is passed between the column main reinforcement 3. After the underground beams 22 are passed through, these hoop reinforcements 7 are arranged at predetermined intervals and welded as necessary. Alternatively, the foundation reinforcement column A may be constructed without attaching the hoop reinforcement 7 to the central portion of the main column reinforcement 3, and the hoop reinforcement 7 may be welded after being carried to the site and passing through the underground beam 22.

[Effects of the Invention] As explained above, the present invention provides a hoop strut suspended by a hanging jig between a base plate and a template that is vertically provided and supported by a frame above a work place. Pass the column main reinforcement through the template, hoop reinforcement, and base plate, place the hoop reinforcement removed from the hanging jig on these column main reinforcements, then place the hoop reinforcement and weld it to the return reinforcement, and attach the column main reinforcement to the template. After the hoop reinforcement is inserted into the base plate, it is fixed to the template and base plate.In order to perform welding while placing the hoop reinforcement on the column main reinforcement, the column main reinforcement is supported by each hoop reinforcement during welding work for accurate positioning. This improves the efficiency of welding work and the accuracy of welding positions.In addition, since the column reinforcement is placed horizontally and inserted through the template, lifting jig, and hoop reinforcement, it is safe even with heavy column reinforcement. Moreover, easy insertion operation is possible.

[Brief explanation of the drawing]

Figures 1 to 1O are for explaining an example of the method of the present invention. Figure 1 is a side view showing the installation state of the first mount and the second mount, and Figure 2 is a side view showing the installation state of the hoop bars. Figure 3 is a side view for explaining the insertion operation of column main reinforcement;
Figure 4 is a side view showing the hoop reinforcement removed from the hanging jig, Figure 5 is a side view showing the column main reinforcement has been inserted, and Figure 6 is the side view showing the hoop reinforcement removed from the hanging jig.
The figure is a side view showing the hoop strips expanded, Figure 7 is a perspective view of the hanging jig, Figure 8 is a plan view of the template, Figure 9 is a plan view of the base plate, and Figure 10 is the installation in the work area. A side view showing the base, the first trestle, and the second trestle, Fig. 11 is a plan view of the state shown in Fig. 1O, Fig. 12 is a side view showing the usage state of the foundation reinforcing column, and Fig. 13. FIG. 2 is a side view showing the state of use. A... Foundation reinforced column, B... Base! ...template, lb...insertion hole 2...
・Base plate, 2b...Insertion hole 3...Column main reinforcement. 5...First mount, 6...Second mount. 7... Hoop muscle, 8... Hanging jig. Figure 2 Figure 3 Cause Figure 4 Figure 6 Δ

Claims (3)

[Claims] (1) A template having a plurality of first insertion holes and a base plate having a plurality of second insertion holes are placed on a pedestal provided in a work area so that the first insertion holes and the second insertion holes are positioned on the same central axis. At the same time, between the template and the base plate, a hoop muscle is provided which is removably suspended from a hanging jig, and then a hoop wire of a predetermined length that can pass through the template on the pedestal and the base plate is provided. A plurality of column main reinforcements are provided by passing through the first insertion hole of the template, the hoop reinforcement, and the second insertion hole of the base plate, and further, the hoop reinforcement removed from the hanging jig is placed along the column main reinforcement. and at least a part of the hoop reinforcement is welded, and the column main reinforcement is fixed to the template and the base plate after being inserted through the template, the hoop reinforcement, and the base plate. (2) When welding hoop reinforcements to column main reinforcements, weld the hoop reinforcements placed in the part excluding the longitudinal center of the column main reinforcements to the column main reinforcements, and temporarily use the hoop reinforcements placed in the center as the column main reinforcements. A method for manufacturing a foundation reinforcing column according to claim 1, wherein the column is fixed. (3) When welding the hoop reinforcement to the column main reinforcement, the hoop reinforcement is welded only to the part excluding the longitudinal center of the column main reinforcement, and the hoop reinforcement is later welded to this central part on site. A method for manufacturing a foundation reinforcing column as described in paragraph 1.