JPS61207739A - Reinforced concrete construction method and beam cross part hoop clamp tool used therein - 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] [Field of Application of the Invention] The present invention relates to a reinforced concrete construction method, particularly a reinforced concrete construction method for a building having multiple floors, and a column hoop bar width stopper at a beam intersection used in this construction method. be.

[Background of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Conventionally used construction methods when constructing a building having multiple floors using reinforced concrete will be explained using FIGS. 1 to 4. Figures 1 and 2 are cross-sectional views illustrating the placement of reinforcing bars during the creation of the beam reinforcement structure and during concrete pouring, respectively, and (a) in Figures 3 and 4 is A in Figure 1. - A sectional view and a front view of the beam intersection seen from the B direction; (c) in Figures 3 and 4 is a front view of the beam intersection seen from the A-A cross section of the second diagram and the B direction; Figures 3 and 4 (b) are a cross-sectional view and a front view at an intermediate stage between (a) and (Q), respectively.In Figure 0, 1 is the foundation, 2 is the column reinforcement,
3 is a floor reinforcement, 4 is a subfloor reinforcement, 5 is a floor stirrup reinforcement, 6 is a floor column hoop reinforcement, 7 is a column hoop reinforcement, 8 is a formwork, 9 is a spacer block, 10 is a beam reinforcement, 11 is a beam bottom reinforcement, 12 is abdominal muscles,
13 is the beam stirrup reinforcement, 14 is the width stop reinforcement, 15 is the column hoop reinforcement at the beam intersection, 16 is the beam lower reinforcement support, and 17 is the horse.

18 indicates a recessed portion of the formwork.

At the beginning of construction, foundation 1 concrete was poured,
Column reinforcements 2 are assembled on top of that, column hoop reinforcements 6 are attached, floor stirrup reinforcements 5 are placed, and the floor is concreted.Next, column hoop reinforcements 7 are attached to column reinforcements 2 and the form 8 will be placed and concrete will be poured for the pillars. Next, the formwork 8 for forming the second floor floor, in which the beam portion for forming the beam forms a recessed portion, is assembled. Formwork 8 formed in this way
Above, the reinforcing structure of the intersecting beams on the second floor will be erected.

The reinforcement structure of this beam is such that the main reinforcements are the upper beam reinforcement 10 and the lower beam reinforcement 11 that intersect with the column reinforcement 2, and the parts other than the column reinforcement 2 are the primary reinforcements.
As shown in the figure and FIG. 2, the upper beam reinforcement 10 and the lower beam reinforcement 11
Comrades, beam stirrup muscles 13 stretched between the beam supra muscles 10 and beam bottom muscles 11, abdominal muscles 12 stretched parallel to the beam supra muscles 10 and beam bottom muscles 11, and the fulcrum of the beam stirrup muscles 13 and abdominal muscles 12. At the intersection of mutually perpendicular beams, the beam intersection column hoop reinforcements 15 are attached to the outer periphery of the column reinforcements 2, which are composed of the stop bars 14 attached.

The reinforcing bar structure of this beam is assembled using a lower beam crossbody 16 and a horse 17 on a formwork 8 for forming the second floor floor in which the beam portion for forming the beam forms a recess 18. That is,
A beam supporter 16 is placed on the formwork 8 so as to straddle the recess 18.
with the .

The lower beam reinforcements 11 are arranged via the column reinforcements 2, and then the upper beam reinforcements 10 are arranged via the column reinforcements 2 with the horse 17 installed on the formwork 8. With the beam upper reinforcements 10 supported by the horses 17 and the beam lower reinforcements 11 supported by the beam lower reinforcement supports 16 (see Fig. 3(a)), the beam stirrup reinforcements 13 are arranged, and then lowered once. The state in which the beam bottom reinforcement 11 is dropped into the recess 18 with the movement block 16 removed (
(See FIG. 3(b)), assemble the abdominal muscles 12 using the stopper muscles 14. Further, at the beam intersection, as shown in FIG. 4(a), a plurality of beam intersection column hoop reinforcements 15 are attached around the column reinforcement 2 between the upper beam reinforcement 10 and the lower beam reinforcement 11.

The reinforcing structure of the beam that has been assembled in this way is horse 17.
First, concrete is poured into the recess 18 of the form 8 to construct our reinforced concrete. The floors above this are formed in the same way.

However, when such a beam reinforcing structure is configured and installed in the formwork, the beam intersection column tape reinforcements 15 will be as shown in FIG. 4(a) during the formation of the beam reinforcing structure on the formwork 8. As shown in the figure, it is installed overlapping the beam bottom reinforcement 11,
At the stage of dropping the reinforcing structure of the beam into the recess 18 of the formwork 8,
As shown in FIG. 4(b), the beam intersection column hoop reinforcement 15 and the beam lower reinforcement 11 overlap the bottom of the recess 18 of the formwork 8, and the beam intersection column hoop reinforcement 1 in this overlapping state.
5 are moved, and as shown in FIG. 4(C), they are arranged and fixed at equal intervals around the column reinforcements 2. However, this work is carried out within the recess 18 in the formwork 8, and since the recess 18 is surrounded by the formwork 8, this work is extremely difficult to perform, requiring a great deal of effort and time, and
It is difficult to arrange things that should originally be evenly spaced at equal intervals because they are tilted or the distances are unequal, and an improvement to eliminate this operational bottleneck has been desired.

[Purpose of the invention]

The present invention was made in order to eliminate these problems, and its purpose is to make it possible to implement a reinforced concrete construction method that makes it extremely easy to install column hoop reinforcement at beam intersections and eliminates bottlenecks in the work. It is something to do.

[Summary of the invention]

The first invention, the reinforced concrete method, involves placing reinforced concrete for the floors and columns on the lower floor, and then joining the columns with the formwork for pouring the beams on the upper floor. The upper and lower beam reinforcements of the reinforcing bars constituting the beams on the upper floor are combined with the column reinforcements of the columns, and beam stirrup reinforcements, abdominal reinforcements, and width stop reinforcements are installed in the area excluding the column reinforcements. After forming column tape reinforcements at beam intersections on the outer periphery of the column reinforcements, when placing the upper floor beams on the formwork, the reinforcement structure of the beams is The formation of the beam is carried out by holding the lower beam reinforcement with the beam lower reinforcement supports placed horizontally in the recess for forming the beam on the formwork, and holding the upper beam reinforcement with a horse installed on the formwork. Then, with the beam intersection column hoop reinforcement arranged around the outer periphery of the column reinforcement, the beam lower reinforcement support and the horse are removed, and the reinforcing bar structure of the beam is dropped into the recess of the formwork. In the reinforced concrete construction method, in which reinforced concrete is cast to form the upper floor beams, and the upper floors are constructed in the same way, the lower beam reinforcement is placed, and before the upper beam reinforcement is placed, the area around the column reinforcement is placed. A plurality of the beam intersection column hoop reinforcements are arranged at predetermined intervals and connected to each other at predetermined intervals,
When the beam reinforcement is arranged using the horse, the uppermost hoop reinforcement of the column hoop reinforcement at the beam intersection is connected to the beam reinforcement, and the reinforcement structure of the beam is placed inside the recess of the formwork. The beam intersection column hoop reinforcements are arranged at predetermined intervals on the outer periphery of the column reinforcements, and the beam intersection column hoop reinforcement width stopper, which is the second invention, in this reinforced concrete construction method, On the formwork, the beam intersection column hoop is attached between the beam upper reinforcement and the beam lower reinforcement with the beam upper reinforcement and the beam lower reinforcement supported by the beam lower reinforcement support and the horse. a plurality of engaging bodies each having a space for engaging the column hoop muscle at a beam intersection having an opening that elastically engages with the hoop muscle; and a beam intersection connecting each of the plurality of engagement bodies. It is characterized by comprising flexible spacing pieces that maintain the column hoop reinforcements at predetermined intervals.

The present invention enables the beam intersection column hoop reinforcement assembled around the outer periphery of the column reinforcement outside the formwork to be placed around the column reinforcement while simultaneously dropping the beam reinforcement structure into the formwork and maintaining a predetermined interval. This allows for placement.

[Embodiments of the invention]

Examples will be described below.

An embodiment of the present invention is shown in FIGS. 1, 3, and 5.

This will be explained using FIGS. 6 and 7. Fig. 5 is an explanatory diagram of an embodiment of the hoop bar width stopper for a column at a null intersection used in the present invention, and Fig. 6 is an illustration of the arrangement of reinforcing bars at the time of concrete pouring in an embodiment of the reinforced concrete construction method of the present invention. 7(a) is a front view corresponding to the front view of the beam intersection seen from direction B in FIG. 1, and FIG. 7(c) is a front view corresponding to the front view of the beam intersection seen from direction B in FIG.
A front view of the beam intersection seen from the direction, FIG. 7(b) is a similar front view at an intermediate stage between FIGS. 7(a) and (c),
The same parts as in FIGS. 1 to 4 are given the same reference numerals. In these figures, 19 is a beam intersection column hoop reinforcement width stopper (hereinafter referred to as a width stopper), and this width stopper 19 is a beam intersection column hoop reinforcement engagement body (hereinafter referred to as an engagement body) 20 (
20a, 20b.

20c...) and a spacing piece 21, the engaging body 20 has a space at its center with a diameter equal to or larger than that of the beam intersection column hoop reinforcement 15, and this opening has its end face facing inward. The 1-space piece 21, which is bent and has elasticity and whose spacing is smaller than the space, is a flexible string-like body that connects the engaging bodies 20, and the beam intersection column hoop muscles 15 are spaced at a predetermined spacing. is connected so that it is equal to In this embodiment, the engaging body 20 and the clear spacing piece 21 are integrally molded from 6-nylon. This width stopper 19 can be easily attached to the beam intersection column hoop reinforcement 15 through the opening of the engaging body 20. That is, since the opening has elasticity, the beam intersection column hoop reinforcement 15 can be easily inserted into the space, and since the opening returns to its original position after the beam intersection column hoop reinforcement 15 has passed, the beam intersection column hoop reinforcement 15 can be easily overlapped. When the uppermost hoop muscle 15 is held and lowered, the space between the hoop muscles 15 is made up of flexible spacing pieces 21, so that it can always be easily formed into a blind shape. In addition, in order to easily fix the uppermost hoop reinforcement 15 to the beam reinforcement 10, the engaging body 20a at one end of this holder 19 has its opening closed to another engaging member, as shown in FIG. Combined 20b, 20
It is convenient to do the opposite.

Next, the width stopper 1 consisting of this engaging body 20 and the spacing piece 21
An example of the reinforced concrete construction method of the present invention using No. 9 will be described.

The construction method in this embodiment is also the same as the conventional construction method described above.

The process is the same until the lower movement block 16 is installed in the recess 18 on the formwork 8 and the beam bottom reinforcements 11 are arranged.Next, when the beam bottom reinforcements 11 are arranged in this way, As shown in FIG. 7(a), the beam intersection column hoop reinforcement 15 connected by the engaging body 20 and the spacing piece 21 is temporarily placed. Next, the beam reinforcement 10 is reinforced through the column reinforcement 2 and the horse 17, and the beam stirrup reinforcement 13, the abdominal reinforcement 12 and the width stop reinforcement 14 are used between the beam reinforcement 10 and the part 11 excluding the column reinforcement 2. Assemble.

Next, the beam lower reinforcement supports 16 are removed, and the beam lower reinforcements 11 are dropped into the recesses 18 of the formwork 8 and tied together. At the stage where the binding is completed, the uppermost hoop muscle of the intersection column hoop muscle 15 is attached to the engaging body 2.
It is fixed at 1° on the beam by 0a. At this stage, the intersection column hoop reinforcements 15 are arranged in a blind shape around the column reinforcements 10 as shown in Figure 7(b).Next, the horses 17 are removed and the entire reinforcement structure of the beam is molded. When dropped into the recess 18 of the frame 8, the entire reinforcing bar structure of the beam is in a state where the lower beam reinforcement 11 is held at the position of the spacer block 9, as shown in FIG. 6, and at this time, the beam intersection column The hoop reinforcements 15 are arranged around the columnar reinforcement 2 at predetermined intervals defined by the spacing pieces 21, respectively. Construction of the second floor beam is completed by pouring concrete into the formwork 8 in which the reinforcing structure of the beam is placed.

Next, the second floor is constructed, and the third, fourth, and upper floors are constructed in the same way.

In this reinforced concrete construction method, the beam intersection column hoop reinforcement 15 is connected to the beam intersection using the engaging body 20 and the spacing piece 21 when assembling the beam reinforcement structure using the lower beam movement block 16 and the horse 17. Since the column hoop reinforcements 15 are attached, the installation of the beam intersection column hoop reinforcements 15 around the column reinforcements 2 can be done without any obvious work. In other words, there is no need for time-consuming and unproductive work in difficult locations.

In addition, the structures and materials of the locking devices and spacing pieces used for this purpose are simple and easy to manufacture, and their installation is extremely easy to erect and is excellent in terms of workability and economy. Furthermore, since the placement of column hoop reinforcements at beam intersections can be reliably carried out, it is also effective in terms of the strength of the structure.

In addition, in the above embodiment, the upper beam reinforcement 10 and the lower beam reinforcement 1
Although the structure has been described in which only the columnar muscle 1 intersects with the columnar muscle 2, and the abdominal muscle 12 has no intersection with the columnar muscle 2.

Even in the case of a structure in which the end of the abdominal muscle 12 intersects with the columnar reinforcement 2, as is clear from FIG. 3(b) and FIG. 7(b), the beam Since the intersection column hoop reinforcements 15 are arranged around the column reinforcement 2 at predetermined intervals, it is not possible to arrange the abdominal reinforcement 12 to intersect with the column reinforcement 2 through between the beam support column hoop reinforcements 15. It's extremely easy.

In this embodiment, the 1-width stopper 19 is made of 6-nylon and is integrally molded, but other plastic materials or other materials may work in the same manner and produce the same effect. You can also use

〔Effect of the invention〕

INDUSTRIAL APPLICABILITY The present invention makes it possible to implement a reinforced concrete construction method that makes it extremely easy to install column hoop reinforcements at beam intersections and eliminates operational bottlenecks, and has great industrial effects.

[Brief explanation of drawings]

Figures 1 and 2 are cross-sectional views illustrating the placement of the reinforcing bars during the creation of the reinforcing structure of the beam and the time of concrete pouring using conventional construction methods, respectively, and Figure 3 (a) is A-A in Figure 1. The sectional view, FIG. 3(c) is the AA sectional view of FIG. 2, and FIG. 3(b)
) is a similar sectional view at an intermediate stage between FIG. 3(a) and FIG. 3(Q), FIG. 4(a) is a front view of the beam intersection seen from direction B in FIG. Figure (Q) is a front view of the beam intersection seen from direction B in Figure 2, and Figure 4 (b) is a similar front view at an intermediate stage between Figure 4 (a) and Figure 4 (9). , 5th
The figure is a diagram explaining the arrangement of reinforcing bars in the state of the beam intersection column foo used in the present invention, and Figure 7 (,) is a front view corresponding to the front view of the beam intersection seen from direction B in Figure 1. Figure, Figure 7 (Q)
is a front view corresponding to the front view of the beam intersection seen from direction B in Figure 6, and Figure 7(b) is a similar front view at an intermediate stage between Figures 7(, ) and 7(Q). The figure shows. 1...Foundation, 2...Column reinforcement, 7...Column relief reinforcement, 8
... Formwork, 9... Spacer block, 10... Beam reinforcement, 11... Beam reinforcement mass board, 17... Horse, 18.
... (formwork 8) recess. 19... Beam intersection column hoop reinforcement width stopper (width stopper),
20- (20a, 20b, 20cm)-beam intersection column hoop muscle engaging body (engaging body), 21... spacing piece.

Claims (1)

[Claims] 1. After placing reinforced concrete for the floor and columns on the lower floor, and with the formwork for pouring the beams on the upper floor installed, The upper beam reinforcement and beam lower reinforcement of the reinforcing bars that make up the floor beams are combined with the column reinforcement of the column, and the beam stirrup reinforcement, abdominal reinforcement, and width stop reinforcement are used in the area other than the column reinforcement to reinforcing the beam. After forming a column hoop reinforcement at the beam intersection on the outer periphery of the column reinforcement, when pouring the beam of the upper floor on the formwork, the reinforcement structure of the beam is formed using the mold. The beam lower reinforcement is held by the beam lower reinforcement supporter which is bridged in the beam forming recess on the frame, and the beam upper reinforcement is held by a horse installed on the formwork, and the beam intersection column is held. With the hoop reinforcement arranged around the outer periphery of the column reinforcement, the beam lower reinforcement support and the horse are removed, the reinforcement structure of the beam is dropped into the recess of the formwork, and concrete is poured. In a reinforced concrete construction method in which a beam for the upper floor is formed and the upper floors are constructed in the same way, the lower beam reinforcement is arranged, and before the upper reinforcement is arranged, the reinforcement is placed around the column reinforcement at a predetermined interval. When a plurality of the beam intersection column hoop reinforcements are arranged and interposed, and the beam reinforcement is reinforced using the horse, the uppermost hoop reinforcement of the beam intersection column hoop reinforcement is connected to the beam intersection section. A reinforced concrete construction method characterized in that the reinforcement structure of the beam is connected to the upper reinforcement, the reinforcement structure of the beam is dropped into the recess of the formwork, and the beam intersection column hoop reinforcement is arranged at a predetermined interval around the outer periphery of the column reinforcement. . 2. After pouring reinforced concrete for the floor and columns on the lower floor, formwork for pouring the beams on the upper floor is installed, and the beams on the upper floor to be connected to the columns are constructed. The beam upper reinforcement and beam lower reinforcement of the reinforcing bars are combined with the column reinforcement of the column, and the beam stirrup reinforcement, abdominal reinforcement, and width stop reinforcement are used in the part excluding the column reinforcement to form the reinforcement structure of the beam. After forming column hoop reinforcements at beam intersections on the outer periphery of the column reinforcements, when placing the upper floor beams on the formwork, the formation of the reinforcing bar structure of the beams is performed using the beam formation on the formwork. The beam lower reinforcement is held by the beam lower reinforcement support block bridged in the recess, and the beam upper reinforcement is held by a horse installed on the formwork, and the column hoop reinforcement at the beam intersection is connected to the column reinforcement. The beam bottom support block and the horse are removed, the reinforcing bar structure of the beam is dropped into the recess of the formwork, and concrete is poured to form the upper floor beam. In a reinforced concrete construction method in which the upper floors are constructed in the same way, the beam upper reinforcement and the beam lower reinforcement are supported on the formwork by the beam lower reinforcement support and the horse. and a plurality of engaging bodies each having a space for engaging the beam intersection column hoop reinforcement and having an opening that elastically engages with the beam intersection column hoop reinforcement installed between the lower reinforcements; A beam intersection column hoop reinforcement width stopper comprising a flexible spacing piece that connects each engaging body and maintains the beam intersection column hoop reinforcements at a predetermined interval. 3. The beam intersection column hoop reinforcement width stopper according to claim 2, wherein the engaging body and the spacing piece are integrally molded.