JP2670427B2 - Construction method of reinforced concrete columns and reinforcing bar positioning jig used for the implementation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a reinforced concrete column and a reinforcing bar positioning jig used for implementing the method.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 5, a reinforced concrete column is constructed by erecting a reinforcing bar portion 1 at a predetermined position L where the column is to be constructed, and then forming a concrete formwork 2 surrounding the reinforcing bar portion 1. After the construction, the reinforcing bar portion 1 is positioned in the formwork 2 with respect to the formwork 1, and then concrete is placed in the formwork 2 to a predetermined height. After curing the concrete, the formwork 2 is removed.

A typical example of such a reinforced concrete column is one having a quadrangular horizontal cross section, and as shown in FIG. 5, the reinforcing bar portion 1 has three longitudinal main bars 11 arranged at each corner of the horizontal cross section and these. And an auxiliary reinforcing bar 12 connected to the main bar. When viewed from a plane, a line connecting the centers of the main bars of each set of three main bars forms a right-angled triangle, and the main bars at the right-angled vertices are arranged so as to correspond to the corner angles of the columns.

The auxiliary reinforcing bar 12 is connected to the main reinforcing bar 11 so as to be circumscribed by the main reinforcing bar 11, and is connected to the main reinforcing bar 11.
The mutual interval is set to a predetermined value. In constructing the concrete formwork 2, as shown in FIG.
A cylindrical rod 211 provided with a female screw and a rod 2 having a male screw threadedly fitted to the cylindrical rod 211 provided on one side surface 2A of the generally formed formwork 2
And an adjustable telescopic support rod device 21 including a support portion 22 fixed at a predetermined position on a place L.
A chain including a turnbuckle 231 in the middle thereof,
A tensioning device 23 made of a wire or the like is tensioned between the mold side surface 2A and the support portion 22. Further, the supporting portion 2 is also provided with a supporting rod device 21 which is similarly adjustable in expansion and contraction on the side surface 2B adjacent to the one side surface 2A of the mold 2 and the lower end of which is fixed to the place L.
2 while supporting the turnbuckle 231
A tensioning device 23 including a tensioning device 23 is stretched between the side surface 2B of the mold and the support portion 22. The mold 2 is erected and fixed in a predetermined posture by the expansion and contraction adjustment of the support rod device 21 and the tensioning action of the tensioning device 23.

Before the concrete is poured, the reinforcing bar 1 is positioned in the mold 2 with respect to the mold 2. That is, the reinforcing bar 1 which is erected in a high position is tilted to form the mold 2 in a regular position and in a regular posture. This is because the position deviates from the correct position. Conventionally, a disc-shaped rebar positioning member 91 shown in FIG. 6 and a plate-shaped positioning member 92 shown in FIG. 7 have been used for positioning the rebar 1.

[0006] The disc-shaped positioning member 91 shown in FIG. 6 is fitted into the main bar 11 through a main bar through hole 911 provided in the disk-shaped positioning member 91, and the peripheral edge thereof is brought into contact with the inner surface of the form 2 to position the main bar 11.
As a result, the entire reinforcing bar is positioned. Further, the positioning member 92 shown in FIG. 7 is composed of a single plate body and is provided with a main bar through hole 921 corresponding to the regular position of the main bar.
The main bar 11 is fitted into the main bar 11 and fixed to the form 2 to position the main bar 11, and thus the entire reinforcing bar. A hole 922 for pouring concrete is provided in the center of the member 92.

[0007]

However, according to the positioning member 91 shown in FIG. 6, when the positioning member 91 is fitted into the main bar 11, the inner surface of the mold 2 is contacted with the main member 11 in a posture inclined from a vertical posture. There is a problem that they are easily contacted with each other, and thus it is difficult to obtain the positional accuracy of the main bar 11 with respect to the formwork 2. It is conceivable to make the main through hole 911 small so as to take the member 91 as vertical as possible with respect to the main bar 11, but this makes the work of fitting the member 91 into the main bar 11 cumbersome. Further, the positioning member 91 may hinder smooth and accurate placement work of concrete.

Further, according to the positioning member 92 shown in FIG. 7, since the through holes 921 for all the main bars are accurately formed in the integrated plate body, it is difficult to fit the main bars 11 through the holes, and the main bars 11 are later inserted. It is also difficult to extract from. In addition, when mounting the concrete pouring height indicator / beam support member, which is usually mounted after the positioning of the main bar, on the inner surface of the formwork 2, the positioning member 92 becomes an obstacle and the mounting work is time-consuming. There is also. Further, the concrete placing is performed by the positioning member 92.
Must be carried out through the central hole 922 of the above, and the member is an obstacle to the work. Further, for example, in the case where a plurality of sets of main bars are employed as in the above-mentioned set of three main bars, when the interval between the main bars of the pair is changed depending on the diameter of the column to be constructed, Positioning members 9 of different sizes to match it
2 must be prepared, and the pillar construction is expensive accordingly.

Therefore, according to the present invention, the rebar portion can be positioned easily and accurately in the concrete pouring formwork.
In addition, the positioning can be performed so as not to hinder the work such as mounting the concrete pouring height indicator and the beam support member on the inner surface of the formwork, and the concrete pouring work. An object of the present invention is to provide a method for constructing a reinforced concrete column that can easily and efficiently construct a reinforced concrete column.

Further, the present invention has a structure used for carrying out such a method that is simple and easy to handle, can be manufactured at a low cost, and has the same depth of the main reinforcement from the outer surface of the column and the distance between the main reinforcements in a plurality of main reinforcements forming a set. An object of the present invention is to provide a reinforcing bar positioning jig that can be diverted from each other to column constructions having different column diameters under certain conditions such as certain conditions.

[0011]

One of the methods for constructing a reinforced concrete column according to the present invention for solving the above-mentioned problems is, in one aspect, a longitudinal main bar to be arranged at a predetermined position in a horizontal cross section of the reinforced concrete column to be constructed and those. A step of standing a reinforcing bar portion including a supplementary reinforcing bar connected to the main bar at a predetermined position, a step of constructing a concrete casting formwork surrounding the reinforcing bar part, and positioning the reinforcing bar part in the formwork Process and concrete placement height marking and beam support on the inner surface of the form
The step of attaching the member , the positioning of the concrete height on the inner surface of the mold after positioning the reinforcing bar in the mold
Placing concrete in the form after the mounting of the double beam support member. In the step of positioning the rebar in the form, the rebar positioning jig may be used to fix the main rebar to a predetermined position in the form. A main frame contact portion to be brought into contact for positioning at a position, and a mold engaging portion for positioning the entire jig at the upper end of the mold so as to arrange the main bar contact portion at the main bar positioning position. The tool is engaged and positioned at a predetermined position of the mold by the mold engaging portion and detachably fixed to the mold, and a main bar corresponding to the main bar contacting portion of the fixed jig is attached from the inside of the mold. Reinforced concrete column structure characterized by being brought into contact with and detachably connected and fixed to the jig
The construction method (first construction method), the other is construction
Corner of horizontal section of reinforced concrete column
Minute longitudinal bars that should be placed for
Process of erection of reinforcing bar including auxiliary reinforcing bar in place
And construct a concrete casting formwork that surrounds the reinforcing bars.
And a step of positioning the reinforcing bar portion in the mold
After positioning the reinforcing bar in the mold,
A step of placing a cleat,
In the step of positioning the reinforcing bar portion, a reinforcing bar positioning jig is used.
In order to position the main bar at a predetermined position in the formwork
Main bar contacting part to be contacted and main bar contacting part
Position the entire jig on the upper corner of the mold so that
The formwork at the top corners of the formwork for positioning
Formwork corners from the top surface to the one outer surface that follows
From the upper surface of the mold and the mold engaging portion that can be engaged with
The corners of the form frame extending to the outer surface adjacent to the outer surface.
A jig having a formwork engaging portion that can be engaged is used as the formworker.
By engaging the corners of the form at the joint, the upper corners of the form
And removably fixed to the
A main bar corresponding to the main bar contacting part of the jig
Contact from inside and removably connect and fix to the jig
Construction method of reinforced concrete column characterized by
2), and the other is that the horizontal section is
It is a method of building a rectangular reinforced concrete column,
Rectangular horizontal section of the reinforced concrete column to be tried
Longitudinal bars and three bars to be placed in each corner of the
Reinforcing bar in place with auxiliary bar connected to
And a concrete pouring formwork surrounding the rebar part
And step of positioning the rebar part in the formwork
And the mold after positioning the reinforcing bar in the mold
In the formwork, including the step of placing concrete inside
In the step of positioning the reinforcing bar portion in
A jig that positions the main bar at a predetermined position in the mold
Main abutment portion to be brought into contact with
Place the entire jig on the top of the formwork so that it is placed in the positioning position.
A jig having a mold engaging portion for positioning is used for the mold.
The engaging part is engaged and positioned at a predetermined position on the formwork, and mounted on the formwork.
Removably fixed to the main bar contact part of the fixed jig
Attach the corresponding main bar from the inside of the mold to the jig.
Removably connected and fixed as the jig
The mold for each set of the main bars of the set of three
A jig that is fixed to the top corner of the frame,
However, each of the main bars of the set comes in contact with the main bar contacting part.
It has three positions so that it can be used and the mold engaging part
From the upper surface of the formwork to the one outer surface that follows.
The corners of the mold and the upper surface of the mold, followed by the outer surface
Engage in the corners of the form frame to the outer surface adjacent to
Use at least two places so that you can
Construction method of reinforced concrete columns characterized by (3rd
Construction method). In the second and third construction methods
Also, before the concrete is placed, the concrete inside
It is possible to attach a beam height
You.

Further, a reinforcing bar positioning jig of the present invention for solving the above-mentioned problems is a jig used for carrying out the method of the present invention, and is for positioning the main reinforcing bar of the reinforcing bar portion at a predetermined position in a mold. It has a main bar contacting part to be contacted and a formwork engaging part for positioning the entire jig on the upper end part of the formwork so that the main barn contacting part is located at the main bar positioning position. More particularly, in particular the second and third types
Reinforcement Position Used to Implement the Method of Building Reinforced Concrete Columns
Placement jig, second type of reinforced concrete
The reinforcing bar positioning jig used to carry out the method of constructing the pillar is
In order to position the main bar of the reinforcing bar at a predetermined position in the formwork
Main bar contact portion to be abutted and main bar positioning of the main bar contact portion
Position the entire jig on the upper corner of the mold so that
The formwork at the top corners of the formwork for positioning
Formwork corners from the top surface to the one outer surface that follows
From the upper surface of the mold and the mold engaging portion that can be engaged with
The corners of the form frame extending to the outer surface adjacent to the outer surface.
Iron characterized by having a formwork engaging part that can be engaged
It is a muscle positioning jig and is the third type of reinforcing bar concrete.
The reinforcing bar positioning jig used to implement the
In order to position the main bar of the reinforcing bar at a predetermined position in the formwork
Main bar contacting part to be contacted with the main bar and the main bar contacting part
Position the entire jig on the upper edge of the mold so that
It has a form engaging part for
Three concrete pillars are placed at each corner of a square concrete pillar
Pair each of the three main bars of the longitudinal main bar
Each of the main bars of the set of three main bar abutting parts
It has three places so that it can come into contact, and the formworker
From the top of the mold to the outer surface that follows
From all corners of the mold and the top of the mold,
Engage in the corners of the formwork over the outer surface adjacent to the side
Characterized by having at least two places so that they can be combined
This is a reinforcing bar positioning jig.

In the method of the present invention, the detachable fixation of the jig to the mold is simplified, for example, by screwing the jig to the mold using a screw hole provided in the jig. It is conceivable that the jig is nailed to a mold using a nail hole provided in the jig. In addition, the detachable connection of the main bar to the jig may be simple, for example, to connect the protruding member and the main bar, which are erected in advance in the jig in correspondence with the main bar, with a wire or the like.

[0014]

[0015]

According to the method for constructing a reinforced concrete columns of the [action] The present invention
Then, the reinforcing bar portion is erected at a predetermined position, and a concrete placing formwork surrounding the reinforcing bar portion is constructed. Then, the reinforcing bar positioning jig is positioned on the mold using the mold engaging portion of the jig so as to correspond to the regular position of the main bar of the reinforcing bar and is removably fixed. Next, the main bar corresponding to the jig is brought into contact with the main bar contact portion of the jig from the inside of the mold, and is detachably connected and fixed to the jig. At this time, the second and third aspects of the present invention
Construction method of concrete reinforced concrete columns and implementation of the method
According to the reinforcing bar positioning jig used, the jig is
Using the engaging part, the upper surface of the mold at the upper corners of the mold
To the one outer surface that follows and the corners of the form and
An outer surface that is continuous with the upper surface of the mold and is adjacent to the outer surface.
To the corners of the formwork,
Positioned in the corner and removably secured
Is done. Next, the main bar corresponding to the jig contacts the main bar of the jig
Part from the inside of the mold and is detachably connected to the jig.
It is fixed and fixed. At this time, the third reinforced concrete
For the method of constructing the pillar and the reinforcing bar positioning jig used for its implementation
According to this, the jig is for each set of three main bars
And detachably fixed to the upper corners of the formwork.
Each of the main bars of this set corresponds to the corresponding main bar of the jig.
It comes in contact with the contact part from the inside of the form and can be removed from the jig.
Be linked. In addition, in the first construction method,
Before placing concrete in the concrete
A sign and beam support member is attached. The second and the second
In the construction method of No. 3, if necessary, the concrete pouring height
A sign and beam support member is attached. Then the formwork
Concrete is placed inside the concrete to a specified height,
After the curing, the jig and the mold are removed. As needed,
In the same way, columns will be added and extended upward. Removal
Reused jigs and molds can be reused unless damaged.
Wear.

[0016]

[0017]

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of carrying out the method of the present invention and an example of a reinforcing bar positioning jig used for carrying out the method will be described below with reference to the drawings. FIG. 1 is a perspective view of the reinforcing bar positioning jig 3. FIG.
FIG. 3 is a perspective view showing a mounting state of the jig 3 on the mold 2 and a positional relationship between the jig 3 and the main bar 11. Figure 3 shows the rebar part 1
Reinforcing bar positioning jig 3 on concrete pouring form 2 surrounding
And the jigs 3 are used to position the rebar 1 in the formwork 2, and a concrete placement height indicating and beam supporting member 4 is attached to the inner surface of the formwork 2 to cast concrete. It is a top view. FIG. 4 is a sectional view taken along line XX of FIG.

Also in the construction of the reinforced concrete column in this embodiment, as in the conventional method, as shown in FIG. 5, the reinforcement portion 1 is erected at a predetermined position of the place L where the column is constructed, and then the concrete surrounding the reinforcement portion 1 is reinforced. The casting formwork 2 is constructed. The reinforced concrete column to be constructed here has a rectangular cross section with a horizontal section, and the reinforced concrete section 1
As shown in FIG. 5, includes three longitudinal main bars 11 arranged at each corner of a rectangular column having a cross section and auxiliary reinforcing bars 12 arranged so as to surround these main bars and are connected to the main bars. .

As can be seen from FIG. 3, each set of three main bars 11 forms a right-angled triangle when viewed from a plane, and the main bars 11 located at the right-angled vertices have corners at the two corners of the formwork. It corresponds to the part (hence the corner of the pillar). When constructing the formwork 2, as shown in FIG. 5, the formwork 2 is constructed so that expansion and contraction adjustment of the supporting rod device 21 provided on the outside faces 2A and 2B of the formwork and a tensioning action by the tensioning device 23 are performed. Thus, it is erected and fixed in a predetermined posture (here, a vertical posture).

Next, the reinforcing bar portion 1 is positioned in the mold 2 with respect to the mold 2 having the correct posture to be in the vertical posture. For positioning the reinforcing bar portion, the reinforcing bar positioning jig 3 shown in FIGS. 1 to 4 is used. The jigs 3 are arranged for each of the set of three main reinforcing bars 11 of the longitudinal main bar 11 arranged at each corner portion of a concrete column having a quadrangular horizontal section, and each of the upper end portions of the formwork 2 is arranged. It is fixed to the corner.

Each jig 3 has a recess 31 for abutting the middle main bar 11 located at the right-angled vertex of the right-angled triangle among the main bars 11 in a set of three, and the main bars 11 located on both sides of the main bar 11. It has two recesses 32 for abutting. The jig 3 is formed by processing a metal plate at low cost,
The recesses 31 and 32 are provided on the two straight edges 331 and 332 of the flat portion 33 placed on the upper end surface of the mold 2 and projecting into the upper end opening 20 (see FIG. 2) of the mold and forming right angles with each other. ing. The recess 31 is formed in a quadrangular shape in a plan view at a portion where the two edges 331 and 332 intersect at a right angle.
Is formed in a semicircular shape in plan view on each of the straight edges 331 and 332.

Of the flat portion 33 of the jig 3, the portion opposite to the one concave portion 32 is bent downward to form a mold engaging portion 341, and the other concave portion 3 is formed.
2 is also bent downward, so that the form engaging portion 34
It is 2. The mold frame engaging portion 341 is parallel to the projecting edge 331, and the mold frame engaging portion 342 is parallel to the projecting edge 332.

The overall shape and dimensions of the jig 3 and the mutual positional relationship between the main muscle contact concave portions 31 and 32 and the form engaging portions 341 and 342 are determined as follows. That is, the jig 3
The flat portion 33 is placed on the upper surface 24 of the upper corner portion of the form 2 as shown in FIG. 2, and the form engaging portions 341 and 342 are adjacent to the upper surface and the upper surface at right angles to each other. The jig 3 can be easily positioned on the mold 2 by engaging the corner portions 25 with the two outer surfaces, and when the jig 3 is positioned on the mold as described above, the main bar contact recess 31 and 32 are set so as to take the positions which correspond to the regular positions in the mold 2 of the set of three main bars 11.

In this example, the jig 3 positioned in this way is composed of the flat portion 33 of the jig 3 and the mold engaging portions 341 and 34.
A plurality of nail holes 35 (see FIG. 1) provided in 2 can be used to detachably fix to the formwork 2 with nails 30. Also, the jig 3
On the upper surface of the flat portion 33, a protrusion bar 36 for connecting main bars is provided upright at the position behind each recess 31, 32.

After the reinforcing bar 1 is erected and the formwork 2 surrounding the reinforcing bar 1 is constructed as described above, the jig 3 is moved to the position shown in FIGS.
As shown in FIG. 3, the jig flat portion 33 is placed on the upper surface of each upper corner portion of the mold 2 and the mold engaging portions 341, 34 are provided.
2 is engaged with the outer corner portion 25 of the formwork 2 to be positioned on the formwork 2 and fixed there with nails 30. Next, the main bars 11 corresponding to the jigs 3 are fitted into the main bar contact recesses 31 and 32 of the jig 3 from the inside of the form, and the respective main bars 11 are positioned at the proper positions. A wire 37 is hung on the protruding bar 36 which is erected to fix the main bar 11 and the jig 3 to each other.

Next, in this embodiment, as shown in FIGS. 3 and 4, the member 4 which also serves as the marking member indicating the concrete pouring height position in the mold 2 and the beam supporting member after the pillar construction is formed as shown in FIGS. 2 Attach it to the inner surface with bolts and nuts 41. The member 4
Is a steel member having a chevron cross section here. After that, concrete is poured into the formwork 2 up to the height indicated by the member 4.

After the concrete is cured, the wire 37 connecting the projecting rod 36 on each jig 3 and the main bar 11 is unwound, and the nail 30 fixing each jig 3 is removed from the mold 2. This jig removal work consists of releasing the wire 37,
It can be done easily by pulling out the nails 30 and can be done without damaging the formwork 2 so that it can be reused. In addition, the jig 3 itself is not damaged, or if it is present, it is extremely small.
Can be reused.

After removing the jigs 3, the form 2 is disassembled. Thus, a reinforced concrete column having a predetermined height is constructed. The removed jig 3 and mold 2 can be reused. When extending a reinforced concrete column even higher, the same work as above, extending from the already built concrete column,
Further, it may be carried out based on the extended rebar portion.

As described above, the jig 3 has a simple structure and is easy to handle, and can be easily positioned, fixed and removed from the mold 2. Further, it suffices that one jig 3 is provided for each set of three main bars 11, and the main bar contact recesses 31, 32 of the jig are provided.
Positioning of the main bar 11 in contact with the jig 3 and connection with the jig 3 can be performed easily, easily and accurately. Further, since the jigs 3 are only provided at the four corners of the upper end of the formwork, the reinforcing bar portion 1
It is possible to easily attach the concrete pouring height indicator / beam support member 4 etc. into the mold 2 after positioning
Concrete pouring can also be performed without hindrance by the jig 3 without any trouble. With these, reinforced concrete columns can be constructed easily and efficiently.

Further, even when the diameters of the columns to be constructed are different, if the depth of the set of three main bars 11 from the column outer surface and the interval between the set of three main bars 11 are the same, The same jig 3 can be used regardless of the column diameter, which is economical and the column can be constructed at low cost.

[0032]

As described above, according to the method for constructing reinforced concrete of the present invention, the positioning of the reinforcing bar portion in the concrete placing mold can be performed easily and accurately, and the positioning is performed on the inner surface of the mold. It is possible to construct concrete reinforced concrete pillars easily and efficiently so that it does not hinder the work such as the concrete pouring height marking and installation of beam support members and the concrete pouring work. Further, after the pillar is constructed, the formwork and the reinforcing bar positioning jig used for the construction can be reused except when they are damaged by repeatedly using them repeatedly.

Further, according to the present invention, the structure used for carrying out the method of the present invention is simple, easy to handle, and inexpensive to manufacture.
And under certain conditions such as the depth of the main bars from the outer side surface of the column, the number of main bars in multiple main bars forming a set, and the intervals between the main bars, etc. Can be provided. Trying to build
Reinforced concrete column at the corner of horizontal section
When arranging, the mold is used as a reinforcing bar positioning jig.
At the top corner of the frame
The corners of the formwork from the outer side and the top of the formwork
To the outer corner adjacent to the outer side.
The one that has the formwork engaging part that can be engaged with each is adopted.
When used, the jig has a simple structure and can be easily positioned on the mold
It is easy to handle. The horizontal cross section of the concrete column to be constructed has a quadrangular shape, and the reinforcing bar portion includes three longitudinal main bars arranged at each corner of the rectangular cross section and auxiliary reinforcing bars connected to the main bar. In this case, the reinforcing bar positioning jig has three main bar contact portions so that each set of three main bars can come into contact with each other, and the mold frame engaging section is formed from the upper surface of the mold frame to the following one. Continuing from the corners of the form to the outer side and the top of the form,
When a jig having at least two places so as to be able to engage with each of the corner portions of the mold extending to the outer surface adjacent to the outer surface is adopted, the jig has a simple structure and is easy to handle. The jigs that are adopted one by one for the main bars of this set enable efficient positioning of the reinforcing bar.

[Brief description of the drawings]

FIG. 1 is a perspective view of a reinforcing bar positioning jig.

FIG. 2 is a perspective view showing an attachment state of a reinforcing bar positioning jig to a concrete pouring formwork and a positional relationship between the jig and a main bar.

FIG. 3 is a plan view showing a state in which concrete is cast on a concrete casting formwork surrounding a reinforcing bar portion.

FIG. 4 is a sectional view taken along line XX of FIG. 3;

FIG. 5 is a perspective view of a reinforcing bar portion standing upright at a predetermined position and a concrete pouring formwork constructed so as to surround the reinforcing bar portion.

FIG. 6 is a plan view showing a conventional example of positioning a reinforcing bar in a formwork.

FIG. 7 is a plan view showing another conventional example of a reinforcing bar positioning member.

[Explanation of symbols]

 L Reinforced concrete column construction place 1 Reinforcing bar part 11 Main bar 12 Auxiliary rebar 2 Formwork for concrete placement 2A Outside surface of formwork 2B Outside surface 2B adjacent to outside surface 2A of formwork 21 Support rod device 22 Support part 23 Extension Device 24 Upper end face of formwork 2 25 Corner part between upper end face of formwork 2 and outer side following it 3 Reinforcing bar positioning jig 31, 32 Main bar contact recess 33 33 Flat part of jig 3 341, 342 Formwork engagement Part 35 Nail hole 30 Nail 36 Protrusion bar for connecting main bars 37 Wire 4 Concrete pouring height indicator and beam support member 5 Concrete

Claims (7)

(57) [Claims] 1. A step of vertically arranging a reinforcing bar portion including a vertical main bar to be arranged at a predetermined position in a horizontal cross section of a reinforced concrete column to be constructed and an auxiliary reinforcing bar connected to the main bar at a predetermined position, A step of constructing a concrete casting form surrounding the reinforcing part, a step of positioning the reinforcing part in the form, and forming a concrete on the inner surface of the form.
The step of attaching the driving height indicator and beam support member , and the positioning of the reinforcing bars in the formwork , and the connection to the inner surface of the formwork.
A step of placing concrete in the formwork after attaching the cleat placement height marking and beam support member, and in the step of positioning the reinforcing bar portion in the formwork, the reinforcing bar positioning jig and the main bar For contacting the main jig to position the main jig at a predetermined position in the formwork, and a formworker for positioning the entire jig on the upper end of the formwork so that the mainstay contacting part is located at the main-use position. A jig having a mating portion is engaged and positioned at a predetermined position of the mold by the mold engaging portion and is detachably fixed to the mold, which corresponds to the main bar contact portion of the fixed jig. A method for constructing a reinforced concrete column, characterized in that a main bar is brought into contact with the inside of a formwork and detachably connected and fixed to the jig. 2. A reinforced concrete column to be constructed
With the longitudinal main bars that should be placed in the corners of the horizontal section
Predetermined reinforcing bar parts including auxiliary reinforcing bars connected to the main bars
And the concrete that surrounds the reinforcing bars.
The step of constructing the casting form, and the reinforcing bar portion in the form
And the positioning of the rebar within the formwork
And including the step of placing concrete in the form,
In the step of positioning the reinforcing bar portion in the mold,
It is a muscle positioning jig and the main muscle is placed at a predetermined position in the mold.
Main bar contacting part to be contacted for positioning and main bar contact
Mold the entire jig so that the contact part is located at the main bar positioning position.
Top corner of the formwork for positioning at the top corner of the form
From the top surface of the formwork to the one outer surface that follows
Form frame engaging part capable of engaging with the corner part of the form frame
From the top to the outer surface next to the outer surface
All molds have a frame engaging part that can engage with the corners of the frame.
The tool by engaging the corners of the mold with the mold engaging portions.
Can be removed while positioning on the top corner of the formwork
To the main bar contact portion of the fixed jig.
Abut the corresponding main bar from the inside of the form and remove it from the jig.
A method for constructing a reinforced concrete column, characterized by connecting and fixing as much as possible . 3. The inner surface of the formwork before the concrete is poured.
Attach concrete pouring height indicator and beam support member to
The method for constructing a reinforced concrete column according to claim 2 . 4. Reinforced concrete having a rectangular horizontal cross section
This is a method of constructing a pillar, and
Three pieces are arranged at each corner of the rectangular horizontal section of the pillar.
To include the longitudinal main bar and the auxiliary reinforcing bar connected to the main bar.
The step of standing the reinforcing bar at a predetermined position, and surrounding the reinforcing bar
And a step of constructing a concrete pouring formwork,
Of positioning a part in the mold, and a mold for the reinforcing bar part
Placing concrete in the mold after positioning in the frame
Positioning the rebar within the formwork, including the steps
In the step of forming,
Abutment of the main bar to be contacted to position it in a predetermined position
The main part and the main bar contact part at the main bar positioning position
Form engagement for positioning the entire jig on the upper end of the form
The jig having the part is engaged at the predetermined position of the mold with the mold engaging part.
Position and removably secure to the form,
The main bar corresponding to the main bar contact part of the jig
Abut on the side and removably connect and fix to the jig
Then, as the jig, that of the main bar of the set of 3 pieces
For each set, the jig fixed to the upper corner of the formwork
And a set of three main muscle contact portions
If you have three places so that each of the main bars can contact
In both cases, the mold frame engaging portion is connected to the mold frame from the top surface to the subsequent one.
Corners of the two outer surfaces and the upper surface of the mold.
Then, the formwork angle to the outer surface adjacent to the outer surface
Has at least two points to engage each part
Reinforced concrete concrete characterized by adopting
How to build a pillar. 5. The inner surface of the formwork before the concrete is poured.
Attach concrete pouring height indicator and beam support member to
The method for constructing a reinforced concrete column according to claim 4. 6. The structure of the reinforced concrete column according to claim 2.
A reinforcing bar positioning jig used for carrying out the construction method,
In order to position the main bar of the reinforcing bar at a predetermined position in the formwork
Main bar contacting part to be contacted and main bar contacting part
Place Place the entire jig on the upper corner of the formwork.
The formwork at the top corners of the formwork for positioning
Formwork corners from the top surface to the one outer surface that follows
From the upper surface of the mold and the mold engaging portion that can be engaged with
The corners of the form frame extending to the outer surface adjacent to the outer surface.
Iron characterized by having a formwork engaging part that can be engaged
Muscle positioning jig. 7. The structure of the reinforced concrete column according to claim 4.
A reinforcing bar positioning jig used for carrying out the construction method,
In order to position the main bar of the reinforcing bar at a predetermined position in the formwork
Main bar contacting part to be contacted and main bar contacting part
Position the entire jig on the top edge of the mold so that it is placed in position
Has a formwork engaging part for
Three pieces should be placed at each corner of the concrete pillar.
Corresponds to each set of the main bar of the three longitudinal main bars
Yes, the main bar contact parts should be in contact with each of the three main bars.
It has 3 places so that it can come into contact with it
From the top of the mold to the outer surface that follows
The corners of the mold and the top of the mold, followed by the outside
Engage with the corners of the formwork to the outer surface adjacent to the surface
Characterized by having at least two places so that
Reinforcing bar positioning jig.