JPH10137884A - Method for arranging rc structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for arranging an RC structure capable of efficiently and spirally winding a coil-shaped hoop reinforcement produced in shop and wound around a reel according to the sectional shape of a pier at a work site, eliminating the variance of the strength caused by a variety of formed connection parts of the hoop reinforcement, eliminating the insufficient quality of the RC structure, and improving the reinforcement arrangement precision and the execution property. SOLUTION: In a method for arranging an RC structure to be constructed around a pier, a hoop reinforcement 12 around which a reinforcement is continuously wound in a coil in advance is prepared, is wound in a coil around a plurality of main reinforcements 11 to be erected with appropriate pitches around the pier while the hoop reinforcement is gradually released, and then, the wound hoop reinforcement 12 is spirally wound around the main reinforcement 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement of an RC structure for arranging a main bar and a hoop bar around an existing pier, and for arranging a main bar and a hoop bar at desired positions when constructing a new pier. Regarding the muscle method.

[0002]

2. Description of the Related Art In recent years, based on the reflection of the collapse of RC piers on expressways following the 1995 Great Hanshin Earthquake, the design standards for piers have been reviewed, new piers have been constructed based on the new design standards, and existing piers have been constructed. Reinforcement works to reinforce the piers have been extensively implemented. In this reinforcing work, a so-called steel sheet winding method in which a steel sheet is wound around a pier and then grout is packed between the pier and the steel sheet is mainly used. this is,
Conventionally, when constructing an RC structure, a hoop is wound around a main bar that is vertically stood for the purpose of restraining shearing and buckling of the main bar.
This is because the inspection results of the structural piers usually indicated that the hoop reinforcing bars in the form of two to four segments were connected by lap joints, joints with hooks, flare welded joints, and the like, and thus, there was variation in the strength of the joints.

[0003]

However, there is a problem that the steel sheet winding method is very costly. Therefore, in order to reduce the number of the connecting portions formed by using inexpensive reinforcing bars, a method of spirally winding a long hoop bar around the existing pier has been considered. However, there is a problem that there are limitations in terms of transportation for transporting the hoop streaks and production equipment for production. Further, even if it can be produced in a factory, when a long spiral hoop streak is to be inserted into a pier, the upper and lower portions of the pier have large structures, so that the spiral-shaped long hoops are large. There was a problem that it was impossible to insert a long hoop muscle on a pier. In addition, since the piers vary in size, there is a problem that it is difficult to produce and supply a pier that can be applied to all piers. Therefore, a hoop rebar that is factory-produced and wound on a reel can be spirally wound at the construction site according to the cross-sectional shape of the pier.
In addition, there is a need for a method of spirally winding the hoop muscle around the main muscle when constructing a new pier.

The present invention has been made in view of such circumstances, and a coil-shaped hoop resembling a factory-produced coil wound on a reel can be efficiently spirally formed at a construction site in accordance with the cross-sectional shape of a pier. It can be wound well, and as a result, it is possible to eliminate the need for skilled technicians who are required to connect the conventional two-to-four-piece hoop muscle, and to form the connection part of the hoop muscle. Eliminates the variation in strength due to the large number and eliminates the quality instability of the RC structure, which not only improves the accuracy of reinforcement and workability, but also builds a new pier. Also, it is an object of the present invention to provide a method for arranging an RC structure in which a coil-shaped hoop wound on a reel can be efficiently spirally wound around a main muscle erected at a required position. Eye To.

[0005]

According to the present invention, there is provided a semiconductor device comprising:
The described method of arranging RC structures is a method of arranging RC structures constructed around a pier, wherein a hoop rein in which a reinforcing bar is continuously wound in a coil shape in advance is prepared, and the hoop rein is provided. While gradually unwinding, winding around a plurality of main bars standing at an appropriate pitch around the pier in a coil shape, and then winding the coiled hoop bars spirally around the main bar. . According to a second aspect of the present invention, in the method of arranging an RC structure according to the first aspect, the hoop reinforces the hoop rein in which the rebar is coiled continuously in advance. While straightening into a coil shape having a radius of curvature, by feeding on an annular platform having a roller conveyor surrounding the pier, or an annular rotary platform running around the pier, around the plurality of main rebars Wrap in a coil. According to a third aspect of the present invention, in the method of arranging an RC structure according to the first aspect, the hoop reinforces the hoop reinforced by winding the rebar continuously in a coil shape. From a trolley that can run around the pier,
The cart is wound around the plurality of main rebars by rotating the bogie around the pier while feeding while correcting and feeding the bogie into a coil shape having a predetermined radius of curvature.

According to a fourth aspect of the present invention, there is provided a reinforcing member for an RC structure,
A method of arranging a RC structure to be constructed around a pier, wherein a hoop rebar in which a reinforcing bar is continuously wound in a coil shape is prepared in advance, and the hoop rebar is gradually unwound while being appropriately wound around the pier. It is wound spirally around a plurality of main bars standing at a pitch. According to a fifth aspect of the present invention, in the method of arranging an RC structure according to the fourth aspect, the hoop reinforces the hoop reinforced by winding the rebar continuously in a coil shape. While being corrected into a coil shape having a radius of curvature of the above, it is fed to an annular suspension machine having a chain conveyor orbiting around the pier, thereby being spirally wound around the plurality of main reinforcing bars. Claim 6
The reinforcing bar arrangement method of an RC structure according to any one of claims 1 to 5, wherein each of the main reinforcements is radially inward of a predetermined main reinforcement normal reinforcement arrangement position. After provisionally fixing the main muscles, the hoop muscles are wound around the respective main muscles to form a spiral shape, and then the respective main muscles are moved to the main muscle regular arrangement positions, and the respective main muscles are moved. And the spiral hoop muscle. According to a seventh aspect of the present invention, there is provided a method of arranging a reinforcing member for an RC structure, comprising the steps of:
In the method of arranging the structural bodies, the spiral hoops are maintained at a predetermined interval by vertically supporting hoops supported by hanging members.

Here, the "main bar normal bar arrangement position"
When reinforcing a pier based on a new design standard, "covering" is applied to the thickness of the RC structure built around the pier.
The position of the main muscle arrangement determined in consideration of
In 4 (b), reference numeral P _1). Further, when a “predetermined gap” is provided radially inward of the “main bar normal bar arrangement position” to temporarily fix the main bar, the “gap” is 20 to 40 mm,
It is desirable to set it to 30 to 40 mm. This is because when the “gap” is less than 30 mm, the “gap”
Is too narrow, making it difficult to wind or wind the coiled hoop muscle in a spiral shape.
This is because when the thickness is less than 0 mm, the tendency becomes remarkable.
Conversely, if the distance exceeds 40 mm, it takes time to move the main muscle to the “main muscle normal arrangement position” (see FIGS. 8, 14, and 15). Further, when the hoop streaks wound in a coil shape are corrected into a coil shape having a “predetermined radius of curvature”, the “predetermined radius of curvature” is the hoop streaks with respect to the “main bar normal bar arrangement position”. And the hoop rebar arrangement position determined in consideration of the shrinkage of the hoop muscle in the radius of curvature direction when winding or winding the coil-shaped hoop muscle in a spiral shape (FIGS. 8 and 14).
Among refers to the radius of curvature of the reference numerals P _3).

[0008] Further, the hoop streaks wound in a coil shape in advance,
While correcting and feeding the bogie around the pier while correcting it into a coil having a “predetermined radius of curvature”, the bogie is wrapped around the pier and wound around the main muscle in a coil shape. In this case, the cross-sectional shape of the pier (particularly, the pier) is not particularly limited, and may be a circular shape, an elliptical shape, a square shape, or the like.
Applicable to piers of various cross-sectional shapes. However, an annular platform having a roller conveyor surrounding the pier, or an annular rotary platform traveling around the pier, while correcting the hoop streaks wound in advance in a coil into a coil having a “predetermined radius of curvature”. When fed above and wound in a coil around the main reinforcement, or fed to an annular suspension machine having a chain conveyor orbiting around the pier, and spirally wound around the main reinforcement, the cross section of the pier If the shape is an elliptical shape, a square shape, or the like, the above-mentioned “predetermined gap” cannot be secured, so that the cross-sectional shape of the pier (particularly, the pier) is desirably a circular shape. The reinforcing member arranging method of the RC structure of the present invention can be applied to an existing or new highway, a bridge, a monorail, and other RC piers, an SRC pier, and various other piers.

When a new pier is to be constructed based on a new design standard, for example, a predetermined "gap" is provided radially inward from a required "main reinforcement normal reinforcing position" when constructing a new pier. After temporary fixing, the hoop muscle is wound around the main muscle in a coil shape, and then wound up in a spiral shape, or the hoop muscle is wound in a spiral shape, and then the main muscle is moved to the `` main muscle normal arrangement position ''. The main muscle and the spiral hoop muscle may be bound by moving. In this case, the “main reinforcing bar regular arrangement position” refers to a main reinforcing bar arrangement position determined according to the size of a pier designed based on the design standard. The “gap” is the same as the “gap” described above. Further, in this case, similarly to the above, a hoop rebar in which a rebar is continuously wound in a coil shape in advance,
While correcting the coil into a coil having a predetermined radius of curvature, the sheet may be fed onto an annular platform having a roller conveyor surrounding the main bar or an annular rotary table running around the main bar and wound in a coil shape. In addition, a hoop rebar in which a rebar is continuously wound in a coil shape in advance, from a bogie that can run around the main rebar, while feeding while correcting it into a coil shape having a predetermined radius of curvature,
The cart may be wound around the main bar and wound in a coil shape. Further, while correcting the hoop rebar in which the rebar is coiled continuously in advance into a coil having a predetermined radius of curvature, the hoop rebar is fed to an annular suspension machine having a chain conveyer orbiting around the main rebar and the spiral. It may be wound in a shape.
Further, the spiral hoops may support the hoops vertically adjacent to each other with a suspender, and may maintain a predetermined interval.

Therefore, in the method of arranging the RC structure according to the first to seventh aspects, since the reinforcing steel is used as compared with the conventional steel sheet winding method, the manufacturing cost can be reduced and, of course, the coil is previously wound in a coil shape. Since the spiral hoop is wound around the main reinforcement around the pier while gradually unraveling the hoop reinforcement that was used at the construction site, it is not possible to arrange a long spiral hoop reinforcement on the pier conventionally. Transportation and production equipment constraints, and on piers,
Problems such as difficulty in inserting a hoop muscle due to the presence of a large structure at the lower part can be solved, and reinforcement can be arranged on a pier. In addition, it is possible to eliminate the quality anxiety caused by the variation in strength due to the large number of connecting portions of the hoop muscle, which was pointed out in the conventional method of constructing the RC structure, and to connect the hoop muscle. A skilled technician can be dispensed with, and the reinforcement can be easily and accurately arranged. Also, for example, when connecting the hoops by flare welding, it is necessary to overlap the ends of adjacent hoops, so that the so-called overlap loss has occurred in the hoops. Can also.

In particular, in the method for arranging RC structures according to the second and fifth aspects, it is possible to easily perform the arranging work on the pier having a circular cross section. In the method for arranging RC structures according to claim 3, for example, the hoop reinforcement wound in a coil shape in advance is corrected into a coil shape having a “predetermined radius of curvature” while the “cross-section is an elliptical shape or a corner”. When feeding and winding on an annular platform having a roller conveyor surrounding a pier such as a `` shape '', or an annular rotating platform running around a pier, the `` gap '' between the main bar and the hoop bar wound around the main bar varies. Become. For this reason, in a portion where the “gap” is too wide, it takes time to move the main bar to the “main bar normal bar arrangement position”. Conversely, in a portion where the “gap” is too narrow, in the worst case, around the main bar. When winding or winding the coiled hoop muscle in a spiral shape, the main muscle may come into contact with the hoop muscle and may not be able to be wound or wound. Therefore, regardless of the cross-sectional shape of the pier, a `` predetermined gap '' is maintained around the main bar, and the hoop streaks are easily spiraled by making a bogie that can run around the pier rotate around the pier. Can be wound.

According to a sixth aspect of the present invention, the hoop muscle wound in a coil around the main muscle is wound up spirally, and the hoop muscle is spirally wound around the main muscle. In this case, the inner diameter of the spiral hoop streak becomes small, and the hoop streak comes into contact with the main streaks, which may make construction difficult. Therefore, by arranging the main reinforcement with a “predetermined gap” radially inward from the “predetermined main reinforcement normal reinforcement arrangement position”, this problem can be solved and the reinforcement arrangement work can be easily performed. Claim 7
In the method for arranging RC structures according to the description, for example, when winding up a coiled hoop muscle into a spiral shape,
Due to the weight of the hoop muscle, the interval between the vertically adjacent hoop muscles may gradually increase from below the hoop muscle upward. However, since the hoops vertically adjacent to each other are supported by the suspenders, the intervals between the hoops vertically adjacent to each other can be equalized. Further, it is possible to prevent the curvature radius of the hoop muscle from changing.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Note that the same reference numerals are given to the same components in each embodiment, and the description will be omitted. (First Embodiment) First, referring to FIG. 1, an RC structure which is an example of a pier to which a method of arranging a reinforcing member for an RC structure according to a first embodiment of the present invention can be suitably applied. Pier A
Will be described. As shown in the figure, RC structure pier A
Is a footing foundation (or a lower part of a pillar) A1 standing in the soil, a vertically long columnar pier (or a pillar abdomen) A2 erected on the footing foundation A1, and a horizontal pier on the pier A2. And a substantially rectangular parallelepiped abutment bearing portion (or referred to as a capital) A3.

Next, a method for arranging the RC structure according to the present embodiment will be described in detail with reference to FIGS. First, as shown in FIG. 1, the periphery of the lower part of the pier A2 buried in the soil is dug up until the upper surface of the footing foundation A1 is exposed. In the drawing, reference numeral 24 is the ground GL.
It is a pit formed by excavating. Next, as shown in FIG. 8 and FIG.
Install. As shown in FIG. 15, the setup hardware 10 has a horizontally long rectangular flat plate portion 10b having a horizontally long elongated hole 10a at the center, and a flat plate portion 10b extending from the lower end center portion of the flat plate portion 10b. And a male threaded portion 15a of a hexagon socket head cap screw 15 inserted into the long hole 10a and screwed into an embedded nut 16 embedded in a predetermined portion of the pier A2. It can be attached.

In this embodiment, as shown in FIG. 8 and FIG. 9, at intervals of about 2 m in the height direction of the pier A2, and in areas where the pier A2 is divided into four parts in plan view, three areas are provided. Assume that two setup hardware 10 are attached. Further, at the time of construction, a main gap 11 described later is provided with a predetermined gap S ₁ (S ₁ = 30 to 40 mm in the present embodiment) radially inward of the main bar normal arrangement position P ₁ (when completed). Position P
The length of the hexagon socket head bolt 15 of the setup hardware 10 is adjusted in consideration of the radius of the setup bar 13 to be described later so as to be attached to the base ₂ (see FIGS. 8 and 14). Next, as shown in FIG. 2, FIG. 8, and FIG.
Attach the setup streaks 13. In the present embodiment,
It is assumed that a substantially four-part arcuate shape is used as the setup line 13. At this time, the end of the setup streaks 13 may be overlapped with the end of the adjacent setup streaks 13 or may be abutted.

Next, as shown in FIGS. 2 and 8, the main reinforcement 11 is temporarily fixed to the setup reinforcement 13 with a binding wire or a binding number wire (not shown). Note that the main reinforcement 11 is attached at a suitable pitch (100 to 150 mm in the present embodiment) in the circumferential direction of the setup reinforcement 13 and over the entire height of the pier A2. When the height of the pier A2 is high, the main bar 11 may be connected by a joint 17 as shown in FIG. 2 in order to secure a length over the entire height of the pier A2. In this case, the joint position of every other main bar 11 is shifted. However, the displacement length L ₁ of the joint 17 is 35D when the diameter of the main bar 11 is D.
４５45D (40D in the present embodiment). Next, the pulley devices 14 are attached to both ends of the abutment support A3, and winches (not shown) are installed on the ground GL. Also, as shown in FIGS. 3 to 5 and FIG. 9, a reel for winding the long hoop streaks 12 produced at the factory with an appropriate radius of curvature (about 2.5 m in the present embodiment) on the ground GL. 1
And a support 19 for rotatably supporting the support 8.
After correcting the hoop 12 fed from the reel 18 in a straight line, hoop against the main reinforcement normal reinforcement position P ₁ 12
Hoop muscle arrangement position P determined in consideration of the radius of curvature of the hoop muscle 12 and the amount of shrinkage in the radius of curvature direction of the hoop muscle 12 when the hoop muscle 12 wound in a coil around the main muscle 11 is spirally wound. A hoop processing machine 20 for correcting the coil into a coil shape having a predetermined radius of curvature (approximately 3 to 4 m in the present embodiment) corresponding to ₃ and a hoop muscle 12 corrected by the hoop processing machine 20 around the main muscle 11. And an annular base 21 to be wound.

As shown in FIG. 9, the hoop processing machine 20 has a pinch roll group 2 for straightening the hoop streaks 12 fed from the reel 18 onto a frame 20a.
0b and, those having a straightening rolls 20c for correcting the predetermined radius of curvature corresponding to the hoop 12 which is corrected linearly hoop reinforcement position P ₃ by the pinch rolls 20b, the straightening roll each roll position of the group 20c is capable appropriately changed in accordance with the main reinforcement normal reinforcement position P ₁ or hoop reinforcement position P ₃ equivalent thereto varies depending RC structure piers a. Of course, pinch roll group 2
Ob and at least one roll of the straightening roll group 20c are rotatably driven by an electric motor which is an example of a rotary drive source (not shown). Further, as shown in FIGS. 9 and 10, the annular base 21 has an arc-shaped table 21c having a two-part arc shape and a rotatable rotatably mounted on the arc-shaped table 21c at an appropriate pitch in a circumferential direction. A pair of roller conveyors 21j each having a roller 21a and a plurality of guide rollers 21b which are attached with an appropriate pitch in the circumferential direction of the outer peripheral edge on the arc-shaped table 21c and are rotatable around a vertical axis (not shown). They are connected by connecting means (not shown). In addition, the above-mentioned roller 21a is a long, two-divided arc-shaped support plate 21d attached in the circumferential direction of the inner peripheral edge on each arc-shaped table 21c, and the outer peripheral edge on each arc-shaped table 21c. Support plate 2 mounted at an appropriate pitch in the circumferential direction
1e, it is rotatably supported.

Further, two or more rollers 21a (eight rollers 21a, which is a half of the total number in this embodiment) among the above-mentioned rollers 21a are connected to a geared motor 21f which is an example of a rotary drive source. , And is rotationally driven. Therefore, the hoop streaks 12 wound on the annular base 21 can be rotated on a roller conveyor 21j having a roller 21a rotated by a geared motor 21f. A mounting table 21g on which the above-described geared motor 21f is mounted extends at an appropriate pitch in the circumferential direction on the outer peripheral edge of each arc-shaped table 21c. In FIG. 10, reference numeral 21h denotes a buffer stand laid under the geared motor 21f. The guide roller 21b of the annular base 21
As shown in FIGS. 3 to 5, the upper end position of the pinch roll group 20 b of the hoop processing machine 20 and the straightening roll group 20
It is set to be lower than the installation position of c. Thereby, the hoop streaks 12 fed from the hoop processing machine 20
Can be easily and coiled around the inside of the guide roller 21b while preventing it from being wound around the outside of the guide roller 21b.

In place of the annular base 21, FIG.
1. It is also possible to use an annular base 67 as shown in FIG. In addition, as shown in FIG.
An arc-shaped table 67c having a two- to four-part arc shape, a rotatable roller 67a mounted on the arc-shaped table 67c with a suitable pitch in the circumferential direction, and a substantially central portion on the arc-shaped table 67c A pair of roller conveyors 67k having a plurality of guide rollers 67b, which are mounted with a proper pitch in the direction and are rotatable about a vertical axis (not shown), are connected to each other by connecting means (not shown). In addition, each roller 67a is provided with a support plate 67d which is attached at an appropriate pitch in the circumferential direction of the inner peripheral edge on each arc-shaped table 67c, and each arc-shaped table 6c.
It is rotatably supported by a support plate 67e which is attached at an appropriate pitch in the circumferential direction at a substantially central portion on 7c. One shaft 67f of each roller 67a extends into a gear box 67g mounted on the outer side in the normal direction, and the other gear box 6g is extended from the gear box 67g.
It is interlocked with a shaft 67h extending over 7g. Although not shown, one of the gearboxes 67g is connected to one of the gearboxes 67g with a motor that is an example of a rotary drive source, whereby each of the gearboxes 67g is interlocked with the shaft 67h via the shaft portion 67f. The roller 67a is driven to rotate. In FIG. 12, reference numeral 67j represents
This is a buffer table on which the gear box 67g is placed.

Further, an annular turntable 68 as shown in FIG.
Can also be used. As shown in the figure, the annular turntable 68 has a rotatable roller 68a, which is formed in a two-to-four-division arc shape and is provided at an appropriate interval in the lower circumferential direction thereof. A pair of arc-shaped tables 68c each having a plurality of guide rollers 68b rotatable around a vertical axis (not shown) and attached at an appropriate pitch in the circumferential direction are connected by connecting means (not shown). Note that each roller 68a has a support plate 68d attached at a proper pitch in the circumferential direction of the lower inner peripheral edge of each arc-shaped table 68c, and a suitable roller in the circumferential direction of the lower outer peripheral edge of each arc-shaped table 68c. It is rotatably supported by a support plate 68e attached with a pitch. Each roller 68a is connected to a geared motor, which is an example of a rotation drive source (not shown), and is driven to rotate. Note that in FIG.
Is a traveling platform such as an iron plate placed on the uneven ground GL so that the above-mentioned annular rotating platform 68 can travel smoothly around the RC structure pier A.

[0021] Then, each roll position of the straightening rolls 20c hoop machine 20, after adjusting in accordance with the main reinforcement normal reinforcement position P ₁ or hoop reinforcement position P ₃ in accordance therewith of RC structures piers A, The winding of the hoop muscle 12 is started.
At this time, about 1.5 turns of the hoop streaks 12 are wound on the annular base 21 and the hoop streaks 1
Unite 2 to make a reference circle. Then, while continuously feeding the hoop streaks 12 from the hoop processing machine 20 onto the annular base 21, the hoop streaks 12 are wound up. In addition, the hoop muscle 12 is wound in a coil shape on the annular base 21 by the weight of the hoop muscle 12 (see FIG. 3). When the above-described annular base 67 is used, the same operation as described above is performed. When the above-described annular rotary base 68 is used, the feeding speed of the hoop streaks 12 fed from the hoop processing machine 20 is reduced. Accordingly, the annular turntable 68 is made to revolve around the pier A2. When using the annular turntable 68,
It is assumed that the tip of the hoop streak 12 supplied from the hoop processing machine 20 is fixed to one guide roller 21b with a binding wire or a binding number wire.

Next, when the hoop streaks 12 for one coil (one reel) wound on the reel 18 are finished to be wound on the annular base 21, the hoop streaks of the next hoop streak 12 can be processed. Lift the hoop muscle 12 to the upper part of FIG.
reference). At this time, a spacer 22 (see FIG. 14) having an S-shaped cross section, which is an example of a suspending tool, is attached to the hoop streaks 12 vertically adjacent to each other while maintaining a suitable pitch in the height direction (100 to 100 in this embodiment). 150 mm), and the hoop streaks 12 are spirally wound up. However, the lower 1.5 turns wrap with the next hoop streaks 12,
(Attaching the spacer 22 to the hoop streaks 12 vertically adjacent to each other) No pitching is performed. In FIG. 4,
Reference numeral 23 denotes a rope tied from the winch to the hoop muscle 12 via the pulley device 14. Next, the hoop streaks 12 wound on the new reel 18 are moved in the same manner as described above.
It is wound in a coil shape on the annular base 21. And 1
After winding the hoop streaks 12 for the coil, the hoop streaks 12 that have been lifted upward are lowered to just above the newly wound hoop streaks 12 on the annular base 21 and wrapped about 1.5 turns. The wrapped part is bound with a binding wire or a binding number wire. Then, in the same manner as described above, pitching is performed while lifting up, and the hoop streaks 12 are spirally wound up as shown in FIG.

Next, the lowermost hoop streaks 12 wound on a new reel 18 are wound in a coil shape on an annular base 21 (see FIG. 4). When the winding of the hoop streaks 12 for one coil is completed, the spiral hoop streaks 12 that have been lifted upward are replaced with the coil hoop streaks 12 that are newly wound on the annular base 21 as shown in FIG. After it is lowered to just above and wrapped for about 1.5 turns, the wrapped portion is bound with a binding wire or a binding number wire.
Then, without raising the pitch, the bundle is temporarily lifted upward (for example, slightly floating from the annular base 21) in a bundle. This is because the hoop streak 12, which is the lowermost stage, has a portion that enters the vertical hole 24, and when pitching is performed, there is no lifting allowance, and it is not possible to perform complete pitching to the lowermost portion. Next, as shown in FIG.
9. After removing the hoop processing machine 20 and the annular base 21, the hoop streaks 12 lifting upward are lowered onto the footing foundation A1, and the lower end of the hoop streaks 12 is moved to the footing foundation A.
1 or to the main bar 11. After that, while performing pitching while attaching the spacer 22 to the bottom hoop streaks 12 temporarily fixed with a rope (not shown) or the like, again,
By lifting upward, the upper end of the hoop bar 12 is fixed to the abutment support A3 or the main bar 11. Thereby, as shown in FIG. 7, the arrangement of the spiral hoops 12 can be completed over the entire height of the pier A2. Finally, as shown in FIG. 8 and FIG. 14, the main bars 11 narrowed inward as described above are adjusted to the set-up hardware 10 so as to reach a predetermined main bar regular bar arrangement position P ₁ (until the hoop bars 12 are hit). ), The main muscles 11 and the hoop muscles 12 are bound and completed. In addition, as shown in FIG. 16, when the hoop streaks 12 are not pitched out and are once lifted up in a bundle, the main streaks 11 are moved in parallel with the removal of the support base 19 and the like, and the main streaks are placed at the normal bar arrangement position P. You may move it to ₁ .

As described above, according to the method of arranging the RC structure according to the present embodiment, since the reinforcing bar is used, not only the manufacturing cost can be reduced, but also the conventional method of constructing the RC structure is pointed out. The variation in the strength of the connected portion of the hoop muscle, which has been occurring, can be eliminated. In addition, conventionally, a skilled technician was required to connect the hoop muscle, but this can be eliminated. In addition, since the hoop streak 12 is wound around the pier A2 having a circular cross section, there is no need to provide a bent portion on the hoop streak 12, and it is sufficient to simply wind the hoop streak, and efficient work can be performed in a short time. Properties and workability can be improved. Of course, when the long hoop muscles 12 are arranged in a spiral around the main muscles 11, the main muscles 11 are moved to the normal main muscle arrangement position P _1.
Since more radially inward with a predetermined clearance S ₁ temporarily fixed, it is possible to prevent the main bars 11 gets in the way. That is, in a state in which a plurality of main reinforcements 11 to the main reinforcement normal reinforcement position P _1, after winding the hoop 12 coiled around the plurality of main bars 11, when rolling up the spiral, the inner diameter of the hoop 12 Can be prevented from becoming smaller and being unable to be spirally wound (in contact with the main bar 11). Further, the hoop streaks 12 wound in advance on a reel are corrected into a coil shape having a constant radius of curvature by a hoop processing machine 20, and the hoop streaks 12 wound in a coil shape around the main streaks 11 are cross-sectioned. S-shaped spacer 22
Since they are provided at the same pitch in the height direction, the arrangement accuracy of the reinforcing bars can be improved. In addition, as described above, the strength of the RC structure constructed around the RC structure pier A can be set to a desired strength due to the improvement in the arrangement accuracy of the reinforcement, and the safety and reliability can be improved. .

(Second Embodiment) Subsequently, referring to FIGS. 1, 2, 6 to 8, and 14 to 21, an RC structure according to a second embodiment of the present invention will be described. Will be described. First, similarly to the first embodiment of the present invention, after digging around the lower part of the pier A2 buried in the soil (see FIG. 1), the setup hardware 10 is attached to a predetermined portion of the pier A2 (see FIG. 1). 8, see FIG. 14). Then, similarly to the first embodiment of the present invention, after the setup bar 13 is attached to the setup hardware 10 (see FIGS. 2, 8 and 14), the main bar 11 is attached to the setup bar 13 by a binding wire (not shown) or the like. Temporarily fix (see FIGS. 2 and 8). Next, as shown in FIGS. 17 to 21, the pulley device 14 is attached to both ends of the abutment support A3, and a winch is installed on the ground GL. Also, as shown in FIG. 20, after the hoop streaks 12 factory-produced and wound on the reel 18 are straightened on the ground GL, the hoop streaks repositioning position P ₃ (see FIGS. 8 and 14). ), While feeding while correcting it into a coil having a predetermined radius of curvature corresponding to RC,
A bogie 25 that can travel around the structural pier A and a take-up platform 26 that winds the hoop bar 12 fed from the bogie 25 around the main bar 11 are installed. 17 to 19, the winding table 26 is omitted.

The bogie 25 includes a reel 18 rotatably disposed on a mount 25b having four wheels 25a, as shown in FIGS.
A pinch roll group 25c for straightening the hoop muscles 12 supplied from the pinch roll 8, and a hoop muscle arrangement position P for straightening the hoop muscles 12 straightened by the pinch roll group 25c.
A predetermined radius of curvature corresponding to ₃ (in the present embodiment, about 3 to
Straightening roll group 25d for straightening into a coil with 4m)
And The straightening roll group 25d
Each roll position is the same as in the first embodiment of the present invention.
Hoop rebar arrangement position P ₃ changed by RC structure pier A
Can be changed as needed. Further, as shown in FIG. 21, the wheels 25a are rotationally driven by a hydraulic motor 29 which is an example of a rotational drive source, and moreover, the bogie 25 and the peripheral surface of the RC structure pier A or the center thereof. In order to maintain the interval, the operation is automatically performed in accordance with the interval detected by an ultrasonic sensor (not shown), which is an example of a detecting unit provided on the side surface of the gantry 25b.

More specifically, at the lower four corners of the stand 25b,
Each of the disk-shaped swivel seats 27 is rotatably mounted by a bush or a bearing, and a pair of support members 28 is mounted on the lower surface of the swivel seat 27. A wheel 25a is rotatably mounted on the pair of support members 28. The wheels 25a are rotatably driven by a hydraulic motor 29 mounted on one of the support members 28. A large gear 3 is provided on the upper surface of the turning seat 27.
0, and the large gear 30 meshes with a small gear 33 at the tip of a shaft 32a of a hydraulic motor 32 which is an example of a rotary rotation drive source attached to the gantry 25b via a support member 31. It has become. Thereby, the control unit (not shown) outputs a signal to the hydraulic motor 32 in accordance with the interval detected by the ultrasonic sensor (not shown), so that the vehicle can travel around the pier A2 at a predetermined interval. ing. As shown in FIG. 20, the take-up table 26 has a plurality of guide rollers 26a which are formed in a two-part arc shape and which are rotatable around a vertical axis (not shown) with an appropriate pitch provided on the inner peripheral edge thereof. The pair of arc-shaped tables 26b is connected to each other by connecting means (not shown).

The straightening roll group 25 of the carriage 25
Each roll position of d, as in the first embodiment of the present invention, after adjusting in response to hoop reinforcement position P ₃ of the RC structure piers A, starts feed of the hoop 12. At this time, after feeding the hoop streaks 12 corrected to a predetermined radius of curvature by the bogie 25 to an appropriate length, the ends thereof are fixed to one guide roller 26a of the take-up stand 26 with a binding wire or a binding wire (not shown). (See FIG. 20). Thereafter, while the hoops 12 are being fed from the cart 25, the cart 25 is made to travel around the pier A2 according to the feed speed of the hoops 12. Then, similarly to the first embodiment of the present invention, after winding the hoop streak 12 on the winding table 26 by about 1.5 turns,
The hoop streaks 12 are tied in a state of being wrapped about the winding to form a reference circle. And then, the hoop 1
While feeding 2, the hoop streaks 12 are taken up on the take-up stand 26 (see FIG. 17). When the hoop streaks 12 for one coil have been wound on the take-up stand 26, the hoop streaks 12 vertically adjacent to each other are formed so that the next hoop streaks 12 can be processed in the same manner as in the first embodiment of the present invention. Spacer 2
2 is mounted on the take-up stand 26 (see FIG. 18).

Next, in the same manner as described above, when the hoop streaks 12 wound on the new reel 18 have been wound in a coil shape on the take-up stand 26, the hoop streaks 1 lifted upward.
2 is lowered to just above the newly wound hoop streak 12 and wrapped about 1.5 turns, and then the wrapped portion is bound with a binding wire or a binding number wire, and as shown in FIG. And pitching while lifting. Further, in the same manner as described above, when the hoop reinforcement 12 wound on the new reel 18 is wound in a coil shape on the take-up stand 26, the spiral hoop reinforcement 1 which has been lifted upwards is obtained.
2 is lowered to just above the newly wound coiled hoop streak 12 and wrapped for about 1.5 turns, and the wrapped portion is bound with a binding wire or a binding wire (FIG. 19).
reference). Then, without pitching, the bundle is once lifted up as a bundle. Then, after removing the cart 25 and the take-up stand 26, the hoop streaks 12, which are lifted upward, are lowered onto the footing foundation A1, as in the first embodiment of the present invention (see FIG. 6). While the pitch of the fixed bottom hoop streaks 12 is being set, it is lifted again to complete the arrangement of the spiral hoop streaks 12 over the entire height of the pier A2 (see FIG. 7).

Finally, the main bar 11 narrowed inward as described above is replaced with a predetermined main bar normal bar arrangement position P.
After moving it to ₁ (until it hits the hoop muscle 12),
1 and the hoop muscles 12 are bound and completed (FIGS. 8 and 14).
reference). Of course, as in the first embodiment of the present invention,
Without pitch out of the hoop 12, when the lift it once left bundle in parallel with the dismantling of such carriage 25 may be moved main reinforcements 11 to the main reinforcement normal reinforcement position P ₁ (Fig. 1
6). As described above, according to the reinforcing member arranging method of the RC structure according to the present embodiment, the same effects as those of the first embodiment of the present invention can be obtained. In addition, in the first embodiment of the present invention,
In order to wind the hoop streaks 12 around the annular base 21 in a coil shape, the upper end position of the guide roller 21b of the annular base 21 is
Although it was necessary to set the pinch roll group 20b of the hoop processing machine 20 and the setting position of the straightening roll group 20c to be lower, it was not necessary to take such troublesome measures.
Bar arrangement work can be performed easily.

(Third Embodiment) Subsequently, with reference to FIGS. 1, 2, 7, and 22 to 26, a reinforcing member of an RC structure according to a third embodiment of the present invention will be described. The method will be described. First, similarly to the first embodiment of the present invention, after digging around the lower part of the pier A2 buried in the soil (see FIG. 1), the setup hardware 10 is attached to a predetermined portion of the pier A2 (see FIG. 1). 8, see FIG. 14). Then, similarly to the first embodiment of the present invention, after the setup bar 13 is attached to the setup hardware 10 (see FIGS. 2, 8, and 14), the main bar 1 is attached to the setup bar 13.
1 is temporarily fixed by a binding wire (not shown) or the like (see FIGS. 2 and 8). Next, as shown in FIGS. 22 and 23, the above-described support base 19 and the hoop processing machine 20 are installed on the ground GL, and a plurality of pulley devices 14 are attached to the abutment support A3. A winch (not shown) is set on the GL. Then, it is pulled out from this winch and the pulley device 1
The hoop processing machine 20 is attached to the tip of the rope 23
The hoop muscle 12 corrected by the above is placed around the main muscle 11 at an appropriate pitch in the height direction (100 to 150 m in the present embodiment).
m), the annular suspension machine 34 to be wound is suspended.

As shown in FIGS. 22 to 25, the annular suspension machine 34 includes a guide rail 35 formed by connecting two to four-part arcuate H-shaped steel members by connecting means (not shown).
A chain conveyor provided with a chain 42 with hooks, which is an example of a hanger that suspends the hoop bars 12 fed from the hoop processing machine 20 at an appropriate pitch in the height direction while circling around the guide rails 35. 36. The chain conveyor 36 is shown in FIGS.
As shown in FIG. 5, the lower flange 3 of the guide rail 35
A hanger roller 37 that runs on 5a, a bracket 38 that rotatably supports the hanger roller 37, and that has a chain 42 with a hook suspended from a lower end thereof via a bracket 43; An example of a drive source including a chain 39 connected to the protruding end by welding or the like and wound around the guide rail 35, and a sprocket 40 mounted on the upper flange 35a of the guide rail 35 and meshing with the chain 39. And a certain electric motor 41. Accordingly, by driving the electric motor 41, the chain 39 orbits around the guide rail 35, and the bracket 38 connected to the chain 39 holds the hoop 12 on the hook 42a of the hooked chain 42. Thus, it is configured to be able to go around the guide rail 35.

The hook 4 of the chain 42 with hooks
It is assumed that the mounting position of 2a is set in advance in accordance with the pitch in the height direction of the hoop streaks 12 and the like. An eyebolt or the like is attached to the upper portion of the guide rail 35 to tie the tip of the rope 23 or to hook a hook (not shown) attached to the tip of the rope 23. Also,
Under the bracket 38, a bracket 4 having an L-shaped cross section is provided.
3 are connected by a pin 44, and a hooked chain 42 is hooked on a hook 45 attached to the lower end of the bracket 43. The inner radius of the bracket 38 is intended to be larger than the radius of curvature of the hoop reinforcement position P _3, thereby, was assumed to use a cross-sectional L-shaped bracket 43 as described above. Then, each roll position of the straightening rolls 20c hoop machine 20 (see FIG. 9), similar to the first embodiment of the present invention, in accordance with the hoop reinforcement position P ₃ of the RC structure piers A After the adjustment, the winding of the hoop muscle 12 is started. At this time, after feeding the hoop streaks 12 having been corrected to a predetermined radius of curvature by the hoop processing machine 20 to an appropriate length, the ends thereof are hooked to the hooks 42a of the chain 42 with one hook of the annular suspension machine 34.
Is fixed with a binding wire or a binding number wire (not shown).

Then, the hoop streaks 1 are output from the hoop processing machine 20.
2 while the chain 39 circulates around the guide rail 35 in accordance with the feed speed of the hoop streaks 12 and raises the annular suspension machine 34 upward at a predetermined speed. (See FIG. 22). When the hoop streaks 12 for one coil have been hooked on the hooks 42a of the chain 42 with hooks, the main streaks 11 and the hoop streaks 12 are pulled up while adjusting the setup hardware 10 by using a binding wire (not shown). It is fixed with a binding wire or the like (see FIG. 16). At this time, the hoop streaks 12 are fixed to the main streaks 11 while being removed from the hooks 42a of the chain 42 with hooks. Then, when the hoop streaks 12 have been fixed to the main streaks 11, the annular suspension machine 34 is lowered, and the hoop streaks 12 wound on the new reel 18 are straightened while the hooks of the chain 42 42a.
Then, when the hooking is completed, the main bar 11 and the hoop bar 12 are fixed with a tie wire or a tie number wire (not shown) while bringing the wire upward and adjusting the setup hardware 10 as described above. At this time, the hoop streaks 12 which have been previously bound to the main streaks 11
About 1.5 turns.

When the hoop streaks 12 have been fixed to the main streaks 11, the annular suspension machine 34 is lowered, and the chain 42 with hooks is replaced with another chain with hooks (not shown). The hook pitch of the chain with hooks is shorter than the pitch of the hooks 42a of the chain with hooks 42 (for example, 10 to 80 m).
m). Next, in the same manner as described above, the hoop streaks 12 wound on the new reel 18 are hooked on the hooks of the new hooked chain (see FIG. 23). Then, when the hooking is completed, it is taken upward as described above, and
After removing the hoop processing machine 20, the hoop streaks 12, which are lifted upward, are lowered onto the footing foundation A1. Next, the chain with the hook is connected to the chain 4 with the hook.
While exchanging with 2 for pitching,
Are arranged (see FIG. 26). At this time, pitching may be performed while attaching the spacer 22 to the hoop streak 12. Also in this case, the hoop muscle 12 fixed to the main muscle 11 is wrapped by about 1.5 turns. Finally, while adjusting the setup hardware 10, the main reinforcement 11
And the hoop streaks 12 are fixed with a binding wire or a binding number wire (not shown) to complete the process.

As described above, according to the reinforcing member arranging method for the RC structure according to the present embodiment, the same effects as those of the first embodiment of the present invention can be obtained, and the first and second embodiments of the present invention can be obtained. In this embodiment, the hoop 12 of the last reel 18 is connected to the peer A2.
The hoop streaks 12 could not be fixed to the main streaks 11 unless they were wound in a coil shape around the
After winding the hoop muscle 12 in a spiral shape, the hoop muscle 12 can be sequentially fixed to the main muscle 11, and the hoop muscle 12 is connected to the pier A2.
It is possible to prevent the worker from waiting while the work is wound around the work, and to prevent the work from being delayed.

The embodiment of the present invention has been described above.
The present invention is not limited to the above-described embodiment, and all changes in conditions that do not depart from the gist are within the scope of the present invention. For example, in the first to third embodiments of the present invention, three setup hardware 10 are attached to the area divided into four when the pier A2 is viewed in plan.
Although it depends on the size of 2, two or more setup hardware 10 may be attached to an area where the pier A2 is divided into two, three, or five or more in plan view. Further, in the first to third embodiments of the present invention, the arc-shaped setup streaks 13 having an approximately four-divided arc shape are used, but arc-shaped setup streaks having two, three, or five or more divisions can be used. is there. In the first and second embodiments of the present invention, a transparent or translucent spacer is used for the spacer 22 in order to make the description easy to understand, but it is needless to say that the spacer 22 may be opaque. It is also possible to use a short spacer having an S-shaped cross section, a spacer obtained by bending a steel bar or the like into an S shape, or a chain 42 with a hook.

In the first to third embodiments of the present invention, the pulley devices 1 are provided at both upper ends of the abutment support A3.
The pulley device 14 may be mounted below the abutment bearing portion A3 and surrounding the pier A2. In the first to third embodiments of the present invention, the existing RC
Although the case where the main reinforcement 11 and the hoop reinforcement 12 are arranged around the structural pier A has been described, the present invention can also be applied to a newly installed pier. In this case, after a predetermined "gap" is provided radially inward from the "main reinforcement normal reinforcement arrangement position" at the required position for constructing a new pier, the main reinforcement is temporarily fixed, and then the hoop reinforcement is spirally wound around the main reinforcement. Then, the main muscle may be moved to the "main muscle normal arrangement position" to bind the main muscle and the spiral hoop muscle. In the case of a high pier having a large cross-sectional area, the above operation may be repeated. In addition, the pulley device 14 may be suspended by a crane (not shown) or attached to a scaffold or turret (not shown) assembled around a main bar. Further, in the first and third embodiments of the present invention, the coil is wound around the reel 18 to have a substantially uniform diameter as a material, and after being straightened once, is formed into a coil having a predetermined radius of curvature. Although the hoop processing machine 20 for straightening is used, for example, a hoop processing machine for straightening the hoop streaks 12 into a coil shape having a predetermined radius of curvature may be used.

Further, in the second embodiment of the present invention, a coil wound around a reel 18 with a substantially uniform diameter is used as a material, and once straightened, formed into a coil having a predetermined radius of curvature. Although the cart 25 for straightening is used, for example, a cart for straightening the hoop muscle 12 into a coil shape having a predetermined radius of curvature may be used. Further, in the first to third embodiments of the present invention, when the hoop streaks 12 are finally wound up in a coil shape and then temporarily lifted up as a bundle, the annular platform 21, the winding platform 26, Support stand 19, hoop processing machine 2
0, the trolley 25 was removed, but among these equipment, the support base 19, the hoop processing machine 20, and the trolley 25 may be removed together when the pulley device 14 and the winch are finally removed. In the third embodiment of the present invention, the bracket 38 and the bracket 43 are connected by the pin 44, but may be connected by a bolt (not shown). Further, in the third embodiment of the present invention, the hooked chain 42 is removed from the hook 45 and replaced with another hooked chain.
It is also possible to remove 2 together with the bracket 43 from the bracket 38 and replace it with another chain with a hook.

In the third embodiment of the present invention, 1
After fixing the hoop muscle 12 for the coil to the main muscle 11, the annular suspension machine 34 was lowered, and the hoop muscle 12 for the next one coil was spirally wound. It is not necessary to fix to the main muscle 11, for example, after fixing several turns of the hoop muscle 12 to the main muscle 11,
The annular hanger 34 may be lowered, and the next hoop bar 12 may be spirally wound. Further, in the third embodiment of the present invention, an annular suspension machine 34 as shown in FIGS. 24 and 25 is used. However, for example, as shown in FIG. It is also possible to use an annular suspension device in which a hook 45a is attached and a chain 42 with a hook is attached to the hook 45a. In this case,
When the hoop muscles 12 for one coil have been hooked on the hooks 42a, they are taken upward, and are fixed to the main muscles 11 sequentially from the top, and then when the fixing of the upper several turns of the hoop muscles 12 is completed. Then, the annular suspension machine 34 is slightly lowered, the bracket 43 is removed from the bracket 38, and the operation of fixing the hoop bar 12 to the main bar 11 is continued.
4 is lowered, the separately prepared bracket 43 is attached, and the spiral winding operation of the new hoop streak 12 is started.

Thus, the waiting time for the work of attaching the hoop streaks 12 and the work of winding in a spiral shape is reduced. Also, since the hook 45a is connected at two points compared to the hook 45 by using the hook 45a, when the hoop 12 is hooked on the hook 42a of the hooked chain 42, the hoop 12 is attached with the hook. It is possible to prevent the entire chain 42 from being detached or the hook 45 from being detached, thereby improving safety. Further, the third aspect of the present invention
In the embodiment, the annular suspension machine 34 as shown in FIGS. 24 and 25 is used. However, for example, an annular suspension machine 46 as shown in FIG. 27 may be used. Note that the annular suspension machine 46 runs the chain 39 on the lower flange 35 a of the guide rail 47 except for the hanger roller 37 of the annular suspension machine 34. Further, an annular suspension machine 48 as shown in FIG. 28 may be used. In addition, the annular suspension machine 48 includes a guide rail 49 formed by connecting 2 to 4 divided arc-shaped C-shaped steel members by a connecting means (not shown), and the hoop processing machine 20 while rotating along the guide rail 49. A chain conveyor 50 having a hooked chain 42 for suspending the hoop bars 12 to be fed at an appropriate pitch in the height direction.

Further, the chain conveyor 50 includes a hanger roller 51 running on the guide rail 49,
The hanger roller 51 is rotatably supported, and the guide rail 49 is provided below the guide rail 49.
A bracket 53 connected to a chain 52 wound substantially the same diameter as the above, a bracket 58 attached below the bracket 53 with the chain 52 interposed, and a cross section connected to the bracket 58 via a pin 59 An L-shaped bracket 60, a chain 42 with a hook hooked on a hook 45 a connected to a lower end of the bracket 60, and mounted on a guide rail 49 and driven to rotate via a gear box 54. An electric motor 57 which is an example of a drive source provided with a sprocket 56 meshing with the chain 52 is provided at the tip of the shaft portion 55. Further, it is also possible to use an annular suspension machine 61 as shown in FIG. Note that the annular suspension machine 61 includes a guide rail 62 formed by connecting two to four-divided arcuate H-shaped steel members by connecting means (not shown), and a hoop processing machine 20 that circulates along the guide rail 62. A conveyor 63 provided with a chain 42 with hooks for suspending the hoop bars 12 to be fed at an appropriate pitch in the height direction. Moreover, this conveyor 63
The guide rail 62 has an L-shaped cross section that runs while being hooked on an outer flange 62a. The guide rail 62 further includes an anti-disengagement member 64 at the lower portion on the inside thereof, and is rotationally driven by a rotational drive source (not shown) above. It has a hanger roller 65.

[0043]

As is apparent from the above description, in the method for arranging RC structures according to the first to seventh aspects of the present invention, the length produced by winding the coil into a coil continuously in advance under various restrictions. A long hoop can be efficiently wound in a spiral shape at the construction site according to the pier, which reduces the quality anxiety caused by the variation in strength due to the large number of connection parts of the conventional hoop. Can be resolved,
It is possible to eliminate the need for skilled technicians who are required to connect the hoop streaks, and to improve the arrangement accuracy, workability, and workability. In particular, in the method for arranging RC structures according to the second and fifth aspects, it is not necessary to provide a bent portion in a long hoop muscle wound in a coil shape around the main muscle, and it is wound around the pier in a short time. be able to. According to the reinforcing member arranging method of the third aspect, a long hoop bar can be easily wound in a coil shape regardless of the cross-sectional shape of the pier. In the reinforcing member arranging method according to the sixth aspect, when the hoop muscle is wound around the main muscle in a coil shape and then wound up in a spiral shape, the inner diameter of the coil-shaped hoop muscle is reduced, and the inner diameter of the main hoop muscle is reduced. Bar arrangement work can be easily performed without fear of contact. In the reinforcing member arranging method according to the seventh aspect of the present invention, the interval between the vertically adjacent hoop bars can be made equal, and the strength of the RC structure constructed around the pier can be set to a desired strength. And improve safety and reliability.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an RC structure pier that can be suitably used in a method of arranging RC structures according to first to third embodiments of the present invention.

FIG. 2 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to first to third embodiments of the present invention.

FIG. 3 is an explanatory diagram of a method for arranging reinforcing bars of the RC structure according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram of a method of arranging the RC structure according to the first embodiment of the present invention.

FIG. 6 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to the first and second embodiments of the present invention.

FIG. 7 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to the first and second embodiments of the present invention.

FIG. 8 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to first to third embodiments of the present invention.

FIG. 9 is an explanatory diagram of a method of arranging the RC structure according to the first embodiment of the present invention.

FIG. 10 is an explanatory diagram of an annular base.

FIG. 11 is an explanatory view of a modification of the annular base.

FIG. 12 is an explanatory view of a modification of the annular base.

FIG. 13 is an explanatory diagram of a modification of the annular turntable.

FIG. 14A is a sectional view taken along line FF of FIG. 8;
(B) is a sectional view taken along the line GG in FIG. 8.

FIG. 15A is a side cross-sectional view of a setup hardware that can be suitably used in the method of arranging the RC structure according to the first to third embodiments of the present invention. (B) is the first to the present invention.
It is a front view of the setup hardware which can be used suitably for the reinforcement arrangement method of the RC structure which concerns on 3rd Embodiment.

FIG. 16 shows an RC according to first to third embodiments of the present invention.
It is explanatory drawing of the arrangement | positioning method of a structure.

FIG. 17 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to a second embodiment of the present invention.

FIG. 18 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to a second embodiment of the present invention.

FIG. 19 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to a second embodiment of the present invention.

FIG. 20 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to a second embodiment of the present invention.

FIG. 21 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to a second embodiment of the present invention.

FIG. 22 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to a third embodiment of the present invention.

FIG. 23 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to a third embodiment of the present invention.

FIG. 24 is an explanatory view of an annular suspension machine.

FIG. 25 is an explanatory view of an annular suspension machine.

FIG. 26 is an explanatory diagram of a method for arranging reinforcing bars of an RC structure according to a third embodiment of the present invention.

FIG. 27 is an explanatory view of a modification of the annular suspension machine.

FIG. 28 is an explanatory view of a modification of the annular suspension machine.

FIG. 29 is an explanatory view of a modification of the annular suspension machine.

[Explanation of symbols]

Shift A RC structure piers (piers) A1 footing foundation (column bottom) A2 peer (pillar abdomen) A3 abutment bearings (capital portion) GL ground P ₁ main reinforcements normal reinforcement position P ₂ position P ₃ hoop reinforcement position L ₁ Length S ₁ Clearance 10 Setup hardware 10a Slot 10b Flat plate portion 10c Setup stitch hook 11 Main bar 12 Hoop streak 13 Setup streak 14 Pulley device 15 Hexagon socket head cap screw 15a Male screw portion 16 Embedded nut 17 Joint 18 Reel 19 Support base 20 Hoop processing machine 20a gantry 20b pinch roll group 20c straightening roll group 21 annular base 21a roller 21b guide roller 21c arc-shaped table 21d support plate 21e support plate 21f geared motor (rotary drive source) 21g mounting table 21h buffer table 21j roller conveyor 22 spacer (Hanging equipment) 23 rope Reference Signs List 24 Pit 25 Cart 25a Wheel 25b Mount 25c Pinch roll group 25d Straightening roll group 26 Winding table 26a Guide roller 26b Arc-shaped table 27 Swivel seat 28 Support member 29 Hydraulic motor (rotary drive source) 30 Large gear 31 Support member 32 Hydraulic motor (Turning rotation drive source) 32a shaft 33 small gear 34 annular suspension machine 35 guide rail 35a flange 36 chain conveyor 37 hanger roller 38 bracket 39 chain 40 sprocket 41 electric motor (drive source) 42 chain with hook (hook) 42a hook 43 bracket 44 Pin 45 Hook 45a Hook 46 Annular suspension machine 47 Guide rail 48 Annular suspension machine 49 Guide rail 50 Chain conveyor 51 Hanger roller 52 Chain 53 Bracket 54 Gear Box 55 Shaft 56 Sprocket 57 Electric Motor (Drive Source) 58 Bracket 59 Pin 60 Bracket 61 Annular Suspension Machine 62 Guide Rail 62a Flange 63 Conveyor 64 Detachment Prevention Material 65 Hanger Roller 67 Annular Base 67a Roller 67b Guide Roller 67c Arc Table 67d Support plate 67e Support plate 67f Shaft 67g Gear box 67h Shaft 67j Buffer stand 67k Roller conveyor 68 Annular base 68a Roller 68b Guide roller 68c Arc-shaped table 68d Support plate 68e Support plate 68f Travel base

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI E04G 21/12 105 E04G 21/12 105A

Claims (7)

[Claims] 1. A method of arranging a RC structure to be constructed around a pier, wherein a hoop rebar in which a reinforcing bar is continuously wound in a coil shape is prepared in advance, and the hoop rebar is gradually unwound. A coil is wound around a plurality of main bars standing upright at an appropriate pitch around a pier, and then the hoop bars wound in the coil shape are spirally wound around the main bars. How to arrange the structure. 2. An annular platform having a roller conveyor surrounding the pier while correcting the hoop rebar in which the rebar is wound in a coil shape in a continuous manner in advance, into a coil shape having a predetermined radius of curvature. The method according to claim 1, wherein the reinforcing member is wound around the plurality of main reinforcements in a coil shape by feeding the rotation to an annular turntable that runs around the pier. 3. The hoop reinforces the hoop reinforced by winding the rebar continuously in a coil shape from a bogie that can run around the pier to a coil shape having a predetermined radius of curvature. The reinforcing bar arrangement method for an RC structure according to claim 1, wherein the bogie is wound around the bridge pier in a coil shape by feeding the bogie around the pier while feeding. 4. A method of arranging a RC structure to be constructed around a pier, wherein a hoop rebar in which a reinforcing bar is continuously wound in a coil shape is prepared in advance, and the hoop rebar is gradually unwound. R wound around a plurality of main reinforcements standing at an appropriate pitch around the pier.
Reinforcement method of C structure. 5. The chain conveyor according to claim 1, wherein the hoop reinforces the hoop rein in which the rebar is continuously wound in a coil shape, and the hoop reinforces the chain conveyor around the pier while correcting the hoop rein to a coil shape having a predetermined radius of curvature. The method according to claim 4, wherein the plurality of main reinforcements are spirally wound around the plurality of main reinforcements by feeding the plurality of main reinforcements. 6. The main bars are temporarily fixed with a predetermined gap radially inward from a predetermined main bar normal arrangement position, and then the hoops are wound around the respective main bars in a spiral shape. Thereafter, the respective main muscles are moved to the main muscle normal arrangement position to bind the respective main muscles and the spiral hoop muscle.
6. The method for arranging reinforcing bars for an RC structure according to any one of items 5 to 5. 7. The R-shaped spiral hoop according to claim 1, wherein hoops vertically adjacent to each other are supported by a hanger and maintained at a predetermined interval.
Reinforcement method of C structure.