JP6929158B2 - Concrete structure - Google Patents

Description

The present invention relates to a force distribution bar unit, a concrete structure formed by the force distribution bar unit, and a bar arrangement method using the force distribution bar unit.

Conventionally, concrete structures such as concrete walls and concrete floors have been reinforced by using reinforcing bars which are iron reinforcing bars. In such a concrete structure, a plurality of reinforcing bars are arranged so as to have different major axis directions so that the plurality of reinforcing bars intersect, and after the intersections are fixed, concrete is poured to form a concrete flat plate. NS.

On the other hand, in recent years, there has been a demand for more efficient reinforcement arrangement at construction sites of concrete structures, and a blind-shaped reinforcing bar unit in which a plurality of reinforcing bars are connected in a blind shape has been studied. For example, in Patent Document 1, a blind-shaped reinforcing bar unit in which a plurality of reinforcing bars are connected in a blind shape at intervals corresponding to the reinforcing bar arrangement intervals is installed in a state of being deployed at a construction site and is orthogonal to the reinforcing bars. A technique for putting tension in a strip by introducing tension into the strip is disclosed. According to this technique, it is possible to reduce the degree of fatigue of workers and improve work efficiency and safety by omitting or reducing binding work in rebar construction.

JP-A-2007-126854

However, the blind-shaped reinforcing bar unit of Patent Document 1 is provided with a plurality of heavy reinforcing bars, and there is a problem that workability at the time of bar arrangement is low.

The present invention has been made in view of the above, and an object of the present invention is to improve workability at the time of bar arrangement.

In order to solve the above-mentioned problems and achieve the object, one aspect of the present invention is to connect a plurality of force distribution bars made of fiber reinforced plastic and a plurality of flexibility to connect each of the plurality of force distribution bars. It is a force distribution bar unit that includes a connecting member of the above, and is characterized in that a bar arrangement interval is provided between each of the plurality of force distribution bars.

In the aspect of the above-mentioned force distribution muscle unit of the present invention, it is preferable that the force distribution bar has a solid structure.

In addition, in the aspect of the above-mentioned force distribution bar unit of the present invention, the force distribution bar may have a hollow structure.

In the embodiment of the above-mentioned force distribution bar unit of the present invention, the number of the plurality of force distribution bars is 3 or more, and the plurality of bar arrangement intervals provided between each of the plurality of force distribution bars are equalized. Is preferable.

In the aspect of the above-mentioned force distribution muscle unit of the present invention, it is preferable that a plurality of force distribution muscles are bundled so as to be disassembled.

Another aspect of the present invention includes a first force distribution muscle unit and a second force distribution muscle unit, which are the above-mentioned force distribution muscle units of the present invention, and is a force distribution muscle material of the first force distribution muscle unit. It is a concrete structure characterized in that and the force distribution bar material of the second force distribution bar unit intersect and are arranged on the wall.

Another aspect of the present invention includes a first force distribution muscle unit and a second force distribution muscle unit, which are the above-mentioned force distribution muscle units of the present invention, and is a force distribution muscle material of the first force distribution muscle unit. It is a concrete structure characterized in that the force distribution bar material of the second force distribution bar unit intersects as a slab bar.

Another aspect of the present invention is a concrete structure comprising the above-mentioned force distribution bar unit of the present invention, wherein the main bar is a reinforcing bar and the force distribution bar intersecting the main bar is the above-mentioned force distribution bar material. The body.

Another aspect of the present invention is a concrete structure characterized in that the above-mentioned force distribution bar unit of the present invention is a reinforcing bar of a synthetic deck slab.

Another aspect of the present invention is a concrete structure characterized in that the above-mentioned force distribution bar unit of the present invention is an upper end force distribution bar of a deck with truss bars.

In another aspect of the present invention, the above-mentioned force distribution bar unit of the present invention in which a plurality of force distribution bars are bundled so as to be able to be bundled is untied, and the force distribution bars are fixed orthogonal to the main bar. It is a bar arrangement method characterized by.

Another aspect of the present invention includes a step of transporting the above-mentioned force distribution muscle unit of the present invention in which a plurality of force distribution muscles are bundled so as to be able to be bundled, and a step of disassembling the force distribution muscle unit. It is a bar arrangement method including a step of spreading the force distribution bar unit in a plane and a step of fixing the flat force distribution bar unit to the main bar without adjusting the bar arrangement interval. ..

According to the present invention, there is an effect that workability at the time of bar arrangement can be improved.

FIG. 1 is a diagram showing a first configuration example of a force distribution muscle unit according to a first embodiment of the present invention. FIG. 2 (A) is a diagram showing the appearance of the force distribution bar material applicable to the force distribution muscle unit shown in FIG. 1, and FIG. 2 (B) is a view to which the force distribution muscle unit shown in FIG. 1 is applied. It is a schematic diagram which shows the example of the muscle structure. FIG. 3 is a schematic view showing an example of arrangement of the binding portion in the bar arrangement structure shown in FIG. 2 (B). FIG. 4 is a diagram showing an example of a cross section of the force distribution bar in IV-IV of FIG. FIG. 5 is a diagram showing a force distribution muscle unit that is bound and bundled. FIG. 6 is a diagram illustrating a first example of a reinforcing bar arrangement structure of a concrete structure according to a second embodiment of the present invention. FIG. 7 is a diagram illustrating a second example of the bar arrangement structure of the concrete structure according to the second embodiment of the present invention. FIG. 8 is a diagram illustrating a third example of a reinforcing bar arrangement structure of the concrete structure according to the second embodiment of the present invention. FIG. 9 is a diagram illustrating a fourth example of the bar arrangement structure of the concrete structure according to the second embodiment of the present invention. FIG. 10 is a diagram illustrating a fifth example of a reinforcing bar arrangement structure of a concrete structure according to a second embodiment of the present invention. 11 (A) is a perspective view illustrating a sixth example of the bar arrangement structure of the concrete structure according to the second embodiment of the present invention, and FIG. 11 (B) is shown in FIG. 11 (A). It is an enlarged view between the 1st concrete structural member and the 2nd concrete structural member. FIG. 12 is a diagram illustrating a seventh example of a reinforcing bar arrangement structure of a concrete structure according to a second embodiment of the present invention.

Hereinafter, the force distribution bar unit, the concrete structure, and the embodiment of the reinforcement method according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to the description of the following embodiments. Further, in the following description of the embodiment, the same configuration is designated by the same reference numeral, and different configurations are designated by different reference numerals.

In the following description, workability represents workability, and when workability is high, workability is easy, and when workability is low, workability is difficult. In work with low workability, the number of processes is large, or specialized knowledge or skill is required, so that the worker in charge of the work has a high degree of fatigue. Similarly, the transportability represents the ease of transport, and when the transportability is high, the transportability is easy, and when the transportability is low, the transportability is difficult. Specifically, when the member to be transported is heavy or the shape of the member to be transported is difficult to transport, it can be said that the transportability is low. Further, the assembling property represents the ease of assembling, and when the assembling property is high, it is easy to assemble, and when the assembling property is low, it is difficult to assemble.

<Embodiment 1>
FIG. 1 is a diagram showing a first configuration example of a force distribution muscle unit according to a first embodiment of the present invention. The force distribution bar unit 10 shown in FIG. 1 includes a plurality of force distribution bar members 11 and a plurality of connecting members 12. A bar arrangement interval L is provided between each of the plurality of force distribution bar members 11.

The force distribution bar 11 is a rod made of fiber-reinforced plastics (FRP), and is a member for reinforcing a concrete structure. Here, the FRP used for the force distribution bar 11 is not limited to a specific material as long as it has mechanical strength, heat resistance, corrosion resistance, etc. as the force distribution bar of the concrete structure. No. The FRP used for the force distribution bar 11 is glass fiber reinforced plastic (GFRP: Glass FRP), carbon fiber reinforced plastic (CFRP: Carbon FRP), boron fiber reinforced plastic (BFRP: Boron FRP), and aramid fiber reinforced plastic (BFRP: Boron FRP). AFRP: Aramid FRP) and polyethylene fiber reinforced plastic can be exemplified.

FIG. 2A is a diagram showing the appearance of the force distribution bar 11 applicable to the force distribution muscle unit 10 shown in FIG. 1, and FIG. 2B is a diagram showing the force distribution muscle unit 10 shown in FIG. It is a schematic diagram which shows the example of the applied bar arrangement structure. FIG. 2B shows a force distribution bar unit 10 including a plurality of force distribution bars 11 and a plurality of connecting members 12 shown in FIG. 1, and the plurality of force distribution bars 11 are main bars. It is arranged so as to be substantially orthogonal to 20.

Here, as shown in FIG. 2A, it is preferable that the surface of the force distribution bar 11 is provided with irregularities by knots or ribs. Common concrete structures can crack due to drying or shrinkage. For example, on the surface of the concrete structure, as shown in FIG. 2B, when cracks occur in the direction intersecting the force distribution bar, the stress indicated by the arrow is generated in the direction in which the force distribution bar 11 extends. This stress increases the width of the crack. Therefore, as shown in FIG. 2A, if the surface of the force distribution bar 11 is provided with irregularities, it is possible to suppress the expansion of the width of the cracks.

The connecting member 12 is a flexible member that connects each of the plurality of force distribution bars 11. The connecting material 12 is limited to a specific form as long as it has mechanical strength, heat resistance, corrosion resistance, etc. that can be transported to the construction site and installed at the construction site without breaking. It's not a thing. As the connecting member 12, a string body, that is, a string-shaped object can be exemplified. Examples of the material of this string-shaped object include polypropylene, nylon, cotton, linen, silk and rubber. Alternatively, the connecting member 12 may be a wire. The connecting member 12 is fixed to each of the plurality of force distribution bars 11 so that the reinforcement spacing L is provided between the force distribution bars 11 adjacent to each other. Here, the method of fixing the force distribution bar 11 and the connecting member 12 is not limited to a specific one. The fixing of the force distribution bar 11 and the connecting member 12 may be performed by connecting the connecting member 12 to the force distribution bar 11, or may be performed by an adhesive.

By the way, the force distribution bar 11 is used as a substitute for the reinforcing bar forming the conventional concrete structure. Since the reinforcing bar, which is a conventional force distribution bar, is heavy, there is a problem that the transportability is low. In addition, there is also a problem that it is necessary to arrange heavy reinforcing bars at accurate positions at the time of conventional reinforcing bars, which imposes a heavy burden on workers. Further, even in the work of fixing the main reinforcing bar and the force distribution bar at the intersection by making the major axis directions of the plurality of heavy reinforcing bars different, there is a problem that the burden on the worker is heavy because the members to be handled are heavy. As described above, when the reinforcing bar is used as the force distribution bar, there is a problem that the workability at the time of bar arrangement is low.

On the other hand, a wire mesh called a welded wire mesh or a reinforcing bar lattice may be used to reinforce the concrete structure. The wire mesh is a wire mesh in which iron wires are arranged orthogonally and the intersections of the orthogonal iron wires are welded into a grid pattern. When a wire mesh is used to reinforce a concrete structure, there is a problem that the number of steps increases due to the welding process. Further, the wire mesh produced through the welding process is flat and has a problem of low transportability.

Therefore, if the force distribution bar 11 provided in the force distribution bar unit 10 is made of light FRP as in the present embodiment, the weight per force distribution bar can be reduced, and the force distribution bar unit 10 can be reduced. Can be lightened. Further, if the force distribution bar 11 is made of high-strength FRP, the diameter of the force distribution bar 11 can be reduced. By thinning the force distribution muscle material 11, the transportability of the bundled force distribution muscle unit 10 can be improved as described later. Therefore, the force distribution bar unit 10 can be easily transported to the construction site, and the force distribution bar unit 10 can be easily installed at the construction site. In this way, the workability of the force distribution muscle unit 10 at the time of reinforcement arrangement can be improved.

As described above, in the force distribution bar unit 10, the bar arrangement interval L is set based on the structural design, and a plurality of force distribution bars 11 are connected by the connecting member 12. Therefore, when the force distribution bar unit 10 is installed, the bar arrangement interval L is secured between the plurality of force distribution bar members 11, so that the reinforcement arrangement is performed without using specialized knowledge and skill in the reinforcement arrangement. Is possible.

FIG. 3 is a schematic view showing an arrangement example of the binding portion 13 in the bar arrangement structure shown in FIG. 2 (B). Conventionally, each of the intersections of the main bar and the force distribution bar is generally bound in principle, but in the present embodiment, a plurality of force distribution bar members 11 of the force distribution muscle unit 10 are plurality. Since they are connected by the connecting member 12, as shown in FIG. 3, the number of the binding portions 13 that bind the main bar 20 and the force distribution bar 11 is remarkably reduced, and the workability can be improved. ..

The force distribution bar units 10 can equalize the spacing between the force distribution bar members 11 adjacent to each other. Therefore, in the force distribution bar unit 10, when the number of force distribution bars 11 is 3 or more, the reinforcement spacing L provided between the force distribution bars 11 adjacent to each other can be accurately adjusted. .. However, the force distribution muscle unit of the present invention is not limited to the form in which the intervals between the force distribution muscles adjacent to each other are equalized.

The force distribution bar 11 may have a solid structure or a hollow structure. FIG. 4 is a diagram showing a cross-sectional example of the force distribution bar 11 in IV-IV of FIG. FIG. 4 shows a force distribution bar 11 having a hollow structure. In FIG. 4, the force distribution bar 11 has a hollow structure in which the space 111 is surrounded by the side portions 110. The space 111 is formed inside the force distribution bar 11 along the direction in which the force distribution bar 11 extends. When the force distribution bar 11 has a hollow structure, the bending strength is improved as compared with the case where the force distribution bar 11 has a solid structure with the same weight. Further, when the force distribution bar 11 has a hollow structure, it can be made lighter than when it has a solid structure with the same bending strength, and the transportability is improved.

FIG. 5 is a diagram showing a force distribution muscle unit 10 that is bound and bundled. As shown in FIG. 5, when a plurality of force distribution muscles 11 of the force distribution muscle unit 10 are bundled into a bundle, the force distribution muscle unit 10 can be transported in a bundle shape, and the transportability is dramatically improved. To improve. Here, a binding material (not shown) may be used for binding. Here, as the binding material, a string body, that is, a string-shaped object can be exemplified as in the case of the connecting member 12. Examples of the material of the string-shaped object include polypropylene, nylon, cotton, linen, silk, and rubber.

The force distribution bar unit 10 bundled as described above is transported to the construction site and unbundled. That is, the binding material is unwound at the construction site. Then, the disassembled force distribution muscle unit 10 is spread out in a plane shape, and the force distribution muscle member 11 is fixed so as to be orthogonal to the main reinforcement. According to the bar arrangement method using the bundled force distribution bar unit in this way, the bundled force distribution bar unit can be untied, unfolded, and fixed at the construction site to arrange the reinforcement. Therefore, workability, specifically, assembling ability can be improved. Since the bar arrangement interval L is secured between the plurality of force distribution bars 11, a worker who does not have the bar arrangement expertise and skill without using the bar arrangement expertise and skill. Even so, it becomes possible to arrange reinforcement.

As described above, according to the force distribution muscle unit according to the present embodiment, workability at the time of reinforcement arrangement can be improved.

<Embodiment 2>
In the first embodiment, the force distribution bar unit and the bar arrangement method have been described, but the present invention is not limited thereto. A concrete structure to which the force distribution bar unit is applied is also an aspect of the present invention. In the present embodiment, the concrete structure to which the force distribution bar unit described in the first embodiment is applied will be described. In the following description, the same components as those in the first embodiment are designated by the same reference numerals.

FIG. 6 is a diagram illustrating a first example of a reinforcing bar arrangement structure of a concrete structure according to a second embodiment of the present invention. FIG. 6A shows a state when the force distribution muscle units 10 and 10a are installed, and FIG. 6B shows a state when the force distribution muscle units 10 and 10a are installed. The force distribution muscle units 10 and 10a shown in FIGS. 6 (A) and 6 (B) are the same as the force distribution muscle unit 10 shown in FIG. The force distribution bar unit 10, which is the first force distribution bar unit, includes a plurality of FRP force distribution bars 11 and a plurality of flexible connecting members 12 for connecting each of the plurality of force distribution bars 11. A bar arrangement interval L is provided between each of the plurality of force distribution bar members 11. Further, the force distribution bar unit 10a, which is the second force distribution bar unit, is a flexible plurality of connecting members that connect each of the plurality of FRP force distribution bars 11a and the plurality of force distribution bars 11a. It is provided with 12a, and an equal bar arrangement interval La is provided between each of the plurality of force distribution bar members 11a.

As shown in FIGS. 6A and 6B, the force distribution bar unit 10 and the force distribution muscle unit 10a are arranged so that the force distribution bar 11 and the force distribution bar 11a intersect with each other. A bar arrangement structure is formed by fixing at these intersections, and a slab muscle is formed by the bar arrangement structure. Then, concrete is cast on the slab streaks to form a concrete slab.

Alternatively, the concrete wall is formed by arranging the reinforcing bar arrangement structures shown in FIGS. 6 (A) and 6 (B) perpendicularly to the installation surface and placing concrete.

Although FIGS. 6A and 6B show a state in which the force distribution muscle unit 10 is stacked on the force distribution muscle unit 10a, the force distribution muscle unit 10a is shown on the force distribution muscle unit 10. May be piled up.

FIG. 7 is a diagram illustrating a second example of the bar arrangement structure of the concrete structure according to the second embodiment of the present invention. FIG. 7A shows a state when the force distribution muscle unit 10 is installed, and FIG. 7B shows a state when the installation of the force distribution muscle unit 10 is completed. The force distribution muscle unit 10 shown in FIG. 7 is the same as the force distribution muscle unit 10 shown in FIG. As shown in FIG. 7, the main reinforcing bar is formed by the reinforcing bar 21, the force distribution bar unit 10 is arranged so that the reinforcing bar 21 and the force distribution bar material 11 intersect, and the force distribution bar unit 10 is fixed at these intersections to form a reinforcement structure. Form. Then, concrete is poured into the bar arrangement structure to form a concrete structure.

Although FIGS. 7 (A) and 7 (B) show a state in which the force distribution bar unit 10 is stacked on the reinforcing bar 21, the reinforcing bar 21 may be stacked on the force distribution bar unit 10.

FIG. 8 is a diagram illustrating a third example of a reinforcing bar arrangement structure of the concrete structure according to the second embodiment of the present invention. FIG. 8 shows a cross-sectional view of the concrete structure 100 formed by the force distribution bar unit 10 and the force distribution bar unit 10b. It should be noted that this cross-sectional view is a view which shows the cross section in the direction parallel to the reinforcing bar 21 on the main surface of a concrete structure 100. The force distribution muscle unit 10b shown in FIG. 8 is the same as the force distribution muscle unit 10 shown in FIG. The force distribution bar unit 10b, which is the first force distribution bar unit, comprises a plurality of FRP force distribution bars 11b and a plurality of flexible connecting members for connecting each of the plurality of force distribution bars 11b. In addition, equal bar arrangement intervals are provided between each of the plurality of force distribution bar members 11b. The bar arrangement structure shown in FIG. 8 has two bar arrangement structures shown in FIG. 7. Specifically, a first reinforcing bar structure in which the reinforcing bars 21 are arranged on the outside and the force distribution bar unit 10 is arranged on the inside, and a second reinforcement structure in which the reinforcing bars 21b are arranged on the outside and the force distribution bar unit 10b is arranged on the inside. It is realized by the reinforcement structure of. The reinforcing bar 21b is the same as the reinforcing bar 21. Then, the concrete 30 is cast into the bar arrangement structure shown in FIG. 8 to form the concrete structure 100.

In FIG. 8, the force distribution bar unit 10 is arranged inside the reinforcing bar 21, and the force distribution bar unit 10b is arranged inside the reinforcing bar 21b, but the present invention is not limited to this. The force distribution bar unit 10 may be arranged on the outside of the reinforcing bar 21, and the force distribution bar unit 10b may be arranged on the outside of the reinforcing bar 21b.

FIG. 9 is a diagram illustrating a fourth example of the bar arrangement structure of the concrete structure according to the second embodiment of the present invention. FIG. 9 shows a cross-sectional view of a concrete structure 200 formed by the force distribution bar unit 10 and the force distribution bar unit 10a. In addition, this cross-sectional view is a figure which shows the cross section in the direction parallel with the force distribution bar material 11 of a force distribution bar unit 10 on the main surface of a concrete structure 200. FIG. 9 shows a concrete structure 200 which is a synthetic deck slab formed of a synthetic deck 40 and a concrete 30. The reinforcing bar arrangement structure shown in FIG. 6 is provided at the upper end of the synthetic deck slab shown in FIG. The force distribution bar 11 of the force distribution bar unit 10 and the force distribution bar 11a of the force distribution muscle unit 10a form reinforcing bars of the synthetic deck slab.

FIG. 10 is a diagram illustrating a fifth example of a reinforcing bar arrangement structure of a concrete structure according to a second embodiment of the present invention. FIG. 10 shows a cross-sectional view of a concrete structure 300 formed by the force distribution bar unit 10 and the upper end reinforcing bar 50. In addition, this cross-sectional view is a figure which shows the cross section in the direction parallel with the force distribution bar material 11 of a force distribution bar unit 10 on the main surface of a concrete structure 300. FIG. 10 shows a concrete structure 300, which is a synthetic deck slab formed of a synthetic deck 40 and a concrete 30. The upper end of the synthetic deck slab shown in FIG. 10 is provided so that the force distribution bar 11 of the force distribution bar unit 10 and the upper end reinforcing bar 50 intersect. The force distribution bar 11 and the upper end reinforcing bar 50 of the force distribution bar unit 10 form a reinforcing bar of the synthetic deck slab.

11 (A) is a perspective view illustrating a sixth example of the bar arrangement structure of the concrete structure according to the second embodiment of the present invention, and FIG. 11 (B) is shown in FIG. 11 (A). It is a top view between the first concrete structural member 401 and the second concrete structural member 402. The first concrete structural member 401 and the second concrete structural member 402 are made of precast concrete.

FIG. 11A shows a perspective view of the reinforcing bar arrangement structure of the concrete structure 400 having the first concrete structural member 401 and the second concrete structural member 402. The first concrete structural member 401 is reinforced by the main bar 20c and the force distribution bar 11c of the force distribution bar unit 10c, and the second concrete structural member 402 is the force distribution bar of the main bar 20d and the force distribution bar unit 10d. It is reinforced with 11d. The force distribution muscle unit 10c and the force distribution muscle unit 10d are the same as the force distribution muscle unit 10, and in the force distribution muscle unit 10c, the force distribution muscle material 11c is connected by the connecting member 12c, and the force distribution muscle is connected. In the unit 10d, the force distribution bar 11d is connected by the connecting member 12d. Then, a joint portion 403 is provided between the first concrete structural member 401 and the second concrete structural member 402. The joint portion 403 is made of cast-in-place concrete. In the joint portion 403, an end portion of the force distribution bar 11c of the force distribution bar unit 10c that reinforces the first concrete structural member 401 and a force distribution bar unit 10d that reinforces the second concrete structural member 402 are arranged. The end of the force reinforcement 11d is arranged.

FIG. 12 is a diagram illustrating a seventh example of a reinforcing bar arrangement structure of a concrete structure according to a second embodiment of the present invention. FIG. 12 shows a cross-sectional view of a concrete structure 500 formed by a force distribution bar unit 10, an upper end reinforcing bar 50a, a lower end reinforcing bar 60, and a formwork deck 70. It should be noted that this cross-sectional view is a view which shows the cross section in the direction parallel to the upper end reinforcing bar 50a of the force distribution bar unit 10 on the main surface of a concrete structure 500. FIG. 12 shows a concrete structure 500 in which the upper end reinforcing bars of the deck with truss reinforcements formed by the upper end reinforcing bars 50a, the lower end reinforcing bars 60, and the formwork deck 70 are formed by the force distribution bar unit 10. There is. At the upper end of the deck with truss bars shown in FIG. 12, the force distribution bars 11 of the force distribution bar unit 10 and the upper end reinforcing bars 50a are provided so as to intersect with each other.

The concrete structure according to the present embodiment described above is an example, and the concrete structure to which the force distribution bar unit according to the first embodiment can be applied is not limited to these.

Each configuration described in each of the first and second embodiments may be combined with other configurations in each embodiment as long as the gist of the invention is not deviated. Moreover, each of these configurations may be combined with configurations in other embodiments different from each embodiment as long as the gist of the invention is not deviated. In addition, various modifications may be made without departing from the spirit of the invention.

10, 10a, 10b, 10c, 10d Strength distribution bar unit 11, 11a, 11b, 11c, 11d Power distribution bar 110 Side part 111 Space 12, 12a, 12c, 12d Connecting material 13 Binding part 20, 20c, 20d Main bar 21 , 21b Reinforcing bar 30 Concrete 40 Synthetic deck 50, 50a Upper end reinforcing bar 60 Lower end reinforcing bar 70 Formwork deck 100, 200, 300, 400, 500 Concrete structure 401 First concrete structural member 402 Second concrete structural member 403 Joint

Claims (5)

With the main line
Force distribution muscle unit and
The first concrete structural member and the second concrete structural member,
A joint portion, which is a cast-in-place concrete structure, is arranged between the first concrete structural member and the second concrete structural member.
With
The main bar is a reinforcing bar
The force distribution bar unit includes a plurality of force distribution bars made of fiber reinforced plastic that intersect with the main bar.
It is provided with a plurality of flexible connecting members for connecting each of the plurality of force distribution bars.
A bar arrangement interval is provided between each of the plurality of force distribution bars.
The surface of the force distribution bar is provided with irregularities.
The first concrete structural member and the second concrete structural member each include the main bar and the force distribution bar unit, and the main bar and the force distribution bar are projected onto different surfaces of the concrete structural member. ,
The joint portion includes an end portion of the force distribution bar of the force distribution bar unit of the first concrete structural member, at least one connecting member, and the force distribution of the second concrete structural member. The end of the force distribution bar of the muscle unit and at least one of the connecting members are arranged .
A concrete structure characterized in that the force distribution bar is arranged at an interface between the joint portion and the concrete structure. The concrete structure according to claim 1, wherein the first concrete structural member and the second concrete structural member are made of precast concrete. The concrete structure according to claim 1 or 2, wherein the force distribution bar has a solid structure. The concrete structure according to claim 1 or 2, wherein the force distribution bar has a hollow structure. The number of the plurality of force distribution bars is 3 or more,
The concrete structure according to any one of claims 1 to 4, wherein the plurality of reinforcement intervals provided between the plurality of force distribution bars are equal.

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