JPH0762793A - Through hole reinforcing metallic material for concrete structure - Google Patents

Abstract

PURPOSE:To shorten the construction period by forming a sleeve made of erosionproof metal and a reinforcement stem which is previously arranged on the outside of the sleeve and is joined with the inside of a structure body and reinforces the periphery of a through hole, into a unit form. CONSTITUTION:A sleeve 6 which is made of erosionproof material and has a hollow cylindrical body shape having a through hole 4 is formed by using a stainless steel material. On the outer peripheral surface of the sleeve 6, a plurality of rod stems 10 are arranged in a radial form toward the outside in the radial direction of the sleeve 6, and fixed. Further, an annular stem 12 is arranged in a double form in a concentric circular form along the circumferential direction of the sleeve 6 between the rod stems 10, and the rod stems 10 are connected. A reinforcing stem 8 is formed by connecting the rod stem 10 and the annular stem 12 by a lateral stem 12, and the reinforcing metalware 2 for through hole is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a through hole reinforcing metal article for a concrete structure suitable for being applied to a through hole formed in a beam of a building having a reinforced concrete structure or a steel frame concrete structure.

[0002]

2. Description of the Related Art Conventionally, indoor equipment pipes for air conditioning, electric equipment, etc. are arranged inside a building. In order to arrange these pipes efficiently, it is necessary to provide through holes in each part of the concrete structure and arrange the pipes there. In order to form this through hole, before placing concrete, decide the place where the through hole should be provided by using the gap such as bar arrangement, and place the void made of cardboard in advance, After pouring the concrete, the through holes were formed by removing the voids after the concrete hardened. Furthermore, since the through-holes are weak in terms of structural strength without any reinforcement, it is necessary to intensively reinforce this area. By arranging the reinforcing bars, the periphery of the through hole was reinforced.

[0003]

As described above, in order to form the through holes in the concrete structure, the voids made of the cardboard or the like are arranged and fixed at the time of bar arrangement, and after the concrete is hardened, the arrangement is performed. Since the voids must be removed and removed, not only the removal work is required, but also the construction period becomes longer. Further, the voids that have been used and are no longer needed cause a problem of becoming industrial waste.

The present invention has been made in view of the above circumstances, and an object thereof is to ensure the strength comparable to the conventional one and to penetrate the inside of a concrete structure without using a void which becomes an industrial waste. An object of the present invention is to provide a through-hole reinforcing metal article for a concrete structure, which can form a hole, and at the same time the through-hole can be constructed at the same time as the reinforcing bar is arranged, thereby shortening the construction period.

[0005]

In order to achieve the above object, a corrosion-resistant metal sleeve disposed inside a reinforced concrete structure to form a through hole therein,
Reinforcing bars that are pre-arranged on the outside of the sleeve and that are joined to the reinforcing bars inside the structure to reinforce the periphery of the through hole are unitized.

Further, the reinforcing bar is laid on the outer peripheral surface of the sleeve in a radial direction outwardly of the outer peripheral surface of the sleeve and between the rod bars along the circumferential direction of the sleeve. It is characterized by comprising a circular muscle.

Further, the through hole reinforcing metal of the concrete structure, wherein the corrosion resistant metal sleeve is replaced by F
It is characterized in that the sleeve is made of RP, a metal tube is covered on the outer circumference of the FRP sleeve, and the reinforcing bar is arranged in advance in the metal tube.

[0008] Further, it is a metal object that is attached to a pipe body connected to an opening formed in a steel frame material in order to form a through hole inside the steel frame concrete structure, and is attached so as to cover the outer periphery of the pipe body. The corrosion-resistant sleeve and the reinforcing bar that is pre-arranged on the outside of the sleeve and is joined to the bar inside the structure to reinforce the periphery of the through-hole are unitized.

[0009]

The operation of the present invention will be described. The through hole reinforcing metal of the concrete structure is composed of a corrosion resistant metal sleeve and a reinforcing bar arranged on the outside of the sleeve. Since this corrosion-resistant metal sleeve forms a through hole inside the structure, it exerts considerable strength and improves durability, and even when it becomes the outer surface of the structure and comes into contact with air,
It is not corroded by the water contained in the air or concrete. In addition, since reinforcing bars are arranged in advance on the outer side of the corrosion-resistant metal sleeve, the reinforcing metal piece is unitized, and it is easy to engage with surrounding bars. Further, the reinforcing bar of the reinforcing metal is joined to the reinforcing bar inside the reinforced concrete structure to reinforce the periphery of the through hole, so that the sleeve forming the through hole is sufficiently integrated with the concrete to be cast. The area around the through hole is sufficiently reinforced. Then, by performing the above work, the reinforcement of the reinforced concrete structure itself and the construction of the through holes formed therein are completed.

Further, the reinforcing bar is composed of a rod bar and an annular bar, the rod bar is radially arranged on the outer peripheral surface of the sleeve radially outwardly, and the annular bar runs along the circumferential direction between the rod bars. Since the reinforcing bars are laid out in a mesh shape by being stretched over, the adhesion between the reinforcing bars and concrete becomes good.

Further, even if the sleeve of the through-hole reinforcing metal material is made of FRP instead of corrosion-resistant metal, the through-hole itself is formed in the same manner as described above, exerting considerable strength and improving durability, and moisture. It is not corroded by.
Further, by covering the outer circumference of the FRP sleeve with the metal tube, the reinforcing bar can be further arranged on the outer circumference of the metal tube by means of welding or the like as described above.

Also in a steel concrete structure, a similar effect can be obtained by mounting the above-mentioned through-hole reinforcing metal to the pipe connected to the opening formed in the steel frame inside. it can.

[0013]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a preferred embodiment of a through hole reinforcing metal article for a concrete structure according to the present invention.
The through-hole reinforcing metal member 2 is preliminarily arranged on the outside of the corrosion-resistant metal sleeve 6 and the corrosion-resistant metal sleeve 6 arranged inside the structure to form the through-hole 4 inside the reinforced concrete structure. The reinforcing bars 8 joined to the reinforcing bars inside the structure to reinforce the surroundings of the through holes 4 are unitized.

The corrosion-resistant metal sleeve 6 is made of, for example, stainless steel, has a hollow cylindrical shape and has a circular vertical cross section, and its length corresponds to the length of the through hole formed inside the concrete structure. This vertical section does not necessarily have to be circular, and may be polygonal such as triangular, quadrangular, and pentagonal.
Further, both end surfaces of this sleeve do not have to be cut surfaces perpendicular to the central axis thereof, but may be cut obliquely or have irregularities. Furthermore, the appearance of the sleeve 6 may be cylindrical, curved, or bent in some cases. This is because the central axis of the through hole 4 is not always perpendicular to the outer surface of the concrete structure, and can be freely arranged inside the structure. Further, since the sleeve 6 is made of stainless steel, it does not oxidize and rust due to moisture, and therefore has a great durability against corrosion.

The reinforcing bars 8 are rod bars 10 radially arranged radially outward on the outer peripheral surface of the corrosion-resistant metal sleeve 6, and the corrosion-resistant metal sleeve 6 between the rod bars 10.
It is composed of an annular muscle 12 which is hung along the circumferential direction, and a lateral muscle 14 which connects and connects the rod muscle 10 and the annular muscle 12 arranged in three layers. The rod bars 10 are rod-shaped, one end of which is connected and fixed to the outer peripheral surface of the corrosion-resistant metal sleeve 6 perpendicularly thereto, and eight radial lines are arranged every 45 degrees over the entire circumference. The ring-shaped muscles 12 are concentrically doubly arranged around the center axis of the corrosion-resistant metal sleeve 6, and connect all of the eight connected and fixed rod muscles 10. Then, instead of the annular reinforcement 12, a rod-shaped reinforcing bar or the like may be arranged between the rod reinforcements 10.
Further, the mesh-shaped reinforcing bar 8 constituted by the rod bar 10 and the annular bar 12 is a corrosion-resistant metal sleeve 6
Are arranged side by side in three layers along the axial direction, and transverse lines 14 are arranged to connect them. As a result, the reinforcing bar 8
Becomes a basket shape, and the adhesion to the concrete to be placed is improved.

Therefore, since the corrosion-resistant metal sleeve 6 forms the through hole 4 inside the structure, the through hole 4 exhibits considerable strength and durability, and the outer surface of the structure is improved. Even if it comes into contact with air, it will not be corroded by the moisture contained in the air or concrete. Further, since the reinforcing bar 8 is arranged in advance on the outer side of the corrosion-resistant metal sleeve 6 by welding or the like, the through hole reinforcing metal piece 2 is made into a unit, which facilitates the connection with the surrounding bar arrangement. Concrete in which a corrosion-resistant metal sleeve 6 forming the through hole 4 is placed by joining the reinforcing bar 8 of the through hole reinforcing metal 2 with the reinforcing bar inside the reinforced concrete structure to reinforce the periphery of the through hole 4. And the periphery of the through hole 4 is sufficiently reinforced.
Then, by performing the above work, the reinforcement of the reinforced concrete structure itself and the construction of the through holes 4 formed therein are completed. The reinforcing bar 8 includes a rod bar 10 and an annular bar 12, the rod bar 10 is radially arranged on the outer peripheral surface of the corrosion-resistant metal sleeve 6 radially outward, and the annular bar 12 is between the rod bars 10. The reinforcement bars 8 are arranged in a mesh-like manner by being laid around in the circumferential direction.
Furthermore, by connecting and fixing the transverse muscles 14 between the rod muscles 10 and the annular muscles 12, the cage muscles are arranged,
Bar arrangement workability is greatly improved.

From the above, the reinforcement of the reinforced concrete structure itself and the construction of the through holes 4 formed therein are performed at the same time, and by completing these, the construction period can be shortened. Further, since the voids made of cardboard that have been conventionally used are not required to form the through holes 4, the work of removing the voids required after the concrete is set and hardened, and the industrial waste that has been removed. There is no need to dispose of the void.

FIG. 2 is a front view showing a preferred embodiment of a through hole reinforcing metal article for a concrete structure according to claim 3 of the present invention. In the through hole reinforcing metal member 2, a FRP sleeve 18 is used instead of the corrosion-resistant metal sleeve 6 of FIG. 1, and a metal pipe 16 is covered on the outer periphery of the FRP sleeve 18, and the metal pipe 16 has a reinforcing bar Is arranged in advance. FR
Since the P sleeve 18 is not corroded by moisture, it has very good durability. The metal tube 16 is F
It is fitted to the outside of the RP sleeve 18. Also metal tube 1
Since 6 is made of metal, the reinforcing bar 8 can be connected and fixed by welding or the like, and a hole is bored to form a female screw in the hole and a male screw is formed in the reinforcing bar 8 for screw connection. Is also good.

Therefore, even if the sleeve of the through-hole reinforcing metal 2 is made of FRP instead of the corrosion-resistant metal shown in FIG. 1, the through-hole 4 itself is formed in the same manner as described above, exerting considerable strength and improving durability. In addition, it is not corroded by moisture. Further, by covering the outer circumference of the FRP sleeve 18 with the metal pipe 16, the metal pipe 1
Reinforcing bars 8 can be arranged around the outer circumference of 6 by means of welding or the like as described above. Then, the formed through-holes 4 exhibit considerable strength and durability, and are not corroded by moisture. in addition,
The reinforcing bar 8 can be arranged on the outer periphery of the metal tube 16 and can be unitized.

FIG. 3 is a sectional view showing a preferred embodiment of a through hole reinforcing metal article for a concrete structure according to claim 4 of the present invention. The opening 22 formed in the steel frame material 22 to form the through hole 4 inside the steel frame concrete structure 20.
The through-hole-reinforcing metal fitting 2 is a metal fitting to be attached to the pipe body 24 connected to a, and a corrosion-resistant sleeve 26 attached to cover the outer circumference of the pipe body 24 and a corrosion-resistant sleeve 26.
Reinforcing bars 8 that are pre-arranged on the outside of the structure and are joined to the reinforcing bars inside the structure 20 to reinforce the periphery of the through hole 4 are unitized. The steel frame member 22 is I-shaped steel, and an opening 22a is formed near the center of the cross section of the web. Also,
The tubular body 24 is tubular and forms the through hole 4 itself. Corrosion resistant sleeves 26 are attached to the outer circumferences on both sides of the steel frame member 22. The corrosion-resistant sleeve 26 may be made of the above-mentioned corrosion-resistant metal or FRP.

Therefore, the steel frame concrete structure 20
Also in the opening 2, the opening 2 formed in the steel aggregate 22 inside thereof
Since the attachment can be completed by simply inserting and attaching the corrosion-resistant sleeve 26 having a diameter larger than that of the tubular body 24 connected to the 2a, the surroundings of the through hole 4 can be extremely easily constructed. Can be reinforced. As described above, even in the case of a building having a steel-framed concrete structure, it is possible to employ the reinforcing metal member 2, and it is possible to sufficiently reinforce the through hole 4 even in a steel-framed concrete structure.

[0022]

According to the present invention, the corrosion-resistant metal sleeve disposed inside the reinforced concrete structure to form the through-hole can secure a considerable strength in the through-hole portion, and also has durability. In addition to improving the properties, it is prevented from being corroded by the moisture contained in the air or concrete. In addition, by unitizing the sleeve and the reinforcing bar that is pre-arranged on the outside of the sleeve and is joined to the bar inside the structure to reinforce the periphery of the through hole,
This facilitates the connection with the surrounding bar arrangement and makes it possible to obtain sufficient strength around the through hole. Therefore, the reinforcement of the reinforced concrete structure itself and the construction of the through holes formed therein can be performed at the same time,
The construction period can be shortened. Also, since the voids made of cardboard that were conventionally used are not needed to form the through holes, the work of removing the voids that was necessary after the concrete was set and cured, and the industrial waste that was removed. There is no need to dispose of voids that have become.

[0023] Further, the reinforcing bar is a rod bar radially arranged on the outer peripheral surface of the sleeve outward in the radial direction,
By arranging in a mesh shape from ring-shaped reinforcements hung between the rod reinforcements along the circumferential direction of the sleeve, adhesion to concrete and reinforcement workability are improved, and the surroundings of through-holes are comparable to conventional ones. Can be sufficiently reinforced.

In place of the corrosion-resistant metal sleeve, F
By using a sleeve made of RP, covering the outer circumference of the FRP sleeve with a metal pipe, and preliminarily arranging the reinforcing pipe in the metal pipe, a considerable strength can be secured in the formed through-hole portion and durability is improved. It is improved and is not corroded by moisture. In addition, reinforcing bars can be arranged on the outer circumference of the metal tube, which enables unitization.

[0025] Further, it is a metal object to be attached to a pipe body connected to an opening formed in a steel frame material in order to form a through hole inside the steel frame concrete structure and covering the outer periphery of the pipe body. A corrosion-resistant sleeve to be attached and a reinforcing bar that is pre-arranged on the outside of the sleeve and that is joined to the bar inside the structure to reinforce the periphery of the through hole are unitized, and The above metal fittings can be adopted even in the above-mentioned building, and the through-hole can be sufficiently reinforced even in the steel-framed concrete structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a through hole reinforcing metal article of a concrete structure according to the present invention.

FIG. 2 is a front view showing an example of a through hole reinforcing metal article of a concrete structure according to claim 3 of the present invention.

FIG. 3 is a cross-sectional view showing an example of a through hole reinforcing metal article of a concrete structure according to claim 4 of the present invention.

[Explanation of symbols]

 2 Through Hole Reinforcing Hardware 4 Through Hole 6 Corrosion Resistant Metal Sleeve 8 Reinforcing Bar 10 Rod Bar 12 Ring Bar 16 Metal Pipe 18 FRP Sleeve 22 Steel Aggregate 24 Tubular Body 26 Corrosion Resistant Sleeve

Claims (4)

[Claims] 1. A corrosion-resistant metal sleeve disposed inside a reinforced concrete structure to form a through hole therein, and a reinforcing bar inside the structure which is pre-arranged outside the sleeve. A through hole reinforcing metal article for a concrete structure, characterized in that a reinforcing bar which is joined to reinforce the periphery of the through hole is unitized. 2. The reinforcing bars are laid radially on the outer peripheral surface of the sleeve radially outward, and are laid between the rod bars along the circumferential direction of the sleeve. 2. The through-hole reinforcing metal article for a concrete structure according to claim 1, wherein the through-hole reinforcing metal article comprises 3. The through-hole reinforcing metal fitting for the concrete structure according to claim 1, wherein the corrosion-resistant metal sleeve is replaced with an FRP sleeve, and a metal pipe is attached to the outer circumference of the FRP sleeve. A reinforcing metal fitting for a through hole of a concrete structure, wherein the reinforcing bar is arranged in advance in the metal pipe. 4. A metal object, which is attached to a pipe body connected to an opening formed in a steel frame material in order to form a through hole inside a steel frame concrete structure, and is attached to cover the outer periphery of the pipe body. A concrete structure characterized in that a corrosion-resistant sleeve to be used and a reinforcing bar that is pre-arranged on the outside of the sleeve and is joined to the bar inside the structure to reinforce the periphery of the through hole are unitized. Through hole reinforcement hardware.