JP3487444B2 - Method of forming piping hole in substructure and sleeve - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of forming a piping hole for a foundation structure and a sleeve for providing the piping hole in a foundation structure such as a cloth foundation that serves as a foundation of a building.

[0002]

2. Description of the Related Art In this type of conventional technology, for example,
As shown in FIG. 9, a cylindrical void tube 25 made of a paper material is arranged on the main bar lower end bar 10 of the bar arrangement 9 arranged on the base 12 such as crushed stone. The periphery is covered with a formwork such as a cal foam 13 or a metal form 15, and ready-mixed concrete is poured into the formwork to form a foundation structure 26 such as a cloth foundation having a hole 18 for piping. In this case, the pipe hole 1 formed by removing various molds from each other
The void tube 25 is forcibly removed from 8 by a predetermined means.

[0003]

However, according to the above-mentioned conventional technique, the top end 1 of the foundation structure 26 from the ground surface A is not formed.
There is a problem that the foundation height h up to 7 cannot be secured to 480 mm, and the earth-filling height a on the pipe is not sufficient.

Further, since the void tube 25 is made of a paper material, there is a problem that it is susceptible to a compressive force due to concrete pouring and is damaged or deformed.

Further, since the work of removing the void pipe 25 is performed by prying it with a tool such as a crowbar, the operator is not only labored but also when the void pipe 25 is deformed by the compressive force caused by the concrete pouring. Is the hole for piping 1
There is a problem that it is necessary to perform the correction work of No. 8 and there is also a problem that the work is very troublesome.

In addition, if the whid tube 25 is crushed, it is necessary to reopen the piping hole 18 with a tool such as a hole saw.

When the void pipe 25 is laid in the pipe hole 18 of the substructure 26 and a portion of the void pipe 25 is filled with mortar, the remaining void pipe 25 causes a capillary phenomenon in the building. Inviting water, foundation structure 26
There is also a problem that the soil inside the building surrounded by will be flooded with water.

Furthermore, since the void tube 25 is cut and attached and removed each time, it eventually becomes waste, which makes it impossible to use the void tube 25 repeatedly, resulting in a high cost.
There is also a problem that the beautification of the site is impaired by waste dust.

The present invention solves the above problems and enables a worker to easily and reliably form a hole for piping in a foundation structure without much trouble, and to improve mechanical strength and water resistance. It is an object of the present invention to provide a sleeve which is excellent in repeated use.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a formwork in which a sleeve is fixed on the main axis of a reinforcing bar arranged on a base and the periphery of the reinforcing bar is covered. Is placed, and the concrete is poured into the placed formwork to form a foundation structure, and after the foundation structure is hardened to a specified hardness, any formwork is removed and the foundation structure is A method of forming a piping hole for a substructure for removing a sleeve from a base, wherein the sleeve is elastic by bending inwardly on both edges of the half pipe located at a substantially central portion in the axial direction. using a sleeve body formed with a pair of sleeves holding pieces, one made of a sleeve packing detachably fitted to the pair of sleeves clamping pieces having a force
With one end of the member whose cross-sectional shape is semicircular
A pair of extension sleeves provided with side walls are attached to the three sleeves.
The base structure is detachably provided on the outer peripheral surface of the half pipe of the main body.
Base concrete that forms base concrete
Secure the side walls of the pair of extension sleeves to the side frame.
Unishi, when from the substructure of the removal work of the sleeves, remove the fitted sleeve packing sleeve clamping pieces of the sleeve body, and the pair of sleeves holding pieces when the inward by contraction force contraction As a result, both the outer peripheral length and the outer diameter become smaller, and a gap is created between the outer peripheral surface of the pair of sleeve holding pieces and the piping hole of the substructure, and the sleeve body is released from the compressive force of the ready-mixed concrete. In addition , the base concrete side formwork and extension space
By removing the fixing of the side wall of the leave,
The knob can be easily taken out from the hole for piping.

A width stop spacer is provided on the inner surface of the half pipe.
It is provided.

Further, a sleeve main body is formed by providing a pair of sleeve holding pieces that are elastically inward and curved inwardly on both edges of the half pipe located substantially in the center in the axial direction. A sleeve packing is detachably fitted between the holding pieces , and a width stop spacer is provided on the inner surface of the half pipe .

The cross-sectional shape is semicircular,
A pair of extension sleeves with side walls at one end
Is attached to the outer peripheral surface of the half tube of the sleeve body.
It

The sleeve is made of synthetic resin.
There is .

The synthetic resin is hard vinyl chloride
In .

[0016]

[0017]

With the above construction, according to the present invention, the sleeve is fixed on the main bar of the bar arranged on the base, and the form is arranged so as to cover the periphery of the bar, and the frame is arranged. Pour fresh concrete into the formwork to form the foundation structure. Then, after the foundation structure is solidified with a predetermined hardness, the placed formwork is deframed, and the sleeve is removed from the foundation structure to form the piping hole.

In the work, first, the sleeve packing detachably fitted between the pair of sleeve holding pieces of the sleeve body is removed by a predetermined means using a tool or the like. When the sleeve packing is removed, the pair of sleeve holding pieces of the sleeve body have an elastic force, so that the pair of sleeve holding pieces contract inward and the respective holding destinations are in contact with each other. At this time, the outer peripheral length and outer diameter dimension of the pair of sleeve clamping pieces with the sleeve packing removed are smaller than the outer diameter dimension and outer peripheral dimension of the pair of sleeve clamping pieces when the sleeve packing is fitted.

For example, when the outer diameter dimension of the pair of sleeve holding pieces when the sleeve packing is fitted between the pair of sleeve holding pieces is 120 mm and the outer peripheral length is 376.8 mm, the sleeve packing is removed. In this case, the outer diameter dimension of the pair of sleeve clamping pieces is 114 mm, and the outer peripheral length is 357.9 mm. The gap formed between the piping hole formed in the substructure and the tops of the outer peripheral surfaces of the pair of sleeve holding pieces of the sleeve body is about 3 mm.

Therefore, the pipe hole formed in the substructure does not come into contact with the outer peripheral surfaces of the pair of sleeve holding pieces of the sleeve main body, and one end of the half pipe of the sleeve main body is hammered or the like of the sleeve main body. The sleeve can be removed by tapping it in the axial direction.

Further, it is preferable that the sleeve packing is detachably fitted by prying it with a tool such as a screwdriver between the pair of sleeve holding pieces of the sleeve body.

Furthermore, the pair of width stop spacers provided on the inner surface of the half pipe of the sleeve main body serves to prevent the half pipe from being deformed by the compressive force from the green concrete and the shape and dimension being reduced.

As another example, a pair of extension sleeves are provided on the outer peripheral surface of the half pipe of the sleeve body according to the size of the base concrete width of the substructure, and the sleeves are arranged on the base. It is also possible to fix it on the main bar of the and arrange the form so as to cover the periphery of the bar. At this time, the side walls of the pair of extension sleeves and the base concrete side formwork are fixed in advance.

After that, in the same manner as above, the fresh concrete is poured into the formwork to form a foundation structure having piping holes. After the foundation structure is hardened to a predetermined hardness, the side walls of the pair of extension sleeves and the base concrete side formwork are released from the fixing, and the sleeves are removed from the piping holes in the same manner as above.

The sleeve used for these is made of a synthetic resin such as hard vinyl chloride and becomes a member having excellent mechanical strength and water resistance, so that the pair of sleeve holding pieces of the sleeve body can have elastic force. It will be possible.

[0026]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the sleeve 1 used in the present invention has a pair of semi-circular cross-sections having a semi-circular shape. A sleeve body 4 provided with a sleeve holding piece 3 of the sleeve body, a sleeve packing 5 detachably fitted between the pair of sleeve holding pieces 3 of the sleeve body 4, and a sleeve body 4 provided on the inner surface of the half tube 2. And a width stop spacer 6 that is formed.

The sleeve body 4 is preferably made of a material which is excellent in mechanical strength, water resistance, etc. and also has an elastic force, and is particularly preferably made of synthetic resin such as hard vinyl chloride. Optimal. Further, since the sleeve body 4 has an elastic force, when the sleeve packing 5 is not fitted between the pair of sleeve holding pieces 3 of the sleeve body 4, the holding destinations 3a of the pair of sleeve holding pieces 3 are in contact with each other. It is preferably in a state.

The sleeve body 4 thus formed is
It may be integrally formed by die molding, or may be formed by cutting a ready-made drain pipe made of hard vinyl chloride as a raw material so as to have the above-described shape. When a waste drain pipe is used at a construction site or the like, there is an advantage that the drain pipe can be reused.

The sleeve packing 5 is a cubic member fitted between the pair of sleeve holding pieces 3 of the sleeve body 4, and the holding destination 3a of the pair of sleeve holding pieces 3 which is in contact with the sleeve packing 5 is opened by a screwdriver or the like. And is fitted in a detachable manner with a predetermined gap secured. The sleeve packing 5 is preferably made of wood, but may be made of other materials such as synthetic resin and metals.

Since the sleeve packing 5 is a member fitted between the pair of sleeve holding pieces 3 of the sleeve body 4, the outer diameter dimension and the outer peripheral length of the pair of sleeve holding pieces 3 of the sleeve body 4 are set. It has the role of changing.

The width stop spacer 6 is a member in which a pair of fixing portions 8 curved inward are provided at both ends of the plate portion 7, and the width stop spacer 6 is provided on the inner surface of the half tube 2 of the sleeve body 4. The pair of fixing portions 8 are fixed with an adhesive or the like to support the half pipe 2 so as not to be deformed even when a load such as a compressive force is applied. If the sleeve body 4 is made of a durable material, the width stop spacer 6 may not be provided. Further, as an alternative to the width stop spacer 6, the styrofoam is placed inside the half pipe 2 of the sleeve body 4. The inner wall of the half tube 2 may be reinforced by filling with a filling material such as.

The sleeve 1 thus constructed is suitable for being applied to a standard substructure 16 in which the width of the base concrete 16a is 500 mm, and the construction method is as follows. As shown in FIG. 2, the sleeve 1 is placed on the predetermined lower end bar 10 of the main bar of the bar arrangement 9,
The sleeve 1 placed at 1 is tightly connected to the bar arrangement 9 so as not to shift.

Then, as shown in FIG. 3, a formwork for placing the bar arrangement 9 with the sleeve 1 fixed thereon on a base 12 such as crushed stone to form a base concrete 16a. A set of two curved calfoms 13 is placed at a predetermined position in a state where the bar arrangement 9 on which the sleeve 1 is placed is interposed between the calfoms 13 such that the curved inner surfaces face each other. Deploy. At this time, the semi-tube projecting hole 13a is provided in advance at a predetermined position of the cal foam 13 in contact with the semi-tube 2 of the sleeve body 4. Then, the upper openings 14 at both ends of the pair of sleeve holding pieces 3 provided in the sleeve body 4 are sealed, and the half pipe 2 of the sleeve body 4 is sandwiched by a pair of metal foam 15 which is a formwork. Place on top. And a set of two metal foam 1
Pour fresh concrete from above between 5 and, for example,
A standard foundation structure 16 such as a cloth foundation is built up.

At this time, the earth-height height a between the uppermost portion of the half pipe 2 of the sleeve body 4 and the ground surface A is preferably 100 mm. Further, the foundation height h from the ground surface A to the top end 17 of the standard foundation structure 16 is preferably 480 mm.

The sleeve 1 thus incorporated into the standard substructure 16 is located below the standard substructure 16 as shown in FIG.
As described above, since it is formed of a hard member such as hard vinyl chloride and has excellent mechanical strength and water resistance, it removes water from fresh concrete and is not deformed by compressive force. Therefore, the circular shape of the piping hole 18 is maintained, and since the sleeve 1 is not damaged, it can be used repeatedly.

When the ready-mixed concrete is hardened to a predetermined hardness and the sleeve 1 is removed, the molds of the two metal foams 15 located at the place where the sleeve 1 is incorporated are unframed. Then, the sleeve body 4
The sleeve packing 5 fitted between the pair of sleeve holding pieces 3 is removed with a tool or the like. At that time, as shown in FIG. 5, since the pair of sleeve holding pieces 3 of the sleeve body 4 have elasticity as described above, the pair of sleeve holding pieces 3
Both the outer diameter dimension and the outer peripheral length of the sleeve become smaller, and the clamping destinations 3a of the pair of sleeve clamping pieces 3 come into contact with each other, and a gap t is formed between the piping hole 18 and the pair of sleeve clamping pieces 3. Return to the state.

For example, when the sleeve packing 5 is fitted between the pair of sleeve holding pieces 3, the outer diameter of the pair of sleeve holding pieces 3 is 120 mm, and the outer peripheral length is 376.8 m.
When the sleeve packing 5 is removed, the outer diameter of the pair of sleeve holding pieces 3 is 114 mm.
The outer circumference length is 357.9 mm, and the gap t is about 3 m.
m.

By creating the clearance t, the compressive force from the green concrete is released and the sleeve 1 is in a removable state. Therefore, as shown in FIG. 6, both ends of the half pipe 2 of the sleeve body 4 are removed. One end is tapped with a mallet or the like, and the sleeve 1 is removed to form the piping hole 18 as shown by the imaginary line.

Further, as another embodiment, when the sleeve 1 is used for the non-standard foundation structure 19 having a width of the base concrete 16a in the range of 600 mm to 1050 mm, the sleeve 1 used is shown in FIG. Thus, it is suitable that the pair of extension sleeves 20 each having a semicircular cross section are detachably provided on the outer peripheral surface of the half tube 2 of the sleeve body 4. A side wall 22 made of a semicircular plate provided with a screw hole 21 is fixed to one end of the extension sleeve 20. Further, the sleeve 1 includes a pair of extension sleeves 2 formed by abutting an extension sleeve 20 on the outer peripheral surface of the half tube 2 of the sleeve body 4 and sliding the extension sleeve 20 in the axial direction.
Since 0 can be adjusted to a predetermined distance of the width of the base concrete 16a, there is an advantage that various sizes of the width of the base concrete 16a can be accommodated.

In order to use the sleeve 1 thus constructed for the non-standard foundation structure 19, as shown in FIG. 8, the sleeve 1 is formed in the same manner as when forming the standard foundation structure 16 described above. The reinforcing bar 9 placed on a base 12, such as crushed stone, is placed on a predetermined lower end bar 10 of the main bar, and tightly tied to the bar bar 9 so that the sleeve 1 is not displaced at the number line 11.

Then, a set of two metal foams 15 which are molds are arranged in the same manner as in the case of the standard substructure 19. In addition, the base concrete 19a of the non-standard foundation structure 19 has a pair of base concrete side formwork 23 arranged at predetermined positions within the range such that the width of the base concrete 19a is in the range of 600 mm to 1050 mm. . Next, bar arrangement 9
The side walls 22 of a pair of extension sleeves 20 provided on the outer peripheral surface of the half pipe 2 of the sleeve body 4 fixed to the main bottom end muscles 10 of the main body are brought into contact with the inner wall of the base concrete side formwork 23 to screw 2
Fix with 4 or nails. Then, ready-mixed concrete is poured into the space between the metal foams 15, which are the formwork, to form a nonstandard foundation structure 19 such as a cloth foundation.

After the nonstandard foundation structure 19 is hardened to a predetermined hardness, the sleeve 1 is removed in the same manner. At this time, the screws 24, nails and the like for fixing the side wall 22 of the extension sleeve 20 and the base concrete side formwork 23 are previously removed to release the fixation. Thereafter, the sleeve is replaced with the non-standard foundation structure 1 in the same manner as the standard foundation structure 16.
9 is removed from the hole 18 for piping.

[0044]

According to the method of forming a piping hole for a foundation structure according to the first aspect of the present invention, it is possible to simply and surely form the piping hole provided in the foundation structure by pouring fresh concrete into the formwork. it can. Moreover, since the shape of the piping hole is not deformed or crushed, it is not necessary to newly modify the piping hole, and the number of steps can be reduced. Further, since the sleeve is not damaged or deformed, it can be used repeatedly, which can reduce the cost, and it can prevent the generation of waste dust, resulting in an extremely good environment at the construction site. . Also, with the extension sleeve, various
Form a non-standard substructure with a base concrete width of
Can be made.

Form of the hole for piping of the substructure according to claim 2
As for the composition method, the half pipe of the sleeve body is made of fresh concrete.
Since it will not deform even if it receives compressive force from
Make sure to finish the piping hole without any modification
You can

In the sleeve according to the third aspect, by removing the sleeve packing fitted between the pair of sleeve holding pieces of the sleeve body, the outer peripheral length and the outer diameter of the pair of sleeve holding pieces can be reduced. This makes it extremely easy to remove from the piping hole formed in the substructure. In addition, the half pipe receives the compressive force from the green concrete.
It will not be deformed even if received, so it is necessary to make a new correction.
You can surely finish unnecessary holes for piping.

[0047]

In the sleeve according to claim 4 , since the pair of extension sleeves are attached to the outer peripheral surface of the half pipe of the sleeve body, it is possible to cope with various sizes of base concrete width. It can be applied in buildings and can be used in a wide range.

The sleeves of the fifth aspect, it is possible to produce products with excellent mechanical strength and water resistance can integrally molded sleeve with inexpensive material, elastic force to the pair of sleeves holding pieces of the sleeve body Can have
In addition, since it can be used repeatedly, it is possible to prevent the generation of waste dust, and it does not harm the environment of the construction site.

The sleeves according to claim 6, wherein the manufacture less expensive because the drain pipe made of a hard vinyl chloride which has been disposed of in a construction site or the like to work it is possible to form the sleeve. In addition, since the waste is reused, the environment at the construction site becomes extremely good.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a sleeve according to the present invention.

FIG. 2 is a perspective view when the sleeve is fixed to the reinforcing bar.

FIG. 3 is a cross-sectional view when a standard substructure having a piping hole is formed using a sleeve.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is an enlarged operation view of a main part of FIG.

FIG. 6 is a perspective view showing a state in which the mold is unframed and the sleeve is incorporated in the standard substructure.

FIG. 7 is an exploded perspective view showing a sleeve provided with an extension sleeve.

FIG. 8 is a cross-sectional view of a case where a nonstandard foundation structure having a piping hole is formed using a sleeve provided with an extension sleeve.

FIG. 9 is a cross-sectional view in the case of forming a substructure having a piping hole by using a void tube of a conventional example.

[Explanation of symbols]

t gap 1 sleeve 2 half pipe 3 Sleeve clamping piece 4 Sleeve body 5 Sleeve packing 6 width stop spacer 9 Bar arrangement 12 foundation 16a Base concrete width 18 Piping hole 20 Extension sleeve 22 Side wall

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-136765 (JP, A) Actual development Sho 61-52035 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F16L 5/00 E04F 17/08

Claims (6)

(57) [Claims] 1. A sleeve is fixed on a main axis of a reinforcing bar arranged on a base, a mold is arranged so as to cover the periphery of the reinforcing bar, and ready-mixed concrete is poured into the arranged mold. After the foundation structure is formed with, the foundation structure is hardened to a specified hardness, the frame is removed from the frame and the sleeve is removed from the foundation structure. Piping hole for the foundation structure is formed. In the method, the sleeve includes a sleeve main body provided with a pair of sleeve holding pieces having an elastic force that bends inward on both edges of the half pipe located at a substantially central portion in the axial direction, A sleeve packing that is detachably fitted between the pair of sleeve holding pieces is used, and the sectional shape is a semicircle.
Of a pair of side walls provided at one end of the shaped member
Attach the extension sleeve to the outer surface of the half tube of the sleeve body.
The base concrete of the foundation structure
The pair of extensions on the base concrete side formwork to be formed
When the sleeve is removed from the foundation structure, the sleeve packing fitted between the sleeve holding pieces of the sleeve body is removed, and at that time the pair of sleeve holding pieces shrinks. The force shrinks inward to reduce both the outer peripheral length and the outer diameter, creating a gap between the outer peripheral surface of the pair of sleeve clamping pieces and the piping hole of the substructure, and creating the sleeve body. Releasing from the compressive force of concrete,
Unlocking the side wall of the formwork and extension sleeve
A method for forming a piping hole for a foundation structure, by which the sleeve can be easily taken out from the piping hole. 2. A width stop spacer is provided on the inner surface of the half pipe.
Substructure according to claim 1, characterized in that
Method for forming piping holes 3. A sleeve main body comprising a pair of sleeve holding pieces, which have an elastic force and which are bent inward, is formed on both edges of the half pipe located substantially at the center in the axial direction. A sleeve characterized in that a sleeve packing is detachably fitted between the holding pieces , and a width stop spacer is provided on the inner surface of the half tube . 4. A pair of extension sleeves each having a semicircular cross section and provided with a side wall at one end thereof are attached to the outer peripheral surface of the half tube of the sleeve body. 3 Symbol placement of the sleeve. 5. A method according to claim 3 or 4 sleeve, wherein the forming the sleeve of a synthetic resin. 6. A sleeve as claimed in 5 wherein said synthetic resin is characterized in this <br/> and a hard vinyl chloride.