JPH0718859A - Method for constructing concrete skeleton - Google Patents

Abstract

PURPOSE:To construct a concrete skeleton which has a through hole leading to a buried pipe so that when the concrete skeleton is constructed a line pipe can be buried while passing through the skeleton. CONSTITUTION:A cylindrical blocking plug 10 is made from an elastic material to match the aperture of a line pipe 30 buried in a concrete skeleton A. The blocking plug 10 is inserted into the opening 31 of the buried pipe 30 in a portion where the concrete skeleton A is formed. The blocking plug 10 is projected out of the opening 31 by the amount to secure the length of a through hole 40 leading to the buried pipe 30. A form material 21 is pressed against the projected outer end face 10a of the blocking plug 10, and the blocking plug 10 is secured to the form material 21 with nails 50. Concrete is placed in the form, and as the form material 21 is dismantled the blocking plug 10 is extracted out of the concrete skeleton A, thus forming the through hole 40.

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 through holes for various pipes in a skeleton portion at the stage of constructing a skeleton portion by pouring concrete.

[0002]

2. Description of the Related Art Conventionally, in construction work sites such as beams, voids in walls, etc., and steel sleeves, it is only necessary to insert a pawl or the like between the formwork and the void pipe or sleeve pipe. Concrete was poured as it was without any effective means for completely securing the penetration with the sleeve pipe.

[0003]

Therefore, according to the conventional method, even if the formwork is dismantled after placing concrete, concrete often flows in through the gap between the void pipe or the sleeve pipe and the formwork, and after dismantling the formwork, The concrete had to be scavenged to form through holes. For this reason, it is necessary to search the drawings for the places where the void pipes and the sleeve pipes are to be buried in the frame portion after the concrete is poured, and then perform the concrete scrubbing work, which takes a lot of trouble. Therefore, the present invention, at the time of construction by concrete casting of the skeleton part, so that a buried pipe for piping can be buried in the skeleton part in a penetrating state, a method of forming a through hole leading to the buried pipe in the skeleton part, The purpose is to provide.

[0004]

[Means for Solving the Problems] In order to achieve the above object, in a construction method of a concrete skeleton in which a through hole for facility piping is provided in a skeleton of a structure at the time of construction of a skeleton of a building, an embedded pipe is placed at a predetermined position of a formwork. Place the column-shaped closure plug that matches the diameter of the buried pipe into the mouth of the buried pipe of the body construction part for the required length, fix the outer end of the closure plug to the formwork material for concrete pouring, and then mold Concrete is poured into the frame, and after the concrete is poured, the block plug is removed together with the form material to form a through hole. Furthermore, a columnar closing plug is formed of an elastic member.

[0005]

According to the present invention, the columnar obstruction plug which is provided for penetrating the skeleton portion and fits the diameter of the embedding pipe is inserted into the mouth of the embedding pipe for a required length to close the mouth, and at the same time, the outer end of the obstruction plug is closed. Fix it to the formwork material. For this reason, by pouring concrete into the formwork and then dismantling the formwork material, the obstruction plugs fixed to the formwork material are also pulled out from the placed concrete at the same time, and penetrate through the embedded pipe inside the frame. The hole is formed so that the embedded pipe in the body portion can be embedded in a penetrating state. Since the obstruction plug is made of an elastic member, it can be pushed into the mouth of the buried pipe while being slightly deformed, and even if it enters the interior of the buried pipe, the area around the obstruction plug will be It can be adhered so that there is no gap on the inner wall.

[0006]

Embodiments of the present invention will be described with reference to the drawings. The obstruction plug 10 used in the present embodiment is a columnar shape in which rubber is used as an elastic member, and its diameter is formed according to the diameters of various buried pipes 30 such as void pipes and sleeve pipes. In this embodiment, rubber is used for the plug 10. However, basically, a member having elasticity and stretchability and having a low affinity for concrete is used as the plug. can do.

The buried pipe 30 is provided in one of the mold members 20 so that the end surface of the buried pipe 30 is aligned with the surface of the mold member 20 in the direction of penetrating the portion A of the concrete frame to be formed. . The obstruction plug 10 having the above structure is inserted into the opening 31 of the buried pipe 30 in the portion where the concrete skeleton A is formed.
Since the rubber obstruction plug 10 has elasticity and stretchability, even if it is pushed into the buried pipe 30 a little tightly, the buried pipe 3
It adheres to the inner wall of No. 0 and can effectively block the inflow of concrete at the time of concrete pouring described later.

To the extent that the plug 10 is inserted into the buried pipe 30, the length L of the plug 10 protruding from the opening 31 of the buried pipe 30 to the inside of the frame A to be formed by concrete pouring. The length is set to match the required length a of the through hole 40 to be provided. Further, on the outer end surface 10a of the closure plug 10 which is adapted to protrude from the buried pipe 30,
The other mold material 21 is put together, and the nail 50 is driven from the front side of the mold material 21 toward the outer end surface 10a of the closure plug 10 to fix the closure plug 10 to the form material 21. Wood screws may be used instead of the nails 50.

In this way, a mold for forming the concrete skeleton A is formed, and concrete is poured into the mold. After pouring concrete, the formwork materials 20 and 21 are disassembled. At this time, since the block plug 10 is fixed to the mold member 21, the block plug 10 is pulled out together with the mold member 21, and the through hole 40 communicating with the opening 31 of the buried pipe 30 has the concrete structure A.
Formed inside.

Further, the obstruction plug 10 is not formed entirely of rubber as in the above-mentioned embodiment, but a rubber material or the like is wound to a certain thickness on a wooden pillar having a diameter slightly smaller than the diameter of the buried pipe 30. It may be attached to the diameter of the buried pipe 30 so that it can be just fitted and inserted into the buried pipe 30. The closing plug 10 may be fixed inside the mold material 21 in advance, and the closing plug 10 may be inserted into the buried pipe 30 when the mold material 21 is attached.

[0011]

EFFECTS OF THE INVENTION According to the present invention, in the concrete pouring of the skeleton part of the building, since the through hole communicating with the buried pipe inside the skeleton is formed, unlike the conventional case, the burial is buried inside the skeleton after the concrete is laid. The trouble of finding the mouth of the buried pipe,
It is possible to save the labor of the construction work having the through hole for the pipe or the like in the skeleton, because the trouble of cleaning the concrete is eliminated.

[Brief description of drawings]

FIG. 1 is a cross-sectional view (a) showing a state in which a blocking plug is inserted into the mouth of a buried pipe. Place the form material on the outer end surface of the plugged plug,
Sectional drawing (b) of the state which fixed the obstruction plug to the form material with the nail. Sectional drawing (c) which showed the state which removed the block plug together with the formwork material after concrete placement.

FIG. 2 is a perspective view of an obstruction plug.

[Explanation of symbols]

 10 Closing Plug 20 Formwork Material 21 Formwork Material 30 Buried Pipe 40 Through Hole A Concrete Frame

Claims (2)

[Claims] 1. A method of constructing a concrete skeleton in which a through hole for equipment piping is provided in a skeleton of a building when constructing a skeleton of a building, in which a buried pipe is arranged at a predetermined position of a formwork, and a columnar shape corresponding to the diameter of the buried pipe is provided. Insert the plug of the plug into the opening of the buried pipe in the building construction part for the required length, fix the outer end of the plug to the formwork material for concrete pouring, then place concrete in the formwork, and place concrete. A method of constructing a concrete skeleton, characterized in that a through hole is formed by later removing a blocking plug together with a form material. 2. The method for constructing a concrete skeleton according to claim 1, wherein the columnar plug is formed of an elastic member.