JPH04247908A - Plate material made of precast concrete, its manufacture and concrete form - Google Patents

Abstract

PURPOSE:To provide a plate material made of precast concrete, which can build a wall surface precisely without taking much labor and time, and provide its manufacturing method and a concrete form. CONSTITUTION:This is a plate material 1 made of precast concrete where an opening part 6 of the tip of a cylindrical female screw body 4 press-contacted to a profile iron reinforcing rod 3 arranged within is shown up above the surface. The opening part 6 of the tip is for arrangement of the iron reinforcing rod by joining to the cylindrical female screw body of the other profile iron reinforcing rod 3 through a connecting bolt. After the concrete is placed and solidified within a concrete form. where the cylindrical female screw body 4 press-contacted beforehand to an end part of the profile iron reinforcing rod is stood up at a right angle to the inside of a concrete form, de-concrete- molding is performed and the plate material made of the precast concrete is manufactured.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast concrete board used in constructing walls, etc. in civil engineering construction work, a method for manufacturing the same, and a formwork.

0002

2. Description of the Related Art In the case of conventional reinforced concrete wall construction work, reinforcing bars were arranged on site by combining them, a formwork was set around the reinforcing bars, and then concrete was poured. Reinforcement work requires a lot of effort and time because it involves joining reinforcing bars from other structures. Furthermore, the use of a large number of cylindrical female threaded bodies in precast concrete has the problem that the mounting position, mounting angle, etc. are likely to be misaligned. Furthermore, these factors also caused the construction period of the wall construction work to become longer.

0003

[Problems to be Solved by the Invention] The problem to be solved by the present invention is to provide a precast concrete board, a method for manufacturing the same, and a formwork that allow wall surfaces to be constructed accurately without spending much time and effort. be.

0004

[Means for Solving the Problems] The gist of the present invention that solves the above problems is as follows: 1) A cylindrical female threaded body, which is crimped to the end of a reinforcing bar in advance, is placed inside a plate-shaped concrete on the surface of the same plate-shaped concrete. Precast concrete plate material buried perpendicularly to the inner surface of the formwork material, with the tip opening of the cylindrical female threaded body exposed on the same surface 2) The cylindrical female threaded body, which has been crimped to the end of the reinforcing bar material in advance, is buried at right angles to the inner surface of the formwork material. The same formwork material is removably installed on the same inner surface, the same formwork material is combined with other formwork materials to form a formwork of a specified shape, concrete is poured into the formwork, and after hardening, the same formwork is Precast concrete plate manufacturing method to remove 3) A flat bar material with multiple holes arranged and drilled is installed along the inner surface of the formwork material, and a cylindrical female threaded body is attached to each hole of the flat bar material and a ring is attached and detached. This is a formwork for precast concrete plates with fixed frame members.

[0005]

[Operation] Since the tip opening of the cylindrical female threaded body is exposed on the surface of the precast concrete plate of the present invention, the cylindrical female threaded body of another deformed reinforcing bar can be connected to the same tip opening via a connecting bolt. The structure is designed to connect and place reinforcement. Since the cylindrical female threaded body is buried perpendicular to the same surface, it can be accurately joined to other deformed reinforcing bars and will not shift during work.

[0006] In the precast concrete plate manufacturing method of the present invention, a cylindrical female threaded body crimped to the end of a reinforcing bar in advance is erected at right angles to the inner surface of a formwork material so that it can be attached and removed freely, and the same formwork material is attached to other molds. A formwork of a predetermined shape is formed by combining with the frame material. After pouring concrete into the formwork and solidifying it, the formwork is removed to complete a precast concrete plate in which the cylindrical female threaded body and the reinforcing material are embedded. Since the tip opening of the cylindrical female threaded body is erected in contact with the inner surface of the formwork material, the tip opening will be exposed on the surface of the precast concrete plate after completion.

[0007] In the formwork for precast concrete plate material of the present invention, the frame members are fixed to the holes arranged and drilled in the flat bar material attached along the inner surface of the formwork material. The cylindrical female threaded body is detachably attached to the frame member, and the cylindrical female threaded body can be accurately positioned and held at right angles. Further, the threaded portion of the cylindrical female threaded body is not damaged, and the work of removing the frame is easy.

[0008]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings. Fig. 1 is a partially cutaway perspective view showing an example of a precast concrete plate, Fig. 2 is a perspective view showing an example of a formwork, Fig. 3 is a partially cutaway sectional view taken along A-A in Fig. 2, and Fig. 4 is a manufacturing process. FIG. 5 is a front view showing another example of a precast concrete plate material.

In the precast concrete plate material 1 of this embodiment, deformed reinforcing bars 3 are pre-installed inside the concrete plate 2.
The cylindrical female screw body 4 crimped to the end of the plate-shaped concrete 2
is buried perpendicularly to the surface 5 of the cylindrical female threaded body 4, and the tip opening 6 of the cylindrical female threaded body 4 is exposed to the surface 5. The precast concrete plate material 1 manufactured in advance is placed at a predetermined position on the site, and the cylindrical female threaded body crimped to the end of another deformed reinforcing bar is joined to the tip opening 6 via a connecting bolt to perform the reinforcement work. I will do it, so
It can significantly reduce labor and time and allow for accurate work.

In the formwork 7 for manufacturing the precast concrete plate material 1 of this embodiment, a flat bar material 9 having a plurality of holes 8 arranged and drilled therein is attached along the inner surface 11 of the formwork material 10, and a cylinder is inserted into each hole 8. A removable ring-shaped piece member 12 is fixed by a female threaded body 4. Since the flat bar material 9 and the block member 12 are combined, concrete placement work and frame removal work can be carried out smoothly and reliably, and the threaded part 13 of the cylindrical female threaded body 4 is not damaged. do not have. Further, the position and perpendicularity of the cylindrical female threaded body 4 can be accurately ensured.

In the manufacturing method of the precast concrete plate material 1 of this embodiment, a cylindrical female threaded body 4 crimped to the deformed reinforcing bar 3 in advance is erected at right angles to the inner surface 11 of the formwork material 10 in a detachable manner, and the formwork material 10 is 10 is combined with other formwork material 14 to form a formwork 7 of a predetermined shape, concrete 15 is poured into the formwork 7 and solidified, then the formwork 7 is removed and the precast concrete plate material 1 is Finalize. Threaded portion 13 of cylindrical female threaded body 4
A cap 16 is attached to the tip opening 6 to prevent foreign matter from entering the
is set.

FIG. 5 shows another embodiment of a precast concrete plate 17. A large number of cylindrical female screw bodies 18, which are crimped to the ends of the deformed reinforcing bars in advance, are buried perpendicular to the surface 19. The deformed reinforcing bars crimped in advance to the cylindrical female threaded body 18 are attached to the main reinforcing bars 20 inside the precast concrete plate 17. Furthermore, a window frame 21 is attached to the precast concrete board 17.

[0013]

[Effects of the Invention] According to the present invention, it is possible to provide a precast concrete board, a method for manufacturing the same, and a formwork that allow wall surfaces to be constructed accurately without much effort and time.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an example of a precast concrete plate material.

FIG. 2 is a partially cutaway perspective view showing an example of the formwork.

FIG. 3 is a partially cutaway sectional view taken along line AA in FIG. 2;

FIG. 4 is a process explanatory diagram showing an example of a manufacturing method.

FIG. 5 is a front view showing another example of a precast concrete plate material.

[Explanation of symbols]

1 Precast concrete plate material 2 Plate concrete 3 Deformed reinforcing bar 4 Cylindrical female thread body 5 Surface 6 Tip opening 7 Formwork 8 Hole 9 Flat bar material 10 Formwork material 11 Inner surface 12 Piece member 13 Threaded portion 14 Formwork material 15 Concrete 16 Cap 17 Precast concrete plate material 18 Cylindrical female thread body 19 Surface 20 Main reinforcing bar 21 Window frame

Claims (3)

[Claims] [Claim 1] A cylindrical female threaded body crimped to the end of a reinforcing bar material in advance is buried inside a plate-shaped concrete at right angles to the surface of the same plate-shaped concrete, and the tip opening of the cylindrical female threaded body is Precast concrete plate exposed on the same surface. [Claim 2] A cylindrical female threaded body crimped to the end of a reinforcing bar material in advance is erected at right angles to the inner surface of the formwork material in a detachable manner, and the same formwork material is combined with other formwork materials. A precast concrete board production method in which a formwork of a predetermined shape is formed using concrete, concrete is poured into the formwork, and the formwork is removed after solidification. 3. A ring-shaped piece member in which a flat bar material with a plurality of arranged holes is attached along the inner surface of the formwork material, and a cylindrical female threaded body can be detachably attached to each hole of the flat bar material. Formwork for precast concrete plates with fixed.