JP2844053B2 - Formwork structure for concrete casting during basement construction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete casting formwork structure for constructing a basement of a concrete structure using a formwork divided so as to be appropriately connectable.

[0002]

2. Description of the Related Art Conventionally, as a building material for constructing a basement having a concrete structure, a watertight box-shaped inner frame such as that disclosed in Japanese Utility Model Publication No. 4-4038 proposed by the present applicant has been proposed. A structure including a bottom frame on which the inner frame is mounted, and a pair of first short side frames attached to the bottom frame at right angles, and assembled to the structure adjacent to the first short side frame. Second
Some have a long side frame.

[0003] This building material is manufactured by assembling the short side frame and the long side frame with high accuracy in a factory and assembling them on site, thereby shortening the working time, minimizing the landfill hole, treating the remaining soil, backfilling, etc. This has the effect of saving costs.

Then, in order to further reduce the working time and improve the productivity, as shown in FIG.
Is constituted by a plurality of substantially frame-shaped or substantially frame-shaped frames that cover one of the openings, and these frames are joined in parallel by joining the edges of the openings to assemble the entire inner frame a. That way it came to be offered.

In the inner frame a, the above-described bottom frame b, short side frame c, and long side frame d are installed in the excavated hole, and the bottom frame b, the short side frame c,
After arranging the reinforcing bar e along the long side frame d, it is connected and installed inside the reinforcing bar e.

[0006]

However, in the construction of a mold having such a structure, once the frame body is assembled and the inner frame is installed, the reinforcing bar e becomes the inner frame a and the bottom frame b, and the short side. Since it is in a state of being confined between the frame c and the long side frame d, it is difficult to attach a joint bar or a reinforcing bar.

Further, when concrete is poured between the inner frame a and the bottom frame b, the short side frame c, and the long side frame d, the concrete does not completely spread between the inner frame a and each frame. In some cases, the concrete floor and the concrete wall may not be completely formed, resulting in poor construction.

In view of the above-mentioned disadvantages, the present invention makes it possible to attach joint bars and reinforcing bars after assembling the frame body and installing the inner frame, and to set concrete at the time of placing concrete. It is an object of the present invention to provide a formwork structure for placing concrete at the time of constructing a basement that can be completely filled.

[0009]

SUMMARY OF THE INVENTION Accordingly, the present invention provides an inner frame formed in a watertight box shape, a bottom frame on which the inner frame is placed at an appropriate interval, and a bottom frame. An outer frame that stands up and surrounds the side circumference of the inner frame while maintaining an appropriate interval, and a reinforcing bar disposed between the inner frame and the bottom frame and between the inner frame and the outer frame, The inner frame is formed by joining a plurality of substantially frame-shaped or substantially frame-shaped divided frame bodies that cover one of the openings by joining the edges of the opening portions and connecting a plurality of the divided frame bodies in parallel. At the edge of the opening of the portion constituting the side or bottom surface of the inner frame, a notch is formed by partially notching, and a cover body capable of closing the notch is formed in the notch. Solves the above problem.

Further, according to the present invention, the bottom frame, the outer frame, and the reinforcing bar are divided so as to be appropriately connectable, and are formed so as to surround the inner frame at an appropriate interval by being connected. Solve the problem.

[0011]

According to the present invention, a bottom frame and an outer frame are installed in a hole excavated at a place where a basement is to be constructed, and reinforcing bars are arranged along the inner surfaces of the bottom frame and the outer frame. The divided frames are connected to assemble the inner frame.

Then, a gap is formed by a notch at the boundary between the divided frames at a portion constituting the side surface or the bottom surface of the inner frame in each divided frame, so that a joint bar or a reinforcing bar is inserted from there. We take over reinforcement and give reinforcement.

[0013] When the concrete is poured, concrete is poured from the cutout portion or the concrete is pushed in, so that the concrete can be reliably filled into the space between the inner frame, the bottom frame and the outer frame. I do.

Then, according to the filling of the concrete, covers are attached to the cutouts on the side and bottom surfaces to close them, and the inner frame is assembled in a watertight structure to cure the concrete.

Further, the bottom frame, the outer frame and the reinforcing bar are divided so that they can be connected to each other as appropriate, and the inner frame is formed so as to surround and hold the inner frame at an appropriate interval by being connected. Can be assembled and assembled, thereby improving productivity.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. The reference numeral 1 shown in the figure is an inner frame, and the inner frame 1 is assembled into a watertight box by connecting three divided frames 2. The three divided frame bodies 2 are formed of a steel plate, and are formed of one of a substantially frame type having openings on both front and rear sides and two of a substantially frame type having one opening closed. A box-shaped inner frame is formed by joining the edges of the opening portions of the divided frame members 2 each having one of the openings closed to the edges of both opening portions of the opened substantially frame-shaped divided frame member 2 and connecting them in parallel. Assembled as 1. In the illustrated example, the joining portions 2A are formed at the edges of the openings by extending the respective sides of the respective divided frame bodies 2 inward, and the joining portions 2A
A joint hole 2B is provided at a position that coincides when the divided frame bodies 2 are brought into contact with each other, and these joint holes 2B are formed by bolting.

A notch 3 is formed at the edge of the opening of each of the divided frame members 2 constituting the side surface or the bottom surface of the inner frame 1 by cutting the central portion to an appropriate size. Notch 3
Are provided at positions that are just facing each other when the divided frames 2 are connected to each other, so that when the divided frames 2 are connected, the two cutouts 3 are combined with the side and bottom surfaces of the inner frame 1. In this case, two gaps are formed.

The two notches 3 facing each other
A cover 4 having a substantially rectangular plate shape capable of uniformly closing the cutouts 3 is attached across the two divided frames 2.

In the illustrated example, the surrounding plate 3A is formed so that the peripheral edge of the notch 3 extends at the same height as the joint portion 2A, and the edge of the surrounding plate 3A extends further inward and is attached. An attachment plate 3B provided with a hole 3C is formed, while the cover body 4 has a surrounding plate 3A of two notches 3 facing each other.
A rectangular projection 4A fitted from the inside is formed in a rectangular gap formed by the mounting plate 3B, and the periphery thereof can be brought into contact with the mounting plate 3B, and the mounting hole 3A of the mounting plate 3B at the time of the contact.
A contact plate 4B provided with a mounting hole 4C corresponding to C is formed, and the mounting hole 3C and the mounting hole 4C are connected to the bolt B and the nut with the sealing material S interposed between the mounting plate 3B and the contact plate 4B. By stopping at N, the cover body 4 is attached with the notch 3 closed in a watertight manner.

Reference numeral 5 denotes a bottom frame on which the above-described inner frame 1 is placed at an appropriate interval, and reference numeral 6 denotes a bottom frame which rises from the peripheral edge of the bottom frame 5 so that the side circumference of the inner frame 1 has an appropriate interval. Reference numeral 7 denotes an outer frame that is held and surrounded by the reinforcing bars disposed between the inner frame 1 and the bottom frame 5 and between the inner frame 1 and the outer frame 6. The bottom frame 5 and the outer frame 6 and the reinforcing bar 7 are divided into three in the illustrated case,
They are assembled into a box with an open top by connecting them.

The bottom frame 5, the outer frame 6, the reinforcing bars 7, and the inner frame 1 are installed in holes drilled to a predetermined size to construct a basement. The bottom frame 5 and the outer frame 6 are assembled in a box shape and installed, and then the divided reinforcing bars 7 are installed along the inner surfaces of the bottom frame 5 and the outer frame 6, and finally the cover body 4 is not attached. The inner frame 1 assembled in a box shape in this state is installed. Here, the joint bars 8 are formed from the gaps formed by the cutouts 3 on the side and bottom surfaces of the inner frame 1.
And reinforcing bars (not shown) are inserted between the inner frame 1 and the outer frame 6 and between the inner frame 1 and the bottom frame 5, and the rebar 7 divided as shown in FIG. It is joined or reinforced with reinforcing bars (not shown).

Next, the space between the inner frame 1 and the outer frame 6 and the inner frame 1
The concrete C is cast between the inner frame 1 and the bottom frame 5. At this time, even if the concrete C is poured from the gap between the upper inner frame 1 and the outer frame 6, the center of the bottom surface and the corners of the side surfaces are formed. Since the concrete C is hard to spread, etc., the concrete C can be completely spread by injecting the concrete C also from the cutouts 3 on the side and bottom surfaces, or by inserting a square bar or the like from the cutout 3 and pushing the concrete C. To do. When the notch 3 is filled with the concrete C, the cover 4 is attached and the notch 3 is closed, so that the F concrete C does not enter the inner frame 1 and the form of the basement is directly formed. Things.

In the illustrated example, the bottom frame 5, the outer frame 6, and the reinforcing bar 7 are divided into three parts so as to be connectable. However, the present invention is not limited to this, and these parts are divided. They may not be provided, or may be constructed from smaller parts.

Also, the shape, size, material and configuration of the divided frame body, the shape and size of the notch, the shape, size and material of the cover body, the configuration, the shape, size, material and configuration of the bottom frame and the outer frame, and reinforcing steel It is needless to say that the shape, dimensions, configuration, etc. are not limited to the above-described embodiment.

[0025]

According to the present invention configured as described above, the inner frame 1 formed in a water-tight box shape, the bottom frame 5 on which the inner frame 1 is placed at an appropriate interval, and An outer frame 6 which rises from the peripheral edge of the bottom frame 5 and surrounds the side circumference of the inner frame 1 at an appropriate interval, and between the inner frame 1 and the bottom frame 5 and the inner frame 1
And the reinforcing bar 7 disposed between the outer frame 6 and the inner frame 1. The inner frame 1 is formed by forming a substantially frame-shaped or substantially frame-shaped divided frame body 2 with one of the openings closed. The inner frame 1 is formed by joining and connecting a plurality of parallel frames.
Since the notch 3 is formed by partially notching the edge of the opening of the portion constituting the side surface or the bottom surface of the notch 3, and the notch 3 is formed so that a cover body 4 capable of closing the notch 3 can be attached. A hole of a minimum size is excavated in order to construct a basement, and a bottom frame 5, an outer frame 6 and a reinforcing bar 7 are installed therein, and then a divided frame is connected therein to connect an inner frame 1 to the base frame. After assembling and installing, the joint bar 7A and the reinforcing bar can be inserted from the gap formed in the inner frame 1 by the cutout portion 3, and the reinforcing bar 7 can be connected and reinforced. Accordingly, workability is further improved as compared with the conventional connection type frame structure.

When the concrete C is poured between the inner frame 1, the bottom frame 5 and the outer frame 6, the concrete C is poured from the notch 3, the concrete C is pushed in, or the filling state is changed. By confirming, it is possible to reliably fill the concrete C as a whole.

The bottom frame 5, the outer frame 6, and the reinforcing bar 7 are
The inner frame 1 is formed so as to be able to be appropriately connected to each other, and is connected so as to surround the inner frame 1 at an appropriate interval.
And the reinforcing bars 7 can be connected and assembled at the site to assemble and construct, so that the productivity of the concrete casting formwork when constructing the basement is improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a main part showing an attached state of a cover body for closing a notch.

FIG. 4 is an exploded perspective view showing a conventional concrete casting formwork structure when a basement is constructed.

[Explanation of symbols]

1 inner frame 2 divided frame 2A
Joint 2B Joint hole 3 Notch 3
A Surrounding plate 3B Mounting plate 3C Mounting hole
4 Cover 4A Convex part 4B Contact plate 4
C mounting hole 5 bottom frame 6 outer frame 7
Reinforcing bar 8 Joint bar B Bolt N
Nut S Sealing material C Concrete G
Ground a Inner frame b Bottom frame c
Short side frame d Long side frame e Rebar

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-44223 (JP, A) JP-A-5-44224 (JP, A) JP-A-5-1420 (JP, A) 94130 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 29/00

Claims (2)

(57) [Claims] 1. An inner frame formed in a watertight box shape, a bottom frame on which the inner frame is placed with an appropriate space therebetween, and a side periphery of the inner frame rising from the periphery of the bottom frame to form An outer frame that holds and surrounds at an appropriate interval, and a reinforcing bar that is arranged between the inner frame and the bottom frame and between the inner frame and the outer frame, wherein the inner frame has a substantially frame type or one side. It is formed by joining the edges of the substantially frame-shaped divided frame body closing the opening and joining the edges of the opening in parallel, and forming the side or bottom surface of the inner frame in each divided frame. A notch is formed by partially notching the edge of the opening of the part to be closed, and a cover body capable of closing the notch is formed in the notch. Installation formwork structure. 2. The basement building according to claim 1, wherein the bottom frame, the outer frame, and the reinforcing bar are divided so as to be connectable to each other as appropriate, and are formed so as to surround the inner frame at an appropriate interval by being connected. Formwork structure for concrete casting at the time.