JP2002250042A - Form structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems of a conventional wood combination panel form for foundation concrete supporting the pole of a traffic signal or a road lamp or the like, which is required to be left in an excavated state of a road or the like in about one week from its assembly to demolition, thus causing a danger or the like. SOLUTION: An upper end frame section 3, a lower end frame section 4, and side end frame sections 5 are provided at the peripheral edge sections of a steel sheet corrugated sheet 2 having a plurality of vertical grooves 2a, and reinforcing bars 6 are horizontally provided at the middle portion to form a single unit 1. A plurality of single units 1 are arranged to form a frame body, the side frame sections 5 are adjoined together at a plurality of places, they are connected together with hinges 7 at least at one place, and they are connected together with bolts 8 at least at another place. After the completion of assembly, a hole H is back-filled before concrete is placed, and the frame body is buried in the ground as it is.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel concrete formwork for foundation concrete that is cast into the ground to support a pillar such as a traffic signal or an outside light when the pillar is erected. It is.

[0002]

2. Description of the Related Art Conventionally, when pillars such as a traffic signal and an outside light are provided, a form made of a wood panel is assembled into a hole formed by digging up a ground such as a road through which a person or a car passes, and the inside of the form is assembled. After a period of time for casting concrete and curing the concrete, the formwork was dismantled and the soil was backfilled.

[0003] Therefore, it usually takes about one week from excavation of earth and sand to backfilling, and during that time, roads and the like are left as excavated.
It was also dangerous for people, cars and workers on the road. In addition, since it is necessary to cast concrete into the formwork while being excavated, there has been a problem that work is difficult to perform.

[0004] Further, since the conventional formwork is made of a wood panel, there is a problem that the assembling requires skill, and furthermore, the dismantling and disposal work requires a lot of labor.

[0005]

SUMMARY OF THE INVENTION A conventional wood-panel formwork for foundation concrete supporting pillars such as traffic signals and outside lights excavated roads and the like during a period of about one week from assembly to dismantling. It is dangerous because it needs to be left in a state, and it is difficult to cast concrete. Furthermore, with the need for skill in the assembly,
It requires disassembly and disposal work, and requires a lot of labor.
The present invention solves these problems.

[0006]

A description will be given with reference to FIGS. 1 to 11. The formwork structure according to the present invention is a formwork provided in a hole H excavated to form a foundation concrete C for supporting a pillar P of a traffic light, an outside light, etc., and includes a steel plate wave having a plurality of longitudinal grooves 2a. An upper frame 3, a lower frame 4, and a side frame 5 are provided at a peripheral end of the plate 2, and a reinforcing rod 6 is provided horizontally at an intermediate portion to form a single unit 1. Are arranged so as to form a frame body, and the side end frame portions 5 are adjacent to each other at a plurality of locations, at least one of the locations is connected with a hinge 7 and at least another location is connected with a bolt 8, After the assembly is completed, the hole H is buried back before the concrete is poured, and the hole H is buried in the ground.

The single unit 1 is formed in a semi-cylindrical or
/ 3 cylindrical shape, and the shape of the formed frame can be cylindrical. Alternatively, the fixing member 9 may be fixed near the outside of the single unit 1 and the single unit 1 and the fixing member 9 may be connected by the iron bar 10 to which the turnbuckle 11 is attached.

[0008]

1 to 6 show a first embodiment of a mold structure according to the present invention. This is a formwork provided in a hole H dug up on a road to form a foundation concrete C for supporting a pillar P of a traffic light, and is composed of a plurality of single units 1 and the like.

In the single unit 1, an upper end frame 3, a lower end frame 4 and a side end frame 5 are provided at a peripheral end of a steel sheet corrugated plate 2 having a plurality of vertical grooves 2a, and reinforcement is provided at an intermediate portion. The bar 6 is provided horizontally. Then, the plurality of single units 1 are arranged so as to form a quadrangular cylindrical frame body, the side end frame portions 5 are adjacent to each other at four locations, and two opposing locations thereof are joined by hinges 7, and the remaining Are connected to each other with bolts 8. In addition, two reinforcing rods 6 constitute one set, and the clamp 12
Is fixed to the corrugated sheet 2 (FIG. 6).

The upper frame portion 3 is a cap having a U-shaped cross section fitted to the upper end portion of the corrugated plate 2, and the lower frame portion 4 is formed of a runner having the same U-shaped cross section fitted to the lower end portion of the corrugated plate 2. can do. Also, the side end frame portion 5 can be formed into a U-shaped cross section that fits into the side end portion of the corrugated plate 2, or can be formed into a frame shape by simply bending the side end portion. .

This formwork structure is assembled as follows. First, a road is dug up to form a hole H, and the hole H
Then, a so-called throw-out D is placed and a reinforcing bar is assembled at the center as necessary. Subsequently, the mold structure of the present invention is assembled on the disposal container D. In the formwork structure, the two opposing portions are joined by the hinges 7, so that the two single units 1 can be erected in a state of being bent at right angles, and the remaining two portions are joined by bolts 8 in that state. can do. Therefore, the assembling work can be easily performed.

After the assembly of the formwork structure is completed, the hole H
And concrete is poured into the frame in which the pillars P of the traffic light are arranged and cured (the symbol S in FIG. 2 indicates backfilled soil). Therefore, the formwork structure is buried in the ground together with the foundation concrete C without being dismantled and removed.

In this formwork structure, after the assembly is completed, the hole H dug up before the concrete is poured is backfilled, so that the hole H is not left as it is for a long period of time and the workability is improved. Is improved and safe.
That is, (a) Since the backfill is performed immediately after assembling the formwork structure (so-called pre-backfilling is performed), the slope angle D of the hole H needs to be made sufficiently large as in the prior art to prevent landslides. Therefore, the amount of excavated soil can be greatly reduced, and workability is improved. (B) Since the amount of excavated soil can be reduced and the excavated soil is directly used for backfilling the hole H,
There is no need to remove excavated soil to the treatment plant and no need to import new backfill soil from other places. Therefore, workability is improved. (C) Since backfilling is performed, the opening of the hole H is eliminated, and safety is improved.

Further, since the concrete is cast after the hole H is backfilled, the casting operation is easy to perform. Further, since this formwork structure is assembled by connecting the hinges 7 and the bolts 8, the assembling work is easy and no skill is required. In addition, since it is buried as it is without being dismantled, much labor required for disassembly and disposal can be reduced. In addition, since the backing is performed before the concrete is cast, the formwork structure is supported from the entire outside by the backfilled earth and sand, and is not deformed by the pressure of the concrete poured into the frame.

In this embodiment, a fixing member 9 made of an angle material is fixed to a disposal container D near the outside of the single unit 1 with an anchor bolt 13, and the reinforcing rod 6 provided laterally on the single unit 1 The fixing member 9 is connected with two iron bars 10 to which a turnbuckle 11 is attached (FIG. 2).
To FIG. 5). By turning the turn buckle 11, the distance between the two iron bars 10 is reduced, and the single unit 1
To secure it firmly. In addition, since it is pulled by the iron bar 10, it can withstand the pressing force of the earth and sand when the earth and sand is backfilled, and the frame shape can be maintained in the original shape.

A second embodiment of the formwork structure according to the present invention
This is shown in FIGS. In this formwork structure, the shape of the frame body is made cylindrical by forming the single unit 1 into a semi-cylindrical shape, connecting the two unit units 1 with a hinge 7 at one location, and connecting with a bolt 8 at another location. It is in the shape. Note that the hinge 7 is conveniently one whose concave and convex portions are detachable, and may be attached by welding at the site, or may be attached at the factory before being transported to the site. Further, the connection by the bolt 8 is performed by attaching a flange 8b to the side end frame portion 5 of the single unit 1 by welding at a site or a factory, and inserting the bolt 8 into a hole formed in the flange 8b.
And fixed by a nut 8a (see FIG. 10).

Although the single unit 1 in the present embodiment has a semi-cylindrical shape, it may be formed into a 1/3 cylindrical shape, and a cylindrical frame may be formed by assembling three single units 1. In such a case, the hinges 7 may be connected at two places, and the remaining one may be connected by bolts 8 or vice versa. The number of reinforcing rods 6 provided in the single unit 1 is not limited (see FIG. 11).

Since this cylindrical frame is formed by a single unit 1 divided into two or three, the size can be greatly reduced especially when the frame has a large diameter. Can be reduced. It should be noted that the formwork structure having the cylindrical frame body can also be used for the preceding backfill method.

[0019]

According to the formwork structure of the present invention, after the assembly is completed, the hole H dug up before the concrete is poured is backfilled, so that the hole H is left as it is for a long time. There is no. Therefore, it is safe for those who pass around the vehicle, those who drive or those who work there. Moreover, since the concrete is cast after the holes H are backfilled, the casting operation can be easily performed, and the working efficiency can be improved.

Further, the formwork structure includes a hinge 7 and a bolt 8
, The assembly is easy, and no skill is required. In addition, since it is buried as it is without being disassembled, much labor required for disassembly and disposal can be reduced, and the manufacturing cost can be reduced.

Further, since the single unit 1 is pulled by the iron bar 10, it can withstand the pressing force of the earth and sand when backfilling the earth and sand, and can maintain its frame shape in its original shape. Further, since the backing is performed before the concrete is cast, the formwork structure is supported from the entire outside by the backfilled earth and sand, and is not deformed by the pressure of the concrete poured into the frame.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a first embodiment of the present invention.

FIG. 2 is a partial side view of the embodiment shown in FIG.

FIG. 3 is a partial front view of the embodiment shown in FIG.

FIGS. 4A and 4B are a side view and a front view showing a fixing member of the embodiment in FIG.

FIG. 5 is a side view showing an assembly part of the iron bar and the reinforcing bar of the embodiment in FIG.

FIG. 6 is a side view showing the reinforcing rod of the embodiment in FIG.

FIG. 7 is a front view showing a second embodiment of the present invention.

FIG. 8 is a plan view showing the embodiment in FIG. 7;

FIG. 9 is a front view showing a hinge portion in the embodiment in FIG. 7;

FIG. 10 is a plan view showing a bolt portion in the embodiment in FIG. 7;

FIG. 11 is a front view showing the types of the single unit of the embodiment in FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Single unit 2 Corrugated plate 2a Vertical groove 3 Upper frame part 4 Lower frame part 5 Side end frame part 6 Reinforcement rod 7 Hinge 8 Bolt 8a Nut 8b Flange 9 Fixing member 10 Iron rod 11 Turnbuckle 12 Clamp 13 Anchor bolt P Support S Filling Return soil C Basic concrete D Discard concrete H Hole D Slope angle

Claims (3)

[Claims] 1. A formwork provided in a hole (H) dug up to form a foundation concrete (C) for supporting a pillar (P) of a traffic light, an outdoor light, etc., wherein a plurality of vertical grooves (2a) are provided. The upper end frame part (3), the lower end frame part (4) and the side end frame part (5) are provided at the peripheral end of the steel sheet corrugated plate (2) having the reinforcing plate (6) in the middle part. To form a single unit, and a plurality of single units are arranged so as to form a frame, and the side end frame portions are adjacent to each other at a plurality of positions, and at least one of them is connected by a hinge (7). A formwork structure in which at least one other portion is connected by bolts (8), and after the assembly is completed, the hole is backfilled and buried in the ground as it is before casting concrete. 2. The single unit (1) is formed in a semi-cylindrical or
3. The mold structure according to claim 1, wherein the shape of the frame body is cylindrical. 3. A fixed member (9) is fixed near the outside of the single unit (1), and the single unit and the fixed member are connected by an iron bar (10) to which a turnbuckle (11) is attached. Or the mold structure according to 2.