JPH0959999A - Split type form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide split type forms, in which manufacturing cost is not increased by simple constitution while workability at the time of foundation execution is improved and which have excellent durability. SOLUTION: Split type forms have two split members 60, 61 divided in the circumferential direction. When both split members 60, 61 are assembled, abutting surfaces 70, 71 are abutted mutually. Two triangular engaging sections 64 in a front view are formed integrally to the abutting surface 70 of one split member 60. The upper edge surface 64a of the engaging section 64 is formed in an inclined tapered shape fitted to a dovetail groove. A triangular hole section 66, into which the engaging section 64 can be inserted, in the front view is formed to the abutting surface 71 of the other split member 61. The upper wall surface 66a of the hole section 66 is formed in the inclined tapered shape in a dovetail groove shape in response to the upper edge surface 64a of the engaging section 64.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork that can be used as a frame for a foundation, and particularly to support equipment such as an air conditioner and a boiler for supporting a pipe support frame used in air conditioning equipment and the like. The present invention relates to a split formwork suitable for installing a foundation made of a filler such as mortar or concrete for installation.

[0002]

2. Description of the Related Art As a mold of this type, there are several examples as described below. (1) As shown in FIG. 15, two thick divided blocks 41 and 42 (made of concrete, for example) are assembled by vertical engagement and the hollow portion 43 is filled with concrete (special feature). See Japanese Patent Application No. 2-41204).

(2) As shown in FIG. 16, an opening 44 for pouring concrete is formed on the upper surface side, and the bottom surface 45 side is integrally molded as a desired cornerstone peripheral surface shape. 116538).

(3) As shown in FIG. 17, a cylindrical form body 47, which forms a concrete placing space 46 inside,
A connecting portion, which is formed on the dividing members 47A and 47B divided into two in the circumferential direction and engages and connects the dividing edge portions 48 of the dividing members 47A and 47B, is formed on the dividing members 47A and 47B.
Concrete formwork (actual fair 6-4498) formed from an engaging convex portion 49b and an engaging concave portion 49a which can be fitted into and disengaged from each other only by relative movement of the cylinder axial direction.
No. 9).

(4) As shown in FIG. 18, a connecting body 51 made of a plastic material and forming a side plate of the formwork is connected to each other by a joint 52 to form a frame-like formwork. . The joint 52 is provided with an insertion piece 52A and a locking hook 52B on the divided side edge of the connection body 51.
The insert piece 52A is inserted into the insert recess 52a at the divided side edge of the opposing connecting body 51, and the engaging hook 52B is provided.
Is to engage and connect with the engaging holes 52b provided in the divided side edges of the connecting body 51 which are also opposed to each other (actual open flat 6-5).
6148).

[0006]

However, the above-mentioned conventional molds have the following problems, respectively. That is, the type (1) has an advantage that the manufacturing cost does not increase because the structure is simple, but it is heavy because it is made of concrete and has a heavy weight. However, there is a problem that the workability at the time of foundation construction is poor because the heavy block must be lifted up so as not to overlap the other block.

The type (2) is an integrated type. For example, in order to install a concrete foundation for a pipe support frame, a formwork is installed in advance before constructing this frame, and then the frame is mounted. It is installed and used. However, if the user forgets to install the formwork, he has to lift the constructed frame before installing the formwork, which is a very troublesome work.

The item (3) is similar to the item (1),
At the time of assembly, one of the divided members has to be lifted above the other divided member, which causes a problem of poor workability during foundation construction. Further, since the connecting portion, that is, the engaging convex portion and the engaging concave portion are bent in a plurality of complicated shapes, the manufacturing cost increases, and the strength of the connecting portion is low and the durability is low.

Since the item (4) has a complicated structure and shape such as the inserting piece, the inserting recess, the engaging hook and the engaging hole, the cost is high and the durability is the same as the item (3). There is a problem that it is low.

The present invention has been made in view of the above-mentioned problems of the prior art. The manufacturing cost is reduced with a simple structure, the durability is improved, and the workability during foundation construction is also improved. The purpose of the present invention is to provide a split formwork.

[0011]

DISCLOSURE OF THE INVENTION The present invention for achieving the above-mentioned object is a cylindrical frame body which forms a space filled with a filler on the inner side, and is divided into at least two circumferential frames.
In a split mold having two or more split members, and both side edges of the adjacent split members being a connecting portion capable of engaging and connecting with each other, both split members at the connecting portion contact each other. A hole portion is formed in the contact surface of one of the split members, and a hole is formed in the contact surface of the other split member. A locking portion that can be inserted into the portion and that can be locked around the hole portion is provided in a protruding manner.

Further, a plurality of the holes are provided in the one division member, and correspondingly, the other division member is provided with
A plurality of locking portions that are locked in the respective hole portions are provided. Further, the dividing member may be made of metal or synthetic resin.

The operation of the present invention will be described below. According to the first aspect of the invention, at the time of assembling the split mold, both split members are placed on a predetermined floor surface with their contact surfaces facing each other. In this state, one of the split members is slightly raised so that the holes and the locking portions face each other,
Here, one split member is horizontally moved to the other split member side to insert the locking portion into the hole. Here, one of the split members is moved downward. As a result, one of the split members descends and is placed on the floor surface. In this state, the locking portion is locked at the peripheral portion of the hole, and the split members are engaged in the circumferential direction. . Mortar (or concrete), which is a filler, is poured into the hollow portion inside the assembled split formwork thus assembled. At this time, in the adjacent division members, the contact surfaces of the connecting portions come into contact with each other, and the contact surfaces of the connecting portions do not separate due to the engagement of the locking portion and the hole portion, and as a result, the filler is removed from the connecting portions. It doesn't leak.

Further, the engagement strength of the connecting portion is increased by providing a plurality of locking portions and a plurality of holes, respectively. further,
By forming the dividing member from metal, it can be formed by bending or punching. Further, since the dividing member is made of synthetic resin, it is lightweight and can be integrally molded by injection molding with high productivity.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. The split formwork of the present embodiment is used, as an example of a usage pattern, when constructing a foundation for supporting a stand on which a pipe cover is mounted.
For example, on the rooftop of a building, many air-conditioning pipes are installed to connect the outdoor and indoor units of the air-conditioning equipment, and in order to protect these from wind and rain, direct sunlight, salt damage, etc. The pipes of the book are covered together by a pipe cover.

FIG. 12 shows an example of a pipe cover.
The pipe cover (pipe duct) 1 covers and accommodates a plurality of air conditioning pipes 1a, and is supported by, for example, a plurality of mounting bases 2 installed on the rooftop of a building. As shown in FIGS. 12 to 14, each of the mounting bases 2 includes a plurality of (two in the drawing) leg portions 3, and these leg portions 3 are
It is fixed to the floor surface 5 of the roof of the building through the mortar foundation 4 formed by the split form K of the present invention described later.

Thus, the mortar foundation 4 is constructed by the split type mold K (see FIGS. 13 and 14) of the present invention, and the split type mold K will be described below. In FIG. 14, reference numeral 5a indicates a chipping formed by crushing the floor surface 5 in advance before the foundation construction in order to increase the surface area of the floor surface 5 and increase the frictional force with the mortar foundation 4. There is.

FIG. 1 is a plan view (top view) after assembly of the split formwork of the present invention, showing a state in which a filler (mortar) is not injected, and FIGS. 1B is a perspective view and a front view of the connecting portion of one of the split members in FIG. 1, and FIGS. 3A and 3B are perspective views and a front view of the connecting portion of the other split member in FIG. 1, respectively. 4 (a) and 4 (b) are cross-sectional views of the connecting portion of the split mold of FIG. 1 before and after assembly, respectively.

As shown in FIGS. 1 and 2, the split form K has a tubular frame body having a rectangular shape in a top view, which forms a hollow portion S filled with a filler (concrete, mortar, etc.) inside. And, it is provided with two dividing members 60, 61 divided in the circumferential direction. Both side edge portions (coupling portions) 60a and 60b of one division member 60 and both side edge portions (coupling portions) 61a and 61b of the other division member 61 are engaged and connected to each other. Connection parts 60a, 60b, 61a, 6
1b will be described later. Flange portions 62 and 63 that spread outward are provided at the lower ends of the split members 60 and 61, respectively, so that the stability of the split mold K during installation is high. In addition,
The split-type mold K is not limited to one that is divided into two as in the present embodiment, and may be one that is divided into a plurality of three or more. The dividing members 60 and 61 are integrally molded of, for example, a synthetic resin material by injection molding, and have excellent productivity.

Here, the connecting portion 60 of one of the split members 60
a, 60b, and the connecting portion 61 of the other split member 61
The detailed structure of a and 61b will be described. 2 to 4
As shown in FIG.
The end surface of 60b is a contact surface 70, and the end surface of the other split member 61 is also a contact surface 71. At the time of assembling the split members 60, 61, the contact surfaces 70, 71
Touch each other.

As shown in FIGS. 2 and 4, two abutment surfaces 70 of one of the split members 60 are provided with two engaging portions (projections) 64 and 65 each having a triangular shape in a front view. They are integrally formed at intervals in the depth direction. The locking portion 6
The two upper edge surfaces 64a and 65a of 4, 65 are
It is formed in a tapered shape so as to fit with a tapered surface of a dovetail groove described later.

As shown in FIGS. 3 and 4, in the contact surface 71 of the other split member 61, two holes 66, 6 having a triangular shape in a front view, into which the locking portions 64, 65 can be inserted, respectively.
7 are formed at intervals in the height direction of the dividing member 61. The size of the holes 66 and 67 as viewed from the front is determined by the engagement portion 6.
It is slightly larger than that of 4,65. Two upper wall surfaces 66a and 67a of the holes 66 and 67, respectively.
Corresponds to the upper edge surfaces 64a and 65 of the locking portions 64 and 65, and is formed in a tapered shape inclined in the depth direction of the hole portions 66 and 67. That is, the two upper wall surfaces 66a, 67a of the holes 66, 67 are dovetail wall surfaces.

Next, using the split form K of this embodiment,
Mortar foundation construction as an example of foundation construction will be described with reference to the drawings. As shown in FIGS. 13 and 14, only the portion of the rooftop floor 5 of the building on which the mortar foundation 4 is to be crushed is previously crushed to form the chipping 5a, thereby increasing the surface area. After the legs 3 of the gantry 2 are installed on the floor surface 5, the split members 60, 61 are attached to their contact surfaces 7
0, 71 are placed on the floor surface 5 so as to face each other and cover the lower part of the leg portion 3.

Then, as shown in FIG. 4A, the other divided member 61 is provided with respect to the one divided member 60, and the holes 66 and 67 of the divided members 61 engage the engaging portions 64 and 6 of the one divided member 60.
Lift up to the position facing 5. Further, as shown by the arrow X, the other split member 61 is replaced by the other split member 60.
Then, the locking portions 64 and 65 are inserted into the holes 66 and 67, respectively. Here, by separating (or moving downward) the other dividing member 61, the other dividing member 61 is lowered as indicated by an arrow Y to move to the floor surface 5 (see FIG. 1).
(See 3). In this state, as shown in FIG. 4B, the tapered upper edge surfaces 64a, 64a of the locking portions 64, 65,
65a is a taper surface 66 of each of the holes 66 and 67.
A and 67a are engaged in a dovetail type. Further, the upper end surface and the lower end surface of both the split members 60, 61 are flush with each other. As described above, the split members 60 and 61 are firmly engaged with each other in the circumferential direction (the arrow X direction). In particular, in this embodiment, since a plurality of locking portions and a plurality of holes are provided, the engagement strength is high.

A mortar (which will later become a mortar foundation) 4 is poured into the mortar filling space which is the hollow portion S, whereby the lower end portion of the leg portion 3 is buried. At this time, since the abutting surfaces 70, 71 of the adjacent division members 60, 61 are in close contact with each other at the connecting portions 60a, 60a and the connecting portions 61a, 61b, the mortar 4 does not leak from the connecting portions.

As described above, in this embodiment, since the structure is simple, the manufacturing cost does not increase. Further, at the time of foundation construction, it is not necessary to lift the other split member upward with respect to the one split member, and the lifting position may be a position where the locking portions and the holes of both split members overlap. Good workability during construction. Furthermore, at the time of foundation construction, after installing the pedestal with the piping cover installed, the split formwork is installed, so if you forget to install the formwork as in the past, lift the installed pedestal and install it. There is no need for extremely troublesome work such as doing. Further, since the structure of the connecting portion is simple, the connecting portion is less likely to be damaged and has excellent durability.

FIG. 5 is a plan view (top view) of another embodiment of the split mold of the present invention after assembly, in which a filler (mortar) is used.
6 shows a state in which the liquid is not injected, FIG. 6 is a front view of FIG. 5, FIG. 7 is an enlarged view of the connecting portion of FIG. 5, FIG. 8 is a view taken in the direction of arrow C of FIG. 7, and FIG. 7 is a sectional view taken along line AA of FIG.
[Fig. 3] is a sectional view corresponding to (a) before assembling of the split mold.

As shown in FIGS. 5 and 6, the split form K has a tubular frame body having a rectangular shape in a top view, which has a hollow portion S filled with a filler (concrete, mortar, or the like) inside. And, it is provided with two dividing members 6 and 7 divided in the circumferential direction. Both side edges 9 of one of the split members 6
a, 9b and both side edge portions 12a, 12b of the other split member 7
The two are engaged and connected to each other (connecting portion 8a,
8b). The connecting portions 8a and 8b will be described later. The split form K may be divided by a dividing line indicated by M, and is not limited to being divided into two as in the present embodiment, and is also divided into a plurality of three or more. You can also use it. In this embodiment, the height dimension H of the dividing members 6 and 7,
The length dimension W and the width dimension B are 100 to 120, respectively.
mm, 200 mm, and 100-150 mm
It is about.

The dividing members 6 and 7 are made of a metal such as an iron plate or a stainless plate and are thin (for example, the plate thickness is about 1 mm).
The plate is formed by sheet metal working such as bending and punching. This makes it easy to manufacture and lightweight. Further, the dividing members 6 and 7 may be integrally molded of a synthetic resin material by injection molding. In this case, the productivity is also excellent.

The split members 6 and 7 are provided at their lower ends with folding portions 15 and 16 which are bent outward at a right angle, respectively, and thereby, stability during installation is good. Further, the split members 6 and 7 are provided at their upper ends with folding portions 17 and 18 which are bent inward at right angles. The folding portion 1 is provided on the connecting portions 8a and 8b of the dividing members 6 and 7.
There are no 5,16,17,18. The folding part 15,
16 width width h ₁ of the dimension h ₂ and folding portions 17 and 18 of the is adapted to respectively about 10 mm.

Here, the detailed structure of the connecting portions 8a and 8b will be described. Both side edges 9a and 9b of one of the split members 6
Is bent inward at a right angle and the folding pieces 10a, 10
b are formed respectively. Both side edges 12a and 12b of the other split member 7 are also bent inward at right angles to form folding pieces 13a and 13b, respectively.

Since the connecting portions 8a and 8b have the same structure, one connecting portion 8a will be described in detail with reference to FIGS. The outer peripheral surface of the folding piece 10a of the side edge portion 9a of the dividing member 6 is the contact surface 19, while the outer peripheral surface of the folding piece 13a of the side edge portion 12a of the dividing member 7 is the contact surface 20. There is. When the two split members 6 and 7 are assembled, the contact surfaces 19 and 20 contact each other.

In the folding piece 10a of one of the division members 6, three rectangular holes 23a, 23b, 23c are formed at equal intervals in the height direction of the division member 6. These holes 23a, 23b, 23c can be easily formed by punching.

In the folding piece 13a of the other dividing member 7, three engaging portions 21a, 21b, 21c which can be inserted into the holes 23a, 23b, 23cb, respectively, are arranged at equal intervals in the height direction of the dividing member 7. Is formed in. Since these three locking portions 21a, 21b and 21c have the same structure, one locking portion 21a will be described. The folding piece 13a is punched in a U shape, the root of the punched portion is bent outward at a right angle, and the middle portion is bent inward at a right angle. As a result, the shape of the locking portion 21a is a rectangular shape and a reverse L shape in a front view and a side view, respectively. The gap D between the locking portion 21a and the folding piece 13 is equal to the gap 10a on the mating side.
The thickness of the locking portion 21a is slightly larger than the thickness of the hole 23 of the folding piece 10a as shown in FIG. 9 (a).
It is adapted to be locked to a peripheral portion 24a of the lower side of a. In FIGS. 8 and 9, reference numerals 22a, 22a
Reference numerals 2b and 22c indicate punching lines when the locking portions 21a, 21b and 21c are punched and bent.

Next, using the split form K of this embodiment,
Mortar foundation construction as an example of foundation construction will be described with reference to the drawings.

Both split members 6, 7 are placed on the floor surface 5 (see FIG. 13) so that their contact surfaces 19, 20 face each other. Then, as shown in FIG. 9 (b), one of the divided members 6 is provided with the other divided member 7, and the engaging portions 21 a, 21 b, 21 c of the divided members 6 have holes 23 a, 23 b of the one divided member 6, respectively. Lift up to a position facing 23c. Further, as shown by the arrow X, the other split member 7 is
By moving to one of the split members 6 side, the locking portions 21a, 21
b and 21c are inserted into the holes 23a, 23b and 23c, respectively. Here, by separating (or moving downward) the other dividing member 7, the other dividing member 7 is lowered as shown by the arrow Y and placed on the floor surface 5 (see FIG. 13). In this state, the locking portions 21a, 21b, 21c are
The holes 23a, 23b, and 23c are engaged with the lower peripheral portions (lower peripheral portions) 24a, 24b, and 24c in the arrow X direction (see FIG. 9A). Further, the upper surface and the lower surface of both split members 6 and 7 are flush with each other. As described above, the two split members 6 and 7 are firmly engaged in the circumferential direction (the arrow X direction). In particular, in this embodiment, since a plurality of locking portions and a plurality of holes are provided, the engagement strength is high.

A mortar (which will be a mortar foundation later) 4 is poured into the mortar filling space which is the hollow portion S, and thereby the lower end portion of the leg portion 3 is buried. At this time, the adjacent split members 6 and 7 are brought into contact with each other at the contact surfaces 19 and 20 in the connecting portions 8a and 8b, so that both the folding pieces 10a and 10b.
Also, the two folding pieces 13a and 13b are engaged with each other, the contact surfaces 19 and 20 are not separated, and the mortar 4 does not leak from the connecting portions 8a and 8b. After the mortar 4 is hardened, the folding pieces 10a, 10b, 13a, 13b are fixed to the mortar 4.
The split form K does not come off the mortar foundation 4.

As described above, in this embodiment, since the structure is simple, the manufacturing cost does not increase, and the weight is reduced because it is made of a thin metal plate. Further, at the time of foundation construction, it is not necessary to lift the other split member upward with respect to the one split member, and the lifting position may be a position where the locking portions and the holes of both split members overlap. Good workability during construction. Furthermore, at the time of foundation construction, after installing the pedestal with the piping cover installed, the split formwork is installed, so if you forget to install the formwork as in the past, lift the installed pedestal and install it. There is no need for extremely troublesome work such as doing. And
Since the structure of the connecting portion is simple, the connecting portion is less likely to be damaged and has excellent durability.

In each of the above embodiments, the holes and the locking portions are arranged side by side in the height direction of the dividing member. However, the present invention is not limited to this, and only one hole and one locking portion are provided. Alternatively, a plurality of holes and locking portions may be provided in the width direction of the split member.

Further examples of the split formwork of the present invention include the following. As shown in FIGS. 10 and 11, both the split members 30 and 31 are integrally injection-molded from synthetic resin, and have a thicker wall than that of FIG. Further, the folding end is not provided, and the abutting end surfaces of the split members 30 and 31 are contact surfaces 30a and 31a. In addition, the alternate long and short dash line P in FIG. 11B indicates a parting line of the mold at the time of injection molding of the respective divided members 30 and 31. The contact surface 31a of the division member 31 is formed with a hole 34 having a rectangular shape and a substantially inverted L shape in a front view and a side cross section, respectively, while the contact surface of the division member 30 is provided with the hole portion 34. Can be inserted into the front and side views are rectangular and inverted L, respectively.
A character-shaped locking portion 33 is integrally provided so as to project. Unlike the example of FIGS. 2 to 4, the wall surface of the locking portion 33 does not form an inclined surface and rises vertically. In addition,
The divided members are not limited to those integrally formed by injection molding, and holes or locking portions may be separately formed in the divided members.

Further, the outer portion of the lower wall surface of the hole 34 projects upward to form a lower wall projecting piece (lower peripheral portion) 34a, and the gap F between the locking portion 33 and the contact surface 30a is the above-mentioned. It is slightly larger than the thickness E of the lower wall protrusion (lower peripheral portion) 34a. Further, when the split members 30 and 31 are assembled, the locking portion 33 is supported by abutting against the lower wall projecting piece (lower peripheral portion) 34a of the hole portion 34. As a result, FIG.
The stability at the time of engagement is improved as compared with the one described above. Other configurations are the same as those of the split formwork shown in FIGS. 5 to 9.

During assembly of the split formwork of this embodiment, both split members 30, 31 are brought into contact with their abutment surface 30.
Floor so that a and 31a face each other (see FIG. 13)
put on top. Then, as shown in FIG. 11B, one split member 31 is attached to the other split member 30, and the locking portion 3 is attached.
3 is lifted to a position facing the hole 34. Further, the other split member 30 is moved to the one split member 31 side as shown by the arrow X, and the locking portion 33 is inserted into the hole portion 34. Here, by separating (or moving downward) the other dividing member 30, the other dividing member 30
Is lowered and placed on the floor surface 5 (see FIG. 13) as indicated by arrow Y. In this state, the locking portion 33 is locked to the lower wall protrusion 34a of the hole 34 in the arrow X direction (see FIG. 11A). As a result, both split members 30, 3
1 is firmly engaged in the circumferential direction (direction of arrow X).

In each of the above-described embodiments, the shape of the engaging portion and the hole portion when viewed from the front is shown as a triangular shape or a rectangular shape, but the shape is not limited to this and may be a circular shape or a circular shape.

[0044]

Since the present invention is configured as described above, it has the following effects. According to the invention described in claim 1, since the structure of the connecting portion is simple, the manufacturing cost of the divided member is significantly reduced, and
Also has excellent durability of the connecting part. Further, the workability of assembling the formwork at the time of foundation construction is also improved. According to the second aspect of the present invention, the engaging strength of the dividing member is increased, and it is possible to reliably prevent the dividing member from being disengaged at the connecting portion due to the pressure of the filler. According to the invention described in claim 3, the divided member can be easily manufactured by sheet metal working, and is excellent in durability after construction. According to the invention described in claim 4, it is possible to produce a large number of lightweight split-type molds by injection molding.

[Brief description of drawings]

FIG. 1 is a plan view (top view) after assembly of a split mold according to the present invention, showing a state in which a filler (mortar) is not injected.

2A and 2B are a perspective view and a front view of a connecting portion of one of the split members in FIG. 1, respectively.

3 (a) and 3 (b) are respectively a perspective view and a front view of a connecting portion of the other split member in FIG.

4 (a) and 4 (b) are cross-sectional views of a connecting portion of the split mold of FIG. 1 before and after assembling, respectively.

FIG. 5 is a plan view (top view) of another embodiment of the split formwork of the present invention during assembly, showing a state in which mortar is not injected.

FIG. 6 is a front view of FIG. 5;

FIG. 7 is an enlarged view of the connecting portion of FIG.

FIG. 8 is a view on arrow B of FIG. 7.

9A is a cross-sectional view taken along the line AA of FIG. 7, and FIG. 9B is a cross-sectional view before assembly of the split mold, corresponding to FIG.

FIG. 10 is a plan view of a connecting portion according to still another embodiment of the present invention.

11A is a cross-sectional view taken along the line GG of FIG. 10, and FIG. 11B is a cross-sectional view before assembly of the split mold, corresponding to FIG.

FIG. 12 is a perspective view of a mounting base before foundation construction.

FIG. 13 is a side view of a mounting base after foundation construction.

14 is a sectional view of the foundation of FIG.

FIG. 15 is a perspective view of a conventional mold.

FIG. 16 is a perspective view of another conventional mold.

FIG. 17 is a view showing still another conventional formwork.

FIG. 18 is a perspective view of yet another conventional formwork before assembly.

[Explanation of symbols]

S Inside (hollow part) K Dividable formwork 1 Piping cover (piping duct) 1a Air conditioning piping 2 Mounting stand 3 Legs 4 Basic mortar (mortar) 5 Floor 5a Chipping 6,7 Dividing members 8a, 8b Connecting part 9a , 9b, 12a, 12b Side edge portions 10a, 10b, 13a, 13b Folding pieces 15, 16, 17, 18 Folding portions 19, 20, 30a, 31a Abutting surfaces 21a, 21b, 21c, 33 Locking portions 22a, 22b , 22c punching line 23a, 23b, 23c, 34 hole part 24a, 24b, 24c lower peripheral part 34a hole lower wall projecting piece 60, 61 dividing member 60a, 60b, 61a, 61b connecting part (side edge part) 62, 63 flange portion 64,65 locking portion 64a, 65a upper edge surface 66, 67 hole portion 66a, 67a upper wall surface 70, 71 contact surface

Claims (4)

[Claims] 1. A tubular frame body that forms a space filled with a filling material inside, comprising at least two or more dividing members divided in the circumferential direction, and both side edges of adjacent dividing members. In the split formwork in which the parts are connection parts that can be engaged and connected to each other, in the connection part, both of the split members each have an abutting surface that abuts each other, and one of the both split members. A hole is formed in the contact surface of the split member, and the contact surface of the other split member can be inserted into the hole of the one split member and can be locked to a peripheral portion of the hole. Split formwork, characterized in that various locking parts are projected. 2. The one division member is provided with a plurality of the hole portions, and correspondingly, the other division member is provided with a plurality of locking portions that are respectively engaged with the respective hole portions. The split formwork according to claim 1. 3. The split mold according to claim 1, wherein the split member is made of metal. 4. The split mold according to claim 1, wherein the split member is made of synthetic resin.