JPH10196022A - Concrete form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete form capable of reducing labor and cost for a form installation and demolition work as a whole. SOLUTION: A sheathing board as a heat insulating material is protected, with the ends thereof covered with walling frames 4 and 6, and a pad, while almost no nail or the like being used. Also, a separator 7 is fixed to the walling frames 4 and 6, and not to the sheathing board, thereby almost eliminating surface damages to a hole or the like, and the exposure of a nail or the like can be eliminated for ensuring high safety and improving surface quality. According to this construction, labor to repair a heat insulating material can be eliminated and the heat insulating material can be easily attached to and detached from the walling frames 4 and 6. At the same time, a form 1 can be easily installed and demolished, thereby improving work efficiency. Furthermore, when the walling frames 4 and 6 are jointed to each other with clips 8, a tongue and a groove, or the like hardly appear. In addition, skill is not required, and a construction period can be shortened, together with the reduction of labor cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete formwork for holding concrete to be poured into a predetermined mold.
In particular, the present invention relates to a concrete formwork in which a heat insulating material is disposed inside a concrete wall to construct a heat insulating and dew-proof wall.

[0002]

2. Description of the Related Art A concrete formwork which is used when concrete is poured into concrete or a reinforced concrete structure and protects the concrete until it hardens after the concrete is poured is mainly composed of a dam plate which directly supports the concrete to be poured. It consists of a shoring that supports the weir. In addition to plywood and steel plate,
Wooden panels and steel panels (metal foam) with boards reinforced by stiles and middle crosspieces are used. Square timbers (ends), pipes, and section steels are used as supports. Further, a separator is provided between the dams so as to keep an interval between the dams disposed facing each other with the concrete casting portion therebetween.

On the other hand, in order to make the concrete wall a heat insulating and dew-proofing wall, a plate-shaped heat insulating material has been conventionally provided on the inner surface of the concrete wall. In general, this heat insulating material is disposed integrally when casting concrete, and is mainly disposed as a formwork integrally with a plywood supporting concrete as a weir and a heat insulating material. There are two conventional methods: removing only the plywood after casting and leaving the heat insulating material on the concrete surface, and using the heat insulating material as a dam and constructing the formwork and leaving it without removing the heat insulating material after casting. It was done.

FIG. 11 shows an example of the former formwork as the concrete formwork in which such a conventional heat insulating material is provided. FIG. 11 is a schematic configuration diagram of a conventional concrete formwork.

[0005] In Fig. 11, a conventional concrete formwork 100 uses a plywood panel 110 which is a dam for directly supporting the concrete to be poured and an aluminum end which is a support for supporting the dam from outside. Pier (vertical end) 1
Both ends are screwed to a plywood panel 110 which is disposed opposite to a plywood panel 110 which is disposed opposite to the outer pier 20 and the outer bar (wide end) 130 with the concrete casting portion interposed therebetween. Separator 14 that keeps the distance between
0 is mainly provided. This plywood panel 110
In order to prevent bending in the vertical direction, both ends are hit with a nail 160 on a wooden columnar pier 150, and several
20 is provided at the intermediate portion sandwiched between the crosspieces 150 to reinforce it. The pier 150 is also used for connection, and the plywood panels 110 are made laterally continuous by hitting the piers 140 adjacent to each other with nails 160. A plate-like heat insulating material 170 is integrally attached to the plywood panel 110 constituting the frame on the inner side of the wall on the concrete casting side, and the plywood panel 110 and the heat insulating material 170 are separated from each other when the form is dismantled after the casting. In this way, the heat insulating material 170 is provided on the concrete surface.

In order to install the concrete formwork 100 having the above-described structure, first, a heat insulating material 170 is attached to the plywood panel 110 with an umbrella nail 180 in advance, and the pier 15 at the end is placed along the driving position.
0 are fixed to each other with nails 160 to build a plurality of inner frames. Then, a separator 140 with a pad is attached to an intermediate portion of each plywood panel 110. afterwards,
Form tie (registered trademark) 19 for attaching a shoring
0, the vertical middle rail 120 and the horizontal outer rail 13
0 and securely support it. The wall outer frame on the opposite side of the cast portion is also erected in a state where the heat insulating material 170 is omitted, and the other end of the separator 140 is attached so as to maintain a predetermined interval, thereby forming the foam tie 190 and the middle rail. 120 and the outer bar 130 are attached and securely supported.

[0007] For dismantling and removing the formwork after placing the concrete, the parts other than the plywood panel 110 to which the heat insulating material 170 is attached are removed in the reverse order, and then the heat insulating material 170 and the plywood panel 110 attached to the concrete surface are pulled. Release, insulation 17
It is assumed that only 0 remains. On the surface of the heat insulating material 170, the tip of the umbrella nail 180 appears, and a hole through the end of the separator 140 remains.

Further, as another example of a concrete formwork in which a conventional heat insulating material is provided, FIGS. 12 to 14 show the latter formwork. FIG. 12 is a schematic diagram of another conventional concrete form, FIG. 13 is an explanatory view of the front and back sides of a heat insulating board of another conventional concrete form, and FIG. 14 is a state after disassembly of another conventional concrete form. It is a wall inside state explanatory drawing.

In each of the above figures, a conventional concrete formwork 200 comprises a heat insulating board 210 and a plywood panel 220 made of a heat insulating material, which is a dam for directly supporting the concrete to be poured, and an aluminum support, which supports these from outside. Middle bar (vertical bar) 230 and outer bar (horizontal bar)
240 and a separator 250 which is screwed at both ends to a heat insulating board 210 and a plywood panel 220 which are disposed to face each other with a concrete casting portion interposed therebetween, and which is disposed in the middle thereof, and which keeps a space therebetween. It is a configuration provided. As in the former case, the heat-insulating board 210 has a wooden pier 260 with umbrella nails 27 at both ends to prevent bending in the vertical direction.
In addition to hitting at 0, several middle bars 230 are arranged at the intermediate portion between the bars 260 to reinforce. Pier 260
Are also used for connection, and the thermal insulation board 210 is made continuous horizontally by hitting the adjacent piers 260 with nails 280.

[0010] The concrete form 200 having the above-described structure is installed by attaching the pier 260 to the end of the heat insulating board 210 by the umbrella nail 27.
0, and a plurality of piers 260 at the end are fixed along with the nails 270 along the driving position to be built into a wall inner frame. Then, a separator 250 with a pad is attached to an intermediate portion of each heat insulating board 210. After that, a foam tie 290 for attaching a shoring is attached, and a vertical middle rail 230 and a lateral outer rail 240 are attached and securely supported. The outer frame on the opposite side across the cast portion is also erected in the same manner as described above, replacing the heat insulating board 210 with the plywood panel 220, and attaching the other end of the separator 250 to maintain a predetermined interval to form the foam tie 290 or the middle. The bar 230 and the outer bar 240 are attached and securely supported.

After the casting, the mold is removed from the heat insulating board 21.
0 is removed in order, and the pier 260
Are separated, leaving only the heat insulating board 210 on the concrete surface. An umbrella nail 2 is provided on the surface of the heat insulating board 210.
In addition to the appearance of the tip of 70, a hole through the end of the separator 250 remains, so repairing or finishing is performed. The insulation board 210 used as a weir board is lightweight and easy to carry, and its size can be easily processed and adjusted according to the construction at the site. Therefore, it can respond immediately to design changes, etc., and has high flexibility and workability. Excellent.

[0012]

Since the conventional concrete formwork has been constructed as described above, when the former is a plywood panel 110 in which the heat insulating material 170 is arranged inside the plywood panel 110, the cough is coughed. Separator 1 to keep the space between plates
It is necessary to make a plurality of holes for passing the 40 screw portions in the plywood panel 110 and the heat insulating material 170, and it is necessary to repair the holes formed in the heat insulating material 170 later, which is inferior in quality and takes time. Had issues. In addition to this, since the plywood panel 110 is used in combination, it takes time and effort to attach the heat insulating material 170 to the plywood panel 110 and to remove the plywood panel 110 after casting, which is not excellent in workability and leads to an increase in cost. Had issues. Furthermore, plywood panel 1
When the mold 10 is used several times as a mold, in addition to the above-mentioned holes, it gradually peels off from the end and breaks, so that it is difficult to hold the original shape, it is difficult to use the mold many times, and frequent replacement is required, and cost is reduced. Had the problem of being disadvantageous to

Further, the latter, a heat insulating board 2 as a weir board.
When using 10, the plywood panel 220 is not used for the inner wall of the wall on which the heat insulating board 210 is arranged, and although the workability is improved, the holes through which the threaded portions of the separator 250 maintain the interval between the dams are provided. In addition to the necessity of perforating the heat insulating board 210, it is necessary to attach and remove the crosspiece 260 to and from the heat insulating board 210. There was a problem that it would go wrong.

Further, in any of the above cases, a plywood panel is used as a dam for the outer frame of the wall, and a plurality of holes are formed in the plywood panel for passing screw portions of the separator for keeping the gap between the dams. In addition to the necessity, if the plywood panel is used several times as a formwork, it gradually peels off from the end and breaks, so it is difficult to maintain the original shape of the plywood panel, it is difficult to use it many times, and it must be replaced frequently. It is expected that the production of plywood panels will be reduced due to environmental damage such as a decrease in tropical rain forests because the main material of the plywood panel is southern materials such as lauan. Mass use over a long period of time was difficult. Also, since each part is fixed with screws etc., it takes time to install and dismantle the formwork, and at the time of installation, skill such as nailing without making a difference between adjacent plywood panels There is a problem that much work is required and labor costs are increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and prevents damage to a heat insulating material used for a wall inner frame and a plywood panel used for a wall outer frame, and saves time for repairing the heat insulating material. It is an object of the present invention to provide a concrete formwork that can increase the number of times of use, further increase the work efficiency by enabling the members to be easily connected to each other, and greatly reduce the labor and cost in the formwork installation and dismantling work as a whole. I do.

[0016]

SUMMARY OF THE INVENTION A concrete formwork according to the present invention includes a dam for holding concrete in a predetermined mold, and a shoring for supporting the dam, and a concrete wall formed by casting is provided. A concrete formwork that is supported from the outside and inside as the wall outer frame and wall inner frame, respectively, and protects the concrete until it hardens after the concrete is poured. A cross frame formed by vertically extending a plate and having a plurality of clip holes formed at predetermined intervals in the longitudinal direction in the substantially plate-like body portion, and a member of a predetermined length having a substantially T-shaped cross section. A clip having a pad to be formed, a shaft portion fitted into the clip hole of the cross frame, and a fixing portion for integrally clamping the substantially plate-shaped body portions of the two adjacent cross frames; A separator formed in a substantially plate-like body and having at one end a fixed end fixed to the beam frame, wherein the weir for the wall inner frame is made of a plate-like heat insulating material; A wall inner frame is formed by combining two of the cross frames and forming a pair of the pad frames at a substantially plate-like body portion having the clip hole.
Symmetrically adjacent to each other so as to sandwich the vertical side portion of the character shape, the upright plate of the cross frame and the T-shaped horizontal side portion of the pad are disposed in parallel and at a predetermined interval, and the weir plate is provided at the predetermined interval portion. The side ends are inserted and held.Furthermore, the fixed end of the separator is fixed to the cross frame, the shaft of the clip is fitted into the clip hole of the cross frame, and the adjacent cross frames are sandwiched between the fixing portions of the clip. A plurality of the weir plates are continuously formed along the concrete casting position by being attached and tightened, and the other end of the separator is fixed to a predetermined position of the wall outer frame. As described above, according to the present invention, in addition to supporting and protecting the end portion of the insulating plate, which is a heat insulating material, with the cross frame and the pad, using almost no nails or the like, the separator is not a cross plate but a cross plate. By fixing it to the frame, surface damage such as holes can be almost eliminated, the safety of the surface is improved without exposing the nail tips, etc. It can be easily attached to and removed from the frame, and the installation and dismantling of the form can be facilitated, and the work efficiency can be improved. In addition, by connecting the crosspieces with the clips, misalignment or the like hardly occurs, skill is not required, labor costs can be reduced, and the construction period can be shortened.

Further, the concrete formwork according to the present invention may be formed, as required, in an elongated member having a substantially F-shape or a substantially inverted F-shape cross-section in which the right and left sides are inverted, and a groove extending in the longitudinal direction. The support portion is formed by forming a plurality of clip holes at predetermined intervals in the longitudinal direction in a plate-like portion extending from the back surface of the groove of the holding portion with a holding portion to which the side end portion of the weir is fitted. An outer frame formed by the holding portion and the support portion, wherein the separator has a fixed end that is substantially coincident with one end at the other end, and the wall outer frame includes the outer frame. The two sets of frames are symmetrically adjacent to each other at a substantially plate-like body portion, and the side ends of the weir are inserted into and held in the holding portions of the outer rails, and further, the fixed ends of the other ends of the separators To the outer frame and clip into the clip holes on the outer frame. Is fitted to the shaft portion, and pinching Tightened outside for 桟枠 between that side by side in the fixing portion of the clip,
A plurality of the weir plates are continuously formed along the concrete casting position. As described above, according to the present invention, in addition to supporting and protecting the end of the crevice plate with the holding portion of the outer cross frame in the outer frame of the wall, in addition to the separator, the outer cross frame is not a crest plate. By fixing
Almost no change in shape such as breakage or holes from the edge of the weir board, we can greatly reduce the material cost by increasing the number of times the weir board can be diverted, and connect and separate the weir board and the outer frame. And the workability is greatly improved. In addition, by connecting the outer frame to each other with the clip, installation and disassembly are simple and work is facilitated.

In the concrete formwork according to the present invention, if necessary, the pad may be formed with a fixed end portion of one end of the separator at a vertical side portion of the T-shaped cross section, and the vertical side of the T-shaped cross section. The part is extended a predetermined length to the side part side,
A fixed end portion of the other end of the separator is formed at a tip of the extension portion, and is formed integrally with the separator. As described above, according to the present invention, since the pad is also used as the separator, the number of components can be reduced, cost can be reduced, and workability during installation and assembly can be improved.

In the concrete formwork according to the present invention, if necessary, the separator may be provided with a hole corresponding to the clip hole as a fixed end portion, and the separator may be inserted into the frame or the outer frame. Separator fixation, sandwiching the separator end portion between the adjacent rail frames or between the outer rail frames, overlapping the hole with the hole for the clip, inserting the shaft of the clip,
This is done by tying together. As described above, according to the present invention, since the separator can be easily fixed to the cross frame or the outer cross frame, the efficiency of the installation / disassembly operation is improved.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment of the Present Invention) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a plan view of a concrete formwork according to the present embodiment, FIG. 2 is a perspective view of the concrete formwork according to the present embodiment, and FIG. 3 is an explanatory view of a main part of the concrete formwork according to the present embodiment. FIG. 4 is a schematic configuration explanatory view of a cross section of the concrete formwork according to the present embodiment, and FIG. 5 is a schematic configuration explanatory view of an outer cross section of the concrete formwork according to the present embodiment.

In each of the above figures, a concrete formwork 1 according to the present embodiment forms a heat insulating board 2 and a plywood panel 3 as dams for supporting concrete, and a wall inner frame by holding both side ends of the heat insulating board 2. A plurality of cross frames 4,
A pad 5 attached to the cross frame 4 to support a side end of the heat insulating board 2; a plurality of outer cross frames 6 for holding both side ends of the plywood panel 3 to form a wall outer frame; A separator 7 for holding a predetermined interval between the inner wall and outer wall facing each other with a portion interposed therebetween, a clip 8 having a shaft portion 8a and a fixing portion 8b, a plywood 2 as the weir plate, and heat insulation This is a configuration including a middle crossbar (long vertical end) 9 and an outer crossbar (horizontal wide end) 10 which are support structures for supporting the board 3 from behind.

The heat insulating board 2 and the plywood panel 3 are made of a known plate-like heat insulating material or plywood having sufficient strength to support the poured concrete, and have a predetermined size corresponding to a concrete wall to be completed. It is a configuration to be formed. Among them, the heat insulation board 2 is left on the concrete surface as it is even after the concrete is poured and hardened,
It plays a role of heat insulation and dew prevention.

The cross frame 4 is an elongated member having a substantially cross-section formed by suspending an upright plate 4a of a predetermined height at a predetermined position of a substantially plate-shaped body in parallel with the longitudinal direction, or having a substantially cross-section inverted right and left. A plurality of clip holes 4b are formed at predetermined intervals in the longitudinal direction in the substantially plate-like body portion by an aluminum member. A stiffening plate 4c for reinforcement is provided between the upright plate 4a and the substantially plate-like body portion so as to have a predetermined interval in the longitudinal direction.
Is arranged. A plurality of nail holes 4d are arranged on the upright plate 4a at predetermined intervals in the longitudinal direction so that nails for fixing the heat insulating board 2 can be driven. This cross frame 4
Are used as a pair having a symmetrical cross section and a cross section having a substantially rectangular cross section. These crosspieces 4 are arranged side by side in a symmetrical direction, and are fixed together by fastening with clips 8. It is arranged.

The pad 5 is a member made of a heat insulating material having a substantially T-shaped cross section and having a predetermined length. A portion forming the vertical side of the T-shaped cross section is attached to the crosspiece frame 5a, and the T-shaped cross section is formed. A supporting portion 5b for supporting the heat insulating board 2 at a portion forming a horizontal side.
Hole 5 corresponding to the clip hole 4b
c is formed in the mounting portion 5a. The pad 5 is sandwiched between a pair of side frames 4 adjacent to each other in the symmetrical direction so that the mounting portion 5a forming the vertical side of the T-shaped cross section, and the clip hole 4b and the hole 5c overlap. Plural frames 4 are provided at predetermined intervals in the longitudinal direction, and are fixed integrally with the frame 4 by clips 8. The supporting portion 5b, which forms the lateral side of the T-shaped cross section of the pad 5, is disposed in parallel with the upright plate 4a of the cross frame 4 and at substantially the same interval as the thickness of the heat insulating board 2, and between the supporting portion 5b and the upright plate 4a. The structure is such that the heat insulating board 2 side end is inserted and attached to the device.

The outer frame 6 is an elongated aluminum member having a substantially F-shape or a substantially inverted F-shape cross-section that is inverted right and left, and a groove extending in the longitudinal direction is formed on the side of the plywood panel 3. A clip-shaped hole 6d is formed as a holding portion 6a for fitting the end portion, and a plate-like portion extending from the groove back portion of the holding portion 6a is provided at a predetermined interval in the longitudinal direction. Thus, the support portion 6b is used as a support for mounting a shoring. A plurality of nail holes 6e are arranged at predetermined intervals in the longitudinal direction on the back surface of the groove of the holding portion 6a, and nails for fixing the plywood panel 3 can be driven. Further, between the side wall of the groove of the holding portion 6a and the support portion 6b, a steady rest plate 6c for reinforcement is arranged at a predetermined interval in the longitudinal direction.

The outer frame 6 has a symmetrical substantially F-shaped cross-section and a substantially inverted F-shaped cross-section similar to the cross-shaped frame 4 and is used as a pair. Pier frame 6
They are arranged side by side with each other in a symmetrical direction and fixed integrally by tightening with a clip 8.

The separator 7 has clips 8 at both ends.
Is formed of a thin steel plate of a predetermined length having a hole 7a through which the shaft portion 8a passes, and one end of which is a clip hole 4b of an adjacent frame 4
, The hole 7a is sandwiched between them so as to overlap with each other, and the beam frame 4 is tightly fixed together with the clip 8 and the other end of the outside beam is adjacent to the other side of the concrete placing portion in the same manner as described above. The clip hole 6d and the hole 7a are sandwiched between the frames 6 so as to overlap each other, and are fixed and disposed together with the outer side frame 6 with the clip 8, so that the side frame 4 and the outer side frame 6 are integrated. Thus, the wall inner frame and the wall outer frame are held at a predetermined interval. Even if the separator 7 is provided, the separator 7
Is formed sufficiently thin, and since the cross frames 4 or the outer cross frames 6 are strongly tied with the clip 8, little gap is formed between the cross frames 4 and between the outer cross frames 6. There is no leakage of concrete from here.

The clip 8 has clip holes 4b, 6
d, and an extended portion extending at a right angle from the axial portion 8a, and the end of the extended portion is bent into a substantially hook shape for two substantially plate-shaped portions of the cross frame 4. Is formed in a clip body including a substantially U-shaped fixing portion 8b formed so as to face the extended portion in parallel with an interval corresponding to the thickness of the fixing portion 8b. The clip 8 is provided with each of the clip holes 4b of the cross-frame 4 or the cross-frame 6 for the outside, which are disposed adjacent to each other in pairs.
The shaft portion 8a is passed through the shaft portion 8d, and the fixing portion 8b is rotated downward about the shaft portion 8a so as to be fitted into the overlapping frame 4 or the outer frame 6, and the shaft portion 8a is provided by the shaft portion 8a. Alternatively, the fixing portion 8 can be held while holding the outer cross-frames 6 without any difference.
b, the cross frame 4 or the outer cross frame 6 is integrally fastened.

The middle bar 9 and the outer bar 10 are made of aluminum and are made of aluminum.
Alternatively, several slabs are attached to the rear side of the plywood panel 3 for reinforcement to support these dams from the rear side to prevent swelling in the vertical direction. It is attached to the thick receiving bracket 11 installed in the clip holes 4b and 6d of the cross frame 6, and is laid over the plurality of cross frames 6 or the rear cross frame 6, and the cross frame 4 and the cross frame 6 for outside are mounted. And supporting the middle rail 9 from the rear side to prevent the heat insulation board 2 and the plywood 3 from collapsing.

Next, the operation of installing the concrete formwork based on the above configuration will be described. First, a separator 7 is sandwiched between a pair of symmetrical frames 4 that are adjacent to each other in the horizontal direction in advance.
Of the separator 7 and the mounting portion 5a of the pad 5 at appropriate intervals so as not to overlap with each other, and the clip hole 4b and the hole 7a of the separator 7 or the hole 5c of the pad 5 are arranged so as to overlap with each other. The shaft 8a of the clip 8 is passed through the clip hole 4b which overlaps with the hole 8b, and the fixing portion 8b is rotated downward about the shaft 8a to tighten and tighten the overlapping frame 4 and the separator 7 and the hole of the pad 5 The rail 4, the separator 7, and the pad 5 are integrally fixed to the clip hole 4 b overlapping with 5 c through the pin 11 a of the thick receiving bracket 11. Then, the end portion of the heat insulating board 2 is engaged between the upright plate of the cross frame 4 and the holding portion 5a of the pad, and a nail is driven from the nail hole 4d to fix the heat insulating board 2 and the cross frame 4. In this way, the heat insulating board 2 and the cross frame 4 are successively connected to each other while attaching each side portion of the heat insulating board 2 to the cross frame 4, and a wall inner frame is constructed at an installation position corresponding to concrete casting.

On the other hand, a hole 7a and a clip hole 4b are formed at the other end of the separator 7 between a pair of symmetrical outer frames 6 which are adjacent to each other in the lateral direction in advance on the opposite side of the concrete placing position. The clip 8 is attached to the clip hole 4b, which overlaps with the hole 7a of the separator 7, so that the fixing portion 8b is rotated downward about the shaft portion 8a. Tightening is performed by the fixing portion 8b, and the outer frame 6 is integrally fixed to each other without any difference. As a result, the cross-frame 4 and the outer cross-frame 6 that face each other across the concrete casting portion are separated from each other by the separator 7.
And the gap between the facing frame 4 and the outer frame 6 and the space between the heat insulating board 2 and the plywood panel 3 are maintained. Thereafter, the end of the plywood panel 3 is fitted into the holding portion 6a of the outer frame 6 and nails are driven into the nail holes 6e to fix the plywood panel 3 and the outer frame 6 in advance. In this manner, the plywood panel 3 and the outer frame 6 are successively connected to each other while attaching the respective side portions of the plywood panel 3 to the outer frame 6, and the wall outer frame is constructed at an installation position corresponding to concrete casting.

Before and after the construction of the inner wall frame and the outer wall frame, as the support, the inner crosspieces 9 are arranged at predetermined intervals behind the heat insulating board 2 and the plywood panel 3, and the crosspieces 4 and the outer frame are provided. The outer rails 10 are sequentially attached to the thick receiving bracket 11 attached to the rail frame 6 from the lower side to support the rear of the heat insulating panel 2 and the plywood panel 3 which are continuously provided. Even in the state where concrete is cast, the outer frame 10, the outer frame 6 and the middle frame 9 are securely supported by the outer rail 10, and even if the heat insulating board 2 and the plywood panel 3 are subjected to lateral pressure from concrete, they are bent. Not
Concrete can be reliably held in a predetermined mold.

After the concrete has hardened, the respective members are removed in the reverse order, and the pad 5 sandwiched between the heat insulating boards 2 breaks off the exposed portion from the surface of the heat insulating board 2 and is integrated with the concrete wall. The exposed portion of the separator 7 is also cut off, leaving only the heat insulating board 2 inside the concrete wall. Further, since a step is formed at the position of the outer frame 6 outside the wall, this portion is thinly filled with mortar to finish the surface.

As described above, in the concrete formwork according to the present embodiment, the ends of the heat insulating board 2 are covered by the crosspieces 4 and the pads 5, and the ends of the plywood panel 3 are protected by the outer crosspieces 6, respectively. In addition, in addition to supporting with little use of nails and the like, by fixing the separator 7 to the cross frame 4 and the outer cross frame 6 instead of the respective dams, the surface damage such as holes in the heat insulating board 2 is substantially reduced. In addition to eliminating the need for repairs after removing the formwork, the nails are not exposed and the safety is excellent, and the plywood panel 3 has a shape such as breakage such as peeling from the end or a hole. The change can be almost eliminated, the number of reusable times can be increased, and the material cost can be greatly reduced. In addition, by connecting the cross frame 4 and the outer cross frame 6 to each other, fixing the separator 7 and the like with the clip 8, misalignment and the like hardly occur, and the heat insulating board 2 and the plywood panel 3 are connected to the cross frame 4 and the outer cross frame. In addition to being easily attached to and detached from the frame 6, installation and disassembly of the mold are facilitated, and workability is greatly improved.

(Second Embodiment of the Present Invention) Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. FIG. 6 is an enlarged explanatory view of a main part of the concrete formwork according to the present embodiment, FIG. 7 is a schematic configuration explanatory view of a cross section of the concrete formwork according to the present embodiment, and FIG. It is a wall inside state explanatory drawing after disassembly of a concrete formwork.

In each of the drawings, the concrete form 1 according to the present embodiment includes a heat insulating board 2, a plywood panel 3, a cross-frame 4, and a pad 5 in common with the first embodiment.
, An outer cross frame 6, a separator 7, a clip 8,
It has a middle crossbar (long vertical end) 9 and an outer crossbar (horizontal wide end) 10, and is different from the cross frame 4 in that the crossbar frame 4 has a substantially L-shape in which an upright plate 4 a is suspended from one side of a substantially plate-like body. The pad 5 is formed in a cross-sectional shape, and the pad 5 is a supporting portion 5 forming a lateral side of a T-shaped cross section.
An auxiliary support plate 5d, which is parallel to and substantially parallel to the thickness of the heat insulating board 2, is vertically suspended from the support portion 5b. The configuration is between the auxiliary support plates 5d.

Next, the operation of installing a concrete formwork based on the above configuration will be described. In the same manner as in the first embodiment, the cross frame 4, the separator 7 and the pad 5 are integrally fixed, and the end of the heat insulating board 2 is in close contact with the upright plate 4a of the cross frame 4, and the auxiliary support plate 5d of the pad 5 The heat insulating board 2 and the cross frame 4 are fixed by engaging between the support member 5 and the support portion 5b. In this way, the heat insulating board 2 and the cross frame 4 are successively provided one after another, and the inner wall frame is constructed at an installation position corresponding to concrete casting.

On the other hand, on the opposite side of the concrete casting position as well, as in the first embodiment, the separator 7
The other end and the outer frame 6 are integrally fixed, and the plywood panel 3 is fixed.
Is fitted to the holding portion 6a of the outer frame 6 and the plywood panel 3 and the outer frame 6 are fixed. In this manner, the plywood panel 3 and the outer frame 6 are successively provided one after another, and the outer wall frame is constructed at an installation position corresponding to concrete casting.

Further, as supports, middle crosspieces 9 are arranged at predetermined intervals behind the heat insulating board 2 and the plywood panel 3, and the thick metal fittings 1 attached to the crosspiece frame 4 and the outer crosspiece frame 6.
The outer rails 10 are sequentially attached to the lower part 1 from the lower side to support the rear of the heat insulating panel 2 and the plywood panel 3 which are continuously provided, thereby completing a formwork.

After the concrete poured into the form is hardened, each member is removed in the same manner as in the first embodiment, and the exposed portions of the pad 5 and the separator 7 from the surface of the heat insulating board 2 are cut off. Insulation board 2 inside concrete wall
Only leave.

As described above, also in the concrete formwork according to the present embodiment, the heat insulation board 2 can be almost completely free from surface damage, the labor for repair can be saved, and the plywood panel 3 can be damaged or changed in shape. It can be almost eliminated, and the number of reusable times can be increased, and material costs can be reduced. Moreover, installation and dismantling of the formwork are easy, and workability is greatly improved.

(Third Embodiment of the Present Invention) Hereinafter, a third embodiment of the present invention will be described with reference to FIGS. 9 and 10. FIG. 9 is an enlarged plan view of a main part of the concrete formwork according to the present embodiment, and FIG. 10 is a perspective view of a padded separator of the concrete formwork according to the present embodiment.

In each of the figures, the concrete formwork 1 according to the present embodiment has a heat insulating board 2, a plywood panel 3, a cross-frame 4, an outer cross-frame 6, and a common form as in the second embodiment. , A clip 8, a middle crosspiece (long vertical end) 9, and an outer crosspiece (wide end thick) 10, and the difference is that a hole at one end of the separator is formed in a mounting portion 12 a forming a vertical side of a T-shaped cross section of the pad. 12c, and the attachment portion 12a protrudes from the support portion 12b forming the lateral side of the T-shaped cross section and is extended by a predetermined length, and a hole 12e at the other end of the separator is formed at the tip of the extension portion. And a padded separator 12 having both functions of the pad and the separator.

Next, the operation of installing the concrete formwork based on the above configuration will be described. First, one end of the padded separator 12 is sandwiched between a pair of symmetrical frame frames 4 that are adjacent to each other in the horizontal direction at an appropriate interval, and the clip holes 4b and the holes 12c of the padded separator 12 are arranged so as to overlap. Then, the shaft portion 8 of the clip 8 is inserted into the clip hole 4 b overlapping the hole 12 c of the padded separator 12.
a, the fixing portion 8b is rotated downward about the shaft portion 8a, and the overlapping frame 4 and the padded separator 12 are tightened and tightened, thereby integrally fixing the frame 4 and the padded separator 12. . The pin 11a of the thick receiving bracket 11 is attached to the vacant clip hole 4b. Then, the end portion of the heat insulating board 2 is engaged between the support portion 12b of the padded separator 12 and the auxiliary support plate 12d, and the heat insulating board 2 and the cross frame 4 are fixed. In this way, the heat insulating board 2 and the cross frame 4 are successively provided one after another, and the inner wall frame is constructed at an installation position corresponding to concrete casting.

On the other hand, the other end of the padded separator 12 is inserted between the hole 12e and the clip hole between a pair of symmetrical outer rails 6 which are adjacent to each other in the lateral direction on the opposite side of the concrete placing position. 6d so as to overlap with each other, and attached to the clip hole 6d overlapping with the hole 12e of the padded separator 12 through the shaft portion 8a of the clip 8,
The fixing portion 8b is rotated downward around the shaft portion 8a, and the overlapping support portions 6b are tightened and tightened by the fixing portion 8b, and the outer beam frames 6 are integrally fixed without any mistake. As a result, the pier frame 4 that faces the concrete
And the outer frame 6 is integrally fixed via the padded separator 12, so that the facing frame 4 and the outer frame 6 and the gap between the heat insulating board 2 and the plywood panel 3 are maintained. Thereafter, the end of the plywood panel 3 is fitted into the holding portion 6a of the outer frame 6, and the plywood panel 3 and the outer frame 6 are fixed. Thus, the plywood panel 3 and the outer frame 6
Are installed one after another, and the outer frame of the wall is constructed at an installation position corresponding to concrete casting.

Further, as supports, the middle crosspieces 9 are arranged behind the heat insulating board 2 and the plywood panel 3 at a predetermined interval, and the thick metal fittings 1 attached to the crosspiece frame 4 and the outer crosspiece frame 6 are provided.
The outer rails 10 are sequentially attached to the lower part 1 from the lower side to support the rear of the heat insulating panel 2 and the plywood panel 3 which are continuously provided, thereby completing a formwork.

After the concrete poured into the form is hardened, each member is removed in the same manner as in the first embodiment, and the exposed portion of the padded separator 12 from the surface of the heat insulating board 2 is cut off to form the concrete. Insulation board 2 inside the wall
Only leave.

As described above, also in the concrete formwork according to the present embodiment, the heat insulation board 2 can be almost completely free from surface damage, the repair work can be omitted, and the plywood panel 3 can be damaged or changed in shape. It can be almost eliminated, and the number of reusable times can be increased, and material costs can be reduced. Moreover, installation and dismantling of the formwork are easy, and workability is greatly improved. Furthermore, since the pad-mounted separator 12 in which the pad and the separator are integrated is used, the number of assembling steps can be reduced, the efficiency of installation / disassembly work can be improved, and the cost can be reduced by reducing the number of parts.

In the concrete formwork according to each of the above embodiments, the crosspiece 4 and the outer crosspiece 6 may be formed in a symmetrical shape around a position where the length thereof is reduced to half. When the paired frame 4 or the outer frame 6 is arranged adjacent to the single frame 4 or the outer frame 6, the same-shaped members can be used upside down, respectively. Manufacturing cost can be reduced by reducing the number of parts.

[0050]

As described above, according to the present invention, in addition to supporting and protecting the end portion of the weir board, which is a heat insulating material, with the cross frame and the pad, using a nail or the like with little use, the separator is used. By fixing it to the cross frame instead of the crest plate, surface damage such as holes can be almost eliminated, there is no exposure of nail points etc., excellent safety and surface quality will be improved, and repair of heat insulation material will be troublesome And can be easily attached to and detached from the beam frame, and the installation and disassembly of the formwork is facilitated, thereby improving the working efficiency. In addition, by connecting the crosspieces with each other by clips, misalignment or the like hardly occurs, skill is not required, and labor costs can be reduced and the construction period can be shortened. In the present invention, in addition to the wall outer frame, in addition to supporting and protecting the end portion of the weir by the holding portion of the outer cross frame,
By fixing the separator to the outer frame instead of the dam, almost no change in shape such as breakage or holes from the end of the dam is increased, and the number of times the dam can be diverted increases the material cost significantly And the connection and separation of the weir plate and the outer frame are facilitated, and the operability is greatly improved. In addition, by connecting the outer crosspieces with the clips, there is an effect that installation and disassembly are easy and work is easy. Also,
In the present invention, since the pad is also used as the separator, the number of parts can be reduced, cost can be reduced, and workability during installation and assembly can be improved. Further, in the present invention, since the separator can be easily fixed to the cross frame or the outer cross frame, there is an effect that the efficiency of installation / disassembly work is improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a concrete formwork according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a concrete formwork according to the first embodiment of the present invention.

FIG. 3A is an enlarged explanatory view of a main part of the concrete formwork according to the first embodiment of the present invention. (B) is a side view of the separator of the concrete formwork according to the first embodiment of the present invention.

FIG. 4A is an enlarged plan view of a main part inside a concrete formwork according to the first embodiment of the present invention. (B) is a perspective view of a pad of the concrete formwork according to the first embodiment of the present invention.

FIG. 5 is an enlarged plan view of a main part on the outside of the concrete formwork according to the first embodiment of the present invention.

FIG. 6 is an enlarged explanatory view of a main part of a concrete formwork according to a second embodiment of the present invention.

FIG. 7A is an enlarged plan view of a main part inside a concrete formwork according to a second embodiment of the present invention. (B) is a perspective view of a pad of the concrete formwork according to the second embodiment of the present invention.

FIG. 8 is an explanatory diagram of a state inside a wall after dismantling of a concrete formwork according to a second embodiment of the present invention.

FIG. 9 is an enlarged plan view of a main part of a crosspiece of a concrete formwork according to a third embodiment of the present invention.

FIG. 10 is a perspective view of a padded separator of a concrete formwork according to a third embodiment of the present invention.

FIG. 11A is a plan view of a conventional concrete formwork. (B) is a perspective view of a conventional concrete formwork.

FIG. 12A is a plan view of another conventional concrete formwork. (B) is a perspective view of another conventional concrete formwork.

FIG. 13 is an explanatory view showing the front and back sides of a heat insulating board of another conventional concrete formwork.

FIG. 14 is an explanatory view of the inside of a wall after dismantling another conventional concrete formwork.

[Explanation of symbols]

 1, 100, 200 Concrete formwork 2, 210 Insulation board 3, 110, 220 Plywood panel 4 Crossing frame 4a Standing plate 4b, 6d Clip hole 4c, 6c Steady stop plate 4d, 6e Nail hole 5 Pad 5a, 12a Attachment portion 5b, 12b Supporting part 5c, 12c Hole 5d, 12d Auxiliary support plate 6 Outer frame 6a Holding part 6b Supporting part 7, 140, 250 Separator 7a, 12e Hole 8 Clip 8a Shaft part 8b Fixing part 9, 120, 230 Bars 10, 130, 240 Outer bar 11 Thick receiving bracket 12 Padded separator 150, 260 Crosspiece 160, 280 Nail 170 Insulation material 180, 270 Umbrella nail 190, 290 Form tie

Claims (4)

[Claims] 1. A slab for holding concrete in a predetermined mold, and a shoring for supporting the slab, wherein concrete walls formed by casting are formed as an outer frame and an inner frame of the wall from the outside and the inside, respectively. A concrete formwork that supports and protects the concrete until it hardens after the concrete has been poured in. An upright plate having a predetermined height is formed vertically at a predetermined position on a side surface of an elongated substantially plate-like body in parallel with the longitudinal direction. A frame formed by forming a plurality of clip holes at predetermined intervals in a longitudinal direction in a body portion; a pad formed of a member having a predetermined length having a substantially T-shaped cross section; A clip having a shaft fitted into the hole, and having a fixing portion formed so as to be able to integrally clamp the substantially plate-like body portions of the two adjacent frame frames; and the wall outer frame and the wall inner frame. A wall formed of a substantially plate-like body having a predetermined length necessary for holding the wall, and a separator having a fixed end fixed to the cross frame at one end of the substantially plate-like body; A wedging plate is made of a plate-like heat insulating material, and the wall inner frame is a T-shaped vertical portion of the pad at a substantially plate-like body portion having the hole for the clip formed by pairing the cross frames. The upright plate of the cross frame and the T-shaped side portion of the pad are arranged in parallel and at predetermined intervals, and the side ends of the weir are arranged at the predetermined interval. It is inserted and held, and the fixed end of the separator is fixed to the cross frame, and the shaft of the clip is fitted into the clip hole of the cross frame. And a plurality of said weirs are continuously formed along the concrete casting position. A concrete formwork wherein the other end of the separator is fixed to a predetermined position on the outer wall frame. 2. The concrete formwork according to claim 1, wherein the groove is formed in an elongated member having a substantially F-shaped or a substantially inverted F-shaped cross-sectional shape obtained by inverting left and right, and extending in a longitudinal direction. A support portion is formed by holding a plurality of clip holes at predetermined intervals in the longitudinal direction in a plate-like portion extending from the back surface of the groove of the support portion. An outer cross frame formed by the holding portion and the support portion, wherein the separator has a fixed end portion substantially coincident with one end at the other end, and the wall outer frame is the outer cross frame. A pair of the two are symmetrically adjacent to each other at a substantially plate-like body portion, the side end of the weir is inserted and held in the holding portion of the outer frame, and the fixed end of the other end of the separator is further fixed. Fix it to the outer frame and clip it into the clip hole on the outer frame. Insert the shaft part of
A concrete formwork characterized in that a plurality of said weir plates are continuously provided along a concrete pouring position by sandwiching adjacent outer crosspieces at a fixing portion of a clip and tightly binding them. 3. The concrete formwork according to claim 2, wherein the pad is formed with a fixed end portion of one end of the separator at a vertical side portion of a T-shaped cross section and a vertical side portion of a T-shaped cross section. The concrete form is characterized by being extended by a predetermined length to the side of the lateral side, a fixed end of the other end of the separator being formed at the tip of the extended part, and being integrally formed with the separator. 4. The concrete formwork according to any one of claims 1 to 3, wherein the separator has a hole corresponding to the clip hole as a fixed end, The separator is fixed to the cross frame by sandwiching the separator end between adjacent cross frames or the outer cross frame, overlapping the hole with the clip hole, inserting the shaft portion of the clip, and tightening together. Concrete formwork characterized by being performed by.