JPH0248706B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a formwork used in the sash tipping method. The Satsushi tip construction method has recently been adopted at many sites as part of labor-saving measures, but it also shortens the construction period and
Although the objective of saving labor is almost achieved, quality and precision are reduced.

Conventionally, the formwork used in the sash tip construction method consists of a single formwork for the opening between the interior and exterior walls of the building frame, and the opening frame is placed around the outer periphery of the formwork.
It is difficult to remove the formwork from the opening in the hardened concrete, and the formwork is deformed, or in the case of wooden formwork, it is completely destroyed and removed. In the case of frames, extensive repairs are required at one site only. Another disadvantage is that the concrete is easily damaged when the formwork is removed, and a great deal of time is consumed in removing the formwork.

In contrast, the invention of Japanese Patent Application No. 57-39755, ``Formwork in Sash-adhesive construction method,'' is ``an external formwork having a shape of the inner periphery of the opening on the outside side of the opening of a concrete building, and The concrete formwork is divided into an internal formwork that supports the opening frame of the sash provided in the section, and the external formwork and internal formwork are removable, and the external formwork and internal formwork are separated and dismantled after concrete pouring. The formwork used in the satsushi tip construction method is fastened so that it can be fastened.The formwork for the opening is divided into the inside and outside and joined together, making it easier to dismantle the mold and reducing damage to the concrete. . Furthermore, the mold is lighter and easier to handle, reducing deformation and damage to the mold during disassembly. The internal formwork can be used regardless of the thickness of the concrete because the position where the internal formwork and external formwork are separated is the outside surface of the sash opening frame.
And the formwork can be used repeatedly. Furthermore, based on the above-mentioned invention, many inventions and ideas have been made, such as one in which the concrete formwork of the opening is divided and fastened into upper and lower vertical formwork in the direction of projection to further facilitate demolding. ing.

However, in each of the above-mentioned inventions and ideas, the concrete formwork for the opening is first assembled by fastening it to an outer plate supported by external scaffolding or the like. However, if this is done, all the concrete formwork must be brought inside, and it will be difficult to support the molds for the floorboards on the upper floor until after that. Moreover, workability is not good because the outer plates of the concrete formwork that form the outside of the building are first erected. Therefore, the conventional method of supporting an open frame concrete form by fastening it to the outside plate has limitations on the process.

However, it is difficult to use the conventional concrete formwork for the opening to support it from the indoor side. That is, since it is attached to the outer plate with the outer plate as a reference, it is cantilevered from the outer plate. Even if the outer plate of the formwork that forms the outer wall surface of the concrete formwork covers the opening, it will eventually come off, so even if it gets damaged, there is no problem, so you can attach the concrete formwork freely. However, the inner board on the indoor side is a finished base material that also serves as the concrete formwork, so it is not possible to cover the opening. It must not be damaged again. Therefore, there is a problem in that the concrete formwork cannot be directly fixed to the indoor side as in the above-mentioned invention of the formwork in the sash tipping method.

The present invention has an inner plate, an inner formwork that supports an aluminum sash opening frame embedded in a wall opening, an outer formwork that is removably fixed to the inner formwork, an outer plate that is fixed to the outer formwork, and The board is used as an internal finishing base material that also serves as a concrete formwork, and an opening is provided in the inside board, and the part of the internal formwork that supports the aluminum sash opening frame is inserted through the opening of the inside board, and the inside side This formwork is used in the sash tip construction method, and is characterized in that it extends to the outside and is provided with a member for attaching to the inner plate at the extended portion.

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 is a front view of one window section of a concrete building as seen from the inside of the building under construction.
FIG. 2 is an enlarged sectional view taken along the line AA of the opening 1 in FIG.
FIG. 3 is also an enlarged sectional view taken along the line BB.

The internal formwork 2 is a rigid rectangular structure that is spaced apart by the thickness of an inclusion such as plywood 5 from the largest rectangular body that passes through the interior and exterior directions of the aluminum sash opening frame 3.
A fitting part 4 fitted into the opening frame 3 of the aluminum sash with a plywood 5 interposed therebetween extends to the inside.
The opening edge 7 of the inner board 6 of the indoor finishing base, which also serves as the concrete formwork, is square, and there is a gap between the edge 7, the inner surface 8 of the opening frame 3, and the outer flange 9. After the molding, the picture frame is constructed and fitted. The mounting flange 11 is attached to the fitting portion 4 so as to abut against the inner plate 6.
The end of a heat insulating material (for example, a synthetic resin molded product) 12 is formed as an outer flange on the inner extension end of the mounting flange 11 and is fastened to the inner surface 8 of the sash and the inner plate 6 over the entire circumference. It is in contact with the edge 7 (same surface as the edge 7 of the above-mentioned inner plate 6), has a shape that closes the gap between the opening frame 3 and the heat insulating material 12, and is fitted into the edge 7 arranged in a rectangular shape. Fitting member 1
3 is surrounded and welded.

The internal formwork 2 is fitted into the fitting portion formed by the edge 7, the mounting flange 11 is brought into contact with the inner plate 6, and the common holes in the mounting flange 11, the inner plate 6, and the heat insulating material 12 are used to fasten them. Sleep 1 for insulation 12
4 is fitted, a nut 16 with a hexagonal head and a cylindrical portion 15 that fits into a hole in the inner plate 6 is fitted on the flange 11 and the inner plate 6 side through a washer, and a retaining plate 17 is inserted into the heat insulating material 12. insert the bolt 18 into the sleeve 14 and tighten the cylindrical portion 15 of the nut 16.
The mounting flange 11, inner plate 6, and heat insulating material 12 are tightened. In this sash top construction method, the inner board 6 is first supported by a frame such as a stay between the floor and the facing wall.

L-shaped brackets 19 are welded to the inner circumference of the fitting part 4 at the center of each side of the fitting part 4, as shown in FIG. A cross beam 21 is fixed by bolts and nuts 22. The cross beam 21 may be configured such that the cross-shaped intersecting portions are pin-coupled or rigidly coupled using bolts. The straight beam 21 keeps the internal formwork 2 rigid,
In addition, the external formwork, which will be explained later, is firmly attached to the internal formwork 2.
This is to conclude the agreement.

Since the internal formwork 2 is configured as described above, the internal formwork 2 may be attached to the inner plate 6 and then the opening frame 3 may be fitted into the fitting part 4 of the internal formwork 2 via the plywood 5. When the opening portion of the inner plate 6 can pass through the opening frame 3 of the aluminum sash, the opening frame 3 may be fitted into the internal form 2 in advance. Since the opening frame 3 of the aluminum sash abuts against the outer surface 10 of the fitting member 13, the position of the opening frame 3 is precisely sized in the direction from the inner panel 6 on the indoor side.

The external formwork 23 has an opening 24 for disassembly at the external end of the rectangular mold forming the external side of the opening 1 described above, a flange 25 around the opening 24, and mounting holes for bolts and nuts 26 in the flange 25. A partition member 27 is provided at the inner side end of the opening frame 3 and the outer surface thereof is in contact with the outer surface of the opening frame 3 directly or with a thin plywood plate or the like (not shown) interposed therebetween. They are fastened by bolts and nuts 29 that are inserted through common bolt holes of the partition member 27 and the inner flange 28.

The lower part of the partition material 27 of the external formwork 23 retreats in a stepped manner towards the outside avoiding the screen door rail 32 of the lower frame 31 of the opening frame 3 to form a support wall 33, An additional external formwork 35 having a portion that will form the shape of the opening 1 between the frame 31 and the water return 34 is attached to the supporting wall 33.
Nut 4 that is in contact with and fixed to the additional external formwork 35
The additional external formwork 35 is fixed to the external formwork 23 by screwing in bolts 36 inserted through bolt holes in the supporting wall 33. The additional external formwork 35 is separated from the external formwork 23 to facilitate demolding.

A stay 37 is arranged inside the external formwork 23.
One end of the stay 37 abuts against the cross beam 21 and can be attached and detached using bolts and nuts 38. Stay 37
The other end is welded to the flange 25 to which the outer plate 39 is attached, and reinforcing materials 41 are arranged between the members on each side of the rectangular formwork that will become the concrete mold around the outer periphery of the outer formwork 23. Both ends of 41 are welded to the outer peripheral material of the external formwork 23 and the stay 37, respectively.
The stay 37 and the reinforcing member 41 are made of band steel or the like, but may be made of other shaped steel materials.

Although the external formwork 23 is not shown, generally an upper formwork, a lower formwork that descends outward to create a water gradient, and a vertical formwork are assembled in four directions to facilitate demolding.

The concrete formwork of the present invention constructed in this way has already been partially assembled, but once it is assembled as a whole, the cross beams 21 are inserted with bolts and nuts 22 from the openings of the inner plate 6 which is fixedly arranged. Insert the installed internal formwork 2 and attach the mounting flange 11
is brought into contact with the inner plate 6 and fixed with bolts and nuts 16 and 18. Next, the opening frame 3 is inserted into the fitting part 4 of the internal formwork 2 via the plywood 5. Then, the external formwork 2 is connected by aligning the additional external formwork 35 with the external formwork 23 and screwing the bolts 36 into the nuts 40.
When the partition member 27 of No. 3 and the inner flange 28 of the internal formwork 2 are brought into contact with each other, the stay 37 and the cross beam 21 are also brought into contact with each other.
Then, the internal formwork 2 is tightened with bolts and nuts 29 and 38.
and the external formwork 23 are fastened. and outer plate 39
is attached to the flange 25 of the external formwork 23 with bolts and nuts 26. In addition, chamfering material 4 for chamfering
2 is conveniently attached to the external formwork 23 in advance.

Concrete is poured vertically. Since the inner formwork 2 is fixed to the inner plate 6 and the outer formwork 23 is fixed to the inner formwork 2, the support is based on the indoor side, and the weight of the formwork itself and the weight of the opening frame 3 are initially based on the inside side. It is supported by plate 6. Inner plate 6, outer plate 39
At the stage where they are connected at intervals using separate stay bolts (not shown), they support each other as a whole.

To disassemble the concrete formwork, remove the bolts and nuts 26, remove the outer plate 39, and then remove the bolts 36. Remove bolt nuts 29 and 38. and internal formwork 2
If the frame is divided into upper and lower vertical formwork in the projected direction, remove the bolts and nuts 22 and remove the cross beam 21. When the internal formwork 2 is an integral type, the cross beam 21 remains fixed. Then unscrew the nut 16 and remove it. Either of the internal formwork 2 and the external formwork 23 may be demolded first. The internal formwork 2 is pulled out to the inside, the external formwork 23 is pulled out to the outside, and finally the added external formwork 3 is removed.
Take out 5. The hole in the inner plate 6 into which the nut 16 was inserted is plugged.

4 and 5 show other embodiments of the present invention, and FIG. 4 is an enlarged sectional view taken along the line AA in FIG. 1, and FIG. 5 is an enlarged sectional view taken along BB in FIG. 1. . Only the parts that are different from the first embodiment will be described. Fitting part 4 of internal formwork 2
does not extend to the same plane as the inner surface of the inner plate 6, but is bent toward the edge 7 to form a circumferential edge member 44.
Then, the edge 7, the inner surface of the inner plate 6 following the edge 7, the flange 11' that contacts the inner surface 8 of the opening frame 3 and surrounds the inner form 2, the fitting member 13', and the outer surface 10 that becomes the mold material part. 'A mounting type steel member 45 and a surrounding edge member 4
4 and the ends are welded to the mating member. Other than the above, this embodiment is the same as the first embodiment.

As described above, since the present invention provides a member for attaching the opening to the inner plate of the formwork used in the sash tipping method, the formwork attachment work can be performed by first setting the inner plate upright. Since the inner board is supported by the floor of the floor and the formwork is fixed to the inner board, the inner board side becomes a reference and the sash opening frame can be placed at a fixed position in the direction of projection. Since the inner formwork fits into the opening of the inner plate, the opening frame is accurately arranged. The same internal formwork can be used regardless of wall thickness. The pressure of poured concrete is firmly supported by the internal formwork 2 being fastened to the inner plate and by fitting the inner formwork into the opening of the inner plate. If the inner periphery of the fitting part of the internal formwork is connected with a cross beam, and the cross beam is connected to the stay fixed to the external formwork, the formwork divided into the inside and outside will be firmly connected, and the weight of the outside plate, concrete There is little deformation of the formwork due to pouring pressure. When a cross beam is provided, the inner formwork can be held by hand to align the inner formwork when inserting it into the inner plate opening, and the work can be carried out safely.

[Brief explanation of the drawing]

All drawings show embodiments of the present invention.
The figure is a front view seen from the inside of the opening, Figure 2 is an enlarged sectional view taken along line A-A in Figure 1, and Figure 3 is an enlarged cross-sectional view taken along line B-- in Figure 1.
B, FIG. 4, and FIG. 5 show other embodiments of the present invention. FIG. 4 is an enlarged sectional view taken along line A-A in FIG. 1, and FIG. 5 is taken along line B-B in FIG. It is an enlarged sectional view. 1... Opening, 2... Internal formwork, 3... Opening frame, 4... Fitting part, 5... Plywood, 6... Inner plate,
7... End edge, 8... Inner surface of opening frame, 9... Outer flange, 10... Outer surface, 11... Mounting flange, 12... Insulating material, 13... Fitting member, 14...
... Sleeve, 15 ... Cylindrical part, 16 ... Nut, 17 ... Holding plate, 18 ... Bolt, 19 ...
Bracket, 21... Cross beam, 22... Bolt nut, 23... External formwork, 24... Opening, 25...
... Flange, 26 ... Bolt nut, 27 ... Partition material, 28 ... Inner flange, 29 ... Bolt nut, 31 ... Lower frame of opening frame, 32 ... Screen door rail, 33 ... Supporting wall, 34 ... Water Return, 35... Additional external formwork, 36... Bolt nut, 37... Stay, 38... Bolt nut, 39... Outer plate,
40... Nut, 41... Reinforcement material, 42... Chamfered material, 44... Surrounding edge material, 45... Mounting type steel material.

Claims (1)

[Claims] 1. It has an inner plate, an inner formwork that supports the aluminum sash opening frame embedded in the wall opening, an outer formwork that is removably fixed to the inner formwork, an outer plate that is fixed to the outer formwork, and the inner plate is The inner side finishing base material is used as a concrete formwork, and an opening is provided in the inner plate, and the part of the inner formwork that supports the aluminum sash opening frame is inserted through the opening in the inner plate and extends to the inside. A formwork for use in the satsushi tip construction method, characterized in that the extended portion thereof is provided with a member for attaching to the inner plate.