JP3088713B2 - Formwork structure of concrete building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a formwork structure for a concrete building.

[0002]

2. Description of the Related Art Conventionally, when constructing a formwork of a concrete building, a plywood formwork panel has been widely used. As shown in FIG. 15, this formwork panel P made of plywood has a formwork plywood having a thickness of about 12 mm as a weir board P1,
Reinforcing piers P2 are nailed at the peripheral portion and the intermediate portion of the back surface of the weir plate P1. In order to connect the form panels P vertically and horizontally, the formwork panels P The crosspieces P2 are nailed together and joined. This formwork panel P is usually prepared in a fixed size according to the standard size of the formwork plywood, and a portion not conforming to the standard size is cut to an appropriate size by a worker at the site. used.

[0003] The plywood form panel P is maintained at a constant distance from each other via a space retainer such as a separator, and is provided on both sides of the form panel P in order to prevent the form panel P from being entangled by the lateral pressure of concrete. A vertical fluttering material and a horizontal fluttering material are applied in a lattice shape, and are erected by fastening them with a fastening tool such as a foam tie.
As the vertical flap material and the horizontal flap material, a wooden square bar, a steel single pipe (round pipe), or the like is usually used.

[0004]

However, according to the conventional formwork structure, nailing between the crosspieces P2 is indispensable to fix the formwork panels P which are vertically and horizontally adjacent to each other. There is a problem that a slight displacement occurs in the built-in position of the form panel P due to the impact, and it is difficult to correct the displacement. Also, when cutting and connecting the weir plate P1 of the part which does not conform to the standard dimensions of the formwork plywood at the site, it is necessary to attach the pier P2 to the back surface, which is very troublesome.

Further, when the mold is removed from the concrete after hardening, the form panel P is dismantled while prying the nails fixing the crosspieces P2 together with a bar.
Were often damaged, and the number of times of reuse was at most two or three. For this reason, the amount of waste materials disposed on site also increases, and there is a problem in that wood resources are wasted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and allows a barrier plate to be easily and accurately connected in a vertical and horizontal direction without using a nail, and the mold can be easily removed from a concrete structure. An object of the present invention is to provide a formwork structure of a building to improve workability in formwork work, and to increase the number of reuses of formwork materials to contribute to saving of timber resources.

[0007]

According to the first aspect of the present invention, there is provided a formwork structure for a concrete building, comprising a plywood for a formwork having a thickness capable of exhibiting sufficient strength and rigidity against concrete pressure. A formwork structure of a concrete building that is used as a weir plate and that holds the weir plate via a joiner having a substantially U-shaped cross-sectional concave portion that can be fitted to an edge portion of the weir plate, At least one joiner
The joiner has a substantially H-shaped cross section in which a pair of grooves are arranged back to back, and one of the grooves of the joiner is mounted on the foundation concrete or on the joint surface of the lower floor with the opening face downward. While being fitted to the easily crushable demolding spacer, the other groove is fitted to the lower edge of the weir plate with the opening surface facing upward, so that the weir plate is on the basic concrete or the foundation concrete. It is characterized by being erected on the joint surface of the lower floor.

According to a second aspect of the present invention, there is provided a formwork structure for a concrete building, wherein a plywood for a formwork having a thickness capable of exhibiting sufficient strength and rigidity against concrete pressure is used as a weir plate. A formwork structure of a concrete building that holds the weir plate through a joiner having a substantially U-shaped cross-sectional groove that can be fitted to an edge of the weir plate,
At least one type of joiner includes an upright plate formed by extending one concave groove portion, one side plate surrounding the concave groove portion to the back side of the concave groove portion, and a bottom plate surrounding the concave groove portion. And a bottom frame plate holding portion having an L-shaped cross section formed of a horizontal plate formed to extend on the opposite side of the plate, and the concave groove of the joiner is fitted to the upper edge of the weir plate with the opening surface facing down. And a peripheral portion of a bottom frame plate that supports a slab, a beam, or another projecting portion of a frame is mounted on the bottom frame plate holding portion of the joiner.

According to a third aspect of the present invention, a formwork plywood having a thickness capable of exhibiting sufficient strength and rigidity against concrete pressure is used as a dam board. A formwork structure of a concrete building that holds the weir plate through a joiner having a substantially U-shaped cross-sectional groove that can be fitted to an edge of the weir plate,
At least one type of joiner has two bottom plates facing each other at a predetermined interval, and two side plates facing each other by connecting both edges thereof. By forming two concave grooves with the opening surfaces facing in opposite directions, the respective concave grooves are fitted to the edges of the adjacent weir plates, whereby the weir plates are vertically or horizontally oriented. The two side plates are held together so as to be flush with each other in the direction.
Each of the bottom plates is cut at a substantially intermediate position, so that the weir plate can be removed from the cut portion.

According to the formwork structure (hereinafter simply referred to as a formwork structure) of a concrete building according to the present invention, a plywood for a formwork having a thickness capable of exhibiting sufficient strength and rigidity against concrete pressure. Is used as a weir plate, so that there is no need to provide a reinforcing bar on the back surface unlike the conventional form panel. Therefore, it can be built regardless of the front and back surfaces of the weir board, the workability of the building work can be improved, and the handling of the weir board itself becomes easy. Also,
Since the weir plate has sufficient strength and rigidity, it is possible to reduce the number of vertical and horizontal flutter materials to hold the built weir plate, and to reduce material costs and work costs. Will be possible.

[0011]

[0012]

[0013]

[0014]

Further, by holding a plurality of dams via several types of joiners suitable for each part of the building, the work of setting the dams is made more efficient. In addition, the holding of the weir plates can be performed by screwing the edges of the weir plates fitted into the concave grooves of the respective joiners from above the side plates of the concave grooves, so that the weir plates are connected to each other with nails or screws. Need not be fixed. Accordingly, the demolding operation after the concrete is hardened is also facilitated, and damage to the edge of the weir plate can be minimized, so that the number of times the weir plate can be reused can be increased more than before.

In particular, as in the first aspect of the present invention, by holding a part of the weir plate with an easily crushable demolding spacer interposed, the demolding spacer is first pushed out at the time of demolding. It is possible to break some of the dams to make them free, and to remove the dams sequentially from the part where the concrete surface is exposed. Alternatively, as in the invention as set forth in claim 3, the opening surfaces are directed in opposite directions to both sides of two bottom plates facing each other with a predetermined interval between the dam plates arranged vertically or horizontally. By interposing the joiners each having a concave groove formed therein, at the time of demolding, the side plate of the joiner is cut at a substantially intermediate position of the bottom plate, and the dam plate is freely released from the cut portion and sequentially removed. be able to. Thus, the demolding operation can be easily performed without prying the edge of the weir plate using a bar or the like, and the damper plate is prevented from being damaged and the demolding operation is further speeded up. be able to.

Styrofoam is particularly preferred as a material for the releasing spacer because it has relatively high compressive strength, is easily crushed, is inexpensive, and is easy to handle. Instead, it is also possible to use various low-density semi-rigid or hard foaming resins such as polyurethane foam, polypropylene foam, phenolic resin foam, and urea resin foam.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a dam plate 1 used in the formwork structure of the present invention. The weir plate 1 is made of a material that can exhibit sufficient strength and rigidity against concrete pressure so that it can be built alone without using a reinforcing bar. Specifically, among the plywoods conforming to the JAS standard as the plywood for the formwork, plywood having a thickness t of about 19 mm or more and a laminated number of seven ply (7 ply) or more is used.

The weir plate 1 is prepared in various sizes in advance according to a certain module such as a common height and a different width, and a common width and a different height. Are appropriately connected to each other and connected in series. The size of the weir plate 1 is cut using, for example, a so-called forty-eight plate having a width of 1210 mm x a height of 2420 mm, which is one of the standard finished products of formwork plywood.
There are several types such as mm and 450mm, and several types such as 500mm and 250mm with the maximum height of 2420mm.

The weir plate 1 has a plurality of separator insertion holes 11 for inserting a separator or the like so that a pair of weir plates 1 disposed opposite to each other with the concrete frame position therebetween can be held at a constant interval. Each is provided. Apart from the weir plate 1 used for special parts such as around pillars and corners, for the standard size weir plate 1, the separator insertion holes 11 are arranged in a plurality of rows and columns in principle, and the position is It is arranged so as to be vertically symmetric and left-right symmetric with respect to the outer shape of the plate 1.

A release agent for facilitating removal from the concrete after casting is applied to both surfaces of the dam plate 1.

Therefore, at least the standard size of the weir plate 1 can be used without distinction between front and back, top and bottom, left and right, and the work of installing the weir plate 1 can be made much more efficient. I have.

At the time of embedding, the weir plate 1 is held in a temporarily fixed state by using a special joiner prepared according to the thickness t of the weir plate 1.

The joiner is a long member having a thin and uniform cross section formed of resin or metal having sufficient strength and bending rigidity. As shown in FIGS. 2 to 5, five types of joiners 2 having different cross-sectional shapes are used. (2U, 2H, 2F, 2L,
2WH). The length is 5
Several types are prepared for each type of joiner 2 so as to correspond to the side length of the weir plate 1 of each size.

The joiner 2 shown in FIG. 2 is a groove member having a substantially U-shaped cross section, comprising a pair of side plates 21 facing each other, and a bottom plate 22 connecting the both side plates 21 at one side edge. Thus, the facing distance between the side plates 21 is slightly larger than the thickness t of the weir plate 1, and the groove 20 surrounded by the side plates 21 and the bottom plate 22 is fitted to the edge of the weir plate 1. It is supposed to be. The height of the side plate 21, that is, the depth of the groove 20 is set to be substantially the same as the thickness t of the weir plate 1. Hereinafter, this joiner 2 is referred to as a U-shaped joiner 2U.
That.

The joiner 2 shown in FIG. 3 is a member having a substantially H-shaped cross-section in which opposing side plates 21 extend on both sides of a bottom plate 22. Just two U-shaped joiners 2U are connected to each other by concave grooves. It has a shape that is integrated with the backs 20 facing each other. The facing distance between the side plates 21 is slightly larger than the thickness t of the weir plate 1 as in the case of the U-shaped joiner 2U, so that each groove 20 is just fitted to the edge of the weir plate 1. ing. However, one of the two concave grooves 20 (upper side in the figure) is formed at the same depth as the concave groove 20 of the U-shaped joiner 2U, and the other (lower side in the figure) is smaller than that. It is formed to be slightly shallower. Hereinafter, this joiner 2 is referred to as an H-shaped joiner 2H.

The joiner 2 shown in FIG. 4 is a member having a shape in which one side plate 21 and one bottom plate 22 of the U-shaped joiner 2U are respectively extended. As will be described later, the joiner 2 is often used with the opening surface of the concave groove portion 20 surrounded by the facing side plate 21 and the bottom plate 22 facing downward. An upright plate 23 formed by extending the
A horizontal plate 24 formed by extending the bottom plate 22 on the opposite side of the upright plate 23 is continuous in an L-shaped cross section, and a bottom frame plate holding portion 25 described later is formed here. This joiner 2
The shape of the concave groove 20 in the H-shaped joiner 2H
Is set to the same width and depth as the concave groove portion 20 having the smaller depth. Hereinafter, this joiner 2 is referred to as an F-shaped joiner 2F.

In the joiner 2 (2L) shown in FIG. 5, an inner L-shaped side plate 26 and an outer L-shaped side plate 27 each having an isosceles L-shaped cross section are respectively formed in two orthogonal directions. The U-shaped joiner 2U is arranged with the same width as the concave groove 20 of the U-shaped joiner 2U.
The corner portions 260 and 270 of the 27 are connected by a diagonal member 28. The outer L-shaped side plate 27 has the inner L
A bottom plate 29 protruding inward is formed on each surface, one by one, in accordance with a position where each surface of the shaped side plate 26 is extended outward. Therefore, these bottom plates 29
And the respective surfaces of the inner L-shaped side plate 26 and the respective surfaces of the outer L-shaped side plate 27 opposed thereto, two recessed groove portions 20 each having a partially open bottom surface are formed orthogonal to each other. ing. The depth of each groove 20 is formed to the same depth as the groove 20 of the U-shaped joiner 2U. Hereinafter, this joiner 2 is referred to as an L-shaped joiner 2.

However, in this L-shaped joiner 2,
Each bottom plate 29 forming the bottom surface of each groove 20 is provided with a groove 20.
It is sufficient if it serves as a stopper for the edge of the weir plate 1 to be inserted into, for example, one formed over the entire distance between the inner L-shaped side plate 26 and the outer L-shaped side plate 27, or One that protrudes outward from the inner L-shaped side plate 26 may be used. That is, this L
In the shape joiner 2, regardless of the projecting length of the bottom plate 29, the bottom plate 29 and the inner L-shaped side plate 26
It is assumed that the concave grooves 20 having a substantially U-shaped cross section are formed orthogonal to each other by the outer L-shaped side plate 27 and the outer side.

In the joiner 2 shown in FIG. 6, two H-shaped joiners 2H are combined and two side plates 2 are formed.
1 are continuous and integrated.
The two side plates 21 and the two bottom plates 22 form two concave groove portions 20 with the opening surfaces facing each other,
The width and depth of these grooves 20 are set to be the same as those of the shallower grooves 20 in the H-shaped joiner 2H. The distance between the two bottom plates 22 is set to be substantially the same as or slightly larger than the thickness t of the weir plate. The joiner 2 is made of resin, and is configured to be able to cut the side plate 21 with a cutter or the like at a substantially intermediate position between the two bottom plates 22. Hereinafter, this joiner 2 is referred to as a WH type joiner 2WH.
That.

Each of these joiners 2 (2U, 2H, 2
F, 2L, 2WH), the upper, lower, left and right edges of the dam plate 1 are fitted into the respective grooves, and screws are screwed from above one of the side plates 21 sandwiching the edges. . In this manner, the dam plate 1 and each joiner 2 are fixed in a temporarily fixed state, and when the mold is removed, the screws are removed and dismantled. The dismantled weir plate 1 and joiner 2 are each reused, but as will be described later, only the WH type joiner 2WH is cut at the time of demolding, so that it becomes a single-use disposable member.

Subsequently, each of these joiners 2 (2U, 2
H, 2F, 2L, 2WH), a formwork structure for holding the dam plate 1 will be described.

FIG. 7 shows a formwork structure forming a wall W and a slab S of a building constructed by the wall structure.

The release spacer 3 is disposed on the line of the wall form standing position set on the upper surface of the foundation concrete K or on the joint surface of the lower floor instead of this. The demolding spacer 3 is an elongated rod-shaped member made of styrene foam, has a square cross section, and is formed to have a width such that the width of each surface is just fitted into the groove 20 of each of the joiners 2. The release spacer 3 is laid without interruption along the line of the wall form standing position, and is temporarily fixed on the upper surface of the foundation concrete K or the joint surface by nailing or an adhesive.

The H-shaped joiner 2H is mounted on the release spacer 3 such that one of the concave grooves 20 is fitted into the release spacer 3 from above. At this time, the H-shaped joiner 2H is attached with the shallow concave groove portion 20 facing downward. for that reason,
A slight gap is formed between the lower edge of the H-shaped joiner 2H and the upper surface of the foundation concrete K or the joint surface, and a part of the side edge portion of the release spacer 3 can be seen from this gap. It has become. That is, the release spacer 3 can be easily crushed by inserting a sharp rod from the gap, and the like. As a result, each of the dams 1 connected upward can be sequentially and freely removed from below so that they can be easily removed.

The other groove 20 of the H-shaped joiner 2H has its opening face upward, and the lower edge of the weir plate 1 forming the wall W is inserted into this groove 20 so that H It is screwed on the side plate 21 of the shape joiner. Wall W
Is composed of upper and lower stages, and in the illustrated embodiment, for example, a lower stage weir plate 1a having a height of about 500 mm,
Height formed according to the size of forty-eight formwork plywood
It is set so as to secure the wall height corresponding to the floor height by vertically connecting the upper dam plate 1b of 2420 mm. Lower dam 1a
An H-shaped joiner 2H is also provided between the upper dam board 1b and the upper dam board 1b, and the upper edge of the lower dam board 1a and the lower edge of the upper dam board 1b are fitted into the respective grooves 20. The upper weir plate 1a and the lower weir plate 1b are held so as to be flush with each other in the vertical direction. At this time, in the illustrated embodiment, the concave groove portion 20 of the H-shaped joiner 2H is fitted to each edge of the dam plate 1 with the shallow side down and the deep side up. There is no particular problem if this posture is turned upside down.

As described above, the weir plate 1 forming both surfaces of the wall W
Is temporarily erected via the H-shaped joiner 2H,
It is held opposite to the line of the wall form standing position. In the horizontal direction, the weir plate 1 is continuously provided in a state where the end faces of the vertical edges are abutted with each other, except for a special portion where a WH joiner 2WH described later is interposed. Therefore,
Adjoining edges are not joined by nails or screws. The distance between the opposing weir plates 1 is the separator 41
While being kept constant through the like, it is tied by the foam tie 42. A vertical flap material and a horizontal flap material (not shown) are arranged at appropriate intervals on the outside of the weir plate 1, and the flute material and the form tie 42 are clamped to fix the weir plate 1. The formwork of the wall W thus built is reinforced by other supports (not shown) as necessary.

Further, a mold for forming the slab S of the upper floor is continuously formed at the uppermost portion of the mold of the wall W. Therefore, an F-shaped joiner 2F is provided on the upper edge of the weir plate 1 (1b).
Is fitted with the opening of the groove 20 facing downward, and is screwed to the weir plate 1b from above the side plate 21. The F-shaped joiner 2F is mounted with the upright plate 23 raised along the surface of the wall W and the horizontal plate 24 protruding toward the outside of the wall W. An L-shaped bottom frame plate holding portion 25 is formed. An edge of the bottom frame plate 5 forming the lower surface of the slab S is mounted on the bottom frame plate holding portion 25 and screwed, supported by a support 6 or the like, and held horizontally. The bottom frame plate 5 may be, for example, one in which a reinforcing pier is nailed to a peripheral portion and an intermediate portion of a lower surface of a general formwork plywood, and has sufficient strength and rigidity without a pier. It may be made of plywood for formwork or other plate materials.

At the slab edge Sa protruding in a cantilever manner, a U-shaped joiner 2U is provided on the upper surface of the bottom frame plate 5a for supporting the protruding slab S, with its concave groove 20a.
The bottom surface plate 22 is attached to the bottom frame plate 5a by screws. And
Weir plate 1 (1) having a height approximately equal to the slab thickness
c) the lower edge of the groove 2 of the U-shaped joiner 2U.
The slab edge Sa is formed by being inserted and screwed into the slab 0 and being held upright by a support member (not shown) or the like.

FIG. 8 shows a modification of the formwork structure shown in FIG. 7, showing the formwork structure at the joint between the wall W and the slab edge Sa.

In this embodiment, an F-shaped joiner 2F with the opening surface of the concave groove portion 20 facing downward is fitted to the upper edge of the dam plate 1 (1b) forming the outer surface of the wall W, and is screwed. Then, the bottom frame plate 5b projecting outward from the wall W is attached to the bottom frame plate holding portion 25 of the joiner 2, and the opening surface of the groove 20 is also directed upward on the upper surface of the bottom frame plate 5b. The F-shaped joiner 2F is attached, and the weir plate 1c that forms the outer surface of the wall W is inserted by inserting the weir plate 1c that forms the slab edge Sa into the groove 20 of the F-shaped joiner 2F. And the weir plate 1 (1c) forming the slab edge Sa are held so as to form the same vertical plane. Slab edge S erected above the bottom frame plate 5b
The uprightness of the dam plate 1 (1c) forming a is maintained by a support member (not shown) provided on the bottom frame plate 5b.

The weir plate 1 (1) forming the inner surface of the wall W
Similarly to the above, a bottom frame plate 5 forming a slab S of an upper floor is connected to an upper portion of b) via an F-shaped joiner 2F.

In this embodiment, a weir having the same height as the thickness of the bottom frame plate 5b is provided on the upper edge of the weir plate 1 (1b) forming the outer surface of the wall W via an H-shaped joiner 2H. It is also possible to erect the plate 1 and further erect a dam plate 1c on which the slab edge Sa is formed via another H-shaped joiner 2H.

FIG. 9 shows a formwork structure at a corner portion and an intersection portion of a wall W of a building similarly constructed with a wall structure.

At the corners and intersections of the wall W, the weir plates 1 forming the outer surface or the inner surface of the wall W are connected so as to form an outgoing corner and an ingoing corner, respectively, as shown in the figure. And a pair of weir plates 1 adjacent to each other with the entry corner interposed therebetween, each groove 20 of the L-shaped joiner 2L erected at each exit corner or entry corner.
By inserting each vertical edge into the screw and screwing it,
They are held orthogonal to each other. This L-shaped joiner 2
Since L forms the corners 260 and 270 whose surfaces are bent at right angles on both the outside and the inside, L can be used irrespective of the inside and outside of the corner.

In the formwork of the wall W, a WH type joiner 2WH is provided at each of about one inside and outside for each wall formed between corners and intersections. This W
The H-shaped joiner 2WH is, for example, fitted vertically between adjacent vertical edges of the weir plate 1 arranged near a corner portion or an intersection portion on both the inside and outside surfaces of the wall W. And
At the time of demolding, the side plate 21 is cut by a cutter at a substantially intermediate position between the two opposing bottom plates 22, so that a part of the weir plate 1 connected in the left-right direction is free, and from here on, The weir plate 1 can be removed.

FIG. 10 shows a formwork structure for forming a wall W, a beam shape B and a slab S of a building constructed by a column / beam frame structure.

Also in the formwork of the building having the column and beam rigid frame structure, the formwork forming the wall W is such that the distance between the opposing dam plates 1 is somewhat narrower than that of the building form having the wall structure. Except for this, it is basically held by the same structure as that of the wall structure.

In the beam-shaped B portion, a bottom frame plate forming the bottom of the beam-shaped B via an F-shaped joiner 2F fitted to the upper edge of the weir plate 1 (1b) forming the inner surface of the wall W 5c, and a dam plate 1 (1d) forming the side surface of the beam shape B is held via a U-shaped joiner 2U attached to the upper surface of the bottom frame plate 5c. Further, a bottom frame plate 5 forming the lower surface of the slab S is held via an F-shaped joiner 2F fitted to the upper edge of the weir plate 1 (1d) forming the side surface of the beam shape B.

The weir plate 1 (1) forming the outer surface of the wall W
a, 1b, 1e) are held so as to form the same vertical plane via an H-shaped joiner 2H.

FIG. 11 shows a modification of the formwork structure shown in FIG. 10 and shows a formwork structure of the beam form B portion when the beam form B is formed outside the wall W.

In this embodiment, a bottom frame plate 5c that forms the bottom of the beam shape B through an F-shaped joiner 2F fitted to the upper edge of the weir plate 1 (1b) that forms the outer surface of the wall W Is attached, and U attached to the upper surface of the bottom frame plate 5c is attached.
A dam plate 1 (1f) forming the side surface of the beam shape B is held via the shape joiner 2U.

The weir plate 1 (1) forming the inner surface of the wall W
In b), a weir plate 1 (1 g) is extended via an H-shaped joiner 2H and is raised upward by the height of the beam shape B. The F fitted to the upper edge of the weir plate 1 (1 g)
A bottom frame plate 5 that forms the lower surface of the slab S is held via the shape joiner 2F.

FIG. 12 also shows a modification of the formwork structure shown in FIG. 10 and shows a formwork structure of the beam form B portion when a beam form B is formed in the middle part of the slab S.

The bottom of the beam shape B is formed by a bottom frame plate 5d supported by the support 6, and the bottom frame plate 5d
A dam plate 1 (1d) that forms both side surfaces of the beam shape B is held via a U-shaped joiner 2U attached to the upper surface of the beam shape B. And weir plate 1 forming both side surfaces of these beam shapes B
(1d) A bottom frame plate 5 forming the lower surface of the slab S is connected to the upper edge of the slab S via an F-shaped joiner 2F.

FIG. 13 shows that a pillar C is formed at the corner of a wall W of a building constructed by a column / beam frame structure.
14 shows the formwork structure of the columnar C portion provided inside the corner portion of the wall W. FIG. 14 also shows the columnar C portion provided when the columnar shape C is provided outside the corner portion of the wall W. 1 shows a formwork structure.

In these embodiments, the outer corner and the inner corner of the weir plate 1 forming the respective surfaces are formed around the column C and at the joint between the column C and the wall W. Also in this case, similarly to the formwork structure shown in FIG. 9, a pair of weir plates 1 adjacent to each other with the projecting corner and the entering corner interposed therebetween are formed by the L-shaped joiner 2L which is erected at each projecting or entering corner. The respective vertical side edges are fitted into the respective concave groove portions 20 to be held orthogonally to each other.

Further, in the vicinity of the columnar shape C, the WH-type joiner 2 is appropriately attached to the vertical edge of the weir plate 1 forming the inner and outer surfaces of the wall W.
The WH is provided so that the work of removing the weir plate 1 can be easily performed.

As described above, several types of joiners 2 (2U, 2H, 2F, 2F) prepared so as to be properly used according to each part of the concrete building.
L, 2WH) to hold the dam 1 (1a, 1b, 1c...), It is possible to perform the work of setting the dam 1 very efficiently. In addition, since the dams 1 are not nailed to each other, it is easy to remove the mold after the concrete is hardened.

Further, by holding a part of the weir plate 1 with a spacer 3 for easy removal and a spacer WH-type joiner 2WH which can be cut, the spacers 3 for removal are first used when removing the mold. The WH joiner 2WH is removed, and some of the dams 1 are made free, and the dams 1 can be sequentially removed from the portion where the concrete surface is exposed. Therefore, the demolding operation can be easily performed without prying the edge of the weir plate 1 using a bar or the like, and damage to the weir plate 1 can be minimized.

In this way, the workability in the formwork is improved, and at the same time, the number of reuses of the dam plate 1 is increased,
Wood resources can also be saved.

[0063]

According to the formwork structure of a concrete building according to the present invention, since a weir plate having sufficient strength and rigidity is held via a dedicated joiner, the efficiency of the work of laying the weir plate is improved. And damage to the weir plate can be minimized. Also, at the time of demolding, it is possible to easily demold the dam without damaging the dam plate. In this way, it is possible to improve the workability in the formwork work, and at the same time, increase the number of times that the weir plate is reused, thereby contributing to the saving of wood resources.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a dam plate used for a formwork structure of a concrete building according to the present invention.

FIG. 2 is a sectional view of a U-shaped joiner used for the mold structure.

FIG. 3 is a sectional view of the H-shaped joiner.

FIG. 4 is a sectional view of an F-shaped joiner.

FIG. 5 is a sectional view of the L-shaped joiner.

FIG. 6 is a sectional view of the WH type joiner.

FIG. 7 is a sectional view showing an embodiment of a formwork structure of a concrete building according to the present invention, which is a longitudinal sectional view of a formwork forming a wall and a slab of a building constructed by a wall structure.

FIG. 8 also shows a building constructed by a wall structure,
It is a longitudinal cross-sectional view of the formwork which forms the joining part of a wall and a slab edge part.

FIG. 9 also shows a building constructed by a wall structure.
It is a cross-sectional view of the formwork which forms the corner part and intersection of a wall.

FIG. 10 is a vertical sectional view of a formwork forming a wall, a beam shape, and a slab of a building constructed by the column / beam rigid frame structure.

FIG. 11 is a modification of the embodiment shown in FIG. 10,
It is a longitudinal cross-sectional view of the formwork which forms the beam-shaped part when a beam-shaped is formed outside the wall.

FIG. 12 is a modification of the embodiment shown in FIG. 10,
It is a longitudinal cross-sectional view of the formwork which forms the beam-shaped part at the time of forming a beam-shaped part in the middle part of a slab.

FIG. 13 is a cross-sectional view of a formwork forming the columnar portion when the columnar portion is provided inside the corner portion of the wall at the corner portion of the wall of the building constructed by the column / beam frame structure. It is.

FIG. 14 is a cross-sectional view of a formwork forming the columnar portion when the columnar portion is provided outside the corner portion of the wall at the corner of the wall of the building constructed by the column / beam frame structure. It is.

FIG. 15 is a perspective view of a plywood form panel used in a conventional concrete building form structure.

[Explanation of symbols]

 1 (1a, 1b, 1c, 1d ...) Weir plate 2 Joiner 20 Depressed groove 21 Side plate 22 Bottom plate 23 Upright plate 24 Horizontal plate 25 Bottom frame plate holding part 260, 270 Corner part 2F F type joiner 2H H type joiner 2L L-type joiner 2U U-type joiner 2WH WH-type joiner 3 Demolding spacer 5, 5a, 5b, 5c, 5d Bottom frame plate C Column type B Beam type K Foundation concrete S Slab

Claims (3)

(57) [Claims] 1. A substantially U-shaped cross section capable of using a plywood for a mold having a thickness capable of exhibiting sufficient strength and rigidity against the pressure of concrete as a weir plate and being fitted to an edge of the weir plate. A formwork structure for a concrete building that holds said weir plate via a joiner having a concave groove portion, wherein at least one type of joiner has a pair of concave portions
With a substantially H-shaped cross-section
One of the grooves faces the opening
Easy crushing mounted on the joint surface of the upper or lower floor
And the other concave groove
Is fitted to the lower edge of the weir plate with the opening face up.
And the barrier plate is above or below the foundation concrete.
A formwork structure of a concrete building characterized by being erected on a joint surface of a story floor . 2. Sufficient strength and strength for concrete pressure
Plywood for formwork with a thickness that can exhibit high rigidity
And a U-shape that can be fitted to the edge of this weir plate
The barrier plate is held via a joiner having a concave groove section.
A formwork structure for a concrete building having at least one type of joiner, wherein one
One side plate surrounding the groove extends to the back side of the groove,
The upright plate and the bottom plate surrounding the groove are formed as described above.
A cross-section consisting of a horizontal plate formed on the opposite side of the upright plate
An L-shaped bottom frame plate holding portion, and
The groove is fitted on the upper edge of the weir plate with the opening face down
At the same time, the bottom of the joiner
Bottom frame to support the overhang of beam or beam or other frame
Concrete characterized by the edge of the plate being mounted
Formwork structure of built building. 3. Sufficient strength and strength for concrete pressure
Plywood for formwork with a thickness that can exhibit high rigidity
And a U-shape that can be fitted to the edge of this weir plate
The barrier plate is held via a joiner having a concave groove section.
A formwork structure of a concrete building to be carried, wherein at least one type of joiner is provided at a predetermined interval.
Connect the two facing bottom plates and their both edges
And two side plates facing each other.
Two places where the opening faces are opposite to each other by the face plate
Groove portions are formed , and each of these groove portions is adjacent to the weir plate.
Are fitted to the edges of the
It is held in such a way that it is flush or downward.
When removing the mold, the two side plates are
By cutting each at approximately the middle of the bottom plates
So that weirs can be removed from this cut
Concrete building mold characterized by being made
Frame structure.