JP2001200606A - Form and form construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve work efficiency by dispensing with a demolition work for a form, and reduce material by dispensing with temporary material for timbering such as a batten material or the like. SOLUTION: A form side plate is taken as a placing form, an outer placing form of a skeleton is formed of an extruded cement forming plate 1 functioning as an outer wall and made of incombustible material, an inner placing form of the skeleton is formed of a foamed polystyrene plate 2 functioning as an inner wall and made of heat insulating material, and both outer and inner placing forms of the skeleton are bound by a draw separator 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a formwork and a formwork method used in construction of RC (reinforced concrete) structures.

[0002]

2. Description of the Related Art In formwork for building walls of a general RC (reinforced concrete) building, veneer plywood is used as a side plate to maintain the shape of concrete to be cast.
A plastic plate or a steel plate is disposed facing each other, and the facing members are held at predetermined positions by a support using a thick end material or the like. And concrete is poured, and after hardening, the side plate is dismantled and removed.

[0003]

In the conventional formwork,
It requires temporary materials for shoring such as side plates and thick ends to be used only as a formwork, and requires work for assembling and supporting the side plates and demolding work for disassembling them, resulting in poor workability. Also, the construction period becomes longer.

An object of the present invention is to eliminate the disadvantages of the prior art, eliminate the need for dismantling the formwork, improve workability, and eliminate the need for temporary materials such as thick ends for supporting works. An object of the present invention is to provide a formwork and a formwork method capable of saving cost.

[0005]

According to the present invention, there is provided a non-combustible material which functions as a formwork, firstly, a formwork side plate as a driving formwork, and a driving formwork on the outside of the body as an outer wall. The main point is that the driving formwork on the inner side of the skeleton is made of a heat insulating material that functions as an inner wall, and both the driving formwork on the outer side of the skeleton and the inner side of the skeleton are pulled and connected by a separator.

[0006] Second, the driving form on the outer side of the frame is formed by an extruded cement molding plate, the driving form on the inner side of the frame is formed by an expanded polystyrene plate, and one end of a separator is fixed to the expanded polystyrene plate. The present invention is characterized in that a mounting groove for a fixing member for a pull separator is formed on the inner surface of the extruded cement molded plate, and the other end of the pull separator is fixed to the fixing member mounted in the mounting groove.

Thirdly, the extruded cement molded plate is formed to be vertically long, and a plurality of longitudinally extending ridges and grooves are alternately provided on the inner surface, and the mounting grooves of the fixing member of the separator are pulled on the ridges. The gist is that it is formed in the vertical direction.

[0008] As a construction method, after arranging the wall reinforcement, a plurality of extruded cement molding plates in which a fixing member of the pull separator is set in the mounting groove are erected as a driving formwork on the outside of the frame, and one end of the pull separator is fixed. The gist of the present invention is to fix the other end of the draw separator to a fixing member while laying the plate as a driving form inside the frame one step at a time from the bottom.

According to the first aspect of the present invention, the non-combustible material functioning as an outer wall is used as a driving form on the outside of the skeleton, and the heat insulating material functioning as an inner wall is used as a driving form on the inside of the skeleton.
After the concrete is cast, the formwork itself becomes the outer and inner walls of the skeleton by pulling the formwork outside and inside of the structure together with a separator, so there is no need to dismantle the formwork. In addition, since the pull separator is buried in the concrete, it is not necessary to use the conventional thick support material.

According to the second aspect of the present invention, in addition to the above-mentioned functions, the fire-resistant performance of the outer wall required for the building is ensured by forming the driving form on the outer side of the skeleton with an extruded cement molding plate. In addition, by forming the driving formwork on the inner side of the skeleton with a foamed polystyrene plate, the heat insulation performance of the inner wall required for the building can be secured. At the same time, by utilizing the strength of the expanded polystyrene plate and the extruded cement molded plate itself, a pull separator is arranged between the two so that they are attracted to each other, thereby withstanding the lateral pressure during concrete casting.

According to the third aspect of the present invention, in addition to the above operation, an arbitrary mounting groove is selected and the fixing member is slid along the mounting groove to dispose the fixing member at an arbitrary position. it can. In addition, since the mounting groove is formed in the ridge provided on the extruded cement molded plate, there is no possibility that the strength of the extruded cement molded plate is reduced by the formation of the mounting groove.

According to the fourth aspect of the present invention, since the formwork is a work of erection of the outer wall and the inner wall of the frame, the work process can be reduced, and the draw separator has one end previously formed on the expanded polystyrene plate on the inner wall side. The fixing member, which is fixed and the other end of which is fixed, may be slid to the other end position of the pull separator along the inner surface of the extruded cement molding plate on the outer wall side, so that the pull separator is easily attached. In addition, the pull separator can be fixed to the extruded cement molded board by inserting a hand between the wall streaks while the foamed polystyrene board on the inner wall side is built up one step at a time, so one end is fixed in advance to the foamed polystyrene board. There is no problem.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a formwork of the present invention. The formwork of the present invention is a non-combustible material that functions as an outer wall, with a formwork on the outer side of the structure being a driving formwork implemented on, for example, a wall formwork of a building structure. It is composed of an extruded cement molded plate 1 and a foamed polystyrene plate 2 which is a heat insulating material functioning as an inner wall with a mold inside the skeleton.

The extruded cement molded plate 1 is shown in FIGS.
As shown in the example, the overall height is 3000mm and the width is
It is formed into a vertically long rectangle with a thickness of about 300 mm and a thickness of about 20 mm.
(In the example shown, four grooves 3 and three ridges 4)
And mounting grooves 5 for mounting fixing members of a pull separator, which will be described later, are provided in the protrusions 4 located on both sides in a T-shaped cross section in the length direction. In the figure, reference numeral 6 denotes a fitting ridge formed on one side end of the extruded cement molded plate 1, and reference numeral 7 denotes a groove formed on one side end of the extruded cement molded plate 1 and fitted with the ridge 6. Indicates the article.

As shown in FIGS. 3 to 6, the expanded polystyrene plate 2 is formed into a horizontally long rectangle having an overall height of about 300 mm, a width of about 1400 mm and a thickness of about 50 mm by using a styrofoam as an example. In this case, a protruding portion as a fixing portion 8 of the pulling separator described later is provided on the inner surface.

In the illustrated example, a plurality (three in the illustrated example) of fixing parts 8 arranged side by side in the height direction of the expanded polystyrene plate 2 are arranged side by side in a plurality of rows (in the illustrated example). In this example, six rows are arranged side by side), and a plurality of locking holes 8a are formed in a rectangular parallelepiped shape in the vertical direction.

In the figure, reference numeral 9 denotes a fitting protrusion protruding from the upper surface of the expanded polystyrene plate 2, and reference numeral 10 denotes a concave groove formed on the bottom surface and fitted with the protrusion 9.

FIG. 7 shows a fixing member 11 for a pull separator which is mounted on a driving formwork by the extruded cement molding plate 1. The fixing member 11 is formed of, for example, a plastic molding material, and has a flat main body 11a. A flat T-shaped locking portion 11 protruding from the rear side of the main body portion 11a and mounted in the mounting groove 5.
b. The main body 11a has a locking portion.
The locking portion 11c for fixing the separator was protruded in the direction opposite to the direction 11b. The locking portions 11c are formed by providing three flat plate-shaped ones horizontally at appropriate intervals.
Is provided with a plurality (three in the illustrated example) of locking holes 11d.

FIG. 8 shows a pull separator 12, which is formed as a steel bar, for example, in a U-shape with both ends bent at right angles, and these bent portions 12a, 12b are formed into locking holes 11d of the extruded cement molding plate 1. And a locking portion to the locking hole 8a of the expanded polystyrene plate 2.

Next, the stamping mold formed by the extruded cement molded plate 1, the stamping mold formed by the expanded polystyrene plate 2, the pull separator 12, and the fixing member 11 for the pull separator.
Fig. 9 to Fig. 9 show the construction method of assembling the wall formwork of the building frame using
11, FIG. 1 will be described. In FIG. 9, reference numeral 13 denotes a slab which has already been constructed, and the slab 13 has a wall reinforcing bar from the lower floor.
14 fixings protrude. In this state, first, the slab 15 is used for embedding the wall to be constructed in the future.
Perform on 13.

After the siding 15 before the wall is built, the pier 16 is fixed to the slab 13 in accordance with the position of the siding 15. In this case, the width obtained by adding the width (thickness) of the driving form formed by the extruded cement molded plate 1 and the driving form formed by the expanded polystyrene plate 2 to the width of the skeleton wall is the width between the two piers 16.

Next, as shown in FIG. 10, a wall reinforcing bar 14 is arranged. This arrangement is usually performed at a pitch of 200 mm.

On the other hand, a T-shaped locking portion 11b of a fixing member 11 for a pull separator is inserted in advance into the mounting groove 5 of the driving form by the extruded cement molding plate 1, and the fixing member 11 is extruded. , And the locking portion 11c for fixing the pull separator is projected inward. Also, on the side of the punching formwork by the expanded polystyrene plate 2, one bent portion 12b of the pull separator 12 is inserted into the locking hole 8a of the fixing portion 8 of the pull separator 12, and one end of the pull separator 12 is connected to the expanded polystyrene plate 2 Fixed to.

Then, a driving form made of the extruded cement molded plate 1 on which the fixing member 11 is mounted is arranged on the outer wall side as shown in FIG. At this time, a temporary stay such as a stay rope is taken to prevent the driven formwork from falling over by the extruded cement molded plate 1. In this case, the extruded cement molded plate 1 is erected, for example, three in succession so that the lateral length is equal to the lateral width of the driving form by the expanded polystyrene plate 2, and the adjacent extruded plate is formed. The connection of the cement molding plate 1 is performed by fitting a ridge 6 and a groove 7 provided on the side end of the extruded cement molding plate 1.

Further, as shown in FIG.
A driving form made of the expanded polystyrene plate 2 to which one end of 12 is fixed is erected on the inner wall side. In this case, a single-staged formwork made of a horizontally long expanded polystyrene plate 2 is erected, and the fixing hole of the fixing member 11 fixed to the already-implanted formwork of the extruded cement molded plate 1 on the outer wall side. The bent portion 12a at the other end of the separator 12 is inserted into 11d.
As a result, the driving form made of the expanded polystyrene plate 2 is tightly connected to the driving form made of the extruded cement molded plate 1 via the pulling separator 12.

At this time, the fixing member 11 needs to be located at a position facing the fixing portion 8 protruding from the driving formwork made of the expanded polystyrene plate 2. For this purpose, a flat plate 17 that can be inserted into the mounting groove 5 is required. Are separately prepared, and are disposed below or between the fixing members 11 to be inserted into the mounting grooves 5,
The position of the fixing member 11 in the vertical direction is adjusted.

Adjustment of the horizontal position of the fixing member 11 is performed by appropriately selecting one of the plurality of mounting grooves 5 that faces the fixing portion 8.

Although the locking portion 11c of the fixing member 11 is provided in three stages, it is not necessary to always lock the pulling separator 12 in all the locking holes 11d provided in the three-stage locking portion 11c. Depending on the height of the wall to be cast, for example, when the form of the extruded cement molding plate 1 on the outer wall side is 3-4 m or more, three steps are required so that different lateral pressures can be resisted depending on the amount of concrete to be poured. Although the number of pulling separators 12 is increased by using all the locking holes 11d, when the length is 3 m or less, lateral pressure can be resisted only by locking the pulling separators 12 into the upper and lower locking holes 11d.

In this way, if the driving form of the expanded polystyrene plate 2 built on the inner wall side is tightened to the driving form of the extruded cement molded plate 1 on the outer wall side, the foamed polystyrene plate 2 of the second step is used. Build a driving formwork. The second-stage expanded polystyrene plate 2 is vertically joined by fitting the concave groove 10 provided on the bottom surface with the projection 9 projecting from the upper surface of the first-stage expanded polystyrene plate 2.

The work of connecting the pull separator 12 to the fixing member 11 as described above is performed by inserting a hand between the wall reinforcing bars 14 from the inner wall side.
Since they are arranged at a pitch of mm, they do not hinder the work.

As described above, the driving form made of the expanded polystyrene plate 2 is erected on the inner wall side, and the pulling separator 12 is tied to the driving form formed by the extruded cement molded plate 1 erected on the outer wall side to form the wall form. Once assembled, cast concrete. The driving form is composed of an expanded polystyrene plate 2 and an extruded cement molded plate 1, and the fixing member 11 of the pull separator 12 is also a plastic molded material.
The strength to withstand the lateral pressure of cast concrete can be secured.
Further, since the lower part of the expanded polystyrene plate 2 and the lower part of the extruded cement molded plate 1 are held down by the pier 16 on the outside, the lower part of the expanded polystyrene plate 2 and the lower part of the extruded cement molded plate 1 may spread outward by casting concrete. Will be blocked.

After the concrete is hardened, the formwork of the extruded cement molding plate 1 becomes the outer wall as it is, the formwork of the expanded polystyrene plate 2 forms the inner wall as it is, and the pull separator 12 and the fixing member 11 are buried in the concrete as it is. Is done. Therefore, there is no need to dismantle the formwork.

In the above embodiment, the pull separator 12 is used.
Is formed in a U-shape to be locked in the locking holes 8a, 11d, but the present invention is not limited to this, and bolting is also possible.

[0034]

As described above, the formwork of the present invention is a cast-in formwork, and after casting concrete, the formwork itself becomes the outer and inner walls of the skeleton, so it is necessary to dismantle the formwork. In addition, since the draw separator is buried in the concrete, it is not necessary to provide a conventional support with thick ends. And, since the formwork to be the outer wall is made of non-combustible material, and the formwork to be the inner wall is made of heat insulating material, it also has functions as an outer wall and an inner wall. Eliminating the formwork after casting is unnecessary, and the workability is improved.

Furthermore, by using a foamed polystyrene plate as the inner wall-side mold and an extruded cement molded plate as the outer wall-side mold, it is possible to use the strength of these members themselves and to arrange a separator between them. By attracting each other, it withstands lateral pressure during concrete casting.

Further, since the fixing member of the pull separator can be arranged at a predetermined position simply by sliding along the mounting groove, the installation is easy, and even if the operation is performed by inserting a hand between the wall reinforcing bars. Workability does not decrease. Since the mounting groove is formed in the ridge provided on the extruded cement molded plate, there is no possibility that the strength of the extruded cement molded plate is reduced by the formation of the mounting groove.

As for the method of construction, the formwork is a work of embedding the outer and inner walls of the skeleton, and it is not necessary to dismantle the formwork after casting concrete, so that the work process can be reduced, the workability is improved, and the work period is shortened. it can.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a formwork and a formwork method of the present invention.

FIG. 2 is a plan view of a driving form made of an extruded cement molded plate, which is a main part of the form of the present invention.

FIG. 3 is a front view of a driving form made of a foamed polystyrene plate, which is a main part of the form of the present invention.

FIG. 4 is a plan view of a driving form made of a foamed polystyrene plate, which is a main part of the form of the present invention.

FIG. 5 is a bottom view of a driving form made of a foamed polystyrene plate, which is a main part of the form of the present invention.

FIG. 6 is a side view of a driving form made of a foamed polystyrene plate, which is a main part of the form of the present invention.

FIG. 7 is a perspective view of a fixing member for a pull separator, which is a main part of the formwork of the present invention.

FIG. 8 is a perspective view of a pull separator, which is a main part of the mold of the present invention.

FIG. 9 is a perspective view showing a first step of the formwork method of the present invention.

FIG. 10 is a perspective view showing a second step of the formwork method of the present invention.

FIG. 11 is a perspective view showing a third step of the formwork method of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Extruded cement molding board 2 ... Foam polystyrene board 3 ... Groove 4 ... Protrusion 5 ... Mounting groove 6 ... Protrusion 7 ... Groove 8 ... Fixing part 8a ... Locking hole 9 ... Protrusion 10 ... Concave groove 11 ... Fixation Member 11a: Main body 11b: Locking portion 11c: Locking portion 11d: Locking hole 12: Pulling separator 12a, 12b: Bending portion 13: Slab 14: Wall reinforcing bar 15: Sumi out 16: Paving board 17: Flat plate

Continuing from the front page (72) Inventor, Juichi Oshimi 4-51, Otacho, Naka-ku, Yokohama-shi, Kanagawa Prefecture, Kashima Construction Co., Ltd. Yokohama Branch (72) Inventor Yasuo Ishiyama 2-9-1, Kikugawa, Sumida-ku, Tokyo Shares Company Ishiyamauchi (72) Inventor Izumi Horio 1-13-13 Shiba Park, Minato-ku, Tokyo Inside Showa Denko Kenzai Co., Ltd.

Claims (4)

[Claims] 1. The form side plate is a driving form, the driving form on the outside of the skeleton is made of a non-combustible material that functions as an outer wall, and the driving form on the inside of the skeleton is made of a heat insulating material that functions as an inner wall, A formwork characterized in that both the driving formwork on the outside of the structure and the inside of the structure are pulled together and connected by a separator. 2. The driving form on the outer side of the skeleton is formed by an extruded cement molded plate, the driving form on the inner side of the skeleton is formed by a foamed polystyrene plate, and one end of a separator is fixed to the expanded polystyrene plate, and 2. The mold according to claim 1, wherein a mounting groove for a fixing member of the pull separator is formed on an inner surface of the extruded cement molded plate, and the other end of the pull separator is fixed to the fixing member mounted in the mounting groove. 3. The extruded cement molding plate is formed in a vertically long shape, and a plurality of longitudinally extending ridges and grooves are alternately provided on an inner surface, and the mounting grooves of the fixing member of the separator are pulled in the ridges. The mold according to claim 2, wherein the mold is formed in a form. 4. After arranging the wall reinforcement, a plurality of extruded cement molded plates in which a fixing member of the pull separator is set in the mounting groove are erected as a driving form on the outer side of the skeleton, and an expanded polystyrene plate having one end of the pull separator fixed. A formwork method comprising fixing the other end of a pulling separator to a fixing member while laying one step at a time from the bottom as a driving form inside the skeleton.