JPH044426B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to formwork panels for concrete.
More particularly, the present invention relates to concrete formwork panels suitable for use in forming steel reinforced concrete structures, such as beams and floor slabs of high-rise buildings.

In general, the design of formwork for concrete pouring is related to shoring, and is designed to be sufficiently safe against loads, taking into account the shape and dimensional errors of the completed structure and the structure of the formwork until the concrete structure is completed. It must be designed firmly so that it does not go awry. The loads that formwork and shoring receive during construction include the weight of the formwork itself, concrete, workers, construction equipment, etc., vertical loads due to impact, wind pressure, slope, water pressure, vibrations during work, etc. The resulting lateral loads and
and the lateral pressure of concrete, and it is extremely difficult to construct formwork equipment that can sufficiently support these loads.

In conventional frame forming, plate-shaped formwork that supports the concrete in the beam section and plate-shaped formwork that supports the concrete in the floor slab section are arranged in the vertical and horizontal directions, and the formwork for supporting the beam is arranged vertically and horizontally. The floor slab is supported by form ties, column-shaped fixing members extending in the longitudinal direction, end pieces standing vertically, lower joists extending longitudinally, etc., and the formwork for supporting the floor slab is arranged horizontally. Because it is supported by installed beams, there are many parts, the structure is complex, and workability during assembly and disassembly is poor. The reason why so many parts are required is that the strength of the plate-shaped formwork itself is weak.

On the other hand, strong formwork panels have been developed in which the formwork and reinforcing members are integrally molded, but since the reinforcing members are integrally fixed to one side of the formwork, they can only be used on one side. Since it is made of iron, it is heavy and difficult to assemble, dismantle, and transport.

Furthermore, since the length, thickness, width, etc. of beams and floor slabs vary depending on each structure, formwork must be prepared depending on the size of the frame each time, which is not economical. It is.

Therefore, the objects of the present invention are to have high strength, be able to be used on both sides, have a small number of parts, be light in weight, and
Another object of the present invention is to provide a formwork panel for concrete that can be freely adapted to the length and size of the part to be supported.

To achieve this objective, the present invention has a main body in which one or more hollow portions are formed along the longitudinal direction;
A hook consisting of a pair of symmetrical locking pieces provided along the longitudinal direction at the end of the main body, an opening provided along the longitudinal direction between the pair of locking pieces, and concrete formed on both sides of the main body. It is characterized by comprising a support surface.

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

As shown in Figures 1 and 2, in steel reinforced concrete structures, such as high-rise buildings,
When forming the frame 3 such as the floor 1 and beams 2 by pouring concrete, the steel beams 4 are placed on the ground in advance.
A formwork panel 9, which is a central formwork channel consisting of a C-shaped channel along the longitudinal direction, is connected to the upper part of the center via a concrete burial connecting member 8 consisting of a support fitting 5, a cone 6, and a bolt 7. A reinforcing member 10, which is a thick end member, is suspended downward through bolts and nuts that pass through locking portions consisting of long holes or round holes at the bottom of the formwork panel 9, and this reinforcing member 10 has horizontal direction. A reinforcing member 11, which is a large pulling member, is connected to the reinforcing member 11 so that its height and width can be adjusted freely, and a scaffolding device 13 is suspended from the reinforcing member 11 via a hanging material 12 such as a chain, and a mold is removed from the rivets on this scaffolding device 13. A series of operations such as frame assembly, concrete pouring, concrete repair and finishing, and formwork dismantling are carried out continuously.

In the above case, the suspended scaffolding device 13 may be directly suspended from the formwork panel 9, which is the central formwork channel. In some cases, the central formwork panel 9 is supported on the upper part of a support that stands up from the ground, and the connecting member 8 is not used. Further, in a state where the central formwork panel 9 is held, it is possible to assemble the shaft members 10 and the scaffolding device 13 before pouring concrete from above the floor 1, without necessarily assembling them on the ground.

A formwork panel 9, which is a central formwork channel, is detachably connected to a cone 6 via bolts 7 passing through long holes, round holes, square holes, etc., and this cone 6 is connected to a steel beam 4 via a support fitting 5. When they are fixed and concrete is poured, the supporting metal fittings 5 and cone 6 are buried in the concrete, and when the bolts 7 are removed from the cone 6, the center formwork panel 9 is dismantled, and this formwork panel 9 is The contacting concrete surface will undergo repair and finishing work. In this case cone 6
will be dug out from within the concrete and repaired.

A beam support formwork panel 14 is fixed vertically to the lower part of the center formwork panel 9 via bolts and nuts S, and a floor slab formwork panel 1 is fixed horizontally to the bottom of the center formwork panel 9.
5 is fixed, and these formwork panels 14, 15 support the poured concrete along the longitudinal direction.

The beam supporting formwork panel 14 consists of a vertical panel 16 and a horizontal panel 17, and the vertical panel 16 is supported by one or more reinforcing members 10, which are end members, on the outer surface of the vertical panel 16, and the horizontal panel 17 is a large support member. It is supported by reinforcing members 11 as members, and the top flange of one of the reinforcing members 10 is removably connected to the lower part of the central formwork panel 9 via bolts and nuts S.

The reinforcing member 11, which is a large tension member, is composed of a hollow rectangular column, and a plurality of holes 18 are bored at arbitrary intervals on two or four sides of this column, and the other reinforcing member, which is a thick member. 10 is a pillar with an L-shaped cross section, a flat plate,
Alternatively, the reinforcing member 10 is formed with a plurality of holes at arbitrary intervals in the vertical direction, and the holes 18, 1 of the two reinforcing members 10, 11 are
By freely combining the parts 9 and connecting them with bolts, the height of the large tension member 11 and the width l interval between the thick members 10, 10 can be arbitrarily adjusted. The height of the large tension member 11 and the width l between the thick members 10, 10 attached to this large tension member 11 are finely adjusted each time depending on the height and width of the frame 3 to be molded.

The beam support formwork panel 14 consisting of a vertical panel 16 and a horizontal panel 17 is a formwork made of a conventional flat plate,
It serves as a side plate fixing member or thick member and a member such as a form tie that tightens the formwork, and as shown in the figure, it connects the C-shaped channel panel a, which is a connecting tool that also serves as the formwork, and the hollow square columnar formwork. The panel b and the hollow columnar formwork panel c with an L-shaped cross section are brought into contact with each other in one or more arbitrary ways, and the contact points are connected to bolts, nuts, joints, and other attachment members to the formwork panel a, The parts b and c are integrally connected to each other in a detachable manner via locking parts.

Similarly, the floor slab support formwork panel 15 is arranged horizontally so as to uniformly support the lower surface of the floor 1.
This uses a C-type channel panel a and a hollow rectangular prism-shaped panel b that are arbitrarily combined and brought into contact, and the contact points are integrally connected via bolts, nuts, joints, and other attachment members. ing.

The reason why the formwork panels 14 and 15 are removably connected by a plurality of formwork panels a, b, c, etc. is because the length and width of the frame 3 differ at the construction site, so formwork panels a, 15, etc. are connected each time. ,b,c can be increased or decreased to accommodate each site.If the size of the frame 3 is constant, formwork panel a, which is a C-type channel.
Alternatively, it is also possible to use a single integrally molded quadrangular prism-shaped formwork panel b, or a combination of these in any desired alternating manner.

One or more beams 20 are disposed along the lateral direction on the lower surface of the floor slab support formwork panel 15, and this beam 20 supports the lower part of the floor slab support formwork panel 15, and has a structure at its end. The central formwork panel 9
It is removably supported on the lower upper surface of the.

The beam 20 consists of a hollow quadrangular prism-shaped guide 21 and a support rod 22 slidably inserted into the guide 21. The guide 21 has one or more guide holes 23 along the longitudinal direction. A hook portion 24 such as a hook is formed at the upper end of the guide 21, and a mounting portion is hooked onto the hook portion 24 from the formwork panel 15 side.

Next, embodiments of the form panel will be described.

FIG. 10A relates to a formwork panel according to an embodiment of the present invention, in which four hollow parts 46 are formed along the longitudinal direction in the middle of the columnar main body 45, and openings along the longitudinal direction are formed at the top and bottom of the main body 45. A hook consisting of a notch 47 and a pair of locking pieces 48 facing each other is formed, and the hook is used as a locking portion. Main body 4
5 is formed from an aluminum alloy, and the hollow part 4
6 and made of aluminum alloy, it is thin and lightweight, and the hollow part 46 is made of aluminum alloy.
The beam material 49 that partitions supports the lateral load and increases strength and durability.

The number of hollow parts 46 may be one or more, and the width and length of the main body 45 and the number of hollow parts 46 can be selected each time depending on the size of the supporting surface of the concrete.

The main body 45 is a hollow column 50 as shown in FIG. 10E.
Alternatively, the locking portion may be a long hole 52 or a round hole 53 bored at one or more arbitrary intervals in the wall 51 at the upper and lower ends of the main body 45, as shown in the reference example in FIGS. 10F and 10G. You may.

Furthermore, as shown in the reference example in FIG. 10D, the locking part may have hooks, elongated holes, round holes, etc. formed at the upper and side ends of the main body 54; It is selectively formed at the upper end, lower end, or left and right side ends in order to connect other formwork panels depending on the position.

When the locking part is provided at the top or the top and bottom of the main body, one of the two side surfaces formed on both the left and right sides of the main body can be selectively used as a concrete support surface, providing versatility. It is easy to use because you can use it.

FIG. 10B shows a formwork panel according to another embodiment of the present invention, which is used in correspondence with formwork panel c in the formwork apparatus shown in FIG.

That is, a columnar main body 55 formed into a right-angled shape is formed with a central hollow part 46 and hollow parts 46 located in the vertical and horizontal directions, and hooks are provided at the upper and side ends of the main body 55. be. The number of hollow parts in the vertical direction and the horizontal direction may be one each, or a plurality of hollow parts may be provided in series.

Furthermore, in order to increase the strength of the main body, it is possible to provide reinforcing members 56 along the longitudinal direction at the corners, which also serve as concrete support surfaces, as shown in FIG. 10C.

The channels shown in FIGS. 11A and 11B are used as panels corresponding to the formwork panel 9, which is the center formwork channel in FIG. 2, or the C-type channel panel a, which is a connector that also serves as a formwork.

This is C which formed the hollow part 56 along the longitudinal direction.
A long hole 58 or a round hole 59 is bored in the upper part or the upper and lower parts of the main body 57 consisting of a mold channel as a locking part.

When connecting the formwork panel to the main body 57 consisting of a C-type channel, for example, when connecting the formwork panel main body 57 of Fig. 11A to the formwork panel main body 45 of Fig. 10A, the formwork panel main body 57 of Fig. 11A is connected as shown in Fig. 12. , align the notch 47 and the elongated hole 58, insert the flange 61 of the bolt 60 from the elongated hole 58 side, then rotate the flange 61 90 degrees so that it abuts the lower surface of the locking pieces 48, 48, and then insert the bolt 10. By tightening the nut 62, the main bodies 45 and 57 are connected continuously.

Similarly, when joining the formwork panel of FIG. 10F and the formwork panel of FIG. 11A, it is sufficient to align the long holes 52 and 58 and insert the bolt 60.

Furthermore, the formwork panel main body 57 of FIG. 11B is
When connecting to the formwork panels shown in Figures 0A, D, E, F, and G, insert a round rod-shaped bolt 63 bent into an L shape as shown in Figure 12C through the round hole 59, and rotate it 90 degrees. After hooking it on the locking part, tighten it with the nut 64.

In addition to the bolts 60 and 63, other known joints may be used as the tightening members. In addition, Fig. 10 A, B, C, D, E, F, G
A part of the formwork panel in FIGS. 11A and 11B, and preferably the entire C-shaped channel, is coated with a resin lining or coating by a fluidized dipping method or the like.

Next, we will discuss the operation.

Attach supporting metal fittings 5 to the steel beams 4 on the ground in advance.
The central formwork panel 9 is fixed via the cone 6 and bolts 7, and reinforcing members 10 and 11, which are end members and large tension members, are suspended from this formwork panel 9, and a scaffolding device 13 is attached to the reinforcing member 11. When the steel beam 4 is lifted to a predetermined position using a crane or the like in this state, the central formwork panel 9, reinforcing members 10, 11, and scaffolding device 13 connected thereto are pulled up and set in a predetermined position. Ru.

Next, work such as studs, welding, and reinforcing the steel frame is performed on the scaffolding device 13, and then formwork panels 14 for supporting beams and formwork panels 15 for supporting the floor slab are installed vertically and horizontally on the center formwork panel. A beam 20 is installed on the underside of the formwork panel 15 for connecting and supporting the floor slab.
However, these operations may be performed from above the floor 1 without using the scaffolding device 13.

When the formwork panels 14, 15 are assembled, concrete is poured into and on the formwork panels 14, 15, and the formwork panels 14, 15 carry the load from this concrete. Since each formwork panel 14, 15 is connected to the steel beam 4 via the central formwork panel 9, each formwork panel 1
4 and 15 alone can support the longitudinal and lateral loads from concrete. Therefore, the formwork panels 14, 15 and the central formwork panel 9 serve as a conventional plate-like formwork, side plate fixing member, form tie, etc.

A reinforcing member 1 is installed on the outside of the beam support formwork panel 14.
When 0 and 11 are arranged, the concrete and formwork panel 14 can be more strongly reinforced, and at the same time, the scaffolding can be suspended.

Similarly, when the beam 20 is installed under the floor slab supporting formwork panel 15, the concrete load on the floor slab side can be supported more firmly.

Next, FIG. 3 relates to an embodiment of the present invention, which shows a method of forming a frame and a formwork apparatus when a wall is formed on one side.

That is, when there is a wall A on the left side, the central formwork panel 9 is attached to the steel beam 4 with the support fittings 5, cones 6, and bolts 7.
The central formwork panel 9 is fixed removably through the
A vertical panel 16 is hung from the bottom of the vertical panel 14, a horizontal panel 17a of arbitrary length is integrally connected to the bottom of the vertical panel 14, and the central formwork panel 9 is connected to the end of the horizontal panel 17a. A vertical panel 16a is connected downward to this central formwork panel 9a, as described above. In this case, in order to prevent the lower formwork panels 17a, 16a from swinging,
As shown in the figure, a connecting rod 25, a cone 26, and a bolt 27 are installed and held between the vertical panel 16 and the wall A. However, it is also possible to use the center formwork panel 9a by detachably connecting it to the steel beam 4 via a connecting member. Similarly, FIG. 4 shows another embodiment of the present invention in which a reinforcing member 11 serving as a main member is detachably connected to a steel beam 4.

The center formwork panel 9 is removably connected to the steel beam 4 via direct rods 28, cones 29, and bolts 30, and the center formwork panel 9 has a beam support formwork panel 14 and a floor slab. A supporting formwork panel 15 is connected.

Furthermore, a sleeve 31 is fixed to the lower flange 4a of the steel beam 4, and a cone 32 whose length can be freely adjusted is provided at the bottom of the sleeve 31, and a collar 33 is vertically attached to the large tension member 11. A bolt 34 inserted from the lower part of the main tension member 11 is screwed into the sleeve 31 through the collar 33 and the cone 32, and the main extension member 11 is attached to the steel beam 4 through this bolt 34. It is removably fixed.
The collar 33 passes through the horizontal panel 17.

In this case, since the bulkhead member 11 is fixed to the steel beam 4, there is no need to fix the end member 10 and the scaffolding device 13 to the central formwork panel 9. However, it is possible to use the end member 10 by fixing its upper part to the central formwork panel 9.

FIG. 5 relates to an embodiment of the attachment member, which is attached to the upper surface of the upper flange of the steel beam 4 in an L-shaped or H-shaped cross section.
A steel support fitting 35 is fixed horizontally, a cone 37 is fixed to the end flange 36 of the support fitting 35, and the central formwork panel 9 is held to the cone 37 via bolts 38.

FIG. 6 also shows another embodiment of the mounting member, which has an L-shaped or H-shaped horizontal support 39.
The cone 40 is fixed vertically on the horizontal part of the
The upper wall of the central formwork panel 9 is detachably fixed to this cone 40 with bolts.

FIG. 7 relates to another embodiment of the connecting member of the large tension member, in which an inverted U-shaped reinforcing bar 41 provided downward from the upper part of the steel beam 4 is fixed to a vertical cone 42, and the other The same bolt 34 as in FIG. 4 is screwed into the cone 42 from below.

8 and 9 relate to other embodiments of the present invention, in which the central formwork panel 9 is supported by one or more supports 43 rising from the ground; In the case of the figure, the large pull member 11 is supported by a support 44 that stands up from the ground. Even in these cases, the beam supporting formwork panel 14 and the floor slab supporting formwork panel 15 are removably connected to the central formwork panel 9, and their functions.
The effect is the same as in FIGS. 1 and 2.

According to the present invention, there are the following effects.

Since the body of the formwork panel is formed hollow with a hollow portion, it is lightweight, and a formwork device using this formwork panel is also lightweight.

Since concrete support surfaces are formed on both sides of the main body, one of these support surfaces can be used selectively, providing versatility; even if one support surface is damaged, the other support surface remains intact. Can be used.

Formwork panels can be used alone, or when a connecting device such as a C-shaped channel that also serves as a formwork is interposed between formwork panels, and this connecting device is connected via a hook, multiple formwork panels can be used vertically or They can be connected horizontally, and the length and width can be adjusted each time depending on the size of the frame.

Because the hook consists of a pair of locking pieces,
When a connecting tool such as a C-shaped channel is interposed and fixed between formwork panels, the flanges of the bolts that fix the connecting tool are evenly locked to the pair of locking pieces.

Since an opening along the longitudinal direction is formed between the pair of locking pieces, when fixing the connecting tool to the locking piece, the rectangular flange of the bolt can be inserted into the opening from any position. This flange can then be locked to the locking piece by rotating 90 degrees.

The hook consisting of a pair of locking pieces and the opening between the locking pieces have a simple shape and a simple structure, so processing is easy and costs can be reduced.

[Brief explanation of drawings]

1 and 2 are perspective views and longitudinal sectional front views of a formwork device using a formwork panel according to one embodiment of the present invention, and FIGS. 3 and 4 are according to another embodiment of the present invention. FIGS. 5, 6, and 7 are partial longitudinal front views of the formwork apparatus according to embodiments of mounting members, and FIGS. 8 and 9 are other embodiments using supports. A perspective view of the formwork device according to the first
Figures 0A, B, C, D, E, F, and G are perspective views of formwork panels, and Figures 11A and B are center formwork channels or embodiments of connectors that also serve as formwork. A perspective view, FIG. 12A is a perspective view of one embodiment of a connected state of the form panel, and FIGS. 12B and C are perspective views of each embodiment of the bolt. 45... Main body, 46... Hollow part, 47... Notch serving as an opening, 48... Locking piece, 50... Column body, 55... Column-shaped main body.

Claims (1)

[Claims] 1. A main body formed with one or more hollow parts along the longitudinal direction, a hook consisting of a pair of symmetrical locking pieces provided along the longitudinal direction at the end of the main body, and a pair of hooks. A formwork panel for concrete consisting of an opening provided along the longitudinal direction between locking pieces, and concrete support surfaces formed on both sides of the main body. 2. The concrete form panel according to claim 1, wherein a plurality of hollow portions are provided in series. 3. A formwork panel for concrete according to claim 1, in which a plurality of hollow portions are arranged in a row in a right angle direction.