JP6914822B2 - Formwork method and formwork unit for lifting - Google Patents

Description

The present invention relates to a formwork for placing concrete.

At construction sites such as condominiums and hospitals with large buildings, large formwork is used for concrete placement. When installing such a large formwork, the formwork is lifted by a wire rope and moved. Conventionally, when the formwork is lifted, a wire rope is directly wound around the thick horizontal end material constituting the formwork to lift the formwork. However, even if the wire rope is tightly wound around the thick material at the horizontal end, there is a risk that the formwork will be shaken from side to side during lifting and the wire rope will move, and the balance of the formwork will not be maintained. Therefore, the following prior art is disclosed regarding the metal fittings for lifting the formwork.

The hanging jig for building a formwork of Patent Document 1 is a technique in which a hook is provided with a hook piece, a thick horizontal end member is engaged with the hook piece, and a rope is passed through a plurality of arranged pipes. The formwork hanging bracket of Patent Document 2 has an inverted U shape and is composed of a retaining rod having a stopper on the opening side, and is attached to a hanging hole at a required position away from the top end of the formwork. It is a technique to lift with a rope or the like.

Jitsufuku No. 6-7172 Japanese Unexamined Patent Publication No. 11-13573

In the technique of Patent Document 1, since the hook pieces are engaged with each of the thick horizontal end members, the jig itself is large and heavy, resulting in poor workability. In the technique of Patent Document 2, since the metal fitting is attached to the hole formed in the mold, the load may act directly on the mold to damage the mold. If the formwork is damaged, the formwork cannot be reused. In this case, it is necessary to repair or dispose of the damaged formwork or procure a new formwork, which reduces the work efficiency. Further, in the conventional construction method, when removing the formwork after placing concrete, it is necessary to remove all the parts such as the horizontal end thick material and the formwork support, which is troublesome.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to simplify the installation and removal work of the form to be lifted and to shorten the construction time.

The present invention that solves the above problems is a lifting formwork produced by connecting a plurality of formwork panels having vertical end thick members attached to a dam plate and attaching horizontal end thick members to the formwork panels. It is a formwork method using a unit, and when the formwork unit for lifting is manufactured, a separator is attached as a binding portion for fixing the formwork panel and the horizontal end thick material by using a formwork binding metal fitting. A first binding portion to be formed and a second binding portion to which the separator is not attached are provided, and at least two of the binding portions at the same height are designated as the second binding portion, and the second binding portion is used. Between the dam plate and the horizontal end thick member of the binding portion, a fixing portion fixed to the formwork binding bracket and a hook provided above the fixing portion to which a wire rope is attached. A formwork lifting metal fitting having a portion is attached, the wire rope is attached to the formworking metal fitting, the formwork unit for lifting is lifted and moved, and the formwork unit for lifting is installed at a predetermined position. One end of the separator is attached to the first binding portion, and a plurality of other molds are attached so as to face the lifting form unit via a form support attached to the other end of the separator. After building the formwork to construct the formwork and curing the concrete placed in the formwork, only the formwork binding metal fittings used in the first binding portion are removed from the formwork support. It is characterized in that it is removed, the wire rope is attached to the formwork lifting metal fittings, and the formwork unit for lifting is lifted and moved.

Further, the present invention from another viewpoint is a formwork unit for lifting which constitutes a formwork for placing concrete, and is a formwork panel in which a vertical end thick material is attached to a dam plate, and the formwork panel. A formwork binding bracket attached to the back side, a formwork support attached to the front side of the formwork panel, a screw member having a flat head attached to the front side of the formwork panel, and the dam. A formwork lifting metal fitting provided between the plate and the horizontal end thick material is provided, and a plurality of the formwork panels are connected to each other, and the formwork panel and the horizontal end thick material are fixed as a binding portion. A first binding portion in which the formwork panel and the lateral end thick member are fixed by the formwork binding metal fitting and the formwork support tool, and the formwork panel by the formwork binding metal fitting and the screw member. At least two of the binding portions having a second binding portion to which the horizontal end thick material is fixed and at the same height are the second binding portions, and the formwork lifting metal fittings. However, the formwork lifting metal fitting has the fixing portion fixed to the formwork binding metal fitting and the hooking part provided above the fixing part to which the wire rope is attached, and the formwork lifting metal fitting is the second. It is characterized by being attached to the binding part of.

According to the present invention, it is possible to simplify the installation and removal work of the form to be lifted and shorten the construction time.

It is a perspective view of the back side (concrete non-casting side) of the formwork unit for lifting which concerns on embodiment of this invention. It is a perspective view of the front side (concrete casting side) of the formwork unit for lifting which concerns on embodiment of this invention. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 2 showing a first binding portion of the lifting formwork unit according to the embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line BB in FIG. 2 showing a second binding portion of the lifting form unit according to the embodiment of the present invention. It is a perspective view of the metal fitting for lifting a formwork which concerns on embodiment of this invention. It is a figure which shows the state in which the formwork lifting metal fitting which concerns on embodiment of this invention is provided in the 2nd binding part. In this figure, the vertical end thick lumber is not shown. It is a figure which shows the back side of the formwork panel for demonstrating the manufacturing procedure of the formwork unit for lifting which concerns on embodiment of this invention. It is a figure which shows the front side of the formwork panel for demonstrating the manufacturing procedure of the formwork unit for lifting which concerns on embodiment of this invention. It is a figure which shows the back side of the formwork panel for demonstrating the manufacturing procedure of the formwork unit for lifting which concerns on embodiment of this invention. It is a figure which shows the back side of the formwork panel for demonstrating the manufacturing procedure of the formwork unit for lifting which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present specification and the drawings, elements having substantially the same functional configuration are designated by the same reference numerals, so that duplicate description will be omitted.

The lifting form unit 1 in the present embodiment has a configuration as shown in FIGS. 1 and 2. As shown in FIGS. 1 and 2, the lifting formwork unit 1 of the present embodiment includes a plurality of formwork panels 2 arranged side by side in the width direction W of the lifting formwork unit 1 and for lifting in the longitudinal direction. It is provided with a horizontal end thick material 32 arranged so as to face the width direction W of the form unit 1 and a form binding metal fitting 3 for attaching the horizontal end thick material 32 to the lifting form unit 1.

The formwork panel 2 is composed of a plurality of weir plates 30 made of plywood (control panel), a resin panel, or the like, and a plurality of vertical end thick members 31 made of square lumber or the like. The vertical end thick members 31 are parallel to each other at appropriate intervals, and the longitudinal direction faces the height direction H of the lifting formwork unit 1, and the back side of the weir plate 30 is provided by nails or the like. It is fixed to (concrete non-casting side). In the plurality of formwork panels 2 arranged in the width direction W of the formwork unit 1 for lifting, adjacent vertical end thick members 31 at the widthwise ends of each formwork panel 2 are connected to each other in Japanese Patent Application Laid-Open No. 2013-241734. It is connected by a formwork connecting hardware as described in the publication. For example, nails may be used to connect the formwork panels 2, but the connection work can be easily performed by using the formwork connection hardware as in the present embodiment.

The horizontal end thick lumber 32 is made of a pipe member made of steel, resin, etc., and by arranging a plurality of horizontal end thick lumber 32s, etc., each mold arranged along the width direction W of the lifting form unit 1. It has a sufficient length to connect the frame panels 2. As shown in FIG. 3, the horizontal end thick material 32 is fixed to the formwork panel 2 by the formwork binding metal fittings 3 attached to the back side of the formwork panel 2. The formwork binding metal fitting 3 includes a bolt 21 having a brim portion 20 formed at its tip, a washer 22 through which the bolt 21 is passed, and a nut 23 that holds the washer 22 by screwing to the bolt 21.

A screw 36 is mounted inside the formwork support 35 arranged on the front side (concrete casting side) of the weir plate 30, and the tip of the screw 36 has a through hole formed in the weir plate 30. As you can see, it is screwed into the tip surface of the bolt 21 of the form binding metal fitting 3 arranged on the back side of the form panel 2. A screw hole for screwing the tip of the screw 36 is provided on the tip surface of the bolt 21 of the formwork binding metal fitting 3. By tightening the screw 36, the dam plate 30 is firmly sandwiched between the brim 20 at the tip of the bolt 21 and the formwork support 35.

The bolt 21 of the formwork binding metal fitting 3 has a washer 22 pressed from above the two horizontal end thick members 32 arranged on the back side of the vertical end thick member 31 (the back side of the form panel 2). The nut 23 is mounted from above (the back side of the form panel 2). As a result, the two horizontal end thick materials 32 are pressed against the back side of the vertical end thick material 31 via the washer 22, and the vertical end thick material 31 and the horizontal end thick material 32 are held in a state of being assembled in a grid pattern. Has been done. Further, in the state where the vertical end thick material 31 and the horizontal end thick material 32 are assembled in a grid pattern in this way, the horizontal end thick material 32 is received by the recess 24 formed in the washer 22, and the horizontal end thick material 32 Misalignment is suppressed.

In the above description, the formwork panel 2 and the horizontal end thick member 32 are fixed by the formwork binding metal fitting 3 and the formwork support 35 at the binding portion 4 which is the connection point between the formwork panel 2 and the horizontal end thick member 32. However, in the lifting formwork unit 1 of the present embodiment, there is also a binding portion 4 in which the formwork support tool 35 is not used. In such a binding portion 4, instead of the form support tool 35, a screw member 5 having a flat head as shown in FIG. 4 is provided. The formwork panel 2 and the horizontal end thick member 32 are fixed by screwing the screw member 5 from the front surface side of the weir plate 30 onto the tip surface of the bolt 21 of the formwork binding metal fitting 3.

As described above, in the formwork unit 1 for lifting of the present embodiment, the formwork support tool 35 is provided as the formwork portion 4 of the formwork panel 2 and the horizontal end thick member 32 (FIG. 3). , There is a binding portion 4 (FIG. 4) in which the formwork support 35 is not provided. When constructing the formwork, one end of a separator (not shown) is attached to the formwork support 35, and another formwork support 35 is attached to the other end of the separator. Another formwork panel 2 is built at a position facing the lifting formwork unit 1 via the tool 35. On the other hand, the separator cannot be attached to the binding portion 4 provided with the screw member 5. That is, in the formwork unit 1 for lifting of the present embodiment, of the formwork panel 2 and the binding portion 4 of the horizontal end thick material, the binding portion 4 in which the separator is provided at the time of forming the formwork (hereinafter, "first binding portion"). There are a portion 4a ”) and a binding portion 4 (hereinafter,“ second binding portion 4b ”) to which a separator is not provided.

As shown in FIG. 2, in the lifting form unit 1 of the present embodiment, the first binding portions 4a are arranged in a row so that the adjacent binding portions 4 become the first binding portion 4a in the height direction H. There are a portion and a portion where the second binding portions 4b are arranged in a row so that the adjacent binding portions 4 in the height direction H become the second binding portion 4b. The Oite of this embodiment, column L ₂ between the rows L ₁ of the first Tightened portion 4a second Tightened portion 4b, are arranged alternately along the width direction W for form unit 1 lifting ing.

The horizontal end thick material 32 attached to the formwork panel 2 is provided in a plurality of stages along the height direction H of the lifting form unit 1 as a set of two, but the horizontal end thickness located at the uppermost stage. A formwork lifting metal fitting 6 for lifting the formwork unit 1 is attached to a part of the second binding portions 4b provided on the member 32. The formwork lifting metal fittings 6 are attached to the second binding portions 4b near both ends in the width direction of the formwork unit 1 for lifting. The position of the second binding portion 4b to which the formwork lifting metal fitting 6 is attached is not particularly limited, and is appropriately changed according to the width and the like of the formwork unit 1 for lifting.

As shown in FIG. 5, the formwork lifting metal fitting 6 has a pair of plate-shaped portions 10 and 10 arranged in parallel at predetermined intervals. The plate-shaped portions 10 and 10 are formed by, for example, bending a steel plate in a V shape, and the lower ends of the plate-shaped portions 10 and 10 are connected by the bent portion 11. A hooking portion 12 for attaching the wire rope 40 is formed on the upper portions of the plate-shaped portions 10 and 10. In the present embodiment, the hooking portion 12 has a round hole shape for passing the pin 52 of the shackle 51. A fixing portion 15 for fixing the formwork fastening metal fitting 3 is provided between the plate-shaped portions 10 and 10. The fixing portion 15 has a tubular shape through which the bolt 21 of the formwork binding metal fitting 3 is passed. The fixing portion 15 is attached to the plate-shaped portions 10 and 10 by welding or the like. Notches 16 are formed on the side edges of the plate-shaped portions 10 and 10 at positions corresponding to the fixing portions 15.

As shown in FIG. 6, in the formwork lifting metal fitting 6, the bolt 21 of the formwork binding metal fitting 3 vertically attached to the back side of the weir plate 30 is passed through the fixing portion 15 of the formwork lifting metal fitting 6. As a result, the width direction W of the plate-shaped portion 10 of the formwork lifting metal fitting 6 is arranged so as to be perpendicular to the weir plate 30. Then, the plate-shaped portion 10 of the formwork lifting metal fitting 6 is sandwiched between the weir plate 30 and the horizontal end thick member 32, and the horizontal end thick member 32 is a washer 22 attached to the bolt 21 of the formwork binding metal fitting 3. Is held down by the nut 23.

When the formwork unit 1 for lifting is lifted, the shackle 51 is attached to the loop portion 50 provided at the lower end of the wire rope 40, and the pin 52 of the shackle 51 is the plate-shaped portion of the formwork lifting metal fitting 6. It is passed through a hook portion 12 (round hole shape) provided on the upper part of the 10 and fixed. As a result, the wire rope 40 is connected to the formwork lifting metal fitting 6, and the formwork unit 1 for lifting can be lifted.

In the present embodiment, the width D of the plate-shaped portions 10 and 10 of the formwork lifting metal fitting 6 is the same length as the width M (FIG. 3) of the vertical end thick member 31 of the formwork panel 2. As a result, the distance between the weir plate 30 and the horizontal end thick lumber 32 becomes equal to the width M of the vertical end thick lumber 31 even at the attachment location of the formwork lifting metal fitting 6, and the weir extends over the entire length of the horizontal end thick lumber 32. Since the distance between the plate 30 and the lateral end thick member 32 is kept equal, the formwork lifting metal fitting 6 can be fixed more firmly. Further, at the attachment location of the formwork lifting metal fitting 6, excessive tightening by the bolt 21 is avoided, damage to the formwork panel 2 is prevented, and the formwork unit 1 for lifting can be reused.

Further, when the plate-shaped portion 10 of the formwork lifting metal fitting 6 is sandwiched between the weir plate 30 and the horizontal end thick member 32, the brim portion 20 at the tip of the bolt 21 is provided on the side edge of the plate-shaped portion 10. It is accepted by the notch 16. Therefore, the brim portion 20 does not protrude from the side edge of the plate-shaped portion 10, and the entire side edge of the plate-shaped portion 10 can be brought into close contact with the back surface of the weir plate 30 without a gap. As a result, the lifting formwork unit 1 can be lifted in a stable state. Further, since the load load can be distributed to the other formwork lifting metal fittings 6 via the horizontal end thick material 32, damage to the formwork panel 2 is prevented, and the formwork unit 1 for lifting is used. It becomes possible to turn.

In addition, since the formwork lifting metal fitting 6 according to the present embodiment has a pair of plate-shaped portions 10 and 10 arranged in parallel at predetermined intervals, bolts passed through the fixing portion 15 On both sides of 21, the pressing force from the washer 22 can be evenly received by the pair of plate-shaped portions 10 and 10, and the formwork lifting metal fitting 6 is stably fixed. Further, if the pair of plate-shaped portions 10 and 10 are formed in a V shape, the fixing portion 15 attached by welding or the like does not fall downward, and the load of the form panel 2 can be reliably supported. can. As shown in FIG. 6, in order to evenly receive the pressing force from the horizontal end thick members 32 arranged two by two at the top and bottom of the bolt 21 passed through the fixing portion 15, the plate-shaped portions 10, 10 Is preferably long above and below the fixing portion 15 to a position where the lateral end thick member 32 can be received.

The lifting formwork unit 1 of the present embodiment is configured as described above. At the construction site, a lifting formwork unit 1 manufactured by connecting a plurality of formwork panels 2 is installed at a predetermined position, and at the same time, a plurality of other molds are placed at positions facing the lifting formwork unit 1. The frame panel 2 is built in, and the lifting formwork unit 1 and the plurality of formwork panels 2 are connected to each other via a separator (not shown) to construct a formwork for concrete placement. The formwork support tool 35 is not attached to the plurality of formwork panels 2 built at positions facing the lifting formwork unit 1, and the formwork support is provided to the weir plate 30 of the formwork panel 2. Only through holes for inserting the screws 36 of the tool 35 are formed.

Next, a formwork method using the lifting formwork unit 1 will be described.

First, as shown in FIGS. 7 and 8, two weir plates 30 are arranged one above the other, and vertical end thick timbers 31 are attached at predetermined intervals to prepare a formwork panel 2. A through hole (not shown) is formed in the weir plate 30 so as to match the position of the connection point between the formwork panel 2 and the horizontal end thick lumber 32. Next, at the position of the through hole formed in the weir plate 30, the formwork binding metal fitting 3 is attached from the back side of the weir plate 30, and the screw member 5 or the formwork support 35 is attached from the front side of the weir plate 30. It constitutes a first binding portion 4a or a second binding portion 4b. In the present embodiment, with respect to one formwork panel 2, adjacent binding portions 4 in the height direction H of the lifting formwork unit 1 become the first binding portion 4a with the row L1 of the _{first binding portion 4a. , The row L2 of the second} binding portion 4b in which the adjacent binding portions 4 are the second binding portions 4b in the height direction H of the form unit 1 is provided one by one.

Subsequently, a plurality of formwork panels 2 with the above-mentioned formwork binding metal fittings 3 attached are produced, and each formwork panel 2 is arranged in the width direction W of the lifting formwork unit 1 as shown in FIG. .. Here, arranged as rows L ₂ between the rows L ₁ of the first Tightened portion 4a second Tightened portion 4b are arranged alternately along the width direction W. Then, the vertical end thick members 31 of the adjacent formwork panels 2 are connected to each other by the formwork connecting hardware 7. This operation is repeated until the desired width of the lifting form unit 1 is reached. A formwork lifting metal fitting 6 is attached to a part of the second binding portion 4b so that the formwork unit 1 for lifting can be lifted. After that, as shown in FIG. 10, two horizontal end thick members 32 are arranged in each binding portion 4, and the nuts 23 of the formwork binding metal fittings 3 are tightened to fix the horizontal end thick members 32 to the form panel 2. As a result, the lifting formwork unit 1 as shown in FIG. 1 is manufactured.

Next, the shackle 51 to which the wire rope 40 is attached is attached to the formwork lifting metal fitting 6 of the formwork unit 1 for lifting, and the formwork unit 1 for lifting is lifted by a lifting machine such as a crane or a hoist. After moving the lifting formwork unit 1 to a designated place and installing it, the shackle 51 is removed. After that, if necessary, other lifting formwork units 1 are installed in order so as to be lined up next to the already installed lifting formwork unit 1.

After that, a plurality of formwork panels 2 are built at positions facing the installed formwork unit 1 for lifting to construct a formwork for placing concrete. At this time, one end of a separator (not shown) is attached to each first binding portion 4a of the lifting form unit 1, and the form support 35 is attached to the other end of the separator. In this step, reinforcement is also arranged on the front side of the lifting form unit 1. Subsequently, a plurality of other formwork panels 2 to be installed facing the lifting formwork unit 1 are prepared, and screws 36 of the formwork support 35 attached to the other end of the separator are formed on the weir plate 30. The other formwork panels 2 are built in order so as to be inserted through the through holes, and the formwork binding metal fittings 3 are attached to the screws 36 protruding on the back side of the formwork panels 2.

Then, concrete is placed in the formwork. After curing the concrete, the lifting formwork unit 1 is removed from the mold. In the present embodiment, of the binding portions 4 of the formwork panel 2 and the horizontal end thick member 32, the separator is attached only to the first binding portion 4a. Therefore, the formwork unit 1 for lifting can be removed from the concrete skeleton simply by removing the formwork binding metal fitting 3 of the first binding portion 4a from the formwork support 35. In other words, since it is not necessary to remove the formwork binding metal fitting 3 and the screw member 5 of the second binding portion 4b, the work time for removing the formwork unit 1 for lifting can be shortened. The formwork support 35 left on the surface of the concrete skeleton after removing the formwork binding metal fitting 3 of the first binding portion 4a is removed after the formwork unit 1 for lifting is removed.

After that, the shackle 51 to which the wire rope 40 is attached is attached to the formwork lifting metal fitting 6 of the formwork unit 1 for lifting, and the formwork unit 1 for lifting is lifted and moved. At this time, in the formwork unit 1 for lifting of the present embodiment, since the formwork binding metal fitting 3 and the screw member 5 are still attached at the second binding portion 4b, the horizontal end thick member 32 is a mold. It is in a state of being fixed to the frame panel 2. As a result, the horizontal end thick member 32 does not fall off when the lifting formwork unit 1 is lifted, and the lifting formwork unit 1 can be moved in a stable posture. The formwork unit 1 for lifting can be used as the formwork unit 1 for lifting at the next concrete placing location by simply attaching the formwork binding metal fittings 3 and the formwork support 35 to the first binding portion 4a again. Therefore, it is possible to simplify the installation of the formwork and shorten the construction time.

The formwork method using the lifting formwork unit 1 of the present embodiment is as described above. According to the formwork method using the lifting formwork unit 1 of the present embodiment, it is not necessary to remove all the parts when removing the lifting formwork unit 1 after placing concrete, and the removing work can be performed. It can be done easily. As a result, the construction time can be shortened.

In addition, according to the lifting mold unit 1 of the present embodiment, the first Tightened portion 4a of the string L ₁ and second Tightened portion 4b width direction W of the column L ₂ is lifting formwork unit 1 Since they are arranged alternately along the railing, when the lifting formwork unit 1 is removed from the concrete skeleton, it is easy to determine the location of the binding portion 4 from which the parts should be removed. Further, for example, the washer 22 of the formwork binding metal fitting 3 of the second binding portion 4b may be colored (marked). Also in this case, when the lifting formwork unit 1 is removed from the mold, it becomes easy to determine the location of the binding portion 4 from which the parts should be removed.

Although the embodiments of the present invention have been described above, the present invention is not limited to such examples. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the technical idea described in the claims, and of course, the technical scope of the present invention also includes them. It is understood that it belongs to.

For example, in the above embodiment, the screw member 5 is used in the second binding portion 4b in which the separator is not provided, but the formwork support 35 is also used in the second binding portion 4b as in the case of the first binding portion 4a. May be used. Even in this case, since the separator is not provided in the second binding portion 4b, it is possible to carry out the formwork method capable of shortening the construction time as in the above embodiment. However, when the formwork support 35 is used, a dent is formed on the surface of the concrete skeleton after the formwork unit 1 for lifting and the formwork support 35 are removed, so it is necessary to perform trace hole treatment such as filling with mortar. .. Therefore, when the screw member 5 is used instead of the formwork support 35 in the second binding portion 4b, the trace hole processing can be omitted and the construction time can be further shortened.

Further, the shape of the formwork lifting metal fitting 6 is not limited to that described in the above embodiment. In order to carry out the formwork method described in the above embodiment, the formwork lifting metal fitting 6 is provided between the weir plate 30 and the horizontal end thick member 32, and the formwork binding metal fitting 3 is fixed. It suffices to have a fixing portion 15 to be attached and a hooking portion 12 to which the wire rope 40 provided above the fixing portion 15 is attached.

Further, the mold as in the above embodiment are arranged alternately along the row L ₁ and second Tightened portion 4b width direction W of the column L ₂ the lifting formwork unit 1 of the first Tightened portion 4a was constructed unit 1, a column L ₁ of the first Tightened portion 4a column L ₂ of the second Tightened section 4b may not be arranged alternately, also not be arranged in a row Is also good. Even in this case, when removing the formwork unit 1 for lifting, the formwork unit 1 for lifting is simply removed by removing the formwork binding metal fitting 3 and the formwork support 35 of the first binding portion 4a. It is possible to lift it. Further, the number and positions of the first binding portion 4a and the second binding portion 4b are not particularly limited. However, at least two of the plurality of binding portions 4 at the same height are provided so that the horizontal end thick member 32 does not fall off from the formwork panel 2 when the lifting formwork unit 1 is removed and moved. It needs to be the second binding part 4b.

Further, in the above embodiment, when constructing the formwork, a plurality of formwork panels 2 to which the formwork support tool 35 is not attached are sequentially arranged at positions facing the lifting formwork unit 1 installed at a predetermined position. Although it has been explained that the formwork is to be built, the formwork panels 2 may be connected to each other by the formwork connecting hardware 7 in advance. Further, the formwork binding metal fitting 3 and the screw member 5 are attached to the connected formwork panel 2 to form a second binding portion 4b, and the horizontal end thick member 32 is fixed at the second binding portion 4b. You can leave it. However, in the latter case, it is necessary to separately provide the formwork binding metal fitting 3 at the position of the screw 36 of the formwork bearing 35 protruding to the back side when the formwork panel 2 is built.

The present invention can be used for concrete placing work, and is particularly useful at construction sites such as condominiums and hospitals with large buildings.

1 Formwork unit for lifting 2 Formwork panel 3 Formwork binding metal fittings 4 Binding part 4a First binding part 4b Second binding part 5 Screw member 6 Formwork lifting metal fittings 7 Formwork connecting hardware 10 Plate-shaped part 11 Bending Part 12 Hook 16 Notch 20 Brim 21 Bolt 22 Seat 23 Nut 24 Recess 30 Dam plate 31 Vertical end thick material 32 Side end thick material 35 Formwork support 36 Screw 40 Wire rope 50 Loop part 51 Shackle 52 Pin H Height direction of the lifting formwork unit L ₁ Row of the first binding part L ₂ Row of the second binding part W Width direction of the lifting formwork unit

Claims (5)

It is a formwork method using a lifting formwork unit manufactured by connecting a plurality of formwork panels with vertical end thick timbers attached to a weir plate and attaching horizontal end thick timbers to the formwork panels. ,
When manufacturing the lifting formwork unit
A first binding portion to which the separator is attached and a second binding portion to which the separator cannot be attached are provided as the binding portion for fixing the formwork panel and the horizontal end thick lumber using the formwork binding metal fittings. ,
At least two of the binding portions at the same height are designated as the second binding portion.
A fixing portion fixed to the formwork binding metal fitting and a wire rope provided above the fixing portion are attached between the weir plate of the second binding portion and the lateral end thick member. Attach the formwork lifting bracket with the hooking part
The wire rope is attached to the formwork lifting metal fitting, and the formwork unit for lifting is lifted and moved.
One end of the separator is attached to the first binding portion of the lifting form unit installed at a predetermined position, and the lifting mold is attached via a form support attached to the other end of the separator. A plurality of other formwork panels are built so as to face the frame unit to construct the formwork.
After curing the concrete placed in the formwork, only the formwork binding metal fittings used in the first binding portion were removed from the formwork bearings.
A formwork construction method characterized in that the wire rope is attached to the formwork lifting metal fittings to lift and move the formwork unit for lifting. The first aspect of the invention is characterized in that, in the second binding portion, the formwork panel and the lateral end thick member are fixed by using the formwork binding metal fitting and a screw member having a flat head. Formwork method described in. When attaching the horizontal end thick material to the formwork panel,
The first binding portions are arranged in a row so that the binding portions adjacent to each other in the height direction of the lifting form unit become the first binding portion.
1. Formwork method described in. A formwork unit for lifting that constitutes a formwork for placing concrete.
Formwork panel with vertical end thick lumber attached to the weir board,
The formwork binding bracket attached to the back side of the formwork panel,
Formwork bearings attached to the front side of the formwork panel,
A screw member with a flat head, which is attached to the front side of the formwork panel,
A metal fitting for lifting the formwork provided between the weir plate and the thick lumber at the horizontal end is provided.
A plurality of the formwork panels are connected to each other and
As a binding portion in which the formwork panel and the horizontal end thick material are fixed, a first binding in which the formwork panel and the horizontal end thick material are fixed by the formwork binding metal fitting and the formwork support. It has a second binding portion in which the formwork panel and the horizontal end thick member are fixed by the formwork binding metal fitting and the screw member.
Of the binding portions at the same height, at least two are the second binding portions.
The formwork lifting metal fitting has a fixing portion fixed to the formwork binding metal fitting and a hooking portion provided above the fixing part to which a wire rope is attached, and the formwork lifting metal fitting is provided. A formwork unit for lifting, characterized in that the metal fittings are attached to the second binding portion. The row of the first binding portions in which the binding portions adjacent to each other in the height direction of the lifting form unit are the first binding portions,
The binding portions adjacent to each other in the height direction have a row of second binding portions which are the second binding portions.
The lifting mold according to claim 4, wherein the row of the first binding portion and the row of the second binding portion are arranged along the width direction of the lifting form unit. Formwork unit.

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