JP7363863B2 - Formwork for cloth foundations - Google Patents

Description

The present invention relates to a formwork for a cloth foundation used to form a cloth foundation.

Building foundations are formed by assembling base formwork and rising formwork and pouring ready-mixed concrete. These formworks are fixed to each other so that they do not easily come off even when external forces or loads are applied.

For example, the steel formwork mounting device disclosed in Patent Document 1 includes a pair of left and right base formworks 25, a connecting member 26 that connects the respective base formworks 25 to each other, and a connecting member 26 that connects the respective base formworks 25 to each other. It also has a stopper 32 that is hooked onto the rising formwork 30 while being fixed with bolts and nuts. Thereby, the base formwork 25 is connected to the rising formwork 30.

In addition to the steel formwork mounting device disclosed in Patent Document 1, as an example in which a base formwork and a rising formwork are connected, the end of the base formwork is connected from below by the lower end portion of the rising formwork. Some can be connected by holding them down from above using a presser metal fitting. The presser metal fitting can press down the end of the base formwork by stretching it against the horizontal crosspiece of the rising formwork. A plurality of connected base formworks and rising formworks are respectively connected and assembled in the depth direction.

Japanese Unexamined Patent Publication No. 7-119297

However, when a rising formwork without horizontal bars is used, the above-mentioned connection method cannot be adopted because there is no part to support the presser fittings for holding down the base formwork from above.

Furthermore, if the dimensional standards of the base formwork and the dimensional standards of the upright formwork are different, the joints of the base formworks that are continuous in the depth direction and the joints of the upright formworks do not match. A connection method that can handle such cases is desired.

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a formwork for a cloth foundation that can flexibly correspond to the dimensional standards of the formwork and connect a rising formwork and a base formwork. purpose.

(1) The formwork for a cloth foundation according to the present invention includes a supporting material, a pair of rising formworks supported by the supporting material, and a base formwork connected to the lower crosspiece of the rising formworks by a connecting member. , is provided. The connecting member includes a base portion, a fixed plate having a convex piece protruding from the base portion, and is located below the lower crosspiece, and the base portion is connected to the base portion above the base portion so that the convex piece protrudes upward. a fixture for fixing to the lower crosspiece, a first part having a first through hole into which the convex piece is inserted and located above the base part, and a downward direction from the first part along the lower crosspiece. and an angle member having a second portion depending from the angle member. The base formwork has an upper end portion extending in the horizontal direction, and a hanging portion extending downward from the upper end portion. The upper end portion is located between the first portion and the base portion, or between the lower rail and the fixture. The hanging part is located between the lower crosspiece or the fixture and the second part.

According to the above configuration, since the base formwork can be fixed between the upright formwork and the angle member, the formworks can be connected to each other even in the upright formwork without horizontal bars. Further, since the base formwork is sandwiched between the upright formwork and the angle member, the fixing positions of the base formwork and the upright formwork in the depth direction are not limited. Therefore, even if the base formwork and the rising formwork have different dimensional standards, they can be connected in the depth direction.

(2) Preferably, the fixture includes a seat, a bolt that extends from the seat and communicates the lower crosspiece and the base, and a nut that is screwed into the bolt.

According to the above configuration, since the base portion and the lower crosspiece can be fixed via the fixing tool, it is possible to attach the fixing plate whose convex pieces are matched in position in the depth direction according to the rising formwork.

(3) Preferably, the convex piece has a second through hole. The first portion is located between the wedge member inserted into the second through hole and the base portion.

According to the above configuration, since the first portion is located between the base portion and the wedge member, upward movement of the angle member is regulated by the wedge member. Therefore, even if an external force or load is applied, the angle material can be fixed so that it does not come off from the convex piece.

(4) Preferably, the rising formwork has a vertical bar extending upward from the lower bar. The first part has a slit into which the vertical bar is inserted.

According to the above configuration, in the first part, the slit into which the vertical bar is inserted is arranged in the depth direction. For this reason, the number of parts of the connecting member can be suppressed while ensuring the strength of the rising formwork by the vertical beams.

(5) Preferably, the rising formwork has an upper crosspiece that is continuous with the upper end of the vertical crosspiece, and does not have a horizontal crosspiece between the upper crosspiece and the lower crosspiece.

According to the above configuration, since the rising formwork has the upper and lower rails but does not have the horizontal rails, it is possible to reduce the weight and simplify the rising formwork while suppressing a decrease in strength.

(6) Preferably, a plurality of the first through holes are located in the first part, and the slit is located between adjacent first through holes.

According to the above configuration, since the slit is located away from the first through hole, the convex piece into which the first through hole is inserted can be placed closer to the rising form than the slit. As a result, the upper end of the base formwork can be placed close to the rising formwork.

(7) Preferably, the base frame is made of synthetic resin.

According to the above configuration, the weight of the base formwork can be reduced, and the work load when assembling the formwork can be reduced.

According to the present invention, the rising formwork and the base formwork can be connected flexibly in accordance with the dimensional standards of the formwork.

FIG. 1 is a perspective view showing a formwork 10 for a cloth foundation according to an embodiment of the present invention. FIG. 2 is a partially exploded perspective view of the formwork 10 for a cloth foundation. FIG. 3 is a diagram showing a part of the formwork 10 for a cloth foundation in a state of being connected in the depth direction. FIG. 4 is a sectional view showing the formwork 10 for a cloth foundation in an assembled state. FIG. 5 is a diagram showing the assembly process of the formwork 10 for a cloth foundation. FIG. 6 is a sectional view showing a formwork 10A for a cloth foundation according to a modified example. FIG. 7 is a diagram illustrating an assembly process of a formwork 10A for a cloth foundation according to a modification.

Embodiments of the present invention will be described below. Note that the embodiments described below are merely examples of the present invention, and it goes without saying that changes can be made as appropriate without changing the gist of the present invention. In addition, in the following description, the vertical direction 1 is defined based on the state in which the cloth foundation 11 is cast, and is the direction in which the rising formwork 21 and the base formwork 22 that form the cloth foundation 11 face each other. , a horizontal direction 2 is defined as a direction perpendicular to the vertical direction 1, and a depth direction in which the rising formwork 21 and the base formwork 22 are connected, and a direction perpendicular to both the vertical direction 1 and the horizontal direction 2. A front-back direction 3 is defined.

[overall structure]
In this embodiment, as shown in FIG. 1, a formwork 10 for a cloth foundation for forming a cloth foundation 11 that supports the frame of a building such as a house will be described. The formwork 10 for a cloth foundation is made by rolling crushed stone 12, laying mortar 13 on top of the crushed stone 12, installing supporting material 20 such as a reinforcing bar base on the laying mortar 13, and placing reinforcing bars 14. After that, it is assembled. When the formwork 10 for a cloth foundation is assembled, fresh concrete is poured into the formwork to form a cloth foundation 11. The shaped cloth foundation 11 has a rising portion 15 that supports the foundation of the building and a bottom portion 16 that supports the rising portion 15.

The formwork 10 for a cloth foundation includes a support member 20, a rising formwork 21, and a base formwork 22.

[Support material 20]
As shown in FIG. 1, in the supporting member 20 installed on the mortar 13, an inverted U-shaped bar 19 extends upward from the mortar 13, and also extends in the left-right direction 2. The bar 19 extends from below one side of the pair of rising formworks 21 to below the other side. The bar 19 is located below the pair of rising formworks 21, and the support member 20 supports the pair of rising formworks 21. A connecting member 23 is located between the support member 20 and the rising formwork 21. A plurality of supporting members 20 are arranged in the front-rear direction 3 (not shown).

[Rising formwork 21]
As shown in FIG. 1, the rising formwork 21 is a formwork for forming the rising portion 15 of the cloth foundation 11. The rising formwork 21 is connected to the base formwork 22 by a connecting member 23, and is located above the base formwork 22. Along the shape of the cloth foundation 11, for example, as shown in FIG. 3, a plurality of rising formworks 21 are arranged and connected in the front-rear direction 3. As shown in FIG. 2, the rising formwork 21 has a wall panel 26, an upper crosspiece 27, a vertical crosspiece 28, and a lower crosspiece 29. In the rising formwork 21, no horizontal rail is arranged between the upper rail 27 and the lower rail 29.

As shown in FIGS. 1 and 2, the wall panel 26 is a part that forms the outer surface of the rising portion 15 in the left-right direction 2. As shown in FIGS. The wall panels 26 are arranged parallel to each other in the assembled state in which the fabric foundation formwork 10 is assembled on the crushed stone 12. The wall panel 26 is a rectangular flat plate with flat surfaces facing each other.

The upper crosspiece 27 is located on the outer side of the upper end of the wall panel 26. More specifically, the upper crosspiece 27 is an elongated flat plate, and extends from the upper end of the wall panel 26 toward the outside, which is the opposite side to the opposing sides.

The lower crosspiece 29 is located outside the lower end of the wall panel 26. More specifically, the lower crosspiece 29 is an elongated flat plate, and the outer edge 31 is bent upward. The lower crosspiece 29 extends from the lower end of the wall panel 26 toward the outside in the left-right direction 2. The lower crosspiece 29 is formed with a through hole 33 into which a bolt 55 (described later) is inserted.

The vertical bar 28 extends along the vertical direction 1 so as to connect the upper bar 27 and the lower bar 29 on the outside of the wall panel 26. In one rising formwork 21, a plurality of vertical bars 28 are arranged at intervals in the front-rear direction 3.

As shown in FIG. 3, a locking member 18 that connects a plurality of rising forms 21 arranged in the longitudinal direction 3 is arranged on a vertical bar 28 located at one end of the rising formwork 21 in the longitudinal direction 3. . The locking member 18 has a shaft that is inserted into a through hole formed in the vertical bar 28, and an arm that can clamp the vertical bars 28 adjacent to each other in the front-rear direction 3. The plurality of rising formworks 21 are connected in the front-rear direction 3 by a locking member 18.

[Base formwork 22]
As shown in FIGS. 1 and 2, the base formwork 22 is a formwork for molding the bottom portion 16 of the cloth foundation 11. The base formwork 22 is connected to the lower crosspiece 29 of the rising formwork 21 by a connecting member 23. A plurality of base forms 22 are arranged and connected in the front-rear direction 3. The base formwork 22 is made of synthetic resin. The base formwork 22 has a base body 35, an installation part 36, an upper end part 37, and a hanging part 38.

As shown in FIGS. 1 and 2, the base body 35 has a plate shape that is curved into a dome shape so as to swell outward, and extends in the front-rear direction 3 (see FIG. 1). A plurality of ribs 39 are formed on the base body 35 at intervals in the front-rear direction 3. The rib 39 has a convex shape in which a portion of the base body 35 protrudes outward, and extends along the up-down direction 1. The base body 35 is reinforced by the ribs 39.

The installation portion 36 has a flat plate shape extending outward from the lower end of the base body 35. The installation part 36 is installed on the crushed stone 12. Although not shown in each figure, the installation portion 36 may have a through hole through which a fixture for fixing the base formwork 22 to the ground is inserted.

As shown in FIG. 4, the upper end portion 37 is located above the base body 35 in the assembled state. As shown in FIG. 2, the upper end portion 37 is an elongated flat plate and extends in the left-right direction 2 and the front-back direction 3 (an example of the horizontal direction). The upper end portion 37 in this embodiment is located on the lower crosspiece 29 in the assembled state. The dimension of the upper end portion 37 along the left-right direction 2 is smaller than the dimension of the lower crosspiece 29 along the left-right direction 2. A plurality of slits 39A are formed in the upper end portion 37 at intervals in the front-rear direction 3. The intervals between the plurality of slits 39A are the same as the intervals between the vertical bars 28 of the rising formwork 21. The vertical bar 28 is inserted into the slit 39A.

The hanging portion 38 is an elongated flat plate extending downward from the upper end portion 37. In other words, the hanging portion 38 connects the base body 35 and the upper end portion 37. The hanging portion 38 is located on the outside of the lower crosspiece 29.

As shown in FIG. 3, the dimension of each base formwork 22 in the front-rear direction 3 is different from the dimension of each rising formwork 21 in the front-rear direction 3. In this embodiment, the dimension of the base formwork 22 in the front-rear direction 3 is longer than the dimension of the upright formwork 21 in the front-rear direction 3. The joints when the plurality of base forms 22 are connected in the front-rear direction 3 do not match the joints when the plurality of rising forms 21 are connected in the front-rear direction 3 . The ends of the base formwork 22 that are continuous in the front-rear direction 3 are arranged so as to overlap each other.
[Connecting member 23]
The connecting member 23 connects the base formwork 22 to the lower crosspiece 29 of the rising formwork 21. As shown in FIG. 4, the connecting member 23 is located outside the lower end of the upright formwork 21 in the assembled state. The connecting member 23 includes an angle member 40, a fixing plate 41, a fixture 42, and a wedge member 43.

The fixing plate 41 is placed on the lower crosspiece 29 of the rising formwork 21 and is fixed to the lower crosspiece 29 by an angle member 40. The fixed plate 41 is arranged between the vertical bars 28 adjacent to each other in the front-rear direction 3. As shown in FIGS. 2 and 3, a plurality of fixing plates 41 are arranged in the front-back direction 3. The fixed plate 41 has a base portion 45 and a convex piece 46

The base portion 45 has a plate shape extending in the left-right direction 2 and the front-back direction 3. The base portion 45 is arranged on the lower crosspiece 29. The width of the base portion 45 in the left-right direction 2 is smaller than the distance between the wall panel 26 and the edge 31 of the lower crosspiece 29 along the left-right direction 2. The base portion 45 is positioned on the lower crosspiece 29 in the left-right direction 2 by the wall panel 26 and the edge 31. The thickness of the base portion 45 (dimension in the vertical direction 1) is the same as the dimension in which the edge 31 protrudes from the upper surface of the lower crosspiece 29. The base portion 45 is formed with a through hole 34 into which a bolt 55 (described later) is inserted.

The convex piece 46 is a plate-shaped member that protrudes upward from the upper surface of the base portion 45 . The main surface of the convex piece 46 faces in the left-right direction 2. The dimension of the convex piece 46 in the front-rear direction 3 is smaller than the dimension of the base portion 45 in the front-rear direction 3. The convex piece 46 is arranged at a central position between the vertical bars 28 adjacent to each other in the front-rear direction 3 (see FIG. 3). As shown in FIG. 4, the convex piece 46 is located inside the upper end 37 of the base formwork 22 in the assembled state. The protruding piece 46 has a second through hole 47 that penetrates in the left-right direction 2. The second through hole 47 is located upwardly away from the upper surface of the base portion 45 . The distance between the upper surface of the base portion 45 and the second through hole 47 corresponds to the thickness of the upper end portion 37 of the base formwork 22.

The angle member 40 is located at the tip of the lower crosspiece 29 so as to cover the upper end portion 37 and the hanging portion 38 in the assembled state. The angle member 40 has an L-shape in cross section and extends in the front-rear direction 3 (see FIG. 1). The angle member 40 is fixed to the rising formwork 21 by a fixing plate 41 and a wedge member 43. The angle member 40 has a first part 48 and a second part 49. As shown in FIG. 3, the dimension of each angle member 40 in the front-rear direction 3 is the same as the dimension between the inner sides of the vertical bars 28 at both ends of each rising formwork 21 in the front-rear direction 3. One angle member 40 fits inside one base formwork 22.

As shown in FIG. 4, the first portion 48 is located above the base portion 45 of the fixed plate 41 in the assembled state, and extends in the left-right direction 2 and the front-back direction 3. More specifically, the first portion 48 is located on the upper end portion 37 of the base formwork 22 disposed on the upper surface of the base portion 45 and the upper surface of the edge 31. That is, the upper end portion 37 is located between the first portion 48 and the base portion 45. The dimension of the first portion 48 along the left-right direction 2 is longer than the dimension of the upper end portion 37 along the left-right direction 2. As shown in FIG. 2, the first portion 48 has a first through hole 50 and a slit 51. As shown in FIG.

As shown in FIG. 4, the first through hole 50 is arranged at the end of the first portion 48 that is close to the wall panel 26 (the left end in FIG. 4). In the assembled state, the protruding piece 46 is inserted into the first through hole 50.

As shown in FIG. 1, the slit 51 is arranged at a position facing the vertical bar 28 of the first portion 48. As shown in FIG. The slit 51 is formed in a concave shape that opens toward the vertical bar 28 . A plurality of slits 51 are arranged at intervals in the front-rear direction 3 in the first portion 48 .

As shown in FIGS. 1 and 4, the second portion 49 hangs down from the outer end of the first portion 48 along the lower crosspiece 29. As shown in FIGS. The second portion 49 is located outside the base portion 45 and the lower crosspiece 29 in the assembled state, and extends in the up-down direction 1 and the front-back direction 3. More specifically, the second portion 49 is located further outside the hanging portion 38 of the base formwork 22, which is placed outside the edge 31 of the lower crosspiece 29. That is, the hanging portion 38 is located between the lower crosspiece 29 and the second portion 49.

The fixture 42 fixes the fixing plate 41 to the lower crosspiece 29. As shown in FIGS. 2 and 4, the fixture 42 fixes the base portion 45 of the fixing plate 41 to the lower crosspiece 29. As shown in FIGS. A plurality of fixtures 42 are arranged in the front-rear direction 3. The fixture 42 includes a seat 54, a bolt 55, and a nut 56.

The seat portion 54 has a flat plate shape and extends in the left-right direction 2 and the front-back direction 3. The seat portion 54 is arranged below the lower crosspiece 29 in the assembled state.

Bolt 55 extends upwardly from seat 54 . The bolt 55 communicates with the through hole 33 of the lower crosspiece 29 and the through hole 34 of the base portion 45 . A nut 56 is screwed onto the bolt 55 to fix the fixing plate 41 to the lower crosspiece 29.

As shown in FIGS. 2 and 4, the wedge material 43 is inserted into the second through hole 47 of the fixing plate 41. The wedge member 43 is located above the first portion 48 of the angle member 40 that is inserted into the convex piece 46 (see FIG. 4). The wedge material 43 is plate-shaped and tapered toward one end (the left end in FIG. 2). The maximum width of the wedge member 43 in the front-rear direction 3 is larger than the dimension of the second through hole 47 in the front-rear direction 3. The minimum width of the wedge member 43 in the front-rear direction 3 is smaller than the dimension of the second through hole 47 in the front-rear direction 3.

[Assembling process of formwork 10 for cloth foundation]
Hereinafter, an example of the assembly process of the formwork 10 for a cloth foundation according to the present embodiment will be described with reference to FIG. 5.

When assembling the formwork 10 for a cloth foundation, an operator first installs the supporting material 20 on the laying mortar 13. In addition, reinforcing bars 14 and anchor bolts (not shown), which serve as reinforcing bars, are fixed to the support member 20 and the like.

Next, the rising formwork 21 is fixed on the support material 20. After fixing the rising formwork 21 to the support member 20, as shown in FIG. The plate 41 is fixed to the standing formwork 21. Note that the fixing plate 41 may be fixed to the rising formwork 21 before fixing the rising formwork 21 to the support material 20.

As shown in FIG. 5(b), the upper end portion 37 of the base formwork 22 is placed on the rising formwork 21 to which the fixing plate 41 is fixed. At this time, the hanging portion 38 of the base formwork 22 is brought into contact with the edge 31 of the lower crosspiece 29 of the rising formwork 21.

As shown in FIG. 5(c), the first through hole 50 of the angle material 40 is connected to the convex piece 4 of the fixing plate 41 so that the upper end 37 and the hanging portion 38 of the base formwork 22 are covered with the angle material 40. Insert into. The wedge material 43 is inserted into the second through hole 47 of the convex piece 46 in the direction shown by the arrow P in FIG. Thereby, the base formwork 22 is positioned in the vertical direction 1 and the horizontal direction 2 with respect to the rising formwork 21.

As described above, when the base formwork 22 is connected to the rising formwork 21 via the connecting member 23, since the dimensions in the front-back direction 3 are different, a part of the base formwork 22 is separated from the rising formwork 21 in the front-back direction. 3 may protrude. As shown in FIG. 3, the protruding portion of the base formwork 22 is fixed to another rising formwork 21 by a connecting member 23.

The installation portion 36 of the base formwork 22 is fixed to the ground by inserting a rod or the like into the through hole. Concrete is poured into the cloth foundation formwork 10 thus installed and cured. After the concrete hardens, the upright formwork 21 is removed, but the base formwork 22 is buried in the ground together with the base portion of the cloth foundation without being removed.

[Actions and effects of this embodiment]
According to this embodiment, the base formwork 22 can be fixed between the rising formwork 21 and the angle material 40 without using a member to tension the horizontal beams, so there is no horizontal beam on the rising formwork 21. Even in this case, the base formwork 22 can be connected to the rising formwork 21 by the connecting member 23. Moreover, since the base formwork 22 is located between the rising formwork 21 and the angle material 40 and connected in a sandwiched state, the fixed positions of the base formwork 22 and the rising formwork 21 in the front-rear direction 3 are fixed. Not limited. Therefore, even if the base formwork 22 and the rising formwork 21 have different dimensional standards, they can be connected to each other in the front-rear direction 3.

Further, according to the present embodiment, the base portion 45 of the fixing plate 41 and the lower crosspiece 29 of the rising formwork 21 can be fixed by threading the nuts 56 onto the bolts 55 of the fixture 42. Therefore, the fixing plate 41 can be attached so that the position of the convex piece 46 in the front-rear direction 3 is adapted to the upright formwork 21.

Further, according to the present embodiment, the first portion 48 of the angle member 40 is located between the base portion 45 from which the convex piece 46 projects and the wedge member 43 inserted into the second through hole 47 of the convex piece 46. Therefore, the upward movement of the angle member 40 is restricted by the wedge member 43. Therefore, even if an external force or load is applied during work, the angle member 40 can be fixed so as not to come off from the protrusion piece 46.

Further, according to the present embodiment, in the first portion 48 of the angle member 40, the slit 51 into which the vertical bar 28 of the rising formwork 21 is inserted is arranged in the front-rear direction 3. Therefore, the angle member 40 extending long in the front-rear direction 3 can be arranged in the front-rear direction 3 while avoiding the vertical bars 28 arranged on the rising formwork 21, and the strength of the rising formwork 21 can be 28, it is possible to suppress an increase in the number of parts of the connecting member 23.

Moreover, according to this embodiment, the rising formwork 21 has the upper crosspiece 27 and the lower crosspiece 29, but does not have a horizontal crosspiece. Therefore, while suppressing a decrease in the strength of the rising formwork 21 by the upper crosspiece 27, the overall weight of the rising formwork 21 can be reduced and simplified by not arranging the horizontal crosspieces.

Further, according to the present embodiment, since the position of the slit 51 of the angle member 40 is distant from the first through hole 50, the convex piece 46 of the fixing plate 41 inserted into the first through hole 50 is positioned farther than the slit 51. It can be placed up to a position close to the rising formwork 21. As a result, it becomes possible to extend the upper end portion 37 of the base formwork 22 to a position close to the rising formwork 21 where it does not interfere with the convex piece 46.

Furthermore, according to the present embodiment, the weight can be reduced by making the base formwork 22 made of synthetic resin. Therefore, the work burden on the worker when assembling the base formwork 22 and the rising formwork 21 can be reduced.

[Modified example]
In the embodiment described above, the upper end portion 37 of the base formwork 22 is located between the first portion 48 and the base portion 45, and the hanging portion 38 is located between the lower crosspiece 29 and the second portion 49. Although the formwork 10 for a cloth foundation has been described, the structure is not limited to this.

As shown in FIG. 6, in the cloth foundation formwork 10A, the upper end 37 of the base formwork 22 is located between the lower crosspiece 29 of the rising formwork 21 and the fixture 42, and the hanging part 38 is It may be located between the fixture 42 and the second part 49.

The upper end portion 37 in the modified example is located below the lower crosspiece 29 in the assembled state. In the upper end portion 37, a plurality of slits 39A are not formed in the front-rear direction 3.

The first portion 48 of the base formwork 22 is located on the upper surface of the base portion 45 and the upper surface of the edge 31 in the assembled state. The second portion 49 is located on the outside of the depending portion 38 and the edge 31 that are located on the outside of the fixture 42 .

The fixture 42 fixes the fixing plate 41 to the lower crosspiece 29, and also sandwiches the upper end of the base formwork 22 between it and the lower crosspiece 29. That is, the seat portion 54 is arranged below the upper end portion 37.

[Assembling process of the cloth foundation formwork 10A according to the modified example]
Hereinafter, a process for assembling a formwork 10A for a cloth foundation according to a modification will be described with reference to FIG. 7.

Similar to the formwork 10 for cloth foundations according to the embodiment, the worker first installs the support material 20 on the laid mortar 13, fixes the reinforcing bars 14, etc. to the support material 20, and then stands up on the support material 20. The formwork 21 is fixed.

As shown in FIG. 7A, after the rising formwork 21 is fixed to the support member 20, the fixing plate 41 is placed on the upper surface of the plate portion 30 of the lower crosspiece 29. Next, as shown in FIG. 7(b), the fixture 42 is fixed to the lower crosspiece 29 with the upper end 37 of the base formwork 22 adjacent to the lower surface. Thereby, the upper end portion 37 is sandwiched and fixed between the lower crosspiece 29 and the fixture 42.

As shown in FIG. 7(c), the angle members 40 are arranged so that the base portion 45 of the fixed plate 41, the edge 31 of the lower crosspiece 29, and the hanging portion 38 of the base formwork 22 are covered with the angle members 40. 1. The through hole 50 is fitted into the protrusion 46 of the fixing plate 41. The wedge member 43 is inserted into the second through hole 47 of the convex piece 46 in the direction shown by the arrow Q in FIG. A portion of the base formwork 22 protruding from the rising formwork 21 in the front-rear direction 3 is fixed to another rising formwork 21 by a connecting member 23, as in the above-described embodiment.

Although the lower crosspiece 29 in this embodiment is an elongated flat plate, and the outer edge 31 is bent upward, the present invention is not limited to this configuration. The lower crosspiece 29 may not have a bendable portion at its tip. That is, the lower crosspiece 29 may have a shape extending from the lower end of the rising portion 15 toward the outside in the left-right direction 2.

10,10A...Formwork for cloth foundation
20...Support material 21...Rising formwork 22...Base formwork 23...Connecting member 27...Upper bar 28...Vertical bar 29...Lower bar 37...Upper end portion 38... hanging part
40...Angle material 41...Fixing plate 42...Fixing tool 43...Wedge material 45...Base portion 46...Convex piece 47...Second through hole 48...First Part 49...Second part 50...First through hole 51...Slit 54...Seat part 55...Bolt 56...Nut

Claims (7)

supporting material;
a pair of rising formworks supported by the supporting material;
A base formwork connected to the lower crosspiece of the rising formwork by a connecting member,
The above connecting member is
a fixing plate having a base portion and a convex piece protruding from the base portion;
a fixture that is located below the lower rail and fixes the base portion to the lower rail so that the convex piece projects upward;
An angle material having a first part having a first through hole through which the convex piece is inserted and located above the base part, and a second part hanging downward from the first part along the lower crosspiece. and,
The base formwork has an upper end portion extending in the horizontal direction and a hanging portion extending downward from the upper end portion,
The upper end portion is located between the first portion and the base portion, or between the lower crosspiece and the fixture,
The hanging part is a formwork for a cloth foundation located between the lower rail or the fixture and the second part. The above fixture is
The seat and
a bolt extending from the seat and communicating with the lower crosspiece and the base;
The formwork for a cloth foundation according to claim 1, further comprising a nut screwed into the bolt. The convex piece has a second through hole,
The formwork for a cloth foundation according to claim 1 or 2, wherein the first part is located between the wedge material inserted into the second through hole and the base part. The rising formwork has a vertical bar extending upward from the lower bar,
4. The formwork for a cloth foundation according to claim 1, wherein the first part has a slit into which the vertical beam is inserted. The mold for a cloth foundation according to claim 4, wherein the rising formwork has an upper crosspiece that is continuous with the upper end of the vertical crosspiece, and does not have a horizontal crosspiece between the upper crosspiece and the lower crosspiece. frame. a plurality of the first through holes are located in the first part;
The formwork for a cloth foundation according to claim 5, wherein the slit is located between adjacent first through holes. The formwork for a cloth foundation according to any one of claims 1 to 6, wherein the base formwork is made of synthetic resin.

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