JP2002220922A - Mold form supporting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold form supporting device for constructing an integral foundation with which a mold form to form an erecting portion of the foundation can be supported with a simple operation, and after the mold form is removed, no trace is left on the foundation. SOLUTION: A mold form supporting device comprises a metal base 3 including a base board 1 fixed on the ground, bolts 2a and 2b installed upright on the base board 1, a mold form supporting portion 6 provided with a bolt inserting part 4 on the bottom face in which the bolt 2b is inserted, a screw axis 5 standing upright from the top face, a peripheral wall with a draft angle for taking off the mold form upwards, and a nut 7 to be attached with the screw axis 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a form supporting apparatus mainly used for supporting and fixing a form when concrete for a foundation of a building is poured.

[0002]

2. Description of the Related Art The foundation of a building consists of a single-soil portion and a rising portion.
First of all, concrete in the slab was first poured in, and after it had hardened, a formwork was erected on it and the concrete in the rising portion was driven in. In the foundation thus formed, a boundary is formed between the concrete portion between the soil portion and the rising portion, and a crack may be generated there, and there is a problem in strength. Therefore, in recent years, there has been a demand for an integrated foundation in which a soil portion and a rising portion are simultaneously formed by one-time concrete pouring.

[0003]

In order to form an integrated foundation, as shown in FIG. 4 (a), a form 10 for a rising portion is suspended in the air by the thickness of the soil. Must be supported by. At present, the installer of the formwork presses the formwork from the outside and supports it with something like a bar 25, or puts out a metal piece 26 inside the formwork 10 and welds it to the reinforcing steel 27 inside the foundation, By using an ad hoc method such as clogging the clogs 28 under the frame 10, it manages to cope with it while spending many times as much effort as usual. As for the completed foundation, as shown in FIG. 4 (b), the metal fittings 26 and 28 used to support the formwork are exposed on the surface of the foundation, and the appearance is simply poor. In addition, high durability and strength could not be obtained because rainwater penetrated into the inside of the foundation through the metal fittings 26 and 28. Welding metal fittings to the reinforcing bar 27 inside the foundation is prohibited because it significantly reduces the strength of the reinforcing bar.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and when a one-piece foundation is constructed, a formwork at a rising portion can be reliably supported by a simple operation. An object of the present invention is to provide a supporting device for a formwork that can leave no trace after removing the formwork.

[0005]

According to a first aspect of the present invention, there is provided a formwork supporting apparatus, comprising: a base metal member having a base plate fixed on the ground and a bolt vertically provided on a base plate; It comprises a form receiving tool having a bolt insertion portion on the lower surface side, a screw shaft protruding on the upper surface side, and a draft upwardly formed on the peripheral wall, and a nut corresponding to the screw shaft. This formwork supporting device is arranged at intervals below the formwork at the rising portion of the foundation, and clamps the formwork lower beam with the formwork receiving member and the nut to float the formwork in the air. It is firmly supported in a state, and an integrated foundation can be easily constructed. Further, the form receiving device can be removed from the foundation after the concrete has hardened, and if the hollow formed there is filled with mortar or the like, no trace remains. The form receiving member is preferably formed of a material having good releasability from concrete, for example, a synthetic resin or a metal, and a commercially available P-con may be used as the form receiving member.

As described in claim 2, by providing the bolt of the base metal with a length adjusting means, the supporting height of the formwork can be adjusted, and it is possible to cope with a difference in the thickness of the intersoil portion of the foundation.

Further, according to a third aspect of the present invention, a connecting portion in a lateral direction is formed in the base metal fitting, and the base metal fittings of the form supporting device for supporting the facing form are connected to each other by a connecting rod. Thus, the spacing between the facing molds is reliably maintained.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of a form supporting device of the present invention, and FIG. 2 shows a state in which the form supporting device supports a pair of forms for a rising portion of a foundation. Is shown. The form supporting apparatus according to the present invention comprises a base metal member 3 having bolts 2a and 2b connected on a base plate 1 by a sleeve 8 and standing vertically,
And a nut 7 attached to the tip of the mold and fixed to the lower surface of the mold 10.

The base plate 1 of the base fitting 3 has a side of 8c.
m square metal plate, discarded concrete 12
Concrete nail 13 to fix it to the ground
The nail holes 14 for driving are formed at four corners. At the center of the base plate 1, bolts 2a and 2b are erected vertically. The bolts 2a and 2b are divided into upper and lower parts, and are connected to each other by a sleeve 8 having a female thread on the inner surface. One of the upper and lower screws 15a and 15b of the sleeve 8 is a right-hand screw and the other is a left-hand screw. By rotating the sleeve 8, the entire bolts 2a and 2b expand and contract. A connecting portion 9 is provided in the sleeve 8 in the lateral direction, and the sleeves 8 can be connected to each other by inserting threaded connecting rods 11 at both ends.

The form receiving member 6 is made of a resin receiving body 16.
In addition, a metal screw shaft 5 is inserted and fixed. The receiving body 16 has a conical shape so that it can be removed from the solidified concrete, and has a mortar-shaped recess 23 on the upper surface. The section of the screw shaft 5 built into the receiving body 16 has a hexagonal cross section.
Hang a tool such as a box wrench on the
The whole can be rotated. The screw shaft 5 is provided with a screw hole 4 for inserting the tip of the bolt 2b of the base metal fitting from the lower surface side.

Subsequently, a method of using the above-described form supporting apparatus will be described. First, the base fittings 3 are dispersed and arranged on the flat ground on which the discarded concrete 12 is cast and where the formwork 10 is to be erected while referring to the drawing of the foundation. Next, the form receiving member 6 is attached to the tip of the bolt 2b of the base fitting 3, a hole 24 is opened in the lower rail 17 of the form 10 and the screw shaft 5 is inserted. , And the nut 7 is screwed into the screw shaft 5 to be fixed. Subsequently, the sleeve 8 is turned to adjust the height of the mold 10, and the sleeves 8 of the supporting devices that support the facing mold 10 are connected to each other with the connecting rods 11, so that the position of the mold 10 is accurately determined. Once decided, the concrete nail 13 is driven into the base plate 1 and fixed. The procedure up to this point may be slightly different. Finally, if a not-shown locking tool is passed over and fixed to the upper crosspieces of the facing formwork 10, the formwork 10 is firmly supported and fixed while floating in the air. It is not necessary to connect the dam plates 18 of the formwork 10 with a separator as in the related art. Reference numeral 27 in the drawing is a reinforcing bar.

When the installation of the formwork 10 is completed, concrete 19 is poured into the formwork 10 to form the foundation portion 20 between the soil and the rising portion 21 at a time. When the concrete 19 has hardened, the locking member and the nut 7 are removed and the formwork 10 is removed.
Remove. The mold receiver 6 can also be easily removed from the concrete 19 by rotating it with a tool such as a box wrench. A hole is made in the place where the form receiving member 6 was buried, and the hole is filled with a mortar or a sealing material 22 for repair. In this way, an integrated foundation can be easily constructed.

The form supporting apparatus of the present invention is not limited to the above-described embodiment. For example, as for the length adjusting means of the bolt of the base fitting 3, the sleeve 8 may be welded to the base plate 1 so that it can be adjusted with only one bolt 2b. The bolts may be simply welded to the base plate 1. Also, the connecting portion 9
Need not necessarily be provided on the sleeve 8, and may be formed in any manner as long as the base fittings can be connected to each other.

[0014]

According to the form supporting apparatus of the first aspect,
The formwork of the rising part of the foundation can be firmly supported in the state of being suspended in the air, and a solid foundation in which the part between the soil and the rising part is integrated can be easily constructed. In addition, it is possible to leave no trace of the form support device on the completed foundation.

According to the second aspect of the invention, the supporting height of the formwork can be freely adjusted, and it is possible to cope with the difference in the thickness of the portion between the soils and the unevenness of the ground.

Further, according to the third aspect of the present invention, it is possible to maintain the interval between the opposing molds, and it is not necessary to connect the molds with the separator as in the related art. It can be further simplified.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a form support device according to the present invention.

FIG. 2 is a longitudinal sectional view showing a state in which a pair of molds at a rising portion are supported by the mold supporting device of the present invention.

FIG. 3 is a longitudinal sectional view of a foundation formed by using the form support device of the present invention.

FIGS. 4A and 4B are a longitudinal sectional view of a mold when a conventional integrated foundation is formed and a longitudinal sectional view of a foundation formed thereby.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base plate 2a, 2b Bolt 3 Base metal fitting 4 Screw hole (insertion part) 5 Screw shaft 6 Formwork holder 7 Nut 8 Sleeve (length adjustment means) 9 Connecting part 10 Formwork 11 Connecting rod

Claims (3)

[Claims] A base metal fitting (3) having bolts (2a, 2b) erected vertically on a base plate (1) fixed on the ground.
And a form receiver (6) having an insertion portion (4) for the bolt (2b) on the lower surface side, a screw shaft (5) protruding on the upper surface side, and a draft upwardly formed on the peripheral wall. And a nut (7) corresponding to the screw shaft (5). 2. The bolt (2a, 2b) of the base fitting (3).
2. Formwork supporting device according to claim 1, characterized in that a length adjusting means (8) is provided in 2b). 3. A base (3) is provided with a connecting portion (9) in a lateral direction, and the base fittings (3) of a form supporting apparatus for supporting the facing form (10) are connected with a connecting rod (3). 1
2. The connection according to claim 1, wherein
Or the form support device according to 2.