JPH0524761Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention (industrial application field) This invention relates to a formwork structure for a base part for forming the base part of foundation concrete in buildings such as houses.

(Prior art) In recent years, when forming foundation concrete for buildings such as houses, a method has been adopted in which the base and rising parts of the foundation concrete are integrally formed at the same time in order to streamline the process. .

In order to cope with such a situation, a mold for the base part has been proposed, for example, as shown in Japanese Utility Model Application Publication No. 57-102652. This formwork for the base part has a horizontal plate part and a vertical plate part in the center, and a substantially channel-shaped mounting part and support part are bent at both upper and lower edges. Then, with the pair of base formworks facing each other at the concrete pouring position,
Formworks for the rising portions are arranged opposite to each other at the upper end attachment portions and fixed by connecting fittings, and a spacer is interposed between the frames for the rising portions to form the frame.

(Problem to be solved by the invention) However, in this conventional configuration, the horizontal plate part and the vertical plate part of the formwork for the base part are integrally bent, and the upper end of the formwork for the base part Since the formwork for the rising part is placed directly on the edge and fixed by the connecting metal fittings, when concrete is poured from the upper end between the formworks for the rising part and the base part and the rising part are integrally formed, There were problems such as the flow pressure of concrete being applied to the base formwork, causing the base formwork to float and causing the rising part formwork to tilt.

To this end, in the past, concrete was poured after backfilling a large amount of soil onto the base formwork in order to prevent the base formwork from floating as much as possible, but this was not an adequate measure. Furthermore, when backfilling with such a large amount of soil, there was a problem in that it became extremely difficult to cut out the formwork for the base part after forming the foundation concrete.

Structure of the invention (Means for solving the problem) This invention was made by paying attention to the above-mentioned problem. A pair of base formworks are placed, and in order to fix and hold the base formworks in an upright state, a metal bar is bent into an almost inverted U shape, and the base formworks are attached to both ends of the metal bar. A holding member that has a locking part that is inserted into the upper locking hole and a driving part that is driven into the ground, and covers an open part between the upper end of the base part mold and the lower end of the rising part mold. For this purpose, a mold for the base part and a lid member mounted on the support stand are provided at both ends.

(Function) Therefore, in this invention, when the base part and the rising part of the foundation concrete are simultaneously integrally formed by pouring concrete, the base part of a predetermined width can be reliably formed without moving the formwork for the base part. In addition, even if the lid member floats, the formwork for the rising part will not tilt, and a vertical rising part can be formed accurately. There is no need to backfill the mold, and the mold for the base part and the lid member can be easily cut out after molding.

(First Embodiment) A first embodiment of this invention will be described below with reference to FIGS. 1 to 6.

First, to explain the framework structure of this embodiment, as shown in Fig. 1, a chestnut stone 2 is installed in the groove 1 provided at the position where the foundation concrete is placed, and the top surface of the chestnut stone 2 is attached to the base concrete as needed. Disposable concrete 3 is formed. A substantially rectangular frame-shaped support 4 is placed on the waste concrete 3, and a pair of rising part forms 5 are arranged and supported in a vertically opposed state through spacer fittings 6 at the center of the upper part. A base reinforcing bar 7 is supported approximately in the vertically central portion of the support table 4, and a rising portion reinforcing bar 8 is extended and supported above the central portion in the width direction.

On both sides of the support base 4, a pair of base formworks 9 are arranged vertically facing each other on the waste concrete 3. As shown in FIGS. 2 to 4, the base part formwork 9 of this embodiment has an almost complete frame structure with only a part of the outer surface open, and the basic shape is almost a straight line in plan view. A formwork 9A for the straight part of the foundation concrete, a formwork 9B for the inner corner part which is approximately L-shaped in plan view, and a formwork 9C for the outer corner part which is also approximately L-shaped in plan view. A variety of items are available.

A connecting plate 10 having a substantially L-shaped cross section is fixed to one end edge of the base frames 9A to 9C, and a frame of any shape can be extended and connected via this connecting plate 10. Formwork for base part 9A to 9C
A pair of locking plates 11 are fixed to the outer surface thereof, and locking holes 12 are respectively formed in the bent portions on the outside of the upper ends thereof.

The holding member 13 for fixing and holding the base part molds 9A to 9C in an upright state is formed by bending a metal bar into a substantially inverted U shape, as shown in FIGS. 1 and 2. At one end there is a formwork 9A for the base part.
A locking portion 14 is provided which is removably inserted into the locking hole 12 on the top 9C, and a driving portion 15 is provided at the other end to be removably driven into the ground. Then, the driving part 15 of this holding member 13 is driven into the ground outside the waste concrete 3 where there is no chestnut stone 2, and the locking part 14 is connected to the base part formwork 9A~
By inserting and locking into the locking hole 12 of 9C, the formworks 9A to 9C for the base part are attached to the waste concrete 3.
It can be fixed and held in an upright position at the top.

In order to cover the open part between the upper end of the base part formworks 9A to 9C and the lower end of the rising part formwork 5, there is a gap between the upper ends of the base part formworks 9A to 9C and the support base 4. The lid member 16 is mounted and supported in an erected state. As shown in FIGS. 2 to 4, the lid member 16 of this embodiment is made of a substantially flat metal plate,
A cover member 16 for a straight portion of foundation concrete having a substantially rectangular planar shape as a basic shape so as to correspond to the base portion formworks 9A to 9C, respectively.
Three types of lid members are available: A, a lid member 16B for the inner corner portion that is approximately L-shaped in plan view, and a lid member 16c for the outer corner portion that is also approximately L-shaped in plan view.

An inner regulating piece 17 serving as a regulating portion is formed by bending upward on the inner edge of the lid members 16A to 16C, and the lid members 16A to 16C are constructed on the base molds 9A to 9C and the support base 4. In the placed state, the inner regulating piece 17 contacts the lower edge of the outer surface of the rising part formwork 5, and the lid members 16A to 1
The inward movement of 6C is now restricted. A pair of outer engagement holes 18 and an inner engagement hole 19 are formed as regulating portions on the outer edges of the lid members 16A to 16C. Width, that is, a pair of base part formworks 9A to 9C
The outer engaging hole 18 or the inner engaging hole 19 is selectively matched with the locking hole 12 on the base part formwork 9A to 9C according to the arrangement interval of the By inserting and engaging the locking portion 14 of the holding member 13 into the locking hole 12, the lid members 16A to 16C
The outward movement of people is now restricted.

Air vent holes 20 are formed near the inner sides of the lid members 16A to 16C, and concrete is poured from between the upper ends of the pair of rising part formworks 5 to integrally mold the base concrete base and the rising part at the same time. At the same time, formwork 9A to 9C for both base parts
Air accumulated between the two is discharged to the outside through the air vent hole 20.

Further, in this embodiment, in addition to the base molds 9A to 9C and the lid members 16A to 16C, a simple frame body having a substantially U-shaped longitudinal section as shown in FIGS. 5 and 6 is used. Eggplant auxiliary formwork 21A, 21
B, and an auxiliary lid member 22 made of a flat metal plate.
A and 22B are available. The locking holes 12 are formed directly on the auxiliary forms 21A and 21B.

The auxiliary formwork 21A for the end shown in Fig. 5 has a planar shape that is almost in a straight line, and is fitted to the end of the formwork 9A to 9C for the base part so that its movement can be adjusted. The length can be adjusted accordingly. The auxiliary lid member 22A for the end portion, which is substantially rectangular in plan view shown in the figure, is mounted between the auxiliary formwork 21A and the support base 4 in correspondence with the auxiliary formwork 21A.

The auxiliary formwork 21B for the corner portion shown in FIG. 6 is approximately L-shaped in plan view, and the formwork 9A to 9
It is fitted and attached to the end of C so that its movement can be adjusted, so that it can suitably correspond to the length up to the corner of the foundation concrete. An auxiliary lid member 22B for a corner portion having a substantially L-shape in plan view as shown in the figure.
is installed between the formwork 21B and the support base 4 in correspondence with the auxiliary formwork 21B.

Therefore, in the framework structure configured as described above, when pouring concrete from between the upper ends of the pair of rising part formworks 5 and integrally molding the base part and the rising part of the foundation concrete at the same time, the base part Since the formworks 9A to 9C are immovably fixed in an upright state by the holding member 13, a base portion of a predetermined width can be reliably formed. In addition, the inner edges of the lid members 16A to 16C are not connected to the formwork 5 for the rising portion, and the support base 4
Since the cover members 16A to 16C are only placed on top of the concrete, even if the lid members 16A to 16C are moved as the concrete is poured, the formwork 5 for the rising part will not be tilted, and the rising part in the vertical state can be precisely formed. can be formed into Furthermore, lid members 16A to 16C
Since it is not necessary to backfill a large amount of soil to prevent floating of the base concrete, the base part formworks 9A to 9C and the lid members 16A to 16C can be easily cut out after forming the basic concrete.

(Second Embodiment) Next, a second embodiment of this invention will be described with reference to FIGS. 7 to 10, only the parts that are different from the first embodiment.

Now, in this embodiment, the formwork 23 for the base part
has a simple frame structure with a nearly U-shaped vertical section, and the basic shape is formwork 2 for straight sections of foundation concrete.
3A, a mold 23B for the inner corner, and a mold 23C for the outer corner. Engagement notches 24 for extending and connecting other molds are formed on both sides of the lower part of the base molds 23A to 23C, and locking holes 12 are directly formed in the upper part. By inserting and locking the locking portion 14 of the holding member 13 driven into the ground into the locking hole 12, the base molds 23A to 23C can be fixed and held in an upright state. .

Further, the lid member 25 of this embodiment is made of a substantially horizontal metal plate, and is similar to the base part molds 23A to 23.
As the basic shape, corresponding to C,
A cover member 25A for a straight section of foundation concrete;
Three types of lid members 25B and 25C are available for the inner corner and the outer corner, respectively. The inner lids of the lid members 25A to 25C have an inner regulating piece 17 bent upward as a regulating part similar to that in the first embodiment, and a pair of regulating parts on the outer edge thereof. The outer regulating piece 26 is bent downward, and the cover members 25A to 25C are placed on the base molds 23A to 23C.
In the placed state, this outer regulating piece 26 comes into contact with the upper end of the inner surface of the base part molds 23A to 23C,
The outward movement of the lid members 25A to 25C is restricted.

Therefore, in this second embodiment, as in the case of the first embodiment, it is possible to reliably form a base portion of a predetermined width in the foundation concrete, and to form vertically rising portions accurately. Moreover, the molds 23A to 23C for the base portion and the lid members 25A to 25C after molding can be easily removed.

It should be noted that this invention is not limited to the configurations of the respective embodiments described above, and it is also possible to implement the invention by changing the configuration of each part as desired without departing from the spirit of this invention.

Effects of the invention As detailed above, this invention enables the base part of a predetermined width to be formed without moving the formwork for the base part when the base part and the rising part of the foundation concrete are integrally formed at the same time by pouring concrete. Not only can it be formed reliably, but even if the lid member floats, the formwork for the rising part will not tilt, allowing the vertical rising part to be formed accurately. It is not necessary to backfill with soil, and the mold for the base part and the lid member can be easily cut out after molding, which is an excellent effect.

[Brief explanation of the drawing]

Figures 1 to 6 show the first embodiment of this invention, in which Figure 1 is a partial cross-sectional view showing the framework structure, and Figure 2 is a formwork for the base part of the straight section of foundation concrete. , an exploded perspective view showing the lid member and the holding member, FIG. 3 is an exploded perspective view showing the base mold for the inner corner part and the lid member, and FIG. 4 is an exploded perspective view showing the base mold for the outer corner part. An exploded perspective view of the frame and lid member,
FIG. 5 is an exploded perspective view of the auxiliary formwork and auxiliary lid member for the end portion, and FIG. 6 is an exploded perspective view of the auxiliary formwork and auxiliary lid member for the corner portion. 7 to 10 show the second embodiment of this invention, and the seventh embodiment shows the second embodiment of this invention.
The figure is a partial sectional view showing the framework structure, Figure 8 is an exploded perspective view showing the base part mold for the straight part, the lid member and the holding member, and Figure 9 is the base part mold for the inner corner part. FIG. 10 is an exploded perspective view of the frame and the lid member. FIG. 10 is an exploded perspective view of the base part mold for the outer corner part and the lid member. 4... Support stand, 5... Formwork for rising part, 9...
... Formwork for base part, 12 ... Locking hole, 13 ... Holding member, 14 ... Locking part, 15 ... Driving part, 1
6... Lid member, 19... Engagement hole as a regulating part,
23... Formwork for the base part, 25... Lid member.

Claims (1)

[Claims for Utility Model Registration] Support stand 4 that supports a pair of rising part formwork 5
A pair of base formworks 9, 23 are placed opposite to each other on both sides of the frame, and in order to fix and hold the base formworks 9, 23 in an upright state, a metal bar is bent into an approximately inverted U-shape. a holding member 13 having locking portions 14 inserted into the locking holes 12 on the base molds 9 and 23 and a driving portion 15 driven into the ground at both ends thereof; and the base mold 9. , 23 and the lower end of the rising part formwork 5,
A formwork structure for a base part of foundation concrete, characterized in that formworks 9, 23 for the base part and lid members 16, 25 mounted on a support stand 4 are provided at both ends.