JPH08113950A - Concrete form of continuous footing - Google Patents

Abstract

PURPOSE: To improve the efficiency of the execution of works by holding each horizontal plate section of each lower form on both left and right sides by each post of both left and right sides respectively while each upper form on both left and right sides is connected at the end sections of each horizontal plate section respectively. CONSTITUTION: The horizontal lower section 1 and vertical upper section 2 of reinforcements are connected in an inverted T shape, and arranged on a ground surface. Right-side lower forms 11 and left-side lower forms 18 are disposed while surrounding the horizontal lower section 1, and the horizontal plate sections 12, 19 of the forms 11, 18 are held horizontally by a right-side post 25 and a left-side post 26 fixed onto a substrate 27. Right-side upper forms 6 and left-side upper forms 7 are assembled on the forms 11, 18 while surrounding the vertical upper section 2. Concrete is poured between the forms 11, 18 and the forms 6, 7 from a section between the upper ends of the forms 6, 7, and solidified, thus simultaneously molding a horizontal lower section 5 and a vertical upper section 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame for molding a cloth foundation with concrete.

[0002]

2. Description of the Related Art A cloth foundation made of concrete is a long continuous foundation having an inverted T-shape in longitudinal section, and a vertical upper portion is provided on a horizontal lower portion.

When manufacturing this cloth foundation, as shown in FIG. 4, long continuous reinforcing bars 1 and 2 having an inverted T-shaped vertical cross section are arranged on the ground surface, and first, on the right side of the horizontal lower part 1 of the reinforcing bar. Placing flat form frames 3 and 4 on the left and the left side respectively, pouring concrete between both form frames 3 and 4 placed on the ground surface,
The horizontal lower part 1 of the reinforcing bar is buried in concrete, and the vertical lower part 2 of the reinforcing bar projects upward to form a horizontal lower part 5 of the cloth foundation on the ground surface.

Next, after the concrete in the horizontal lower portion 5 of the cloth foundation has been cured and hardened, as shown in FIG. Shaped frames 6 and 7 are arranged, concrete is poured between the two frames 6 and 7 placed on the horizontal lower part 5 of the cloth foundation, and the vertical upper part 8 of the cloth foundation in which the vertical upper part 2 of the reinforcing bar is buried is placed. It is connected and molded on the lower horizontal portion 5 of the cloth foundation.

[0005]

However, when the cloth foundation is made of concrete as described above, first, the horizontal lower portion of the cloth foundation is formed, and then, after the concrete is hardened, the vertical upper portion of the cloth foundation is formed. Since the horizontal lower part and the vertical upper part of the fabric foundation are sequentially manufactured by molding, the labor of preparing ready-mixed concrete is required twice, and the manufacturing period becomes long. That is, it is difficult to efficiently manufacture a concrete cloth foundation.

An object of the present invention is to solve the above conventional problems.

[0007]

DISCLOSURE OF THE INVENTION The present invention is a frame for forming a cloth foundation having an inverted T-shaped vertical cross-section, in which a vertical upper portion is provided on a horizontal lower portion, with concrete, the horizontal lower surface of the fabric foundation being formed. ┓ type vertical cross-section right side lower frame with a horizontal plate forming the right side of the base and a vertical plate forming the right side of the horizontal lower part of the cloth foundation, and the height of the horizontal plate of the right lower form ┏ shaped lower section frame with a vertical plate that forms the left side of the upper surface of the horizontal bottom of the cloth foundation and a vertical plate that forms the left side of the horizontal lower section of the cloth foundation. , A left-sided column that holds the height of the horizontal plate part of the left lower formwork, and a flat plate shape that is connected to the left end of the horizontal plate part of the right lower formwork and forms the right side surface of the vertical upper part of the cloth foundation. It is established by connecting to the right end of the horizontal plate part of the upper right frame and the lower left frame, and A concrete form frame fabric basis and having a left upper form frame flat plate shape forming the side.

[0008]

In the present invention, when assembling the frames, the lower right frame and the lower left frame are arranged side by side, and the heights of the horizontal plate portion of the lower right frame and the horizontal plate portion of the lower left frame are respectively set to the right side. Established by connecting the right upper frame and the left upper frame to the left edge of the horizontal plate of the right lower frame and the right edge of the horizontal plate of the left lower frame, respectively.

After assembling the formwork, concrete is placed between the upper ends of the right upper formwork and the left upper formwork, between the right lower formwork and the left lower formwork, and between the right upper formwork and the left upper formwork. Pour into.

Then, the horizontal lower part of the cloth foundation is formed between the right lower frame and the left lower frame, and the vertical upper part of the cloth foundation is formed between the right upper frame and the left upper frame.
When the concrete hardens, a cloth foundation with an inverted T-shaped vertical cross section in which the horizontal lower part and the vertical upper part are integrated is obtained.

[0011]

According to the present invention, since the horizontal lower part and the vertical upper part of the cloth foundation are simultaneously molded by pouring the concrete once, unlike the conventional case in which the horizontal lower part and the vertical upper part of the cloth base are sequentially molded. The preparation time for ready-mixed concrete is short and the production period is short. That is, it is easy to efficiently fabricate a concrete cloth foundation.

[0012]

EXAMPLE As shown in FIG. 1, the concrete formwork of the cloth foundation of this example is a shape in which a cloth foundation having an inverted T-shaped vertical cross section in which a vertical upper portion 8 is provided on a horizontal lower portion 5 is formed by concrete. As shown in FIGS. 1 and 2, the lower right frame 11 and the lower left frame 18, which form the horizontal lower part 5 of the cloth foundation,
And a right upper frame 6 and a left upper frame 7 which form a vertical upper part 8 of the fabric foundation.

The lower right frame 11 is, as shown in FIG.
The iron plate is bent to provide a horizontal plate portion 12 for forming the right side portion of the upper surface of the horizontal lower portion 5 of the cloth foundation and a vertical plate portion 13 for forming the right side surface of the horizontal lower portion 5 of the cloth foundation to provide a ┓-shaped vertical section. It has a long length. The horizontal flat plate portion 12 penetrates the column insertion holes 14 at equidistant positions in the longitudinal direction. The vertical plate portion 13 includes
The horizontal rod insertion holes 15 are penetrated at equal intervals in the longitudinal direction. A positioning piece 16 is projected upward at the left end of the horizontal flat plate portion 12, and elongated engaging holes 17 are penetrated through the lower end of the positioning piece 16 at equal intervals in the longitudinal direction.

The lower left frame 18 is, as shown in FIG.
The iron plate is bent, and a horizontal plate portion 19 for forming the left side portion of the upper surface of the horizontal lower portion 5 of the cloth foundation and a vertical plate portion 20 for forming the left side surface of the horizontal lower portion 5 of the cloth foundation are provided to provide a ┏-shaped vertical section. It has a long length. The horizontal flat plate portion 19 penetrates through the post insertion holes 21 at equal intervals in the longitudinal direction. The vertical plate portion 20 includes
The horizontal rod insertion holes 22 are penetrated at equal intervals in the longitudinal direction. At the right end of the horizontal flat plate portion 19, a positioning piece 23 is projected upward, and at the lower end of the positioning piece 23, elongated engaging holes 24 are penetrated at equal intervals in the longitudinal direction.

As shown in FIG. 3, the right support column 25 and the left support column 26 are respectively installed at the right end and the left end of the elongated iron plate substrate 27 and arranged in parallel at a predetermined interval, and the lower ends are fixed to the substrate 27. Nuts 28 are respectively screwed into the screw shafts at the upper ends of the right-hand pillar 25 and the left-hand pillar 26.

Nuts 28 of the right side support 25 and the left side support 26
As shown in FIG. 3, the upper screw shaft portions are respectively inserted with the post insertion holes 30 penetrating the right end portion and the left end portion of the elongated iron plate support plate 29, and as shown in FIG. 1 and FIG. Right column 2
5 and the support plate 29 is mounted on the nut 28 of the left support 26 at a predetermined height. As shown in FIGS. 1 and 2, the screw shaft portions on the support plates 29 of the right support 25 and the left support 26 respectively insert the support insertion holes 14 of the lower right frame 11 and the support insertion holes of the lower support 18 of the lower left side, respectively. The horizontal plate portion 12 of the right lower frame 11 is inserted into the right end portion and the left end portion of the support plate 29 through the holes 21.
And the horizontal plate portion 19 of the left lower frame 18 are superposed and mounted,
The nut 3 is attached to each of the screw shaft portion on the right lower frame 11 of the right column 25 and the screw shaft portion on the left lower frame 18 of the left column 26.
1 are screwed together, and the horizontal plate portion 12 of the right lower frame 11 and the right end portion of the support plate 29, and the horizontal plate portion 19 of the left lower frame 18 and the left end portion of the support plate 29 are respectively provided with two nuts 28 and 31. It is tightened up.

That is, the lower right frame 11 and the lower left frame 1
As shown in FIG. 1, 8 are parallel to each other facing each other at a predetermined interval, and the right support 25 and the left support 26 respectively connect the horizontal plate portion 12 of the right lower frame 11 and the horizontal plate portion 19 of the left lower frame 18 to each other. It is held horizontally at a predetermined height.

The horizontal rod insertion hole 15 of the lower right frame 11 and the horizontal rod insertion hole 22 of the lower left frame 18 respectively have horizontal rods 3 respectively.
2 through which the right and left screw shafts are inserted, and the right and left screw shafts of the horizontal bar 32 are respectively screwed into the two screw shafts as shown in FIGS. 1 and 2. 33 at the lower right frame 1
The vertical plate portion 13 of No. 1 and the vertical plate portion 20 of the left lower frame 18 are tightened.

The right end portion and the left end portion of an engaging piece 34 of an elongated iron plate are inserted into the engaging holes 17 of the right lower frame 11 and the engaging hole 24 of the left lower frame 18, respectively, as shown in FIG. As described above, the flat wooden right upper frame 6 is mounted on the right end of the engaging piece 34 overlapped with the horizontal plate portion 12 of the right lower frame 11, and the lower inner surface of the right upper frame 6 is fixed. Right lower frame 11
And the right end of the engaging piece 34 protruding from the outer surface of the right upper frame 6 is bent upward to overlap the lower portion of the outer surface of the right upper frame 6.

On the left end of the engaging piece 34 superposed on the horizontal plate portion 19 of the left lower frame 18, as shown in FIGS. 1 and 2, a flat wooden upper left frame 7 is formed. Put up,
The lower inner surface of the left upper frame 7 is overlapped with the positioning piece 23 of the left lower frame 18, and the left end of the engaging piece 34 protruding from the outer surface of the left upper frame 7 is bent upward to form the left upper frame. 7 is superposed on the lower part of the outer surface.

That is, the right upper frame 6 and the left upper frame 7
As shown in FIGS. 1 and 2, are connected vertically to the left end of the horizontal plate portion 12 of the right lower frame 11 and to the right end of the horizontal plate portion 19 of the left lower frame 18, respectively, and set up vertically, facing each other. It is in parallel at a predetermined interval.

In this example, when assembling the frame,
As shown in FIG. 1, long continuous rebars 1 and 2 having an inverted T-shape in longitudinal section are arranged on the ground surface, and a lower right frame 11 and a lower left frame 18 are surrounded by a horizontal lower part 1 of the rebar. Assembling on the surface of the ground, surrounding the vertical upper part 2 of the reinforcing bar, assembling the right upper form 6 and the left upper form 7 on the right lower form 11 and the left lower form 18.

After the assembling of the formwork, the concrete is poured from between the upper ends of the right upper formwork 6 and the left upper formwork 7, between the right lower formwork 11 and the left lower formwork 18, and between the right upper formwork 6 and the lefthand form. It is poured between the upper frame 7.

Then, between the lower right frame 11 and the lower left frame 18, a horizontal lower part 1 of the reinforcing bar, a horizontal lower part 5 of the cloth foundation in which the right side column 25, the left side column 26 and the horizontal bar 32 are buried are formed. At the same time, between the right upper frame 6 and the left upper frame 7, the vertical upper part 8 of the cloth foundation in which the vertical upper part 2 of the reinforcing bar is buried is formed.

After hardening of the concrete, the bent right end of the engagement piece 34 overlapped with the lower outer surface of the right upper frame 6 and the bent left end of the engagement piece 34 overlapped with the lower outer surface of the left upper frame 7 Are returned horizontally, and the right upper frame 6 and the left upper frame 7 are removed. A cloth foundation having an inverted T-shaped vertical cross-section in which the horizontal lower part 5 and the vertical upper part 8 are integrated is obtained. The lower right frame 11 and the lower left frame 18 are disposable. As the right upper frame 6 and the left upper frame 7, conventional products are used as they are.

In this example, since the horizontal lower part 5 and the vertical upper part 8 of the cloth foundation are simultaneously molded by pouring the concrete once, the time and effort required for preparing the fresh concrete are only once, and the manufacturing period is short. Become. Fabric foundations 5 and 8 made of reinforced concrete are efficiently manufactured.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a concrete formwork of a cloth foundation according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is an exploded perspective view of a lower right frame and a lower left frame of the concrete frame of the cloth foundation of the same example.

FIG. 4 is a vertical cross-sectional front view of a first step in a conventional case of manufacturing a cloth foundation.

FIG. 5 is a vertical cross-sectional front view of a second step of manufacturing a cloth foundation according to the related art.

[Explanation of symbols]

 5 Horizontal lower part of cloth foundation 6 Right upper frame 7 Left upper frame 8 Vertical upper part of cloth foundation 11 Right lower frame 12 Horizontal plate part of right lower frame 13 Vertical plate part of right lower frame 18 Left lower frame 19 Horizontal plate part of lower left frame 20 Vertical plate part of left lower frame 25 Right column 26 Left column

Claims (1)

[Claims] 1. A frame for molding a cloth foundation having an inverted T-shaped vertical cross-section having a vertical upper portion on a horizontal lower portion with concrete, which is a horizontal plate for molding the right side portion of the upper surface of the horizontal lower portion of the cloth foundation. Section and a vertical plate section that forms the right side of the horizontal lower part of the cloth foundation are installed ┓
The lower right frame of the vertical cross section, the right column that holds the height of the horizontal plate of the lower right frame, the horizontal plate of the horizontal lower part of the horizontal bottom of the cloth foundation and the horizontal lower part of the cloth foundation ┏ with a vertical plate to form the left side
Vertical bottom of the cloth foundation established by connecting the left lower formwork of the vertical section shape, the left side column that holds the height of the horizontal plate part of the left lower formwork, and the left end of the horizontal plate part of the right lower formwork A flat plate-shaped upper right frame for molding the right side of the upper part, and a flat plate-shaped upper left frame for connecting to the right end of the horizontal plate part of the left lower frame to form the left side of the vertical upper part of the cloth foundation. A concrete formwork of a cloth foundation characterized by having.