JP2002146805A - Form support fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form support fitting capable of reducing the interference with a horizontal reinforcement and the inexpensive and light-weight form support fitting capable of being handled easily. SOLUTION: This portal form support fitting 1 composed of leg parts 16 on both sides and a form receive part 15 is constituted such that a height of the form receive part 15 is set to be substantially equal to a top face of a mat foundation, a central part of the form receive part 15 is formed into a projecting shape, and a horizontal reinforcement avoid part 14 whose lower part is opened is provided. The leg parts 16 and the form receive part 15 may be integrally formed by bending a steel bar.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support fitting used to support a formwork when constructing a foundation for a house, and to a type which is buried in cast concrete.

[0002]

2. Description of the Related Art As a foundation of a house, a one-piece moisture-proof foundation for simultaneously constructing a solid foundation and a cloth foundation (both made of concrete) for the purpose of moisture-proofing under the floor has become widespread. To cast a one-piece moisture-proof foundation, perform a flat excavation on the land according to the placement of the foundation, spread the stone around the bottom and harden it, and then place the solid foundation and cloth foundation rebar on it Then, the formwork is arranged and fixed in such a manner that the reinforcing steel for fabric foundation is sandwiched from both sides, and concrete is poured between the formwork. At this time, in order to place the cloth foundation and the solid foundation at the same time, the formwork for the cloth foundation is lifted up from the bottom of the excavation hardened with the stone by the thickness of the solid foundation, and this state is maintained. It is necessary to cast concrete between frames.

[0003] When concrete is poured between the formwork, the concrete falls out of the form gap with the bottom removed to a portion corresponding to the solid foundation at first, but eventually rises, and after reaching the bottom of the form form, the cloth is removed. Fill the foundation. In this way, concrete is cast on the four-part cloth foundation, and then concrete is cast on the solid foundation to a predetermined thickness. Then, after the concrete has hardened, the formwork for the cloth foundation is removed to complete the house foundation.

A concrete block or the like has been used to lift a formwork for a cloth foundation by the thickness of a solid foundation. However, recently, since it is heavy and difficult to handle and difficult to position and adjust the height of the formwork, it has recently been simple. In many cases, a form-supporting metal fitting that can be used is used. In addition, since such concrete blocks and support fittings are generally embedded in completed basic concrete, there is no need to collect and reuse them.

[0005] Japanese Patent Application Laid-Open No. 11-350 discloses a form support bracket.
As disclosed in Japanese Patent No. 733, a steel plate is formed by pressing, and is formed in a gate-shape in which support legs on both sides and the tops of the support legs are connected by form receiving portions. But,
It is relatively expensive as a metal fitting to be embedded in the foundation concrete, and since it is a pressed product of a steel sheet, it is inevitably wide and thick, so that it tends to be heavy and bulky.

[0006] Further, since the support legs and the tops of the support legs are connected by the linear form receiving portions, the horizontal streaks are arranged horizontally in accordance with the arrangement of reinforcing bars corresponding to the height of the cloth foundation and the strength of the foundation. May be just the position of the form receiving part, and the form receiving part may interfere with the horizontal streaks and the support fitting may not be able to be arranged at a predetermined position.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a formwork support fitting with little interference with a horizontal streak, and a lightweight, easy-to-handle and inexpensive formwork support fitting.

[0008]

SUMMARY OF THE INVENTION A gate-shaped form-mounting support, wherein the center of a form-receiving portion formed by connecting the legs on both sides and the tops of the legs is formed in a convex shape and the lower part is opened. A horizontal streak avoidance section is provided. The leg and the form receiving part are formed integrally by bending a steel rod,
Form support brackets may be made lighter and cheaper. In addition, the legs may allow for height adjustment.

[0009]

1 and 2 show a form support bracket 1 comprising a movable part 2 formed of a φ6 steel rod and a support part 3 for supporting the movable part 2. FIG. The movable portion 2 is an L-shaped bent member 6a composed of a horizontal portion 4a and a vertical portion 5a, and an L-shaped bent member 6b similarly composed of a horizontal portion 4b and a vertical portion 5b. The coupling member 7 is located at the center, and the convex portion 7a is
4b, and L-shaped bending members 6a, 6
b is symmetrically combined and welded.

The support portion 3 is composed of left and right supports 8a and 8b, and both the supports 8a and 8b are centered on a leg plate 9 which is a rectangular flat plate (60 mm × 80 mm) arranged horizontally as shown in FIG. The base of the adjustment bolt 10 is rotatably mounted on the guide cylinder 11 and the guide cylinder 11 is opened in parallel with the base.
Is fixed, and a nut 12 is
Is screwed.

The horizontal portions 4a and 4b of the L-shaped bent members 6a and 6b fixed to both sides of the connecting member 7 are portions for receiving the mold frames 13 and 13 (FIG. 4), and the connecting member 7 and the L-shaped bent members 6a and The horizontal portions 4a and 4b of 6b constitute a form receiving portion 15 provided with a horizontal streak avoiding portion 14 whose central portion is formed in a convex shape and whose lower side is opened.

The vertical portions 5a and 5b of the L-shaped bending members 6a and 6b fixed to both sides of the connecting member 7 are supported by supporting members 8a and 8b.
The lower end is vertically movably inserted into the guide cylinders 11 and 11 and the nut 12 screwed to the adjustment bolt 10 is connected to the vertical part 5a.
5b is welded to the middle part. That is, the vertical portions 5a, 5b of the L-shaped bending members 6a, 6b and the supports 8a, 8b
Constitutes a leg 16 of the form support bracket 1, and the form support bracket 1 extends between the tops of the legs 16 on both sides and the form receiving portion 1.
5, the entire structure is a gate-shaped structure.

In this embodiment, the height of the frame support 1 to the frame receiving portions 4a and 4b is 180 mm,
The height of a is 60 mm, and the distance between the vertical parts 5a and 5b is about 3
It is formed as 00 mm. When the adjustment bolt 10 is rotated, the nut 12 moves up and down, and the movable section 2 moves up and down to adjust the position of the form receiving section 15. The inclination of the form receiving portion 15 can be adjusted to some extent by changing the amount of rotation of the left and right adjustment bolts 10.

Construction of a foundation using the formwork support fitting 1 is carried out as follows. First, the solid foundation reinforcing bar 17 and the cloth foundation reinforcing bars 18a and 18b are arranged on the bottom of the excavated portion which is hardened with the stone according to the arrangement of the foundation (FIG. 3). Each of the reinforcing bars 18a and 18b for fabric foundation has an upper horizontal line 19a, an intermediate horizontal line 19b, and a vertical line 20 arranged at a fixed interval with a lower horizontal line 19c attached to a lattice.
The portion where the characters are connected is shown. The intermediate horizontal streak 18a is usually a single line (point A in FIG. 3) and is located at a position slightly lower than the thickness dimension of the solid foundation. At the position of the intermediate horizontal bar 19b, two reinforcing bars are vertically
There are three overlapping parts.

Next, the form supports 1 are arranged at intervals of about 90 cm, and the forms 13, 13 are sandwiched between the reinforcing bars 18a, 18b for the cloth foundation from both sides.
5 (FIG. 4), and fixed using a form hanging device (not shown). The molds 13 and 13 are higher than the bottom on which the cobblestone is laid by the thickness of the solid foundation, and are maintained in a state of being lifted from the bottom.

The form support bracket 1 is inserted from between the upper horizontal line 19a and the intermediate horizontal line 19b so as to straddle the intermediate horizontal line 19b, and the direction connecting the form receiving parts 15 on both sides is orthogonal to the direction of the horizontal line 18b. To be placed. At this time, even when the intermediate transverse bar 18a has a single location (the location A in FIG. 3) and the intermediate transverse bar 18b has two or three reinforcing bars (horizontal bars), these reinforcing bars are connected to each other by the connecting member. The form support metal fitting 1 can be disposed without any trouble by being fitted into the convex reinforcing bar avoiding portion 14 of FIG. When the form support bracket 1 is inclined, the adjustment bolt 10 of the support section 3 is turned to maintain the form receiving sections 5, 15 horizontal.

Concrete is cast between the form frames 13 for fabric foundation, and then concrete is cast on the solid foundation. In FIG. 5, reference numeral 22 denotes an anchor bolt and a jig for positioning the anchor bolt. The anchor bolt is used to bind the base 23 placed on the cloth foundation to the foundation. After the concrete has hardened, the frames 13, 13 are removed and the foundation of the house is completed. The form support fitting 1 is embedded in the foundation. However, most of the volume occupied in the foundation by the formwork bracket 1 is made of a steel rod of φ6 mm, and there is no possibility of dividing the foundation or causing cracks.

The above is one embodiment, and various dimensions and intervals are adopted depending on the scale and form of the foundation. The arrangement of the reinforcing bars shown in FIG. 3 is a simple example excluding the reinforcing bars that are unnecessary for the description.

[0019]

According to the first aspect of the present invention, the central portion of the form receiving portion of the form supporting metal is formed in a convex shape, and the horizontal streak avoiding portion having an open lower portion is provided. Foundation,
In the construction of the foundation of the cloth foundation, the form support metal can be arranged without hindrance even at the place where the horizontal streaks overlap vertically. According to the configuration of the second aspect, since the form receiving portion is formed by bending a steel rod, it can be provided at low cost while being light in weight and with less labor for molding. According to the configuration of the third aspect, the height of the form receiving portion can be adjusted in accordance with the designed thickness of the solid foundation, and the adjustment is performed when the form receiving portion is inclined left and right. Therefore, it is highly versatile as a formwork bracket.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the entire form support bracket.

FIG. 2 is a front view of a form support bracket.

FIG. 3 is a perspective view showing a state of bar arrangement.

FIG. 4 is a layout diagram of a cross section showing a state where the formwork is placed.

FIG. 5 is a perspective view schematically showing a state where concrete is cast.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Form support metal fitting 2 Movable part 3 Support part 4a, 4b Horizontal part 5a, 5b Vertical part 6a, 6b L-shaped bending member 7 Connecting member 7a Convex part 8a, 8b Support body 9 Leg plate 10 Adjustment bolt 11 Guide cylinder 12 Nut DESCRIPTION OF SYMBOLS 13 Form frame 14 Horizontal streak avoiding part 15 Form stud receiving part 16 Leg part 17 Reinforcing bar for solid foundation 18 Reinforcing bar for fabric foundation 19a Upper horizontal bar 19b Intermediate horizontal bar 19c Lower horizontal bar 20 Vertical bar 21 Auxiliary bar 22 Anchor bolt and jig 23 Base

Claims (3)

[Claims] 1. A form which is generally formed as a portal with a pair of legs arranged at intervals on both sides and a form receiving portion joined between the tops of the legs, and the height of the form receiving portion is set to a solid foundation. A mold supporting portion, which is substantially equal to the top surface of the mold, has a central portion of the mold receiving portion formed in a convex shape, and provided with a horizontal streak avoiding portion which is opened downward. 2. The mold supporting bracket according to claim 1, wherein the leg and the form receiving portion are formed integrally by bending a steel bar. 3. The formwork support bracket according to claim 1, wherein the height of the leg is adjustable.