JPH0236845Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention (industrial application field) This invention relates to a formwork structure for forming independent foundation concrete for houses, etc.

(Prior Art) In general, in the case of independent foundation concrete for houses, etc., the size of the base concrete changes depending on the load or the bearing capacity of the ground. Conventionally, in order to accommodate changes in the length of one side of the base concrete, the base formwork was constructed by assembling a pair of formwork plates so that they could expand and contract, and the four base formworks were formed into a rectangular ring shape. There is known a formwork structure in which an upright formwork is supported by a mounting table made of a partition plate or a reinforcing bar, and the mounting table is placed therein.

(Problem to be solved by the invention) However, in the above-mentioned conventional configuration, after the pair of formwork plates of each base formwork are assembled to each other,
In addition to this, it is necessary to assemble the above-mentioned mounting table to the base formwork in a separate work, which not only increases the number of man-hours and complicates the overall assembly work, but also makes it difficult to align the mounting table with respect to the base formwork. There was a problem with becoming.

Structure of the invention (Means for solving the problem) This invention was made by focusing on the problems mentioned above.
The base formwork is constructed by assembling a pair of formwork plates with multiple through holes in the longitudinal direction on both the upper and lower sides so that they can expand and contract in the longitudinal direction, and the four base formworks are attached to the base of the independent foundation concrete. A pair of support rods with a plurality of through holes in the longitudinal direction are installed almost parallel to each other between the upper sides of a pair of opposing base formworks. The support rod and each formwork plate of both base formworks are connected in a relatively immovable manner by inserting a pin from above through any corresponding through hole at the overlapping part thereof,
Upright formwork for forming the upright part of the independent foundation concrete is placed on both support rods.

(Function) Therefore, in the independent foundation concrete molding formwork structure of this invention, the length of the base formwork 1 can be adjusted according to the size of the base concrete by adjusting the expansion and contraction of the pair of formwork plates 2 and 3. The formwork plates 2 and 3 of the pair of opposing base formworks 1 and the pair of support rods 18 are easily adjusted by the pins 20 inserted through their through holes 6 and 19. It can be easily and reliably assembled, and the upright formwork 22 is stably held in an accurate position on both support rods 18.

(Example) Hereinafter, an example in which this invention is embodied in a formwork structure for molding independent foundation concrete for residential buildings will be described with reference to the drawings.

As shown in Figures 1 and 2, four base forms 1 are placed at positions corresponding to the base of the foundation concrete.
are arranged in a square ring. Each base formwork 1 is made up of a pair of metal formwork plates 2 and 3 and assembled together so that they can expand and contract in the longitudinal direction, and both formwork plates 2,
U-shaped bent portions 4 and 5 are formed on both upper and lower sides of 3, and each bent portion 4 and 5 has a plurality of through holes 6 arranged in a row at predetermined intervals in the longitudinal direction. ing. On the back surface of one end of the outer form board 2 and the back surface of the center part of the inner form board 3, there are bent portions 4 and 5 on both sides.
Reinforcing rods 7 are fixed to extend vertically between the two.

One end surface of the outer form plate 2 forms an opening 8 into which the inner form plate 3 is inserted, and a connecting angle 10 having an insertion hole 9 in the center is fixed to the other end surface. A face plate 11 is fixed to one end surface of the inner form plate 3 facing the opening 8, and a connecting square pipe 12 is fixed to the other end surface. A support plate 13 is provided on the back surface of the form plate 3 on the inner side close to the connection square pipe 12, and insertion holes 14 are provided in transparent holes facing the support plate 13 and the connection square pipe 12, respectively. Connecting pin 1 with clamping part 15
6 is installed. And the connecting square pipe 12
The outer formwork 2 of the other base formwork 1 on the outer surface of
When the connecting angles 10 are connected, the connecting angle pipes 12 and the connecting angles 10 are connected to each other by the clamping portions 15 of the connecting pins 16.

As shown in FIG. 1, a pair of support rods 18 made of angle members are installed in parallel at a predetermined distance between the upper surfaces of a pair of opposing base forms 1. A plurality of through holes 19 are arranged in a row at equal intervals in the longitudinal direction of each support rod 18, and any through hole 19
is adapted to match any through hole 6 in the formwork plates 2, 3 at the overlapping portion of the support rod 18 and each of the formwork plates 2, 3. A pin 20 is inserted from above into each through hole 6, 19, and by driving the lower end into the ground, both ends of both support rods 18 are fixed against a pair of opposing base formworks 1. While each is held in position, each of the formwork plates 2 and 3 of both base formworks 1 is connected in a pre-adjusted expansion/contraction position so as to be immovable relative to each other.

Upright formwork 22 for forming the upright portion of the independent foundation concrete is placed upright on both support rods 18. This upright formwork 22 is constructed into a rectangular tube shape by combining a pair of metal formwork pieces 23 having an L-shape in plan view as shown in FIG. Each formwork piece 23 has a molding plate 24 bent into an L shape, with bent parts 4 and 5 on both upper and lower edges, a connecting angle 10 on one end edge, and a connecting angle 10 on the other end edge. The connecting square pipe 12 is
Further, a reinforcing rod 7 and a support plate 13 are respectively fixed to the back surface thereof. The connecting pins 16 are attached to the insertion holes 14 formed at the upper, middle and lower parts of the support plate 13 and the connecting square pipe 12, respectively, and the pair of formwork pieces 23 are assembled with each other by each connecting pin 16. It is designed to be retained. A pair of regulating pieces 25 made of angle material are fixed to the center of each of the support rods 18 at a distance corresponding to the dimension between both outer surfaces of the upright formwork 22. The position of each formwork piece 23 on the top is determined.

A holding plate 26 for holding an anchor bolt is removably supported between the upper surfaces of both formwork pieces 23. As shown in FIG. 4, this holding plate 26 is formed by bending a metal plate, and a pair of mounting portions 27 placed on the upper side of the form piece 23 are provided with the upper side of the form piece 23. A positioning pin 29 that is inserted into a locking hole 28 transparently provided in the curved portion 4 is fixed, and a retaining hole 30 through which the anchor bolt is inserted is transparently provided in the center of the retaining plate 26.

Next, a method of assembling each formwork constructed as described above will be explained based on FIG. 1. First, the base formwork 1 is assembled by assembling both the inner and outer formwork plates 3 and 2 in a superimposed state.
The through holes 6 are made to match each other by adjusting the expansion and contraction of both formwork plates 2 and 3 so that their length matches the length of one side of the base concrete. Four base formworks 1, assembled and adjusted in the same manner, are placed at positions corresponding to each side of the base concrete, and assembled into a square ring shape using the connecting pins 16.

Next, a pair of support rods 18 are installed in parallel between the upper surfaces of a pair of opposing base forms 1, and their through holes 19 are aligned with the through holes 6 of the form plates 2 and 3. In this state, pin 20 is inserted into each through hole 6, 19.
Insert it from above, drive its lower end into the ground,
The support rod 18 and formwork plates 2 and 3 are assembled immovably. In this way, the support rod 18 and the formwork plates 2 and 3 can be easily and reliably assembled using only the pins 20.

Next, the pair of formwork pieces 23 are attached to the connecting pins 16 in advance.
are assembled to each other to form an upright formwork 22,
This upright formwork 22 is placed on both support rods 18 and positioned by each regulating piece 25. In this way, the support rod 18 is reliably held at an accurate position relative to the base formwork 1, so that the upright formwork 22 can be supported in a stable state. Then, after attaching the retaining plate 26 to the upper surface of the upright formwork 22 so that the anchor vault can be inserted therethrough, concrete is poured into the base formwork 1 and the upright formwork 2.
By pouring the concrete into each of the two, independent foundation concrete for residential buildings can be formed easily and in a short time with accurate dimensions and shapes.

Note that this invention is not limited to the configuration of the embodiment described above, and various parts may be modified without departing from the spirit of this invention, for example, the upright formwork 22 may be constructed of four flat formworks. It is also possible to change the structure and shape arbitrarily and embody it.

Effects of the invention As detailed above, according to this invention, a pair of formwork plates that allow the length of the base formwork to be adjusted and a pair of support rods that support the upright formwork are connected to each other through their through-holes. This has the excellent effect that they can be easily and reliably assembled and held together by the pins inserted through the pins.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing a formwork structure for independent foundation concrete molding in one embodiment embodying this idea, Figure 2 is an exploded perspective view of the base formwork, and Figure 3 is the formwork of the upright formwork. FIG. 4 is a partially cutaway perspective view showing the retaining plate. Base formwork 1, formwork plates 2 and 3, through holes 6, support rods 18, throughholes 19, pins 20, upright formwork 22, formwork pieces 23, and retaining plates 26.

Claims (1)

[Scope of utility model registration request] A pair of formwork plates 2 and 3 each having a plurality of through holes 6 in the longitudinal direction on both upper and lower sides are assembled so as to be expandable and retractable in the longitudinal direction to constitute the base formwork 1, and the four base formworks 1 are A pair of support rods are arranged in a rectangular ring shape in plan according to the shape of the base of the independent foundation concrete, and between the upper sides of the pair of opposing base formworks 1 are provided with a plurality of through holes 19 in the longitudinal direction. 18 are erected almost in parallel, both support rods 18 and both base formworks 1
The formwork plates 2 and 3 are connected in a relatively immovable manner by inserting a pin 20 from above through the corresponding through holes 6 and 19 at their overlapping parts, and This is a formwork structure for forming independent foundation concrete, characterized in that an upright formwork 22 for forming an upright portion of independent foundation concrete is arranged upright.