JPS601461B2 - Flexible formwork device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a formwork device necessary for constructing concrete structures.

When constructing concrete structures, especially concrete structures whose main elements are columns, beams, floors, walls, etc.
A formwork is placed on the outside of the reinforcement structure using clamping hardware such as separators, concrete is poured into the formwork, and the formwork is removed after the concrete is set. ing.

In other words, formwork work is indispensable for the construction of concrete structures, but this requires many equipment such as formwork plates, separators, edge plates, and snap hardware, and the work is time-consuming. It was complicated and required a great deal of effort and expense. Therefore, the present invention is an attempt to improve such a secondary construction method, and it can be installed simply by attaching it to the vertical reinforcement of the reinforcement structure, and there is no need to remove it, making it easy to perform construction, and making it possible to easily construct complex curved surfaces. The object of this invention is to provide a flexible formwork device suitable for the construction of concrete structures.

Embodiments of the present invention will be described below with reference to the drawings.

The embodiment is mainly a formwork device suitable for a frame constructed on a ground, an existing structure, or an auxiliary structure, and includes a hoop reinforcement A to be engaged with a vertical reinforcement in a structure, and a hoop reinforcement A for the hoop reinforcement A. The main element is a wire mesh formwork plate B that is attached to the.

By the way, the hoop reinforcement A may be formed in a shape that matches the cross-sectional shape of the constructed structure, but in the illustrated example, the upper and lower pair of horizontal reinforcements 1 and 2 and the pair of connecting reinforcements 3 and 4 on the right side are They are arranged in a shape and fixed by welding or the like, and the upper and lower protruding ends of the connecting bars 3 and 4 are bent inward in a fishing shape 6, 6, and the tips are bent so as to roughly follow the machine bars 1 and 2. Vertical reinforcement engaging portions 7, 7 are formed between the honor curved portions 6, 6 and the horizontal reinforcements 1, 2 and are connected to the vertical reinforcements 5, 5, and the tips of the protruding portions on both sides of the upper horizontal reinforcement 1 are arranged upwardly. The tips of the protrusions on both sides of the lower transverse reinforcement 2 are bent downward, respectively, and a frame plate engaging portion 8 is provided in a hook shape 9 to form a hoop reinforcement A. The wire mesh form board B is formed by combining vertical lines 10 and horizontal lines 11 to form a mesh 12 of an appropriate size, but it is preferable that the mesh 12 be such that the poured concrete oozes out to some extent.

The mesh shape may be square or rectangular, and the wire mesh may be formed by braiding wire rods in a bypass shape. The above-mentioned wire mesh formwork plate B is attached to the hoop bars A. To do this, first, an appropriate number of hoop bars A are arranged at required intervals. The spacing and quantity are determined based on the size of the structure to be constructed and the length suitable for transportation. On the other hand, a mounting portion 13 for engaging with the frame plate engaging portion 8 of the hoop reinforcement A is formed on the wire mesh form plate B. The mounting part 13 has the simplest structure, as shown in FIG. 143, or twist the honor part 14 one more time to make a loop, and insert the hook 9 of the hoop muscle A into the loop and engage it. In addition, the other structure shown in Fig. 6 has mesh 1
2 is a wire mesh formwork board B formed into a rectangular shape that is long in the vertical direction.
As shown in the opening of FIG. is rotatably attached, and an engagement hole 17 is formed in the center of the glans plate 16.
The mounting bracket 18 is constructed by drilling the holes. Therefore, by inserting the glans plate 15 vertically into the mesh 12 of the wire mesh form plate B from the outside and then moving the glans plate 15 900 times, the glans plate 15 will be vertically aligned on both sides as shown in FIG. 6A. The attachment fittings 18 hooked onto the wires 10 are attached to the wire mesh to form the attachment portion 13 on the wire mesh formwork board B. Note that the mounting part 13 is the fifth part mentioned above.
In addition to those shown in Figures and Figure 6, wire mesh formwork board B
Attachment part 1 that can attach a separate wire rod spear to the vertical line 10 or horizontal line 11 of the frame plate and engage the fishing piece 9 of the hoop line A to the formwork plate B.
3 may be formed. Therefore, a wire mesh form plate B is placed on both sides of the hoop line A, and the fishing pieces 9 of the upper and lower frame plate engaging parts 8 of the hoop line A are engaged with the mounting parts 13 of the form plate B on both sides. A flexible formwork device is constructed by connecting several hoop bars A that are freely movable together and foldably connected to formwork plates B on both sides.

At this time, the end portion of the hook piece 9 protruding from the attachment portion 13 may be bent to form a ring shape that allows the frame plate engaging portion 8 to freely move around the attachment portion 13. The device of the present invention configured as described above has the following features:
The hoop bars A and the formwork plates B may be installed on site, but they are produced in a factory to a unit length suitable for transportation as shown in Fig. It is convenient to fold it up and transport it to the site, then open it and use it there.

For on-site construction, the device of the present invention is transported to the required location on the foundation ground C, etc., and after opening and installing it as shown in Figure 2, the vertical reinforcements 5, which will be the main reinforcements, are inserted into the hoop reinforcements A. Engagement part 7
By utilizing the elasticity of the curved portions 6 of the connecting bars 3 and 4, they are inserted and engaged, thereby holding the device of the present invention in an open, predetermined state as shown in FIG. In this case, if necessary, the engagement portion may be fixed by welding, wire connection, or the like. In addition to the vertical reinforcements 5, auxiliary reinforcements, other hoop reinforcements, etc. may be arranged as appropriate. Furthermore, as shown in Figure 8, the foundation ground C
An anchor bar 19 or the like for fixing the device of the present invention thereto may be appropriately provided. If the structure to be constructed is curved, it is possible to freely increase or decrease the distance between the attachment points of the formwork plates B and each hoop reinforcement A on the inside and outside of the curved part. Can make a bend.

On the other hand, U-shaped muscle D formed in a horizontal U-shape as shown in FIG.
can also be placed in place of a portion of the appropriate number of hoop muscles A described above. This U-shaped muscle D has the interval between the horizontal muscles 20, 20,
Screws 21 are installed at the ends of the horizontal reinforcements 20 at intervals such that they can contact the upper and lower surfaces of the vertical reinforcements 5, 5 engaged with the hoop reinforcement A, respectively. Therefore, the horizontal muscle 20,2 of this U-shaped muscle D
0 into the formwork board B on both sides from the 1 side, the horizontal strip 2
0 and 20 are in contact with the upper and lower surfaces of the vertical reinforcements 5 and 5, respectively, and the vertical reinforcements 5 are held alternately from above and below by these and the horizontal reinforcements 1 and 2, thereby making it possible to maintain a strong reinforcement structure. On the other hand, mesh 1 is formed on the protruding end screws 21 of the horizontal strips 20, 20 from the outside.
The U-shaped muscle D is attached by ironing the washer 22 to such an extent that it does not pass through the washer 2 and screwing the nut 23 together. In addition, when attaching the above-mentioned U-shaped strip D, the tips of the horizontal strips 20, 20 are bent and the bent pieces are hooked to the vertical lines 10 and horizontal lines 11 of the pond side form board B. You may use appropriate means, such as making it. Therefore, as shown in Fig. 8, when the apparatus of the present invention is used to arrange the required reinforcement such as the vertical reinforcement 5 and the fixing anchor reinforcement 19, and the installation is completed, concrete is poured between the formwork plates B and B on both sides. Perform 24 implants.

At this time, the relatively large bones in the concrete 24 cannot pass through the mesh 12 of the formwork plate B, so they remain within the formwork plates B, B, and the fine and fluid mortar portion 25 slightly passes through the formwork plate B. The mortar passes through the mesh 12 and leaks to the outside, and the outside of the form board B is covered with this leaked mortar portion 25. That is, the formwork board will be buried in the poured concrete. The surface finishing can be done as necessary, but while the mortar part 25 is not hardening, it can be finished with an appropriate tool such as a sakan trowel, and after it has hardened, the surface can be finished by further applying mortar. I can do it. In this way, construction of the required concrete structure is completed. As described above, the present invention arranges an appropriate number of hoop reinforcements with engagement parts with longitudinal reinforcements, which are the main load-bearing members of concrete structures, at required intervals, and connects both ends of the hoop reinforcements to both sides. Since the flexible formwork device is constructed by attaching the wire mesh formwork plate in a foldable manner, it is no longer necessary to assemble the formwork using many pieces of equipment such as formwork plates, separators, end pieces, and snap metal fittings, as in conventional concrete construction. The labor and cost required for this can be reduced, and since the formwork plates are made of wire mesh, they can be bent freely. Therefore, the formwork equipment can be configured to suit the construction of concrete structures with many curved surfaces. This can be done extremely easily. Moreover, the highly fluid mortar of the poured concrete leaks out of the wire mesh formwork plates and covers them, so the formwork plates become buried and need to be removed. Therefore, the labor and expense required for removing the formwork plates as in the conventional method can be saved, and work efficiency is improved.

In addition, since mortar leaks onto the outside surface of the formwork plate and covers the formwork plate, exterior finishing can be done easily and well, and since the formwork plate is buried in concrete, the concrete The strength of the structure is also improved, and even if the surface of the constructed structure is damaged due to weathering or the like, it can be easily repaired because the formwork board serves as the base. Furthermore, in the device of the present invention, since the frame plate engaging portions at both ends of the hoop wire are foldably attached to the wire mesh formwork plates on both sides, assembly on site is not only extremely simple and quick, but also the formwork device can be easily and quickly assembled. It is also possible to produce the units as units in a factory, fold them, transport them to the site, open them at the site, and add them as necessary. It has extremely convenient and practically beneficial effects.

In addition, a U-shaped strip formed in a horizontal U-shape is placed in place of one hoop strip, and its upper and lower transverse strips are inserted into the formwork boards on both sides from the 1st side, and the tips are attached to the pond side formwork board. If used in this way, the vertical muscles will be alternately held between the upper and lower muscles by the vertical muscles and the horizontal muscles of the hoop muscles, which will have the practical benefit of maintaining the strong muscle structure.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a flexible formwork device in an assembled state showing one embodiment of the present invention, FIG. 2 is a plan view of the same flexible formwork device, and FIG. 3 is a plan view showing its folded state. , Fig. 4 is a front sectional view, Fig. 6 is an enlarged slope view of the above frame plate engaging part, and Fig. 6 is a slope view of another embodiment of the frame plate engaging part. The mounting brackets are shown respectively. FIG. 7 is a front sectional view showing a state in which U-shaped reinforcements are attached, and FIG. 8 is a front sectional view showing a state in which a concrete IJ structure is constructed using the same flexible formwork apparatus. A... Hoop bar, B... Wire mesh formwork board, D... U-shaped bar, 7... Vertical bar engaging portion, 8... ... Frame plate engagement part, 9... Piece shape. Figure 1 Figure 2 Figure 3. Figure 4 Figure 5 Figure 6 Figure 7 Figure 8

Claims (1)

[Scope of Claims] 1. An appropriate number of hoop reinforcements are provided at required intervals, with vertical reinforcement engagement portions provided at required locations, and frame plate engagement portions with protruding ends bent into hook shapes on both sides. A flexible formwork device characterized in that the frame plate engaging portions on both sides of the hoop bars are foldably attached to the wire mesh formwork plates on both sides. 2. Vertical strip engagement portions are provided at required locations, and an appropriate number of hoop stripes are provided on both sides with protruding frame plate engagement portions whose tips are bent into a hook shape, and a horizontal U-shape is formed. A suitable number of U-shaped bars inserted from the outside of the side wire mesh formwork plates are arranged at required intervals, and the frame plate engaging parts on both sides of the hoop bars are inserted into the wire mesh formwork plates on both sides. , a flexible formwork device characterized in that the tips of the U-shaped striations are foldably attached to a wire mesh formwork plate at the other end.