JPS6347244Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a large unit formwork with excellent workability.

As shown in Figures 1 and 2, conventional concrete wall pouring method (Jikko Sho 51
(Refer to Publication No. 42665), six formworks d to i are used to construct a large section, which requires a large number of man-hours, and the scaffolding j for the work is narrow and there is a handrail for protection. There were restrictions on the ability to work freely, and work safety was lacking in some areas.

The purpose of this invention is to eliminate the above-mentioned drawbacks, reduce the number of formwork divisions, reduce the number of man-hours for formwork work, and provide a large unit formwork that improves workability and allows safe work. That is.

The structure of this invention is that the formwork is arranged in a U-shape, the lower part of the formwork is connected to the corner part of the formwork with a screw jack, and the outer end of the formwork is connected to a support rod via a screw jack. The upper part consists of a large unit formwork connected to vertical and horizontal beams through screws, with the tops of these beams forming the floor surface.

Hereinafter, embodiments of this invention will be described based on the drawings.

In Fig. 3, 1 is a channel shaped steel with a large number of edged holes 2. Two of these are placed back to back to form a formwork beam 3, and a panel 4 is attached to the front side and connected with a cross member 5 to form the formwork. 6. 7 is a tie bolt that maintains the distance between both formworks,
This is to conclude these.

Figure 4 shows the construction of a large section of concrete wall, in which unit forms 8 and 8, in which formwork 6 is integrated into a U-shape by means of auxiliary formwork 6', are installed facing each other. There is. As shown in the left half of FIG. 4, the opposing formworks 9, 9 of the U-shaped unit formwork 8 and the formwork 10 between them are diagonally connected with screw jacks 11, and the formwork 9 and the other end of the formwork 9 are supported by a support rod 12 via screws 13, and by loosening the screws 11, 13, the forms 9, 9 and the formwork 10 are separated, and the formwork 10 is removed. It is now possible to remove the mold from the concrete that has been installed. In addition, the upper part of the U-shaped unit formwork 8 is connected to the mounting bracket 15 attached to the lower surface of the beam material 14 and the formwork beam 3, as shown in FIG. The attached connecting hardware 16 is connected with a screw jack 17, and a pin 19 provided on the protrusion at the tip of the beam 14 is inserted into the elongated hole 18 of the connecting hardware 16, and the elongated hole 18 is expanded and contracted by the screw jack 17. It is designed to advance and retreat inside. And formwork 10
are similarly connected by a screw jack 21 between the mounting bracket 15 on the lower surface of the beam material 20 and the connecting hardware 16, and by loosening the screw jacks 17 and 21, the formwork 9 is attached to the lower jacks 11 and 13. , 9 and 10 can be released from the cast concrete and removed from the mold. Corrugated iron plates 2 are placed on the vertical and horizontal beams 14 and 20.
2 is used as a tension work floor. Inspection holes 23 provided at appropriate locations on the corrugated iron plate 22 are covered with wire mesh.

In order to erect this large unit formwork, 63 formworks of the required dimensions are formed into a U-shape, and the lower part is screwed into screw jacks 11 provided at the corners of the formworks 9, 9 and 10. 11, and the support rods 12 at the ends of the formworks 9, 9 with the screw jacks 13. At the same time, the beams 14, 20 with protruding upper parts are attached to the formworks 9, 9 through the screw jacks 17, 21. and formwork 10
The unit formwork 8 is formed by adjusting the screws 17 and 21, and the unit formwork 8 thus formed is placed facing each other to complete the framework for one section. The corrugated iron plate 22 may be stretched over the area.

Next, in order to remove the formwork after the concrete has hardened after pouring the concrete, loosen the screws 17 and 20 at the top to separate the tops of the formworks 9, 9, and 10 from the concrete, and then Loosen the screws 11 and 13 and remove the formwork 9, 9, 10.
Separate the lower part of the concrete from the concrete. In this case, the screw jacks 11 are connected obliquely to the corners of the formwork 9 and the formwork 10, and no beams are used, so the beams do not interfere with floor work. , 3 by two screw jacks 11, 11.
The formworks 9, 9, 10 can be separated from the concrete at the same time.

Since this invention has the above-mentioned configuration, it is possible to
Since the wall of one section that requires one unit formwork can be formed using two unit formworks, the number of parts can be reduced to 1/3, and the number of man-hours required for formwork work can therefore be reduced. This can be significantly reduced. Further, since the demolding and erection of the formwork are performed by operating screws, construction is easy, and it is possible to significantly save labor in the formwork work. Furthermore, since beams are attached vertically and horizontally to the top of the formwork to form an integral floor surface, a wide area of work floor can be obtained, so unlike the conventional work using handrails and scaffolding frames, work is not obstructed. Since the work can be done freely without any problems, the work efficiency is improved and the work is safe and there is no danger.

In addition, in the example, the floor on the beam material is a corrugated iron plate, so it is lightweight and easy to handle, and
Inspection openings placed at appropriate locations are lined with wire mesh to allow light to pass through, making it easy to work inside without getting dark.

[Brief explanation of the drawing]

Figures 1 and 2 show the state of construction of a conventionally known formwork; Figure 1 is a plan view excluding the scaffolding and handrails, Figure 2 is a front view cut along the - line in Figure 1; Figures 3 to 6 show an embodiment of this invention; Figure 3 is an enlarged front view of a part of the formwork, Figure 4 is a plan view, and the left half is a view seen downward; The right half is a view seen from above, FIG. 5 is a side view cut along the - line in FIG. 4, and FIG. 6 is an enlarged side view of the upper end of the formwork. 1...Channel shaped steel, 3...Form beam, 4
... Panel, 5 ... Horizontal material, 9 ... Formwork, 10 ...
Formwork, 11...screws, 12...support rods,
13...Screw jack, 14...Beam material, 17...
...screw jack, 20...beam material, 21...screw jack, 22...corrugated iron plate.

Claims (1)

[Claims for Utility Model Registration] 1. The formworks 9, 9, 10 are arranged in a U-shape, and the corners of the formworks 9, 9 and 10 are connected with screws 11, 11 at the bottom, The outer ends of the frames 9, 9 are connected with a support rod 12 via a screw jack 13, and the upper part of the frame 9, 9 is connected with a support rod 12 via a screw jack 13.
A large unit is constructed in which the formwork 10 is connected to the beam 14 via screws 7 and 17, and the formwork 10 is connected to the beam 20 via screws 21 and 21, so that the vertical and horizontal beams 14 and the top of the beam 20 form a floor surface. Formwork. 2 Utility model registration claim 1 in which a corrugated iron plate 22 is stretched over the vertical and horizontal beams 14 and beams 20
Large unit formwork described in section.