JPS6221101B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an iron plate form construction method for floor slab construction of buildings and structures.

Conventionally, plywood boards of about 12m/m are used as slab and beam formwork for floor slab construction of buildings and structures, width stops are tightened with separators, and shoring is done using large pipe supports. use,
We have created floor slab forms that can withstand the weight, including the dynamic loads associated with pouring concrete, and concrete is poured for each floor.

For this reason, conventionally, it was necessary to create a slab formwork for each floor after concrete was poured, and all of the work was done on-site, making the work specialized, lengthening the construction period, and requiring the time and effort of dismantling the formwork. There were also problems such as the need for

This invention was made to solve the above-mentioned conventional problems.By supporting a support beam on a steel frame and supporting slab formwork and beam formwork made of steel plates on this support beam, each floor can be It is possible to construct the floor slab formwork at the same time, simplifying the work, shortening the construction period, and improving quality.
Moreover, the purpose is to provide a steel plate formwork construction method that does not require dismantling the formwork.

This invention suspends a plurality of support beams between steel frames at intervals, supports slab formwork on the support beams, and has an approximately U-shaped cross section in the interval formed between the support beams, and an opening at the upper end of the support beam. A beam formwork made of a steel plate having side edges extending from the side to both sides is dropped in, and the side edges of the support beam formwork are tightened with fasteners by the support beams through the slab formwork by the side edges, and the beam This is an iron plate formwork construction method characterized by supporting the bottom of the formwork with temporary supports.

The present invention will be explained below with reference to illustrated embodiments.
Fig. 1 is a horizontal sectional view of the floor slab of the building in the example, Fig. 2 is an A-A sectional view, Fig. 3 is a B-B sectional view, Fig. 4 is a C-C sectional view, and Fig. The figure is a front view showing the fastener, and FIG. 6 is a side view thereof.

The building 1 has side walls 2 and 3, and its floor slab portion is formed by a slab 4, a girder 5, and small beams 6 and 7. The construction method for such buildings is to first tighten the steel frame, then perform form work, reinforcing, and piping work.
Place concrete.

The steel plate formwork construction method of the present invention is used in the formwork work for floor slabs. First, after final tightening of the steel frames, the steel plates 8 and 9 of the side walls 3 and the girder 5 and the steel frames 9 of the girder 5 are spaced apart from each other to maintain the distance between them. A plurality of support beams 10 are suspended in parallel. It is desirable that the support beam 10 be lightweight, and in the embodiment a lattice-like ost beam is used, but there are no restrictions on the shape, structure, material, etc.
The spacing at which the support beams 10 are arranged is an interval R suitable for supporting the slab formwork 11 in a general non-beam forming area, but in the area where a small beam 6 is formed, the beam formwork 12 is dropped and the side edges are The distance S is set to be suitable for supporting the parts. The end portion 10a of the support beam 10 is fixed to the steel frames 8, 9 by suitable means such as welding.

After fixing the support beam 10, leave a gap S in the part where the small beam 6 will be formed, and drop the beam formwork 13 in the part where the small beam 7 will be formed, making it suitable for supporting the side edges. A slab formwork 11 made of iron plates is laid, leaving a gap T. As the slab formwork 11,
Although a keystone plate is used in the embodiment, there is no particular limitation on the material as long as it can withstand the load of the slab, such as other corrugated iron plates.

After laying the slab formwork 11, the beam formwork 12 for the small beam 6 is dropped in the interval S, and the beam form 13 for the small beam 7 is dropped in the interval T, and the upper side edges 12a and 13a are respectively placed. is supported on the slab formwork 11 and fixed by welding or the like. The beam formworks 12 and 13 are each made of an iron plate formed to have a substantially U-shaped cross section and side edges 12a and 13a extending from the upper end of the opening to both sides, and side surfaces extending downward from the side edges 12a and 13a. parts 12b, 13b and bottom part 12c,
13c. The beam forms 12 and 13 are connected by aligning flanges 14 and using bolts 15. A notch 13d is provided in advance at the intersection of the beam formwork 13 and the supporting beam 10, and after fitting, a cover plate 16 is applied to cover the notch 13d, and bolts 15 are tightened. The beam forms 12 or 13 can be connected by aligning their ends and connecting them with bolts 15, or by connecting them with a cover plate.

Reference numeral 17 denotes a beam formwork for the girder 5, which is separately created in the same manner as the conventional beam formwork, and is connected to the beam formwork 12 by bolts 19 via a flange 18, but the beam formwork 12, 13 It is also possible to have a similar configuration.

After laying the slab formwork 11 and beam forms 12 and 13, reinforcement work and piping work are performed. These works can be carried out simultaneously on each floor, regardless of concrete placement. Concrete pouring will be carried out sequentially from the lower floors, regardless of the floor slab form work on the upper floors.
In this case, after pouring concrete on the lower floor, the beam formwork 17 is created, and the bottom parts 12c, 13c of the beam formworks 12, 13 are supported by temporary supports 20 as shown in FIG. , and as shown in FIGS. 5 and 6, the fasteners 21 are attached to the beam forms 12 and 1.
Attach and tighten at appropriate intervals to the side parts 12b and 13b of No. 3, and then
This prevents bulges of 2b and 13b.

The fastener 21 is attached to the side surface 12 of the beam formwork 12, 13.
The other ends of frames 23 and 24 made of angle members that press inward the abutting portions 22 to b and 13b are connected to connecting members 25 by bolts 27 through adjustment bolt holes 26
is attached in a U-shape by frame 2.
3 and 24 are connected to the separator 3 via washers 28 and 29.
0 at a predetermined interval, and is locked to the support beam 10 by a locking member 31.

In the above, the support beam 10, the slab formwork 11,
The beam formwork 12, 13, fasteners 21, etc. can be manufactured in advance at the factory and cut to predetermined dimensions, and the formwork work for the floor slab can be easily carried out by simply assembling them on site. . After concrete is poured, the support beam 10, slab formwork 11, beam formwork 12, 13, etc. can be left as they are without being dismantled, and these have the function of maintaining strength as part of the frame. .

In the above description, the beam forms 12 and 13 are supported on the supporting beam 10 via the slab form 11, but they may be supported directly. Also, beam formwork 1
2 and 13 were used for the small beams 6 and 7, but they can also be used for the large beam 5 in small buildings.

As described above, according to the present invention, the support beam is supported on the steel frame, and the slab formwork and beam formwork made of steel plates are supported on the support beam, so that the following effects can be obtained.

Floor slab work can be done simultaneously on each floor.

A work floor can be secured early and safety is high.

Because slab formwork and beam formwork are constructed at the same time,
Post-process reinforcement, piping work, etc. can be done in advance.

Because the parts used can be manufactured in factories,
No on-site production is required.

It can save labor for carpenters and construction workers.

The work is simple and can be done even by non-specialists.

There is no need to dismantle the formwork, and there is no need to generate leftover materials, clean up,
Cleaning etc. can be omitted.

The frame construction period can be shortened, the quality of formwork work can be improved, and the quality of the frame can be ensured.

Because it is light in weight, it can be transported and installed by one person.

[Brief explanation of the drawing]

The drawings show examples, and Fig. 1 is a horizontal sectional view of the floor slab of the building, Fig. 2 is a sectional view taken along line A-A, and Fig. 3 is a horizontal sectional view of the floor slab of the building.
The figure is a BB sectional view, Figure 4 is a C-C sectional view, and
The figure is a front view of the fastener, and FIG. 6 is a side view thereof. In each figure, the same reference numerals indicate the same or corresponding parts, 1 is the building, 2 and 3 are the side walls, 4 is the slab, and 5
1 is a large beam, 6 and 7 are small beams, 8 and 9 are steel frames, 10 is a support beam, 11 is a slab formwork, 12, 13, and 17 are beam formworks, 20 is a temporary support, and 21 is a fastener.

Claims (1)

[Claims] 1 A plurality of support beams are suspended between the steel frames at intervals, and the slab formwork is supported on the support beams, and at the intervals formed between the support beams, the cross section is approximately U-shaped, and from the upper end of the opening to both sides. A beam formwork made of a steel plate with side edges extending from the side is dropped in, supported by the supporting beam via the slab formwork by the side edges, and tightened with fasteners on the sides of the beam formwork to form the beam. An iron plate formwork construction method characterized by supporting the bottom of the frame with temporary supports.