JPS6137696Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a waste form used when constructing a concrete floor slab.

Conventionally, when constructing a concrete floor slab, a floor panel with the bottom side supported by support pipes was used, or a thin steel floor panel with truss reinforcements directly welded was used as a waste form and stretched between the beams. It was usually used as Therefore, in order to form a slab surface, it is necessary to press and support a large number of support pipes against the bottom surface of the floor panel at the work site, or to attach truss bars to the floor panel. There were many difficulties in terms of workability on site, such as the necessity of welding directly to the surface of the material.

This invention was devised to solve such problems in the conventional examples, improve work efficiency, and contribute to reducing material transportation costs and ultimately construction costs by transporting each component part separately. The gist of this invention is that it comprises a floor panel having a narrow-mouthed, bag-shaped cross section and a raised ridge portion raised upward, a connector consisting of a clamping portion formed with approximately the same cross section shape as the ridge portion so as to be externally fitted and engaged with the ridge portion and a hook portion erected on the top surface of the clamping portion, truss bars that are hung from the hook portions, and support plates erected on both side ends of the floor panel to support the truss bars.

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

That is, the waste formwork according to this invention is composed of a floor panel 1 made of a thin steel plate, a connector 2, a truss reinforcement 3, and a support plate 4. Of these, floor panel 1
has a narrow bag-shaped longitudinal section and a ridge 5 formed to protrude upward from the floor panel 1. The ridge 5 may have a bag-like vertical cross-sectional shape with the opening neck narrowed, and is not limited to a substantially triangular shape as shown in the illustration, but may also have an approximately Ω-shape, etc. They can have any shape and are arranged in rows at predetermined intervals.

The connector 2 is composed of a clamping part 6 and a hook part 7 of appropriate length, and the vertical cross-sectional shape of the clamping part 6 is approximately the same as that of the ridge part 5, and is externally fitted onto the ridge part 5. It is designed to allow Hook part 7
is formed with a hook portion, for example, in the shape of an inverted J, and the bending direction of the hook portion is along the length direction of the clamping portion 6, and the base end is placed at an appropriate position on the top surface of the clamping portion 6. It is erected by being fixed to.

The truss bar 3 on which the hook part 7 is hung may be one that is fixedly formed by interposing a reinforcing bar 10 bent in an uneven manner between the upper chord bar 8 and the lower chord bar 9 as shown in the illustrated example, and The portion 7 is hung on the lower chord muscle 9 at an appropriate position.

Support plates 4 attached to the floor panel 1 to support the truss bars 3 suspended from the floor panel 1 via the connectors 2 are attached to both sides of the floor panel 1 in a direction orthogonal to the truss bars 3 provided. It is erected by means such as welding to the end. The shape of the support plate 4 may be any shape as long as it can reliably support the truss bar 3 suspended from the hook portion 7 of the connector 2 without lowering it. A semicircular notch 11 on the upper edge in the length direction.
It is preferable that the

Since this device is constructed as described above, when using this device, the clamping portions 6 of the connectors 2 are attached to the floor panel 1 to be laid on the upper surface of the beam from the direction of the outer end of the ridge portion 5. Match them, insert them into the externally fitted state, and lock them. In this case, since the opening is at the lower side of the clamping part 6, a secure locking state can be maintained against loads in the vertical direction, and the clamping part 6 will not come off.

Thus, the connector 2 that is engaged with the ridge 5 of the floor panel 1 hangs on the lower chord 9 of the truss 3 through the hook 7. The truss bars 3 suspended in this manner are supported by placing the lower chord bars 9 in the notches 11 of the support plates 4 attached to both ends of the floor panel 1, and the floor slab is constructed as a whole. Form a waste form for use. Since a plurality of truss bars 3 are arranged on the floor panel 1 as necessary, the connectors 2 are also externally fitted and locked to the respective ridges 5 according to the required number of truss bars 3. .

The waste forms assembled in this way are placed between the beams installed between the steel frames.
In this case, since the truss bar 3 itself is simply supported on the support plate 4, it is preferable to bridge the upper chord bars 8 with reinforcing bars and fix them, for example, in order to prevent the truss bars 3 from falling.

When this waste form is used, it is extremely easy to assemble it not only at other locations, but also at the construction site at any time, making a great contribution to improving the efficiency of material transportation. In addition, since the connector 2 can slide freely, it is possible to position it in a way that is well adapted to the site situation, and when pouring concrete into the assembled waste formwork, work must be done on the truss bars 3. The concrete finishing work after pouring is also extremely easy and can be done beautifully because the worker's feet will not be buried in the poured concrete.

As mentioned above, this invention not only makes it possible to transport materials efficiently, but also greatly contributes to streamlining the raising of abandoned molds according to the site situation.
Furthermore, it can have extremely practical effects in constructing floor slabs, such as facilitating not only concrete pouring work but also concrete finishing work.

[Brief explanation of drawings]

The drawing shows one embodiment of this invention.
The figure is a partially cutaway perspective view showing the assembled state, and FIG. 2 is a front view thereof. DESCRIPTION OF SYMBOLS 1... Floor panel, 2... Connector, 3... Truss bar, 4... Support plate, 5... Ridge section, 6... Holding section, 7... Hook section, 8... Upper chord bar, 9 ...Lower chord, 10...Reinforcing bar, 11...Notch.

Claims (1)

[Scope of utility model registration request] A floor panel comprising a ridge portion whose longitudinal section has a bag shape with a narrow mouth and is bulged upward; A connecting device consisting of a similarly formed clamping part and a hook part erected on the top surface of the clamping part, a truss bar suspended by the hook part, and the floor for supporting the truss bar. A waste form for constructing a floor slab, characterized by comprising support plates erected at both ends of the panel.