JPH042244Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention particularly relates to a deck plate for concrete deck slabs that is hung between temporary frames for forming beams in concrete deck slabs.

There are various shapes of deck plates for concrete slabs, and for example, there is a deck plate 1 as shown in FIG.

This deck plate 1 is made by bending and forming a single steel plate, and has a flat plate part 2 and parallel longitudinal (span direction) linear ribs 3 formed at multiple locations in the width direction on the back surface of this flat plate part 2. Although there are various cross-sectional shapes of the rib 3, in the example shown in FIG.
and a flange portion 3b having an isosceles triangular cross section formed at its lower end, and is pressed from the upper surface of the flat plate portion 2 and the lower surface of the flange portion 3b at both ends to form a web portion 3a. Flange part 3b
As shown in FIGS. 2 and 3, a flat suspension part 4 is formed by crushing the flat plate part 2 along the back surface thereof.

By the way, when using the deck plate 1 as a formwork for a concrete deck slab, as shown in FIG. When pouring concrete onto the deck plate 1, both ends of the deck plate 1 are supported by the upper flanges 5a of each H-shaped steel beam 5. Although there is no risk of it falling off the concrete slab, as shown in Fig. 5, both ends of the deck plate 1 are hung over the temporary frames 6 for forming beams in the concrete slab to be cast, and the deck is When concrete is poured over the plate 1 and inside the temporary frame 6 and the temporary frame 6 is removed after pouring, there is a risk that the deck plate 1 will fall off from the concrete slab that has been placed.

In this way, if both ends of the deck plate 1 are simply hung over the temporary frame 6 for forming the beam, when the temporary frame 6 is removed, the deck plate 1 will fall off from the concrete slab that has been placed. Conventionally, as a means to prevent this from falling off, round bar anchors were welded and installed between, for example, the reinforcing bars in the temporary frame 6 and the deck plate 1 at the site, or, for example, the deck plate 1 was Flat plate part 2
The deck plate 1 and the poured concrete slab were integrated by drilling through holes and protruding anchor bolts.

However, welding round bar anchors or drilling through holes in the flat part of deck plates and attaching anchor bolts on site requires complicated work, and the workability of deck plates for concrete slabs is poor. There was a problem that it was bad.

The present invention has been made to solve the above-mentioned conventional problems, and an embodiment thereof will be described below with reference to FIGS. 6 to 9.

As shown in FIG. 3, the flat suspension part 4 of the conventional deck plate 1 is considerably thicker than the flat part 2, and the poured concrete leaks from the step gap between the flat part 2 and the flat part 2. In the embodiment of the present invention, as shown in FIGS. 6A and 6B,
A portion of the flat plate portion 2 located on each end side of the deck plate 1 is extruded downward to form a recess 2a on the same horizontal plane as the lower surface of the flat suspension portion 4, and further inward from the edge of the recess 2a. , the anchor member insertion allowance 2b is extruded upward from the lower surface, or the portion of the flat plate 2 located at each end of the deck plate 1 is formed downward, leaving the anchor member insertion allowance 2b. The recessed portion 2a is formed in the same horizontal plane as the lower surface of the flat suspension portion 4 by extrusion molding.

The anchor member inserted into the anchor member insertion allowance 2b may be, for example, a Z-shaped anchor member 7 as shown in FIG. 7A or a U-shaped anchor member 7 as shown in FIG. 7B. It is better to use

The inner height and width of the anchor member insertion allowance portion 2b correspond to the wall thickness and width of the lower piece of the anchor member 7.

Incidentally, nail holes 2c and 7a for temporary fixing to the temporary frame 6 for forming the beam portion may be bored in the surface of the recess 2a, the surface of the anchor member insertion allowance portion 2b, and one lower surface of the anchor member 7, respectively.

Further, the anchor member 7 holds the flat bar in a Z
Although the anchor member is bent into a Z-shape or a U-shape, an anchor member formed by bending a round bar into a Z-shape or a U-shape may also be used.

In this case, the anchor member insertion allowance portion 2b is
For example, the inner height and width are set to dimensions corresponding to the outer diameter of the round bar so that the insertion portion of the anchor member made of the round bar can be inserted.

As shown in FIGS. 8 and 9, both ends of the deck plate 1 are hung on the temporary frame 6 for forming the beam, and if necessary, the nail holes 2c in the recess 2a are inserted into the temporary frame 6 for forming the beam. A nail is driven into the upper edge surface of the temporary frame 6 to temporarily fix the deck plate 1, and the anchor member insertion allowance 2b and the temporary frame 6 for forming the beam part are
For example, a Z-shaped anchor member 7 is inserted between the upper edge surface and the beam is inserted from the nail hole 2c on the anchor member insertion allowance 2b surface through the nail hole 7a of the anchor member 7, if necessary. Nails are driven into the upper edge of the temporary frame 6 to temporarily fix the anchor member 7, and then concrete 8 is poured over the deck plate 1 and inside the temporary frame 6 so as to bury the anchor member 7. It is set up.

As described above, according to the present invention, the flat plate portions 2 at both ends of the deck plate 1 spanned between the temporary frames for forming the beam portion in the concrete deck slab.
It is only necessary to insert the lower piece of the Z-shaped or U-shaped anchor member between the anchor member insertion allowance 2b provided in the frame and the upper edge surface of the temporary frame for forming the beam. As in the past, for example, round bar anchors are welded between the reinforcing bars in the temporary frame and the deck plate, or through holes are drilled in the flat part of the deck plate and anchor bolts are protruded. The anchor member can be easily set without complicated on-site work, and therefore the construction work of the deck plate for concrete slab can be performed more efficiently than before.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing an example of a conventional deck plate, Fig. 2 is a side view of the same as above, Fig. 3 is a perspective view showing a conventional example of the end of the deck plate in Fig. 2, and Fig. 4 is a perspective view of the deck plate. FIG. 5 is an explanatory diagram showing a mode in which the plate is stretched between the upper surfaces of the upper flanges of each H-shaped steel beam material, FIG. 6 Figure A,
B is a perspective view showing each embodiment of the deck plate end portion according to the present invention, FIGS. 7A and B are perspective views showing each embodiment of the anchor member, and FIG. 8 is a perspective view showing a construction example of the deck plate according to the present invention. The explanatory diagram shown in FIG. 9 is a sectional view taken along the line AA in FIG. 8. 1...Deck plate, 2...Flat plate part, 2a...
...Recessed portion, 2b...Anchor member insertion allowance, 2c...
... Nail hole, 3 ... Rib, 3a ... Vertical web part, 3
b...Flange part, 4...Flat suspension part, 6...Temporary frame for beam part formation, 7...Anchor member, 7a...
Nail hole.

Claims (1)

[Scope of utility model registration request] A flat plate part 2, parallel longitudinal ribs 3 each having an arbitrary cross-sectional shape formed at a plurality of locations in the width direction on the back surface of the flat plate part 2, and a joint between the top surface of the flat plate part 2 and the ribs 3 at both ends in the longitudinal direction. A flat suspension part 4 formed by pressing from the lower surface and crushing the rib 3
In the deck plate 1, in which the flat suspension parts 4 at both ends are spanned between the temporary frames for forming the beams in the concrete deck slab, the two surfaces of the flat plate parts at both ends are connected to the flat suspension parts 4. An anchor member insertion allowance 2b is formed in the recess 2a on the same horizontal plane as the lower surface of the recess 2a, and is pushed inwardly from the edge of a part of the recess 2a and upward from the lower surface. A deck plate for a concrete floor slab, in which a lower piece of a Z-shaped or U-shaped anchor member is inserted between the part 2b and the upper edge surface of the temporary frame for forming the beam part.