JP3204275U - Deck plate - Google Patents

Abstract

Disclosed is a deck plate capable of easily and safely providing an opening corresponding to a floor through hole for piping, electrical wiring, and the like. A deck plate 10 includes a flat main plate portion 11 and side plate portions 12 and 13 extending downward from left and right ends of the main plate portion 11. A plurality of slits 21 are intermittently formed in a rectangular shape in the front portion of the main plate portion 11, the outside of these slits 21 is the inner edge of the opening 20, and the enclosed portion is the removal required portion 22. The space between adjacent slits 21 is a connecting portion 23. The slit 21 is a very narrow thing laser-processed in a manufacturing factory, and the wide part 21a for making the blade of a cutting tool approach into one end side is provided by predetermined length. [Selection] Figure 2

Description

  The present invention relates to a deck plate for forming a concrete slab of a steel structure building, and relates to a technique for providing an opening corresponding to a floor through hole for piping and electric wiring.

  When a floor through hole is formed in a concrete slab using a deck plate, a cylindrical sleeve is fixed to the top surface of the deck plate by bolts or welding, and concrete is placed, and then a fusing tool such as a burner or an arc cutter The deck plate is provided with an opening that communicates with the sleeve using a cutting tool (or a cutting tool such as a rotary cutter or a reciprocating saw) (see Patent Documents 1 and 2).

JP 2001-81963 A JP 2012-167443 A

The work of opening the deck plate is not only difficult to work, but also has a problem in terms of safety.
For example, when an opening is provided from the top of the deck plate, the operator must operate the cutting tool inserted into the sleeve in an unreasonable posture, and another worker on a stepladder below the deck plate It was necessary to receive a large amount of molten iron and cutting powder.
This work takes a relatively long time when the opening to be provided is large, which places a heavy burden on the operator and also causes a risk of falling from the stepladder. Inventors and others also considered that an opening was previously provided in the deck plate at the manufacturing plant so that the work of providing the opening at the site was unnecessary.
However, in this case, the operator may mistakenly think that there is no opening in the deck plate and drop a tool or the like from the opening to the lower floor, or if the opening is large, the worker himself may fall to the lower floor. There was also.

  The present invention has been made in view of the above problems, and an object thereof is to provide a deck plate that can easily and safely provide an opening corresponding to a floor through hole for piping, electrical wiring, and the like.

  A deck plate according to the present invention is a deck plate that is employed in a concrete slab having a floor through hole, and has an opening provided at a position corresponding to the floor through hole, and is provided intermittently along an inner edge of the opening. And a plurality of slits that separate the inner edge of the opening and the required removal portion, and a connecting portion that is provided between adjacent slits and connects the inner edge of the opening and the required removal portion.

  Preferably, a widening portion is provided at the end of the slit so as to allow the blade of the cutting tool to enter.

  Preferably, the slit is formed by laser processing or the like.

  According to the present invention, after the concrete is placed, the required removal portion can be easily removed simply by cutting the connecting portion with the cutting tool.

It is a perspective view of the deck plate which concerns on embodiment. It is a three-plane figure of the deck plate concerning an embodiment. It is a figure which shows the joining process of the sleeve with respect to a deck plate. It is a figure which shows the installation state of the deck plate to the steel frame, and the placement of concrete. It is a figure which shows the process of removing a required removal part from a deck plate. It is a top view which shows the modification of embodiment.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. In the description of the deck plate, for the sake of convenience, in FIG. 2, the upper right in the drawing is the front, the upper left in the drawing is the left, and the upper is the upper.

<Configuration of Embodiment>
FIG. 1 is a perspective view of a deck plate according to an embodiment.
FIG. 2 is a three-side view of the deck plate according to the embodiment.

  As shown in FIGS. 1 and 2, the deck plate 10 is a flat deck type formed by bending a highly corrosion-resistant steel plate, and has a flat main plate portion 11 and downward from left and right side ends of the main plate portion 11. The side plate portions 12 and 13 are extended. The side plate portions 12 and 13 are set shorter than the main plate portion 11, and the front and rear ends 11 a and 11 b of the main plate portion 11 overhang from the side plate portions 12 and 13. In addition, inward flanges 12a and 13a are provided at the lower ends of the side plate portions 12 and 13 in order to increase rigidity.

A plurality of (in the illustrated example, 20) slits 21 are intermittently formed in a rectangular shape in the front portion of the main plate portion 11, and the outside of the slits 21 is surrounded by the inner edge of the opening 20. The portion becomes the removal required portion 22, and the connection portion 23 is between the adjacent slits 21.
The slit 21 is a very narrow thing laser-processed in a manufacturing factory, and the wide part 21a for making the blade (after-mentioned) of a cutting tool approach is provided in the predetermined length by the one end side.
The connecting portion 23 has a longitudinal dimension that can sufficiently support the weight of the operator even when the connecting portion 23 is erroneously placed on the removal required portion 22.

<Operation of Embodiment>
FIG. 3 is a view showing a joining process of the sleeve to the deck plate.
FIG. 4 is a view showing a state where the deck plate is installed on the steel frame and the concrete is placed.
FIG. 5 is a diagram showing a process of removing the required removal portion from the deck plate.

  As shown in FIGS. 3 (a) and 3 (b), the operator attaches a rectangular tube-shaped sleeve 30 to the deck plate 10 carried in from the factory so as to surround the slit 21, and is fixed by welding, screws, or the like. To do. In addition, the deck plate 10 may be provided with a protrusion or the like on the outside of the slit 21 so that the sleeve 30 can be easily positioned.

  As shown in FIG. 4A, the operator installs the deck plate 10 to which the sleeve 30 is fixed together with other deck plates 40 on a steel frame 41 (H-shaped steel in the figure), and attaches the side plate portions 12 and 13 to each other. It is fixed to the upper surface of the steel frame 41 by welding or screws. Next, as shown in FIG. 4 (b), the worker installs a rebar 43 on the deck plates 10 and 40, places concrete 42, performs curing for a necessary period, and forms a concrete slab 50. To do.

  After confirming the hardening of the concrete 42, the operator operates a cutting tool such as a reciprocating saw in the sleeve 30 to insert the cutting blade 45 into the widened portion 21 a and cut the connecting portion 23 as shown in FIG. 5. . As a result, the removal required part 22 is separated from the inner edge of the opening 20, so that the operator cuts the remaining connection part 23 while raising the removal required part 22 upward when several connection parts 23 are cut. Go. The operator cuts the last connecting portion 23 and then lifts and removes the removal required portion 22 upward. Thereby, an opening 20 communicating with the sleeve 30 appears in the main plate portion 11 of the deck plate 10, and a rectangular floor through hole 51 (see FIG. 3A) is completed in the concrete slab 50.

    In addition, the floor through-hole 51 having a rectangular cross section is often used when a wiring (electric wire, telephone line, LAN cable, etc.) or a small-diameter pipe (gas pipe, water pipe, etc.) is passed between floors. A circular through-hole having a circular cross section is often used when a large-diameter pipe (drain pipe, air-conditioning duct, etc.) is passed between floors.

  In this embodiment, by adopting such a configuration, not only can the opening 20 of the deck plate 10 be formed in a short time, but also the amount of cutting powder falling on the lower floor is very small. can do.

  This is the end of the description of specific embodiments. However, aspects of the present invention are not limited to these. For example, in the above embodiment, the deck plate is provided with a rectangular opening, but a circular opening 20 may be provided in the deck plate 10 as shown in FIG. . In addition, the specific shape and number of slits can be changed as appropriate without departing from the spirit of the present invention.

  The deck plate according to the present invention can be effectively used for the construction of a concrete slab having a floor through hole.

DESCRIPTION OF SYMBOLS 10 Deck plate 11 Main plate part 12, 13 Side plate part 20 Opening 21 Slit 21a Widening part 22 Removal part 23 Connection part 30 Sleeve 42 Concrete 45 Cutting tool 45a Cutting blade 50 Concrete slab 51 Floor through-hole

Claims (3)

A deck plate that is employed in a concrete slab having a floor through hole, and an opening is provided at a position corresponding to the floor through hole,
A plurality of slits provided intermittently along the inner edge of the opening, and separating the inner edge of the opening and the portion to be removed;
A deck plate that is provided between adjacent slits and includes a connecting portion that connects an inner edge of the opening and the removal required portion.   The deck plate according to claim 1, wherein a widening portion is provided at an end of the slit to allow a cutting tool blade to enter.   The deck plate according to claim 1, wherein the slit is formed by laser processing or the like.

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