JPH06167067A - Deck plate construction method - Google Patents

Abstract

PURPOSE:To shorten the process of attaching a hanging tool to a deck plate, and facilitate the attaching work. CONSTITUTION:A reinforcing hardware 13 is fixed and set to a stainless steel deck plate 1 by welding. The reinforcing hardware 13 consists of reinforcing parts 14 whose shape is formed to be fitted in the recessed parts of the deck plate 1. After the reinforcing hardware 13 is set to the deck plate 1, floor reinforcements 5 are arranged, and floor concrete 6 is placed. After the floor concrete 6 is cured, a hanging tool 15 is fixed to the lower face of the deck plate 1 at the position to which the reinforcing parts 14 are fitted, and then work for piping 16 is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deck plate construction method for constructing a building in which a hanging tool is attached to a deck plate in a building in a nuclear power plant or the like.

[0002]

2. Description of the Related Art In a building such as a nuclear power plant, various pipes, wirings, ducts, etc. are supported on ceilings, wall surfaces, floors and the like via suspenders. These hoists are generally attached by the deck plate construction method at the time of building construction. A first example of a deck plate construction method at the time of building a building in which a conventional suspender is attached will be described with reference to FIGS. 7 to 9, and a second example will be described with reference to FIGS. 10 to 13.

The first example is carried out in the order shown in FIGS. That is, in each drawing, reference numeral 1 partially shows the deck plate. FIG. 7 is for explaining the case of setting the conventional embedded hardware 3 on the deck plate 1, and shows a state in which the embedded hardware 3 is set on the deck plate 1.

That is, the deck plate receiving beam 2 for receiving the deck plate 1 is set, and the corrugated deck plate 1 is formed on the deck plate receiving beam 2 in an uneven shape.
Install.

When the installation of the deck plate 1 is completed,
After centering the position where the embedded hardware 3 is set, the embedded hardware 3 is set.
Is set and fixed to the convex surface of the deck plate 1 by welding. Four studs 4 are attached to the embedded metal piece 3 in advance. Although only one embedded hardware 3 is shown, there are actually many.

Next, when the embedded hardware 3 is set, the floor bar 5 is constructed on the deck plate 1 as shown in FIG.
Floor concrete 6 is placed. FIG. 8 shows a state in which the floor reinforcement 5 is applied from the state of FIG. 7 and the floor concrete 6 is placed and the embedded hardware 3 is set on the deck plate 1.

After the curing period of the floor concrete 6, as shown in FIG. 9, the lower portion 1a (the portion indicated by the dotted line) of the deck plate 1 located on the lower surface of the embedded hardware 3 is cut and the concrete is removed to be buried. The bottom surface of the insert 3 is exposed, the concrete of the cut part and the plate part that is the main body of the insert 3 are cleaned, and when the work is completed, the attachment of hangings such as pipes, that is, support work is continued. Is started.

In the support work, excess concrete adhering to the lower surface of the embedded metal 3 is removed to expose the metal surface of the lower surface of the plate of the embedded metal 3, and a hanging tool (not shown) is attached to the metal surface. Are attached by welding or the like.

Next, a second example will be described. That is, the figure
In 10, the embedded metal 3 is set on the upper surface of the deck plate 1, and the embedded metal 3 is attached to the deck plate 1 by spot welding 7.
Temporarily fix to. FIG. 11 shows the embedded metal 3. The embedded metal 3 has a plurality of studs 4 on its upper surface in advance.
Has been attached.

When the setting of the embedded product 3 is completed, floor concrete is placed (not shown) to give strength, so that a curing period of about one month is taken and the strength can be maintained. The scaffold 8 is assembled as shown, and the worker 9 cuts out the lower surface (the portion indicated by the broken line) of the recess of the deck plate 1 as shown in FIG. 13, and the U-shaped suspension 11 is provided in the cutout 10. It is inserted from below, abuts against the lower surface of the embedded metal 3, and is welded 12 for attachment.

[0011]

In the first example, since carbon steel is used for the deck plate 1, after the floor concrete 6 is cast and cured, the deck plate 1 is easily cut with gas to make a notch. The part 10 can be formed. However, the inside of the cell of the nuclear fuel reprocessing facility uses stainless steel for the deck plate 1 in order to have corrosion resistance.

Therefore, it is very difficult to form the cutout portion 10 in the stainless steel deck plate 1 by gas cutting, and it takes a long time to cut out the deck plate 1, which affects the construction period. There is a problem that becomes very large.

In the second example, the suspension 11 can be used only after the scaffold 8 is assembled and then the suspension is welded, and there are thousands of suspensions 11. It requires a great number of man-hours and shortens the process.

The present invention has been made to solve the above problems. When a stainless steel deck plate is used, it is not necessary to use an embedded metal as in the conventional example, and it is necessary to form a notch in the deck plate. The purpose of the present invention is to provide a deck plate construction method that can easily attach a hanging tool to a deck plate and can shorten the construction period and reduce costs.

Another object of the present invention is to provide a deck plate construction method in which the construction period is shortened by reducing the construction man-hours of a nuclear power plant and the construction work safety and work efficiency are improved.

[0016]

According to a first aspect of the present invention, there is provided a deck plate construction method at the time of building a building in which a reinforcing metal having a plurality of studs on the deck plate and a floor reinforcement are provided for floor concrete placement. Is made of stainless steel, and a plurality of studs are erected on the upper surface in the recess of the deck plate, and a reinforcing metal member with a reinforcing portion is formed on the lower surface is fitted and set, and floor reinforcement and floor concrete are placed. After the curing, the suspending device is attached to the outer surface of the deck plate at the portion where the reinforcing portion is fitted.

A second aspect of the present invention is a deck plate construction method at the time of building a building, in which a suspender is attached through an embedded metal object in the deck plate, and the deck plate is provided with floor reinforcement and the embedded metal object and concrete is placed. In the above, an opening is provided by notching only the bottom surface of the recess of the deck plate, and an embedded metal object to which a suspender is attached in advance is set on the deck plate, and the hook portion of the suspender is exposed from the opening. Characterized by placing concrete in the state.

[0018]

In the first aspect of the present invention, a stainless steel deck plate is provided with a reinforcing metal member that operates similarly to a conventional embedded metal member. This reinforcing metal is made of the same material as the deck plate, has a reinforcing portion on the lower surface that fits into the recess of the deck plate, and has studs standing on the upper surface. This reinforcing metal fitting is set as a deck plate, and a hanging tool is directly attached to the lower surface of the deck plate at the site where the reinforcing portion of the installation reinforcing metal fitting is located.

According to the second aspect of the invention, the hanger is attached to the lower surface of the embedded metal article in advance. A notch is provided in the deck plate, and the suspender passes through the notch so that the suspender is exposed on the lower surface of the deck plate. After providing a concrete insertion prevention material between the notch and the embedded material, the upper surface of the deck plate and both ends of the embedded material are welded and fixed, and floor reinforcement and concrete placement are performed. The hanger is ready to use even before the floor reinforcement.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the deck plate construction method according to the present invention will be described with reference to FIGS. In each drawing, the same parts as those in the conventional example are designated by the same reference numerals, and the description of the overlapping parts will be omitted.

FIG. 1 shows a reinforcing metal member 13 used in the first embodiment.
Is shown in a perspective view. Nine studs 4 are attached to the upper surface of the reinforcing metal piece 13 by welding, and an elongated strip-shaped reinforcing portion 14 having a shape that can be fitted into the recess of the deck plate 1 is formed on the lower surface.

As shown in FIG. 2, the reinforcing hardware 13 is set on the stainless steel deck plate 1 with the reinforcing portion 14 fitted in the recess.

Before the setting of the reinforcing metal 13 to the deck plate 1, the reinforcing portion 14 is formed in advance so as to have no gap with the concave and convex portions of the deck plate 1 with the same material, and after setting to the deck plate 1. Fix the entire circumference by welding.

In the deck plate construction method of this embodiment, first, after placing concrete (not shown) and curing the wall, the deck plate receiving beam 2 is set as shown in FIG. After that, the deck plate 1 to which the reinforcing metal 13 is previously attached is installed. After installation is complete, floor reinforcement 5
Then, the floor concrete 6 is placed.

After the floor concrete 6 is cured, the room in the building is passed over, and as shown in FIG. 4, the rectangular suspension 15 such as a support is directly welded to the deck plate 1 on the back side of the reinforcing portion 14 or mechanical means. It is attached and fixed with the
Construction begins.

When attaching the hanging device 15 to the ceiling portion, since the reinforcing metal member 13 is attached to the deck plate in advance, the hanging member 15 is directly attached to the deck plate 1 without cutting or finishing the deck plate 1. The tool 15 can be suspended.

According to the present embodiment, the deck plate 1 is made of stainless steel, but since it is not necessary to provide a notch which has been difficult in the past, the suspending tool 15 can be directly attached to the deck plate 1 and the construction period can be reduced. Shortening and cost reduction can be achieved.

Next, a second embodiment of the deck plate construction method according to the present invention will be described with reference to FIGS.
This second embodiment differs from the conventional example shown in FIG. 13 in that the hook-shaped suspending tool 11 is previously attached to the embedded metal article 3 and is integrated with the deck plate 1.

That is, first, at the time of setting the deck plate 1, the embedded hardware 3 to which the suspending tool 11 is attached in advance.
The notch portion 10 is formed by notching the bottom surface of the recess of the deck plate 1 at the place where the above is set to the deck plate 1.

Next, the hanging tool 11 is inserted into the cutout portion 10 to project the hanging tool 11 downward, and the plate portion of the embedded hardware 3 is placed on the convex portion of the deck plate 1 to mount the embedded hardware. 3 is welded with dots 7 and set on the deck plate 1. When the spot welding 7 is completed, a concrete insertion preventing material 17 is provided around the spot welding 7 and floor concrete is placed to prevent the concrete from entering. As a result, the deck plate 1 and the embedded hardware 3 are integrated.

According to such a method of setting the hanging tool 11, after the floor concrete is cast, the hanging tool 11 can be used immediately after the curing period for maintaining the strength is completed, and the quality is improved. Becomes

Therefore, it is possible to reduce the number of process steps that are critical in terms of work, and to significantly improve workability and safety in attaching the hanger. As a result, the construction period for nuclear power plants and the like can be greatly shortened and the costs associated with the construction can be reduced.

The present invention is not limited to the illustrated embodiment, for example, the installation order of the hanger and the embedded product is not particularly limited, and the deck plate and the hanger and the embedded product are integrated. In the case of the structure, the shape can be arbitrarily selected, and the number of studs is not limited.

[0034]

According to the present invention, since the suspending tool is set at the stage of setting the deck plate, it is not necessary to attach the suspending tool after placing the floor concrete as in the conventional example. There is no need for plate cutouts or welding work for attaching lifting equipment.

Therefore, the number of man-hours for constructing a nuclear power plant or the like can be reduced, the construction period can be shortened, and the cost associated with the construction can be reduced. Moreover, since the work after the conventional floor placing is unnecessary, the working environment is improved, and the safety and work efficiency of the construction work can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a reinforcing metal member in a first embodiment of a deck plate construction method according to the present invention.

FIG. 2 is a perspective view showing a state where the reinforcing metal member in FIG. 1 is set on a deck plate.

FIG. 3 is a longitudinal sectional view showing a state in which floor deck reinforcement is applied to the deck plate in FIG. 2 and floor concrete is placed.

FIG. 4 is a vertical cross-sectional view showing a state in which suspenders and pipes are installed on the deck plate below the reinforcing metal from the state of FIG.

FIG. 5 is a longitudinal sectional view showing a second embodiment of the deck plate construction method according to the present invention.

FIG. 6 is a bottom view of the deck plate seen from below in FIG. 5;

FIG. 7 is a perspective view showing a state in which an embedded metal object is set on the deck plate in the first example of the conventional deck plate construction method.

FIG. 8 is a vertical cross-sectional view showing a state where floor reinforcement is applied from the state of FIG. 7 and floor concrete is placed.

9 is a vertical cross-sectional view showing a state in which the recess of the deck plate on the back surface of the embedded hardware is removed from the state of FIG.

FIG. 10 is a longitudinal sectional view showing a state in which an embedded metal object is spot-welded on a deck plate in a second example of the conventional deck plate construction method.

FIG. 11 is a front view showing the embedded hardware in FIG.

FIG. 12 is a conceptual diagram showing a work state in which the hanging tool is attached to the lower surface of the embedded metal article from the state of FIG.

FIG. 13 is a vertical cross-sectional view showing, in an enlarged manner, the hanging part in FIG.

[Explanation of symbols]

1 ... deck plate, 2 ... deck plate receiving beam, 3
… Built-in metal fittings, 4… studs, 5… floor reinforcement, 6… floor concrete, 7… dot welding, 8… scaffolding, 9… workers, 10… notches, 11… hangers, 12… welding, 13 ... Reinforcing hardware, 14 ... Reinforcing part, 15 ... Hanging tool, 16 ... Piping, 17 ... Concrete insertion prevention material.

Claims (2)

[Claims] 1. A deck plate construction method at the time of building a building in which a reinforcing metal having a plurality of studs on the deck plate and floor reinforcement are applied and floor concrete is laid, wherein the deck plate is made of stainless steel, and A plurality of studs are erected on the upper surface in the recess, and a reinforcing metal member with a reinforcing portion is formed on the lower surface is set by fitting, floor reinforcement and floor concrete are placed and cured, and then the reinforcing portion is fitted. A deck plate construction method, characterized in that the hanging device is attached to the outer surface of the deck plate at the combined portion. 2. A deck plate construction method at the time of building a building, in which a hanging tool is attached via an embedded metal object in a deck plate, and the deck plate is provided with floor reinforcement and an embedded metal object and concrete-casting, An opening is provided by notching only the bottom surface of the recess of the deck plate, and the embedded hardware to which the hanging tool is attached is set in the deck plate in advance, and the hook portion of the hanging tool is exposed from the opening, Deck plate construction method characterized by placing concrete.