JPH06146580A - Frame around opening of slab opening/closing part and prior fitting of metal block for opening - Google Patents

Abstract

PURPOSE:To continuously and efficiently construct an opening/closing part of a slab, by fitting a metal block in advance before placing concrete slab by use of a decorated setting frame supporting the metal block for the opening so as to form a slab opening without removal of a conventional frame or additional placing of concrete. CONSTITUTION:A frame 1 of the peripheral edge of an opening is composed of a lower decorated setting frame 2 to be attached at the opening made on a flat type deck (a) and a upper decorated setting frame 3 which is superimposed with the lower decorated setting frame 2 along the upper peripheral edge thereof and provided with a metal block for the opening frame at the top. The upper decorated setting frame 3 of the frame 1 of the peripheral edge of the opening 1 is attached so as to vertically adjust the position against the lower decorated setting frame 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening peripheral form frame for supporting an opening metal part for forming a slab opening / closing part such as a floor inspection port or a remodeling port in a slab, and a method for pre-opening an opening metal part using the frame It is about.

[0002]

2. Description of the Related Art Generally, when it is necessary to provide a slab with a slab opening / closing portion such as a floor inspection opening or a retouching opening, an opening metal piece composed of an opening lid and an opening frame metal piece is used.
When forming slabs, slab discard forms such as steel flat type decks are being used as an alternative to plywood forms, so if a slab that uses this slab discard form is used, The opening / closing part is formed as follows.

First, as shown in FIG. 6, a peripheral formwork (plywood) b, which is slightly larger than the actual slab opening / closing part, is arranged at a predetermined position of the flat type deck a, and then concrete c is poured. . In the figure, d is a mounting rebar,
Before the concrete c is placed, it is arranged in all directions with the peripheral form b passing through. Then, after placing the concrete, the peripheral form b is removed, and as shown in FIG. 7, the opening frame metal part f including the opening lid e and the opening frame metal part f is attached to the mounting base rebar d. Install. The opening frame metal fitting f is a frame-like member having a substantially L-shaped side cross-sectional shape and having a lid receiving surface h on the inner peripheral side, and a plurality of mounting bases having a substantially L-shaped cross section arranged on the outer peripheral side thereof. It is fixed to the mounting base rebar d via the metal i (see FIGS. 10 and 11).

Thereafter, as shown in FIG. 8, the opening frame metal fitting f
The form j is arranged from the flat type deck a along the inner circumference of the above, and concrete k is placed on the outer peripheral side of this form j.

FIG. 9 shows a state in which the form frame j is removed and a predetermined portion of the flat type deck a is cut and opened. After the opening, an opening lid e is attached (the flat type deck a is welded and cut. In order to do this, the opening lid will be added later). As shown in FIGS. 10 (A) and 10 (B), by disposing the opening lid e on the opening frame metal fitting f, the slab opening / closing portion A such as the floor inspection port or the retouching port can be obtained. FIG. 11 shows a part of the slab opening / closing part A. In the figure, 1 is a back plate of the opening lid, m is an edge metal member for the opening lid, and constitutes the opening lid e, and inside the mortar n for the lid. Is filled.

[0006]

However, in the above-described construction procedure, it takes a long time until the post-concrete concrete is struck and the opening metal fitting is completely attached, and there is a safety problem in terms of accommodation. Remain. Since the work must be intermittently performed until the opening metal fittings are properly attached, the productivity at the site is not good and the post-cast concrete k that is placed around the slab opening and closing part
Misaligned unevenness is likely to occur in the jointing of concrete and concrete c,
There is a problem that the appearance around the opening / closing part is poor.

In view of the above situation, therefore, the present invention uses a makeup driving formwork as a support for the opening metalwork and pre-places the opening metalwork by casting concrete (slab) to remove the conventional formwork or concrete. It is an object of the present invention to form a slab opening / closing portion without performing post-pressing or the like, and an object thereof is to enable continuous and efficient construction of the slab opening / closing portion.

[0008]

The present invention has been made in consideration of the above-mentioned problems, and is composed of an opening lid and an opening frame metal member for forming an opening / closing portion such as a floor inspection opening or a remodeling opening of a slab. An opening-periphery formwork supporting an open metal fitting, which is a frame-shaped lower makeup driving formwork attached to an opening opened in a slab discarding formwork such as a flat type deck, and an upper peripheral edge of the lower makeup driving formwork. It consists of a frame-shaped upper makeup driving form which is overlapped and an opening frame of the above-mentioned opening hardware is attached, and the upper makeup driving form can be vertically adjusted with respect to the lower makeup driving form. It is intended to solve the above-mentioned problems by providing a mold around the opening of the slab opening / closing part, which is characterized in that it is attached.

Another aspect of the present invention is to dispose an opening metal member composed of an opening lid and an opening frame metal member for forming an opening / closing portion such as a floor inspection opening and a retouching opening of a slab on a flat type deck or the like. After opening an opening in the flat type deck or the like and attaching a frame-like peripheral peripheral formwork corresponding to the opening of the opening metal object in the height direction to the opening of the flat type deck or the like, the opening Attaching the opening frame metal object of the opening metal object to the upper part of the peripheral formwork, and positioning the opening metal object at a predetermined height according to the slab thickness by adjusting the height of the opening peripheral formwork. Therefore, the above-mentioned problem is solved by providing this prefabricated construction method.

[0010]

In the first aspect of the invention, as described above, the formwork around the opening is composed of the lower makeup driving formwork attached to the opening of the flat type deck and the like and the upper makeup driving formwork which can be moved up and down. While being supported by the mold around the opening, the opening metal piece is placed at a predetermined height above the opening of the flat type deck or the like previously opened.

In the second aspect of the invention, the opening metal fitting is attached to the opening of the flat type deck or the like through the peripheral mold of the opening before the concrete is cast on the flat type deck or the like. As a result, when the concrete is placed on the flat type deck or the like, the concrete is filled around the mold around the opening and the metal piece for the opening.

[0012]

The present invention will be described in detail below with reference to an embodiment shown in FIGS. The parts having the same configurations as those of the conventional example are designated by the same reference numerals, and the description thereof will be omitted. FIGS. 1 to 3 show a state in which an opening metal piece g is first attached using a mold 1 around the opening and then concrete c is placed, and FIGS. 4 and 5 show the formed slab opening / closing part A. . As shown in FIG. 1, the opening peripheral formwork 1 is attached to an opening B previously opened in the flat type deck a, and a side wall is formed along the inner peripheral edge of the opening B so that a standing wall portion 2a can be obtained. A frame-shaped lower makeup driving formwork 2 having a substantially L-shaped cross section, and a frame-like lower makeup driving formwork 2 corresponding to the opening B like the lower makeup driving formwork 2 and hanging wall along the inner peripheral edge. 3a, and an upper decorative driving mold 3 having a substantially L-shaped side section.

As shown in FIG. 5, the lower makeup driving form 2 is arranged so as to be inserted from below into an opening B formed by cutting a predetermined portion of the flat type deck a. Packing 2b positioned so as to avoid material, decorative form frame fixing bolt 2c,
And it is fixed using the metal fitting 2d located on the upper surface side. The attachment and fixing to the flat type deck a is not limited to this configuration.

Further, as shown in FIG. 5, the hanging wall portion 3a of the upper makeup driving form 3 is a lower makeup driving form 2.
The upright wall portion 2a is superposed on the inner peripheral surface of the upper portion of the upright wall portion 2a so as to be slidable in the vertical direction, and the both are connected by the thickness adjusting fixing screw 4. Although not shown, the thickness adjusting fixing screw 4 is inserted through a vertically long hole provided in at least one of the upright wall portion 2a and the hanging wall portion 3a. By tightening and loosening the thickness adjusting fixing screw 4, a lower makeup driving is performed. The structure is such that the height of the upper makeup driving form 3 with respect to the form 2 can be adjusted. This point is for positioning the opening metal piece at a predetermined height according to the slab thickness as described later.

After the mold 1 around the opening having the above-mentioned structure is attached to the opening B, the opening frame metal piece f of the opening metal piece g is attached and fixed to the flat plate portion 3b of the upper decorative driving mold by means such as welding. , Corresponding to the opening B through the opening peripheral formwork 1 (see FIG. 2). At this time, the opening peripheral formwork 1 is adjusted so that the height of the opening metal piece g corresponding to the slab thickness can be obtained.

After the opening metal fitting g is attached in this way, as shown in FIG. 3, by placing concrete c, the slab opening / closing portion A is formed. In this embodiment, the slab discard formwork is described as a flat type deck,
The present invention is not limited to this flat type deck, but can be applied to various corrugated iron plates (for example, keystone plates).

[0017]

With the opening peripheral formwork according to the first aspect of the present invention described above, it is possible to eliminate the need for a conventional formwork for blocking concrete when placing a slab and a formwork for blocking post-casting concrete. The mounting base rebar for supporting the metal opening is also unnecessary, and the height of the metal opening can be adjusted by the frame around the metal opening, which makes mounting of the metal opening simple. Also, since the opening edge of the slab discard formwork (flat type deck etc.) is covered,
It is possible to prevent injuries such as cuts when a person goes in and out of the slab opening / closing part during the construction period.

Then, by the prefabrication method of the second invention,
The slab opening and closing part is no longer required, which is the conventional installation of peripheral formwork (when placing slab concrete), formwork (when placing concrete around opening metal fittings), and concrete placing around opening metal fittings. The steps can be omitted when forming the structure, so that the labor can be saved and the total cost can be reduced. Also, floor finishing can be done at once,
It is easy to ensure the accuracy of floor finishing. Further, the opening can be completely cured by the main opening lid, and accidents such as a fall and a fall can be prevented, which is advantageous in terms of safety, and has an effect of excellent practicality.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state in which an embodiment of a mold around an opening according to the present invention is attached.

FIG. 2 is an explanatory view showing a state in which an opening metal fitting is attached to a mold around the opening.

FIG. 3 is an explanatory view showing a state in which slab concrete is poured.

4A and 4B are explanatory views showing a slab opening / closing portion according to the construction method of the present invention, where FIG. 4A shows a plane and FIG. 4B shows a cross section.

FIG. 5 is an explanatory view showing an enlarged part of the slab opening / closing part.

FIG. 6 is an explanatory view showing a state in which peripheral formwork is arranged and slab concrete is placed in a conventional example.

FIG. 7 is an explanatory view showing a state in which an opening frame metal member is attached in a conventional example.

FIG. 8 is an explanatory view showing a state in which concrete is placed on the outer peripheral side of the opening frame fitting in the conventional example.

FIG. 9 is an explanatory view showing a state in which a predetermined portion of a flat type deck is opened in a conventional example.

FIG. 10 is an explanatory view showing a slab opening / closing portion in a conventional example, (A) showing a plane, and (B) showing a cross section.

FIG. 11 is an explanatory view showing an enlarged part of a slab opening in a conventional example.

[Explanation of symbols]

 1 ... Opening peripheral formwork 2 ... Lower makeup driving formwork 2a ... Standing wall part 3 ... Upper makeup driving formwork 3a ... Hanging wall part a ... Flat type deck e ... Opening lid f ... Opening frame metal parts g ... Opening metal parts A ... Slab opening / closing part B ... Opening

Claims (2)

[Claims] Claims: 1. An opening peripheral formwork for supporting an opening metal piece comprising an opening lid and an opening frame metal piece for forming an opening / closing part such as a floor inspection opening or a slab of a slab, which is opened on a flat type deck or the like. A frame-shaped lower makeup driving formwork to be attached to the opening, and a frame-shaped upper makeup driving formwork in which the opening frame metal fittings of the opening metalwork are attached to each other so as to overlap each other over the upper peripheral edge of the lower makeup driving moldwork. The upper peripheral makeup driving mold is attached to the lower cosmetic driving mold so that the position of the upper cosmetic driving mold can be adjusted in the vertical direction. 2. A flat type deck, etc., in which an opening metal piece comprising an opening lid and an opening frame metal piece for forming an opening / closing part such as a floor inspection opening or a revision opening of a slab is arranged on a flat type deck or the like. After opening an opening in the opening peripheral formwork, which can be expanded and contracted in the height direction in a frame shape corresponding to the opening of the opening metal object, after being attached to the opening such as a flat type deck, the upper part of the opening peripheral formwork A method for pre-applying an opening metal fitting, wherein the opening metal fitting is attached to the opening metal fitting, and the height of the mold around the opening is adjusted to position the opening metal fitting at a predetermined height according to the slab thickness.