JP2713139B2 - Floor method using steel assembly as beam form - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor construction method which uses only buried formwork as a beam formwork and a floor formwork, does not use a diversion formwork, saves resources, and simplifies construction of the formwork. It is about.

[0002]

2. Description of the Related Art In the construction of a floor of a reinforced concrete building, a precast reinforced concrete member or a steel plate form is used for a floor portion, thereby reducing the use of a diverted form and saving resources and constructing the form. However, the mainstream method is to use a converted formwork to assemble, disassemble and remove the formwork, and to use precast reinforced concrete members. The fact is that it has not advanced so much.

[0003]

In the conventional construction method, the diverted formwork (plywood formwork) and the timber that reinforces it are diverted several times, but after that they have to be treated as industrial waste.
This is not preferable from the viewpoint of resource saving. In addition, assembling the formwork, installing the support, dismantling, and removing the structure require a great deal of work.

[0004]

SUMMARY OF THE INVENTION The present invention uses a buried form in place of a diverted form in the construction of a beam, thereby eliminating waste and simplifying the construction of the form. is there.

That is, according to the present invention, a plate-like body obtained by welding a grooved steel plate to the inside of a flat steel plate is used as a side formwork and a bottom formwork on both sides, and a joint between the bottom formwork and the side formwork is formed from the outside. An L-shaped steel material is integrated by welding, and a steel material assembly obtained by welding an L-shaped steel material to the outer side of the upper edge of the side formwork is used as a beam formwork, and the beam formwork and the buried floor formwork form a formwork. And then intermittently connecting the upper edges of the beam-side formwork with each other, and then casting concrete to perform the floor construction method.

The gist of the present invention is that it is relatively light weight, floor load,
The point is that a steel material assembly that can sufficiently withstand a beam load is used as a buried beam formwork.

[0007] The steel material assembly is composed of two plate-like bodies serving as side molds and one plate-like body serving as a bottom mold. Each of the plate-like bodies has a grooved steel plate inside a flat steel plate. Welded. The three plate-like members are joined by welding an L-shaped steel material from the outside to the joint between the bottom mold and the side mold, and an L-shaped steel material is welded to the outside of the upper edge of the two side molds. Into a steel product assembly.

The plate-like body is formed by welding two steel plates and is relatively lightweight, but can sufficiently withstand a floor load and a beam load. This plate-like body constitutes a part of the skeleton together with the reinforced concrete member to be cast later and bears the load. Although the weight increases in order to increase the strength of the plate-like body, it is preferable to fill the cavity between the two welded steel plates with cement milk or mortar.

In the present invention, the buried formwork is used for the floor formwork, and the diversion formwork is not used. As such a buried formwork, an ordinary steel plate with a built-in reinforcing steel or a steel plate-discarded formwork is used.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 shows columns, girders,
This shows the arrangement and connection of small beams, (a) is a plan view,
(B) is an arrow A view of (a).

2A and 2B show a small beam or a girder without a small beam. FIG. 2A is a longitudinal sectional view, and FIG. 2B is an A sectional view of FIG. (C) and (d) show the case where the steel material assembly and the beam reinforcement are integrated in advance, (c) is a longitudinal sectional view, and (d) is an A sectional view of (c).

FIGS. 3A and 3B show a joint portion of a large beam on which a small beam is bridged. FIG. 3A is a longitudinal sectional view of the small beam, FIG. 3B is a view of the arrow A in FIG. 3A, and FIG. FIG.

An example of a construction procedure according to the present invention will be described with reference to FIGS. 1, 2 and 3.

(1) The formwork of the pillar 1 is installed.

(2) A prefabricated plate-like body obtained by welding a grooved steel plate 7 to a flat steel plate 6 is cut into a predetermined size, and two side molds 2A and one bottom mold 9A. Create The three molds are assembled and two lower L-shaped steel members 5B are welded to the lower part from the outside, and the upper L-shaped steel material 5A is welded to the outer edge of the two side molds 2A to the outside. Assemble the solid. The steel beam assembly for the girder is suspended over the column formwork. If there are only large beams and no small beams, installation of beam formwork is completed.

(3) When bridging small beams between girders,
Similarly to the case of the girder, a steel beam assembly for a small beam, in which the lower L-shaped steel member 5B and the upper L-shaped steel member 5A are welded to two side molds 2B and one bottom mold 9B, is mounted on the girder form. hand over. At this time, the joint between the large beam formwork and the small beam formwork is as shown in FIG.
An opening 16 is provided at the center of the girder-side formwork 2A, an opening reinforcing L-shaped steel material 17 is welded along the left and right of the opening 16, and a small beam receiving L-shaped steel material 18 is welded along the lower edge. . These L-shaped steel materials also serve to prevent concrete leakage at the joint.

(4) The floor form 3 is laid over the beam form.

(5) The beam bars 12A and 12B and the stirrups 13A and 13B are installed.

(6) Narrow connecting steel plates 8 are welded at appropriate intervals (1 to 2 m) at several longitudinal positions on the upper surfaces of the girder-side formwork 2A, 2A and the girder-side formwork 2B, 2B. connect.

(7) Arrange slab muscles (not shown).

(8) The concrete 11 is cast.

Thus, the beam and the floor are completed.

In the above-mentioned construction procedure, an example in which the large beam formwork and the small beam formwork are sequentially assembled and then the beam reinforcement and the stirrup are arranged has been described. However, the steel material assembly and the beam reinforcement are integrated in advance. Aside from that, it is possible to bear a part of the load at the time of placing the concrete, and it is also possible to reduce the work of arranging the reinforcing bars on the site.

This method will be described with reference to FIGS. 2 (c) and 2 (d).

The steel material assembly is assembled by the above operations (2) and (3). The prepared upper perforated steel plate 10A and lower perforated steel plate 10B are arranged in the steel material assembly while being fitted to the upper end bar and the lower end bar, respectively. The upper perforated steel plate 10A is welded to the upper end bar and the upper L-shaped steel material 5A. Upper L-shaped steel 5
When welding to A, the side mold 2A or 2B is interposed in the middle, but welding is performed integrally while melting the side mold 2A or 2B. Similarly, the lower perforated steel plate 10B is welded to the lower end bar and the lower L-shaped steel member 5B. Upper perforated steel plate 10
The installation interval between A and the lower perforated steel plate 10B is about 1 to 2 m. In the case of this method, in addition to the beam arrangement operation ((5)), the connection operation by the connecting steel plate 8 ((6)) is also omitted.

Before the concrete is cast, it is preferable to provide a support 4 at the end of the small beam formwork and at the joint between the large beam formwork and the small beam formwork as shown in FIG.

[0028]

According to the present invention, only the buried formwork is used as the beam formwork and the floor formwork, and no diverted formwork is used. This saves resources and simplifies the construction of the formwork.

[Brief description of the drawings]

FIGS. 1A and 1B show the arrangement and connection of columns, girders, and small beams at the time of construction according to the present invention, wherein FIG. 1A is a plan view and FIG.
FIG. 2 is a view as viewed from the direction of the arrow A in FIG.

2 shows a girder or a girder without a girder,
(A) is a longitudinal sectional view, (b) is an A sectional view of (a).
(C) and (d) show the case where the steel material assembly and the beam reinforcement are integrated in advance, (c) is a longitudinal sectional view, and (d) is an A sectional view of (c).

FIG. 3 shows a joint between both girders on which a girder spans,
(A) is a longitudinal sectional view of a small beam, (b) is a view of an arrow A of (a),
(C) is an arrow B view of (a).

[Explanation of symbols]

1 ... Pillar, 2A ... Large beam side formwork, 2B ... Small beam side formwork,
3 ... Buried floor formwork, 4 ... Support, 5A ... Upper L-shaped steel, 5B ... Lower L-shaped steel, 6 ... Flat steel plate, 7 ... Groove-shaped steel plate, 8 ... Connected steel plate, 9A ..Girder bottom formwork, 9B
..Small beam formwork, 10A..Top perforated steel plate, 10B ..
Lower perforated steel plate, 11 ・ ・ concrete, 12A ・ ・ beam girder, 12B ・ ・ beam girder, 13A ・ ・ girder stirrup,
13B ・ ・ Stirrup of beam, 16 ・ ・ Aperture 、 17 ・ ・
Opening reinforced L-shaped steel material, 18. L-shaped steel material for receiving small beams.

Claims (2)

(57) [Claims] 1. A plate-like body in which a grooved steel plate is welded to the inside of a flat steel plate is used as a side formwork and a bottom formwork on both sides, and a joint between the bottom formwork and the side formwork is made of an L-shaped steel material from the outside. Integrated by welding,
A steel material assembly obtained by welding an L-shaped steel material to the outside of the upper edge of the side formwork is used as a beam formwork, and the formwork is formed by the beam formwork and the buried floor formwork, and is provided with a predetermined reinforcing arrangement and beam side formwork. A floor method consisting of intermittent connection between edges and then placing concrete. An opening for crossing with a small beam portion is provided at the center of the plate-like body, and a plate-like body formed by welding an L-shaped steel material to the outside along the left, right, lower edge of the opening is used as a girder-side formwork. The floor construction method according to claim 1.