JPS62233358A - Construction of concrete floor panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a method of constructing concrete floor plates for buildings.

[Prior art]

Conventionally, the method of constructing concrete slabs using horizontal support beams was to install formwork on the horizontal support beams, pour a reinforced concrete floor on top of it, and then remove the horizontal support beams and formwork. There is.

[Problems to be solved by this invention]

However, with this conventional construction method, it is time-consuming to remove the support beams and formwork, and it requires workers to dismantle and remove the heavy support beams under the cast floorboards, which is dangerous work at high places. There were problems such as:

This invention was devised in view of the above-mentioned circumstances, and its purpose is to provide a method for constructing concrete floor plates that does not require the removal of formwork and that allows the removal of support beams to be carried out safely and easily. There is a particular thing.

[Means for solving problems]

According to this invention, a weir plate is used in the formwork and is integrated as a concrete floor plate after concrete is poured. In addition, the support beams that support the weir plates are fixed between the beams so that they can be released from the structural beams and then lowered and removed from the top of the concrete floor plate after concrete is poured. I will give it to you.

This eliminates the work of removing the formwork, and allows workers to safely and easily remove the supporting beams from the top of the formed concrete floor plate.

〔Example〕

The present invention will be explained below with reference to illustrated embodiments.

First, the locking fitting 3 for locking the support beam 1 to the beam 2 in order to carry out the method of this invention will be explained.

The locking fitting 3 includes a mounting member 4 to which the support beam 1 is attached;
a locking member 5 that locks onto the beam 2; a casing pipe 7 that is erected on the upper end surface of the locking member 5 and has an erected length that is at least the same distance as the thickness of the concrete floor plate 6 to be formed; and from the mounting member 4 side to the mounting member 4゜locking member 5
It passes through the inside of the casing pipe 7 and is fixed to the standing end of the casing pipe 7 with a screw nut 8, and a hole 10a is provided at the tip end protruding from the inside of the casing pipe 7 for installing the lobe 9. It consists of a suspension bolt 10 which is attached to the suspension bolt 10. (See Figures 5 and 6) When constructing the concrete floor plate 6 by the method of the present invention using the locking metal fittings 3 having such a configuration, first attach the locking metal fittings 3 to both longitudinal ends of the supporting beam l. The fastener 3 is attached to the attachment member 4 by bolting. Then, this support beam 1 is bridged by locking the locking member 5 of the locking fitting 3 between the beams 2, 2. (See FIGS. 1 and 5) Next, the weir plate 11 is placed on the upper end surface of the supporting beam 1 that has been constructed so that it is supported by the supporting beam 1. After that, this weir plate 1
After placing reinforcing bars 12 on top of 1, concrete 1
3. Perform pouring. (See Figure 2) Next, when the poured concrete has hardened and the concrete floor plate 6 has been formed, the suspension bolts 10 are installed in the holes LO.
Wind the row 19 around a and attach it. Thereafter, the nut 8 is unscrewed from the suspension bolt 10, and the lobe 9 is let out into the casing pipe 7 by human power or mechanical power such as a winch.

As a result, the suspension bolt 10 descends while supporting the mounting member 4 attached to the support beam 1 with its head tob.
That is, the support beam 1 is lowered while being suspended.

(Figure 3.

(See Figure 5) This lowering work is performed at each end of the support beam 1 as shown in Figures 3 and 4, or at both ends at the same time (not shown). Remove l. In addition,
At this time, if the support beam 1 and the attachment member 4 of the locking metal fitting 3 are attached by a pin joint, the situation shown in section B in FIG. 3 can be easily coped with.

In this way, construction of the concrete floor plate 6 with the weir body 11 integrated therein is completed.

Note that FIGS. 7 to 9 show other embodiments of the locking metal fitting 3.

In the one shown in FIG. 7, the mounting portion 10C for attaching the support beam 1 to the head tab of the suspension bolt 10 is integrally formed.
Compared to the one shown in FIG. 1, the mounting member 4 is not required and the number of parts can be reduced.

In the one shown in FIG. 8, the total length of the suspension pole 10 is made smaller than the thickness of the concrete floor plate 6, and the mounting member 4 and the locking member 5 are directly tightened with the suspension bolt 10 and napht 8. . Furthermore, the casing pipe 7 is made thicker so that the work of unscrewing the nut 8 from the support bolt 10 and the work of winding the lobe 9 into the mounting hole 10 can be carried out inside.

In this way, the hardened concrete floor plate 6
Work on the concrete floor plate 6 can be carried out smoothly without the suspension bolt lO protruding from the upper surface of the concrete floor plate 6.

The one in Fig. 9 shows how to attach the supporting beam 1 to the locking fitting 3.
The supporting beam receiver is attached to the attachment member 4 via the beam 14.

In this way, the beam 14 can receive the ends of a plurality of support beams 1 in the longitudinal direction of the support beam receiver, so that
A plurality of supporting beams l can be lowered and removed at the same time.

Note that the means for locking the support beams between the beams and constructing the bridge is not limited to the methods described in each of the above-mentioned embodiments. Any type of material may be used as long as it can be lowered and removed later. 4゜〔
Effects of the Invention] The present invention has the above configuration and has the following effects.

The support beam supporting the weir plate for concrete floor slab casting is made to be able to be unlatched on the upper surface of the concrete floor plate after the effect has been formed, and suspended and lowered after the locking is released,
By anchoring the structure between the beams, the removal work of the supporting beams can be carried out safely on the concrete floor plate.

Further, the removal work can be easily carried out without using special equipment, unlike when removing work is carried out below the concrete floorboard.

Furthermore, the fact that the removal work can be carried out safely without requiring any special equipment means that the removal work can be carried out in a short time and at low cost. As a result, the entire concrete floor slab construction work can be completed in a short time and at low cost.

[Brief explanation of drawings]

Figures 1 to 4 are process diagrams showing the method of constructing concrete floor plates according to the method of the present invention, Figure 5 is an enlarged sectional view of section A in Figure 2, Figure 6 is a perspective view showing the locking fittings, and Figure 7 8 and 9 are a perspective view and an enlarged sectional view showing another embodiment of the locking fitting. 1... Support beam, 2... Beam, 3...
・・Lock fitting, 4・・Mounting member, 5・・・・
- Locking member, 6... Concrete floor plate, 7...
... Casing pipe, 8 ... Nut, 9
......Lobe, 1o...Hanging bolt,
10a... mounting hole, 10b... head, 10c... mounting part, 11... weir plate,
12...Reinforced steel, 13.Old...Concrete, 1
４・・・・・・The supporting beam support is a beam. Figure 1 Figure 113 Figure 2 Figure 4rIJ Figure 6 Figure 71! ! a8r7! J

Claims (1)

[Claims] (1) Temporary support beams supporting the weir plates for concrete floor slab placement are releasably locked between the beams after the concrete is poured, and the weir plates and reinforcing bars are placed on top of the support beams. After placement, concrete is poured, and then, after the concrete hardens, the locking of the support beam is released from the top surface of the hardened concrete floor plate, and the released support beam is suspended and lowered from the top surface of the concrete floor plate. A method of constructing concrete floor plates, which is characterized by removing them.