KR20020067306A - Construction method for slab mold - Google Patents

Abstract

PURPOSE: Provided is to shorten a frame construction period by early disassembly, use the all disassembled materials into the upper floor effectively, and improve working condition. CONSTITUTION: The slab mould construction comprises the following steps as: disassembling the rest plywood non-supported on the timbering, sleeper, joist, and the temporary timbering by installing temporary timbering on the mould plywood directly in curing the concrete; disassemble the rest plywood and temporary timbering by installing residual timbering on the lower part of the casting floor disassembled plywood mould; using all disassembled sleeper, joist, plywood, and timbering except residual timbering into the upper floor; and disassembling the residual timbering after curing concrete until gaining concrete standard strength of design, where slab construction comprises the following installing steps as; the sleeper and the joist; many vertical timbering on the casted floor to support the sleeper and joist, slab mould plywood on the sleeper, and concrete casting layer on the mould plywood.

Description

Construction method for slab {Construction method for slab mold}

The present invention relates to a method for constructing a slab formwork, by using concrete that expresses the early strength is possible to premature dismantling of the formwork, significantly reducing the frame air, and the dismantled materials can be dedicated to the upper layer and efficient use of materials In addition, the present invention relates to a slab formwork for improving the working environment.

A conventional slab formwork construction method will be described with reference to FIGS. 1 and 2.

1 is a schematic front view, and FIG. 2 is a plan schematic view of FIG. 1.

Installing the yoke (10) and joist 11 as shown, a plurality of SUPPORT (12) installed vertically installed on the pour finish layer (1) pre-installed to support the yoke and joist And installing a slab formwork plywood 13 on the yoke 10, forming a concrete pour layer 2 on the formwork plywood 13, the upper portion on the concrete pour layer 2 Constructing the slab formwork, and sequentially dismantling the formwork after curing the pour layer 2.

However, in the conventional construction method, at least 400 kg / cm 2, which is the normative strength of the casting layer 2, or to maintain 140 kg / cm 2 or more, which is the daily strength for formwork demoulding, is used. It must be kept for at least 28 days, and the form removal after concrete pouring should be done after 3 ~ 4 days, so that the air is extended and the formwork can not be demolished early so that the new formwork can be used twice. There is a problem that the use is lowered, the work space can not be efficiently used until the formwork is dismantled.

In addition, the repetitive use of plywood has reduced the quality improvement of the frame construction, such as the need to install separate fitting plywood and copper bar, and it is difficult to reduce the cost by reducing the number of dedicated dies and copper bar. There was no systematic work.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to use the concrete expressing the early strength can be early disassembly of the formwork to significantly shorten the frame air, dismantled material to the upper layer It is to provide a slab formwork construction method that can be converted to improve the working environment with efficient use of materials.

The slab formwork construction method of the present invention for achieving the above object is to install a yoke and joist, to install a plurality of copper (SUPPORT) installed vertically on the pre-installed finishing layer to support the yoke and joist In the construction method comprising the step of installing the slab formwork plywood on the yoke, and forming a concrete pouring layer on the formwork plywood, the temporary copper bar during the day curing of the concrete pouring layer to the plywood formwork Directly installing and dismantling the copper bar, yoke and joist and the remaining plywood not supported by the temporary copper bar, installing residual copper bar at the bottom of the pouring layer where the plywood formwork is dismantled, and dismantling the remaining plywood and temporary copper bar, and dismantled The yoke, joist, plywood, and clubbing of the upper layer are repeated in the upper layer. Gong.

In addition, the concrete forming the pour layer is characterized in that the high-strength concrete can express the early strength by the addition of the AE reducing agent and the C / W ratio is high.

1 is a schematic front view for explaining a conventional construction method,

2 is a plan schematic view of FIG. 1;

3 is a construction process diagram of the present invention,

4 is a front view for explaining the construction method of the present invention,

5 and 6 are plan schematic views of FIG. 4.

5 is a plan view showing a temporary group installation state when removing the formwork;

Figure 6 is a plan view of the residual copper installation state during the upper layer work.

<Explanation of symbols for the main parts of the drawings>

1: pour finish layer 2: pour layer

10,10 ': Yoke 11,11': Joist

12,12 ': East Side 13: Plywood

14: Temporary club 15: Residual club

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a process diagram of the present invention, Figure 4 is a schematic front view of the present invention, Figure 5 and Figure 6 is a plan view of Figure 4 is a plan view showing the temporary group installation state when removing the mold and the remaining group installation state during the upper layer work Top view.

As shown in Figure 1, the slab formwork construction method of the present invention to install the yoke 10 and the joist 11, as shown in Figure 1 and 2, the yoke and joist already installed so that the joist complete layer (1) Installing a plurality of SUPPORT (12) vertically installed on the step, Installing a slab formwork plywood (13) on the yoke (10), and Concrete pouring layer on the formwork plywood (13) (2) forming a yoke (10 ') and joist (in the state of supporting the temporary plywood (14) directly installed on the plywood (13) formwork during the day curing of the concrete pour layer (2) 11 ') and the club 12' are dismantled.

At this time, it is preferable to install the temporary spacing 14 at intervals twice as large as the spacings installed at the time of pouring. Therefore, the pouring layer 2 is temporarily supported by the plywood holding force of the temporary spacing 14. In addition, the yoke (10 '), joist (11'), the grouping (12 '), and the plywood 13, which is not supported by the temporary clubs 14 can be dismantled.

The dismantled yoke (10 '), joist (11'), club (12 '), and plywood (13) is dedicated to the upper layer formwork material.

Next, the temporary copper bar 14 and the remaining remaining plywood 13 are dismantled in a state in which the residual copper bar 15 is directly installed at the bottom of the poured layer 2 in which the plywood 13 is disassembled.

The installation interval of the residual copper barley 15 is preferably installed at the same interval as the temporary copper barley 14 previously installed, and is maintained until the required concrete strength (about 28 days).

Accordingly, the final support of the pouring layer 2 is maintained by the remaining copper group 15, and the remaining yoke (10 '), joist 11', copper bar 12 'except for the residual copper bar , And plywood 13 is dedicated to the upper layer formwork material.

Each upper layer is constructed by repeating the construction method of the above step.

As described above, the slab formwork construction method of the present invention by dismantling 1/2 of the pre-installed copper bar to directly install the concrete slab to secure the required strength of the concrete slab, by the method of supporting the slab, It can be dismantled, which greatly reduces the frame air, and the dismantled materials can be dedicated to the upper layer, which makes it possible to use the material efficiently and improve the working environment.

Although the invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that modifications and variations can be made within the spirit and scope of the invention, and such variations or modifications will belong to the appended claims. .

Claims (5)

Installing a yoke and a joist, installing a plurality of SUPPORT vertically installed on the pour completion layer pre-installed to support the yoke and the joist, installing a slab formwork plywood on the yoke, and In the slab construction method comprising the step of forming a concrete pouring layer on the formwork plywood, Dismantling the remaining plywood that is not supported by the clubb, yoke and joist and the temporary club by installing a temporary club directly on the plywood formwork during curing of the concrete pouring layer; Dismantling the remaining plywood and temporary copper bar by installing a residual copper bar at the bottom of the poured layer where the plywood formwork is dismantled; Deconstructing the yoke, Jangsun, plywood, copper bark to the upper layer except for the remaining copper bark; And Forming a slab formwork for slabs, characterized in that the step of dismantling the residual copper after maintaining until the required concrete strength. The method of claim 1, wherein the installation of the temporary copper bar directly on the plywood formwork is one day after the concrete is placed. 2. The method of claim 1, wherein the concrete forming the pour layer is a high-strength concrete that can express the early strength by adding a high-performance AE reducing agent and the C / W ratio is controlled. The method according to claim 1, wherein the installation interval of the temporary copper bar is installed at twice the interval of the copper bar installed during pouring. The method according to claim 1, wherein the installation interval of the residual copper bar is installed at the same interval as the previously installed temporary copper bar.