JPH08158384A - Timbering of floor form, etc. - Google Patents

Abstract

PURPOSE: To provide a timbering, which is lightweight, not bulky, convenient for transport and installation, requiring no time and labor for removal, recovery and diversion, and improve the workability and safety, in the timbering to be mounted temporarily on a cut surface, etc., further bears forms for a floor and a beam. CONSTITUTION: Timberings 2 bear forms for a floor and a beam 4 on the cut surface, etc., of a ground 1, and the timberings 2 are formed of square tube- shaped corrugated boards with cut surfaces obtained by cutting the upper edges and lower edges of side wall surfaces almost horizontally. Height from the levels of the cut surfaces to the levels of the undersides of the forms for the floor or the beam 4 is formed, and water-resistant treatment is executed on the surfaces of each side wall surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mainly used for temporarily constructing a concrete underground structure structure of a building by a so-called upside-down construction method to support a floor or beam formwork on a root cutting surface or the like. The present invention relates to support work for floor formwork, etc., and more specifically, to support work made of corrugated cardboard paper, which is extremely excellent in handling such as transportation and installation, and does not require recovery and conversion.

[0002]

2. Description of the Related Art As a supporting structure for supporting a floor or a beam form, a pipe support type supporting structure has been widely known. For example, in Japanese Examined Patent Publication No. 56-6453,
Assembling various types of support work that matches the length of the floor bottom surface or beam bottom surface on the waste concrete cast on the root cutting surface of the ground, and supports it to construct the main floor. Is listed.

Further, in the supporting work such as the floor form according to Japanese Patent Application No. 6-9121, the entire supporting work is composed of a foam molding of synthetic resin such as styrene resin.

[0004]

SUMMARY OF THE INVENTION The pipe support type support work adjusts the height each time it is used to support various forms of a floor or beam form, and supports many such support types. It is troublesome to set up a work. In addition, after constructing the main structure such as the floor by the upside down construction method, unless all the supporting works installed in large numbers are dismantled and removed reliably from the work site, the subsequent ground cutting work will be resumed. It is not possible to do so, it takes a lot of time and labor, and work efficiency is poor.

In this respect, since the supporting work of the foamed molded product is smaller and lighter than the supporting work of the pipe support type,
It is easy to carry and handle. However, it is difficult to say that the supporting work of this foamed molded product is large and bulky, and that it is completely easy for an operator to handle. In particular, it has been pointed out that it takes time and effort to collect and convert this large-scale support work after constructing the main body of the floor and beams. Moreover, it eventually becomes industrial waste. Further, there are problems that it is costly to manufacture with a foamed molded product and that a stockyard for storing a large foamed molded product is required.

Therefore, the object of the present invention is to provide a patent application No. 6-
By further improving the support work related to No. 9121, it is extremely convenient to handle when supporting the formwork such as floors constructed by the upside down construction method, and it does not require recovery and diversion and the construction cost is reduced. And to provide support work that can save stockyard.

[0007]

As means for solving the above-mentioned problems of the prior art, the support of the floor form and the like according to the invention of claim 1 is the floor structure of the underground structure of the building by the upside down construction method. Is a supporting structure 2 for supporting the formwork 6 of the floor 3 and the beam 4 on the root cutting surface of the ground 1 when constructing the building toward the basement floor. The upper edge and the lower edge are formed in a tubular shape with corrugated paper having cuts 2a and 2b cut substantially horizontally, and the floor 3 or the beam 4 is formed from the root cutting surface level.
Has a height h up to the lower surface level of the frame 6 of each of the side wall surfaces 2
The surface of c is water-resistant.

According to a second aspect of the present invention, at least the lower edge cut 2b among the cuts of the second aspect of the support work of the first aspect is provided.
It is characterized in that it is water resistant. The support work according to the invention of claim 3 is a formwork of the floor 3 or the beam 4 on the waste concrete 5 cast on the root cutting surface, in which the support work 2 formed of the corrugated paper of the above-mentioned claim 1 or 2. It is characterized by supporting 6.

[0009]

Since the supporting structure 2 of the present invention is made of tubular corrugated paperboard having the side wall surface 2c, it can be folded and stocked, and can be unfolded and taken out as needed. Therefore, the substructure of the building is constructed. It is very easy and light to carry and place on the root cutting surface or the discarded concrete 5. Since the upper and lower edges of the supporting structure 2 are formed in substantially horizontal cuts 2a and 2b, the floor form 6 and the like are stably supported.

Since the supporting work 2 is made of corrugated cardboard, no special dismantling and removing work is required in the reverse construction method even when constructing a beam or the like on the subsequent basement floor, and the supporting work 2 is placed on the root cutting surface or the like. You can proceed with the work as it is. If the ground 1 (and the discarded concrete 5) is not diverted, the ground 1 (and the discarded concrete 5) can be randomly removed together with the excavation and removal.
Even if it is diverted, it can be safely recovered without any special attention.

Since the surface of each side wall surface 2c and the cuts 2a and 2b are subjected to a water resistant treatment, the floor formwork 6 and the like are firmly supported without being affected by water such as rainfall. Incidentally, the result of the test for confirming the proof stress of the supporting structure 2 is shown in the graph of FIG. The supporting works 2 used in the test are those in which the side wall surface 2c, the upper edge cut 2a, and the lower edge cut 2b are subjected to the water resistant treatment (a), and those which are not subjected to the water resistant treatment at all (b). The subsiding amount of the support 2 was measured by placing a lining plate equivalent to 752 kg on one support 2 and measuring the level of the upper part of the lining. As a result, as shown in (b) in the graph, those not subjected to the water resistance treatment subsided to about 45 mm, which was close to the limit amount of 50 mm in just one day. On the other hand, the subsidence amount of the support structure 2 subjected to the water resistance treatment of (a) is about 3 mm in 5 days despite the condition of rainfall.
Stays in. Moreover, it was confirmed that the strength was maintained for 18 hours or more even when the water-immersed state in which the lower edge cut 2b was flooded started. That is, it can be seen that the type (a) subjected to the water resistance treatment is necessary and sufficient as the support 2 for supporting the floor form or the like.

[0012]

Embodiments of the present invention shown in the drawings will be described below. FIG. 1 shows an overall view of a support structure 2 that supports a floor formwork of a main body constructed by the reverse construction method illustrated in FIG. The supporting work 2 is installed on the waste concrete 5 cast on the root cutting surface of the ground 1. However, it may be installed directly on the plucked root cutting surface or on a veneer. The support 2 supports the floor formwork, and concrete is poured to construct the main building. Thereafter, root cutting of the ground 1 and construction of the skeleton are sequentially repeated toward the basement floor to construct a skeleton of reinforced concrete or steel reinforced concrete structure.

The supporting structure 2 has sidewalls 2c ...
It is formed into a tubular shape by processing and assembling corrugated paper so that it is surrounded by. The corrugated paper has a thickness of 10 to 1
5 mm, width x depth x height is 510 x 410 x 6
It is 00 mm. The upper edge and the lower edge of the side wall surface 2c are formed into an upper edge cut 2a and a lower edge cut 2b which are cut substantially horizontally, respectively. The lower surface of the floor formwork 6 is stably supported, and a parallel level is taken along with the upper surface of the flat waste concrete 5 (see FIG. 3). The surface of the side wall surface 2c is subjected to water resistance treatment by coating a vinyl film or the like. Further, the cuts 2a and 2b have
Water-resistant treatment is applied by attaching duct tape. In addition, as a method for waterproofing the cut end, a brazing process, sealing with a polyurethane / silicone system, or fitting a U-shaped joiner made of plastic or the like is performed. The height h of the supporting structure 2 is equal to the dimension from the upper end level of the discarded concrete 5 to the lower surface level of the floor form 6, as shown in FIG.
It is formed to a desired height (60 cm in this embodiment) in the range of 00 cm. Further, when the supporting work is also used for supporting the beam formwork, its height h'can be set to the lower surface level of the beam formwork 6 '. In addition, even when the specification of the desired height is made, since it is made of corrugated cardboard, it can be easily changed (processed) by cutting with a cutter or the like.

When disposing the supports 2, 2 ′ having the above-mentioned structure on the concrete 5, the supports 2, 2 ′ made of corrugated cardboard, which are made in a desired size in the factory in advance, are folded and carried in. The work efficiency is very good because it is deployed locally. After the expansion, a plurality of waste concrete 5 are arranged in a substantially even columnar manner (see FIG. 2), and the preparation for constructing the concrete floor 3 (concrete beam 4) is completed. Since the corrugated paper supporters 2 and 2'are extremely lightweight, this installation work can be performed extremely easily. Then, on the upper edge cut 2a of the supporting structure 2, 2 ', the deck plate 6 "(FIG. 2) also serving as a form or the floor form 6, the beam form 6'
Place (Fig. 3). Then, the concrete floor 3 and the beams 4 are quickly constructed by placing concrete on the floors 3 and the beams 4 (note that reference numeral 8 in FIGS.
Is a column wall of soil constructed for mountain retaining). Even if water runs down or is inundated due to rainfall or forced cleaning during work, there is no concern about the bearing capacity because the supporting structure 2 is water resistant. Even in the subsequent root cutting of the ground 1 and removal of the discarded concrete 5, the corrugated paper support 2 can be recovered even if its shape is deformed or destroyed, unless it is diverted, and the floor of the underground structure frame is recovered.・
Beam construction work can be carried out quickly, efficiently and safely. Even if it is diverted, since the supporting work 2 is very lightweight and easy to repair, it can be effectively used without any trouble.

Incidentally, the supporting work 2 is not limited to use only in the upside-down construction method as in this embodiment, and is effectively used in a place where it is difficult to remove the supporting work afterwards. .

[0016]

The effect of the present invention is that since the supporting work of the floor formwork and the like of claims 1 to 3 is formed of corrugated cardboard, it is lightweight and can be folded and unfolded freely, and handling such as transportation and installation is extremely easy. It is convenient. As a result, the labor of formwork construction is reduced, which contributes to the reduction of construction cost and the construction period due to significant labor saving. In addition, since it is extremely light and can be handled randomly, it contributes to improved workability and safety without the need for removal, collection, and conversion. You can also save your stockyard,
It also has the advantage of being easy to recycle resources and being environmentally friendly.

[Brief description of drawings]

FIG. 1 is an overall view of support work.

FIG. 2 is a perspective view showing a usage state of a supporting work.

FIG. 3 is a cross-sectional view showing a supported state of the floor formwork.

FIG. 4 is a graph showing a proof stress test result of a support work.

[Explanation of symbols]

 1 Ground 2 Support 2a Upper edge cut 2b Lower edge cut 2c Side wall surface 3 Floor 4 Beam 5 Waste concrete 6 Formwork

Claims (3)

[Claims] Claim: What is claimed is: 1. A support for supporting a floor or beam formwork on a ground cutting surface of the ground, the support having a cut portion in which upper and lower edges of a side wall surface are cut substantially horizontally. It is formed in a tubular shape from corrugated cardboard, has a height from the root cutting surface level to the floor or beam formwork lower surface level, and is characterized in that the surface of each side wall surface is subjected to a water resistant treatment, Supporting work such as floor formwork. 2. A support structure for a floor form or the like according to claim 1, wherein at least a lower edge of the cuts is subjected to a water resistant treatment. 3. A support structure made of corrugated cardboard supports a formwork of a floor or a beam on a waste concrete cast on a root cutting surface, according to claim 1 or 2. Support work such as forged floor formwork.