KR200292760Y1 - The base bar of Al-forms for a wall - Google Patents

Abstract

The present invention relates to an aluminum base scaffold having a downwardly open cross-sectional structure installed between the bottom surface of the wall construction formwork and the floor plywood fixed to the bottom surface.

The formwork foundation for the formwork of the present invention, the aluminum body 20 consisting of two side plates (20B) and 20C extending upright from the upper end of each of the width direction of the upper plate (20A) and the upper plate (20A); An aluminum outer rib 21 extending upright from the end of the one side plate 20C to the outside; An aluminum lower rib 22 extending downward from an end of the other side plate 20B; It consists of aluminum inner ribs 23 formed by branching upright from the boundary of the other side plate (20B) and the lower ribs 22 inwardly, and a plurality of coupling holes (H) in the upper plate (20A) and the outer ribs (21). ) And through holes h are formed, respectively, and a groove G is formed on the upper surface of the upper plate.

Formwork foundation for the formwork of the present invention is systemized with the formwork can improve the straightness and finish state of the lower end of the wall, there is an advantage that the wood for the foundation installation is saved by the protective role of the aluminum foundation scaffold that can be reused repeatedly.

Description

Formwork Base Bars {The base bar of Al-forms for a wall}

The present invention relates to a foundation scaffold for formwork foundation installed in the lower end of the formwork for the construction of concrete walls of a multi-storey building, more specifically, a plurality of aluminum unit formwork panels in the upper and lower two stages as much as the length of the wall In the wall formwork consisting of a pair of front and rear formwork, which is connected to the left and right sides, it is installed between the upper surface of the floor plywood fixed to the floor and the lower surface of the formwork to precisely install the front and rear formwork. The present invention relates to an aluminum cross-section with a downwardly open cross-sectional structure.

When constructing various buildings or structures, the concrete wall is formed by forming a mold such as a mold in which the interior space forms a wall, and then filling and curing concrete therein, and the above-mentioned 'frame' called 'forms' Is made by connecting a number of rectangular panels, commonly called unit formwork panels.

Thus, the formation of the wall begins with the installation of formwork, a form having an internal space for filling concrete by connecting a plurality of unit formwork panels.

Wood has been mainly used as a material of the conventional unit formwork panel for installing the formwork as above, but the formwork using the wood unit formwork panel is formed because the connection assembly between the unit formwork panels is made by nailing or tightening of the wire. It takes a lot of manpower and time for installation work, and also a lot of time and manpower for the demolition work of formwork after concrete curing.

In addition, the wooden formwork panel is reinforced with a rectangular wooden bar on the back of the plywood, but due to the nature of the wood it is easy to be deformed by the pressure of the concrete filled in the formwork, the larger the size of the wall, the more such a tendency to increase As a result, the outer surface of the wall often fails to form a flat surface.

Therefore, in order to prevent deformation of the wooden unit formwork panel as described above, there is an inconvenience of reinforcing the unit formwork panels with a separate reinforcing material before filling the formwork with concrete, and in the process of installing and removing the formwork. Since the unit formwork panel is often deformed or damaged, the number of times it can be repeatedly reused is extremely limited, which has a short lifespan.

In addition, the damaged timber formwork panels are mainly treated by incineration, but recently, the smoke generated during incineration acts as a pollution factor, which adds an additional cost for the treatment. .

Therefore, in order to solve the problems of the formwork wood unit formwork panel as described above, a metal unit formwork panel made of metal such as iron or aluminum alloy (hereinafter referred to as 'aluminum') has been developed and used in various construction sites. However, the scope and scale of their use are increasing rapidly.

Since the metal unit formwork panel has a greater rigidity than the wooden unit formwork panel, it is hardly deformed by concrete pressure compared to the wood panel form, so that the quality of the cured wall is excellent and the installation and dismantling work is easy, and durability is excellent. It is highly praised for its semi-permanent service life because it can be reused repeatedly.

However, the installation structure of the wall construction formwork using the metal unit formwork panels has the following problems.

1 is a partial perspective view and a cross-sectional view showing the installation structure of the wall construction formwork using a metal unit formwork panel.

As shown, when looking at the basis of the conventional wall construction formwork is installed using a metal unit formwork panel, a plurality of unit formwork panels are generally spaced apart from each other so that the front of the wall facing each other centered around the wall (W) On each floor surface on which the front and rear formwork (11) (11 '), which are erected facing each other, is placed, a wooden foundation (12) in which a plurality of wood boards or lumber is laminated is installed, and the front and rear formwork (11) ( A plurality of horizontal support (S1) and vertical support (S2) for fixing the formwork is fixed to the back of 11 '), the top of the back is provided with a corner wood (T) for fixing the slab construction plywood (V).

The wood base 12, which forms the basis of the formwork as described above, is installed at a constant height by appropriately stacking a plurality of woods such as plywood and lumber, so that it is difficult to flatten the side of the wood base that comes into close contact with the wall. In addition, since the height is also not easy to adjust uniformly, the horizontal straightness of the formwork placed on it, that is, the time for adjusting the height of the formwork is lengthened, thereby reducing workability of formwork installation.

In addition, because a large number of timbers are laminated, a gap is inevitably formed between layers or adjacent woods, and the gaps may cause concrete to soak up, which may result in undesired finishing of the wall surface. Wood attached to the back is difficult to reuse, or it is necessary to remove the attached concrete for reuse, which makes cumbersome preparation of timber based wood.

The present invention was devised to solve all the problems of the conventional wood foundation as described above, the horizontal straightness of the formwork by systemizing the upper surface is coupled to the formwork lower surface in the state installed on the upper surface of the wood plywood laminated in two or less layers The purpose of the present invention is to provide a foundation bar that can be precisely matched, iterative reuse of the floor plywood, and can shorten the installation time of the formwork foundation.

Figure 1 shows the installation structure of the formwork for conventional wall construction,

(A) is a partial perspective view,

(B) is a side view.

Figure 2 is a perspective view of one embodiment of the present invention.

Figure 3 is a partial coupling of the present invention one embodiment of the base rod and the bottom formwork.

4 is a conceptual diagram of dismantling of the lower formwork.

((Explanation of symbols for main part of drawing))

2. Foundation belt 4. Formwork

11. Front die 11 '. Rear formwork

12. Wood Foundation 20. Body

21. Outer rib 22. Lower rib

23. Inner Rib

The above object of the present invention is achieved by a bottom plywood fixed to the floor, and an aluminum foundation belt.

The bar foundation bar for formwork of the present invention is made of lightweight aluminum to improve handling properties when installing the formwork, and is fixed to the upper surface of the floor plywood fixed to the floor by stacking one or two sheets. .

At this time, the floor plywood that is laid on the floor to install the foundation bar according to the present invention is a plywood with a constant thickness, unlike the conventional wood base is made of a plurality of plywood and lumber, etc. are usually laminated in two or more layers when viewed from the side Only two sheets of lamination are used, and most preferably one piece of plywood is used.

In other words, the base bar of the present invention is interposed between the floor plywood and the bottom surface of the formwork, thereby improving the installation stability and precision of the formwork, and at the same time serves to increase the number of reuse of the plywood by protecting the floor plywood. .

The details of the purpose and technical constitution according to the present invention, including the effect thereof, will be clearly understood by the following description with reference to the drawings showing preferred embodiments of the present invention.

Figure 2 shows a perspective view of one embodiment of the present invention basic chord, Figure 3 shows an installation of the present invention one embodiment.

As shown, the basic bar 2 of the present invention is roughly shaped top plate 20A and two parallel parallel side plates formed by extending upright from both ends in the width direction of the top plate 20A, respectively. (20B) and a bar-shaped body (20) having a "c" shaped cross-section open downward, consisting of 20C; An outer rib 21 extending upright from the end of the one side plate 20C to the outside; A lower rib 22 continuously extending downward from an end of the other side plate 20B; An inner rib forming an a-shape with the lower rib 22 by being branched upright from the boundary of the other side plate 20B and the lower rib 22 to extend in the same direction as the outer rib 21. 23).

In the basic bar 2 of the present invention made as described above, the bottom surface of the inner ribs 23 is in close contact with the wall side upper surface s1 of the floor plywood V 'placed on the bottom surface by the length of the wall, and the wall W ) The inner surface of the lower rib 22 is in close contact with the side surface (s2) that is in close contact with the upper surface (s1) of the wall (W) side, and the upper surface (s1) of the wall (W) side where the bottom surface of the inner rib (23) is in close contact. The bottom surface of the outer rib 21 is installed in close contact with the upper surface (s1) spaced apart from.

In addition, a plurality of coupling holes (H) forming a row along the longitudinal direction of the upper plate (20A) is formed in the upper plate (20A) constituting the basic bar (2) of the present invention, the outer ribs 21 to the outside A plurality of through-hole h penetrating through the rib 21 is formed in the longitudinal direction of the outer rib 21, the groove (G) that crosses the upper surface in the longitudinal direction in the upper surface of the upper plate (20A) Is formed.

Basic design according to the present invention as described above, is fixed to the upper surface of the bottom plywood (V ') is fixed to the floor by a nail (N) or the like tightly fixed by the nail (N), Formwork (4) is installed upright on the top surface is the base bar (2) by a pin (P) penetrating through the coupling hole (H) formed on the bottom surface of each unit formwork panel constituting it and the top surface of the base bar Upright to the upper surface of the detachably fixed coupling.

The groove (G) formed on the upper surface of the present invention foundation bar (2) is to play an important role to shorten the dismantling time of the formwork, looking at the role as follows.

If the groove G is not formed on the upper surface of the present invention, the possibility of adhering foreign matter or the like is increased on the upper surface of the foundation, so that it is difficult to uniformly adjust the height of the formwork. The attachments need to be removed, thereby increasing the mold installation time, but when the groove G is formed, the groove is also formed on the bottom surface of the mold 4, thereby minimizing contact between the formwork 4 and the foundation bar 2. This solves the above problem and improves the horizontal straightness of the formwork.

G (4) + G (2) described in FIG. 3 means that the form | mold 4 and each groove | channel G of the foundation part 2 merged.

And, as shown in Figure 4, when dismantling the formwork (4) by the groove (G), the lower wall side edge of the unit formwork panel is easily inclined while entering the groove (G) of the base scaffold from the wall (W) Since it is separated, the disassembly of the formwork 4 can be easily made.

As discussed above, the formwork foundation for the formwork of the present invention can be systemized with the formwork to improve the straightness and finish state of the bottom of the wall, the repeatable re-use aluminum foundation platform serves to protect the plywood laid on the floor Therefore, the formwork foundation installation is easy and the wood for the foundation installation can be saved.

Claims (3)

In the formwork base installed on the bottom surface of the wall construction formwork consisting of a plurality of aluminum unit formwork panels, the roughly shaped upper plate 20A and the roughly extending shape of the upper plate 20A are respectively extended downwardly from the ends in the width direction of the upper plate 20A. A bar-shaped aluminum body 20 formed of two parallel side plates 20B and 20C having a downwardly open "C" cross section; An aluminum outer rib 21 extending upright from the end of the one side plate 20C to the outside; An aluminum lower rib 22 extending downward from an end of the other side plate 20B; Forming foundation for the formwork foundation, characterized in that consisting of the inner side of the inner side plate (20B) and the inner ribs (23) extended by branching up inward from the boundary of the lower rib (22). According to claim 1, wherein the top plate (20A) and the outer ribs 21 for the formwork base, characterized in that a plurality of coupling holes (H) and through holes (h) forming a row along each length direction Foundation chord. According to claim 1, wherein the upper surface of the top plate (20A), the foundation scaffold for formwork, characterized in that the groove (G) is formed to cross the upper surface in the longitudinal direction.