KR100348446B1 - Steel joint for casting concrete floor - Google Patents

Abstract

The present invention allows the concrete to be uniformly cast to a certain thickness throughout the floor construction to eliminate the vulnerable parts of the floor surface according to the thickness, and to further increase the strength by allowing the concrete to be completely filled without empty space during construction. In addition, the present invention relates to a steel joint for concrete floor plastering, which gives a control peg separation joint role so that the surface that holds it during the volume expansion and contraction of concrete after curing is applied.

Joint (A) of the present invention is a steel horizontal plate (1) placed on the base, vertical plate (2) formed integrally bent vertically upward from one end of the horizontal plate (1), on the horizontal plate (1) A plurality of through holes (3) bored in the longitudinal direction at a predetermined interval, a plurality of through holes (4) bored in the longitudinal direction at a predetermined interval on the vertical plate (2), the upper portion of the vertical plate (2) It is configured to include a synthetic resin horizontal (5) detachably fitted in the longitudinal direction.

In addition, an uneven part 6 serving as a control side separation joint is bent in the longitudinal direction at the center of the vertical plate 2.

Description

Steel joint for concrete floor plastering {STEEL JOINT FOR CASTING CONCRETE FLOOR}

The present invention relates to a steel joint for concrete floor plastering used for pouring concrete floors of large areas such as factories, warehouses, parking windows, hangars and the like.

In general, the concrete floor has a number of requirements, such as constant strength and flatness and no cracks due to long-term maintenance, which is used to meet the above requirements in placing concrete floors It is a joint.

Concrete floor plastering joints are installed at regular intervals on the foundation before placing the floor concrete. These joints induce cracks due to shrinkage and expansion of concrete during construction, and make reinforcement work accurate and easy as designed. It is possible to make a hypothesis, and in particular, to secure flatness, which is the life of floor concrete.

In addition, the joint for floor plastering requires no additional work on the formwork installation, disassembly, and jointing, so that it can be carried out continuously and can be handled in case of accidental break. It is not necessary, it serves as an integral joint with concrete, and acts as a guide rail when using a surface vibrator to ensure flatness, which is the life of floor concrete.

Conventional floor plastering joints include concrete joints presented in Korean Utility Model Publication No. 95-30611 and steel joints disclosed in Korean Patent Application Publication No. 94-700595, but the concrete joints are difficult to adjust the level and Problems such as difficulty in carrying and working have been pointed out.

In addition, since the steel joint is structurally formed on both sidewalls, the thickness of the concrete that is cast on both sides of the joint during the floor construction is thin, and thus the strength of the site is weak, so that the possibility of cracking due to the inclined surface cannot be excluded. In addition, there is a weak problem that the concrete is not completely filled into the space formed between the two side walls of the joint when the bottom concrete is poured.

In addition, the conventional steel joint has a problem that the surface holding it during the volume expansion and contraction of concrete after curing is formed because both sides of the structurally inclined side plate is formed. That is, the conventional steel joint has a problem that can not perform the role of the control side separation joint because the vertical movement of the concrete floor after the curing occurs in the joint portion.

An object of the present invention is to invent the conventional drawbacks as described above, to ensure that the concrete is uniformly cast to a uniform thickness as a whole when the floor construction to eliminate the weak part of the floor surface according to the thickness, without empty space during construction It is to provide a concrete joint for the concrete floor plastering to further increase the strength by allowing the concrete to be completely filled.

Still another object of the present invention is to provide a steel joint for concrete floor plastering by applying a role of the control side separation joint so that the surface that holds it during the volume expansion and contraction of concrete after curing is applied.

In order to achieve the above object, the present invention is integrally bent to form a vertical plate that is bent upward on one end of the horizontal steel plate placed on the base, and the plurality of through holes in the longitudinal direction at regular intervals on the horizontal plate and the vertical plate Perforations respectively, and the upper portion of the vertical plate is combined by detachably inserting the synthetic resin horizontal strip in the longitudinal direction.

In addition, the present invention is to form a concave-convex portion in the longitudinal direction in the central portion of the vertical plate to achieve the above object.

1 is a perspective view showing an embodiment of the present invention.

2 is a longitudinal sectional view of the present invention;

Figure 3 is a construction state of the concrete floor using the present invention.

4 to 10 are perspective views showing various other embodiments of the present invention.

<Code Description of Main Parts of Drawing>

A: Joint 1: Horizontal Plate

2: vertical plate 3: through hole

4 through hole 5 horizontal

6: uneven part 7: auxiliary horizontal plate

8: through hole 10: level adjusting screw

Hereinafter, the technical configuration of the present invention according to the accompanying drawings in detail.

Steel joint A for concrete floor plastering according to an embodiment of the present invention, as shown in Figures 1 and 2, the steel horizontal plate (1) placed on the base, the upper end at one end of the horizontal plate (1) Vertical plates 2 integrally bent vertically to each other, a plurality of through-holes 3 perforated in the longitudinal direction at a predetermined interval on the horizontal plate 1, and at a predetermined interval on the vertical plate 2 It comprises a plurality of through holes (4) perforated in the longitudinal direction, the synthetic resin horizontal bar (5) detachably fitted in the longitudinal direction to the upper portion of the vertical plate (2) is a basic feature of the technical configuration .

Here, the horizontal plate (1) and the vertical plate (2), which are integrally bent steel materials, are formed with an appropriate width and height, and are manufactured to have an arbitrary length.

The level adjusting screw 10 is optionally screwed into the through hole 3 drilled in the horizontal plate 1, and through the through hole 3, hard concrete flows downward. To fill in the empty spaces.

Sheathing force reinforcement (dowel bar) or reinforcing bar is inserted into the through hole (4) perforated in the vertical plate (2), and through the through hole (4), the hardened concrete flows in to fill the empty space give.

The horizontal bar (5) is formed of a synthetic resin such as PVC or polyethylene, it is not rusted and elastic, absorbing power and some strength is required due to expansion, and if necessary, can be removed after construction because of the vertical plate ( 2) is detachably fitted and combined.

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

Joint A according to another embodiment of the present invention is characterized in that the concave-convex portion 6 is bent in the longitudinal direction in the central portion of the vertical plate (2) as shown in FIG.

Here, the concave-convex portion 6 formed on the vertical plate 2 serves as a control lateral separation joint that allows the surface to hold it during volume expansion and contraction of concrete after curing. That is, by the uneven part 6, the up, down, left and right movements of the concrete floor are not generated in the joint A part.

Joint (A) according to another embodiment of the present invention, as shown in Fig. 5 and 6, the auxiliary horizontal plate 7 corresponding to the horizontal plate (1) is welded to the lower end of one side of the vertical plate (2) It is bonded, and the auxiliary horizontal plate 7 is characterized in that a plurality of through holes 8 in the longitudinal direction at a predetermined interval.

Here, the auxiliary horizontal plate 7 can maximize the work efficiency because it allows the installation of the joint (A) even more stable during construction.

Joint (A) according to another embodiment of the present invention, as shown in Figures 7 and 8, the horizontal plate (1), the vertical plate (2) formed in one piece is composed of two sets of two vertical plates ( 2) is bonded in a corresponding state.

Here, since the vertical plate (2) is overlapped in two layers, the strength of the joint (A) is further reinforced.

Joint (A) according to another embodiment of the present invention, as shown in Figure 9 and 10, the horizontal plate 1, the vertical plate 2 is formed integrally bent is characterized in that the semi-circular bending.

Here, the joint (A), the horizontal plate (1), the vertical plate (2) is bent in a semicircular shape is used to be connected in a cylindrical shape in the state that the two correspond to the pair as shown in Figs. The semicircular joint A is constructed, in particular on the foundation on which the column is mounted. At this time, since the concrete is poured in the state in which the lower portion of the beam for the pillar is embedded into the joint (A) shown in Fig. 9 and 10 during construction, such a joint (A) to prevent the occurrence of cracks in particular in the column portion.

9 and 10 illustrate a state in which the joint A is bent in a semicircular shape, but it may be found that the joint A may be bent in a circular shape if necessary.

Steel joint (A) of the present invention configured as described above is also buried during construction of the concrete floor as shown in FIG. 3, and the method of constructing the concrete floor using the joint (A) of the present invention is as follows.

First, the height of the joint A is formed by using the level adjusting screw 10 in a state in which the joint A is formed on a foundation to form a line at regular intervals so that the guide rail functions as a guideline for securing flatness. After adjustment, fix the installed joint (A) with mortar.

Next, when the joint (A) is installed, the shear force reinforcement or reinforcing bars are correctly installed as designed, and when the construction work is completed, the concrete is poured to the height of the upper end of the joint (A). At this time, the concrete (A) itself is installed in accordance with the floor level (FL) when the leveling work while placing the beam of a certain height between the horizontal bar (5) and the horizontal bar (5) while moving concrete The level between the horizontal stage 5 and the horizontal stage 5 is constant to ensure the flatness which is the life of the floor concrete.

Joint (A) of the present invention buried during the construction of the floor concrete as described above is structurally vulnerable to the floor surface according to the thickness because the concrete is uniformly cast to the both sides of the joint (A) by the vertical plate (2) as a whole There is an advantage to eliminate the site.

In addition, the joint (A) of the present invention structurally compared to the prior art because there is no space in the interior itself, the concrete hardened by the through holes (3) (4) easily flows into the narrow gap, so that the concrete is completely completely without empty space There is an advantage that can be charged.

In addition, since the concave-convex portion 6 is bent at the center of the vertical plate 2, the joint A of the present invention does not generate vertical, left, right, or left movements due to the contraction and expansion of the concrete after curing. There is an advantage that can fully transmit the shear force.

As described above, the present invention does not have a fragile part of the floor surface according to the thickness because the concrete is uniformly poured with a uniform thickness as a whole, and the strength is further increased because the concrete is completely filled without empty space during construction. In addition, it is a very useful invention that the surface that holds it during the volume expansion and contraction of concrete after curing is given because it is given the role of control peg separation joint.

Claims (5)

Steel horizontal plate (1) placed on the base, vertical plate (2) integrally bent vertically upward from one end of the horizontal plate (1), perforated in the longitudinal direction at a predetermined interval on the horizontal plate (1) A plurality of through holes (3), a plurality of through holes (4) perforated in the longitudinal direction at regular intervals on the vertical plate (2), is detachably fitted in the longitudinal direction on top of the vertical plate (2) Steel flooring for concrete flooring comprising a combined plastic leveling rod (5). The steel joint for concrete floor plastering according to claim 1, wherein the uneven portion (6) is bent in the longitudinal direction at the center of the vertical plate (2). The auxiliary horizontal plate 7 corresponding to the horizontal plate 1 is joined to the lower end of one side of the vertical plate 2, and the auxiliary horizontal plate 7 is spaced apart from each other. Steel joint for concrete floor plastering, characterized in that a plurality of through holes (8) in the longitudinal direction. According to claim 1 or 2, wherein the horizontal plate (1), the vertical plate (2) is formed integrally bent two pieces, characterized in that the two vertical plates (2) are joined in a corresponding state Steel joints for concrete floor plastering. The steel joint for concrete floor plastering according to claim 1 or 2, wherein the integrally bent horizontal plate (1) and the vertical plate (2) are bent in a semicircle.