KR20040076644A - Steel-concrete reinforcing material and method for building steel-concrete structure including such - Google Patents

Abstract

PURPOSE: A reinforced concrete stiffener is provided to simplify a work in a construction site, to decrease the defects on a reinforced concrete structure, to shorten a period of construction and to cut down the construction expenses. CONSTITUTION: The reinforced concrete stiffener(10) contains: a rail(12) formed in the shape of a strip extended in one way and provided with through holes(12,13) to extend the contact surface with concrete; and a stud(20) composed of a body(22), a joint(24) formed on the lower end of the body(22) and fixed to the upper side of the rail(12) and a head(26) formed on the upper end of the body(22) to be wider than the body(22), and projected perpendicularly to the extended direction of the rail(12).

Description

Steel-concrete reinforcing material and method for building steel-concrete structure including such}

The present invention relates to a reinforced concrete reinforcement and a method of building a reinforced concrete structure comprising the same, and more particularly, reinforced concrete reinforcement to reduce the amount of work at the construction site to enable more economical construction, and reinforced concrete comprising the same It relates to the construction method of the structure.

Reinforced concrete structure refers to a structure such as slab or wall of reinforced concrete structure, and is a structure in which reinforcing steel is arranged inside the concrete to reinforce the strength of concrete, and is widely adopted in modern architecture. 1 is a partial cutaway perspective view of an example of a conventional reinforced concrete structure is shown.

The illustrated reinforced concrete structure is a slab (sla b, 1) serving as a floor or a ceiling of a building, and a concrete layer (2) cured after concrete pouring, and the concrete layer (2) to reinforce the strength of the concrete layer (2). ) Are provided with reinforcing bars (3, 4, 6) disposed inside. The reinforcing bars (3, 4, 6) is disposed before the concrete in the building process, the upper and lower cast iron bars (3, 4) extending in a direction parallel to the extending direction of the concrete layer (2), It consists of a shear reinforcing reinforcing bar (6) winding a pair of upper and lower each of the upper and lower cast bar (3, 4) in a rectangular shape. The shear reinforcing bar 6 serves to reinforce the strength of the concrete layer 2 together with the main reinforcing bars 3 and 4.

Looking at the operation of installing the shear reinforcing bar 6 during the construction process, first, the reinforcing bar 6 is made by bending the reinforcing bar in a substantially rectangular ring shape. Next, the shear reinforcing bars 6 are appropriately arranged in the longitudinal direction of the main bars 3 and 4 so that the upper and lower pairs of upper and lower main bars 3 and 4 are located at four corners of the square ring. Next, the shear reinforcing bars 6 are tightened to closely contact the cast iron bars 3 and 4. However, all of these tasks were performed at the construction site, and also required many skilled construction workers. This caused an increase in construction cost and an extension of the construction period, and also had a problem that poor construction workers could result in defective reinforced concrete structures.

The present invention is to solve the above problems, it is an object of the present invention to provide a reinforced concrete reinforcement that can reduce the construction cost of construction workers in the construction site, which can lead to a reduction in construction costs and construction period.

In addition, because it includes the above-mentioned reinforced concrete reinforcement, it is another object to provide a method of building a reinforced concrete structure that can reduce the construction cost and shorten the construction period, and can reduce the possibility of failure.

1 is a partial cutaway perspective view of an example of a conventional reinforced concrete structure.

Figure 2 is a front view showing an embodiment of the reinforced concrete reinforcement according to the present invention.

3 is a perspective view illustrating an example of a state in which the reinforced concrete reinforcement shown in FIG. 2 is disposed together with the reinforcing bars.

4 is a cross-sectional view showing an example of a state in which the reinforced concrete reinforcement shown in FIG. 2 is disposed in the formwork.

FIG. 5 is a cross-sectional view illustrating an example of a state in which reinforcing bars are disposed in the formwork shown in FIG. 4 and concrete is poured. FIG.

6 is a perspective view illustrating another example of a state in which the reinforced concrete reinforcement shown in FIG. 2 is disposed together with the reinforcing bars.

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

10 ... reinforced concrete stiffeners 12 ... rail

13, 14 ... through 20 ... stud

30 ... pin 31 ... spacer

35 ... formwork 38 ... concrete supply hose

40, 41, 42, 50, 51, 52, 60 ... rebar

In order to achieve the above object, the reinforced concrete reinforcement according to the present invention, a strip (rail) of a strip shape extending in one direction in a form space for placing concrete; And

A rod-shaped body portion, a coupling portion provided at one end of the body portion and fixedly coupled to the rail, and a head portion provided at the other end of the body portion and having a larger cross-sectional area than the body portion, and extending the rail. And a plurality of studs protruding in one direction perpendicular to the direction and spaced apart from each other along the rail.

Preferably, the coupling portion of the stud may be welded fixed to the rail.

Preferably, the rail may be formed with a through hole for expanding the contact area with the concrete.

Preferably, the head portion of the stud may have a flat surface wider than the area of the cross section of the body portion, and an inclined surface that is inclined from the edge of the flat surface to the other end of the body portion.

Preferably, a spiral slit may be formed on the outer surface of the body portion of the stud to enlarge the contact area with the concrete.

The construction method of the reinforced concrete structure according to the present invention includes the steps of manufacturing a formwork for providing a concrete placing space;

A strip-shaped rail extending in one direction, and

A rod-shaped trunk portion, a coupling portion provided at one end of the trunk portion and fixedly coupled to the rail, and a head portion provided at the other end of the trunk portion and having a larger cross-sectional area than the trunk portion, and extending the rail. Preparing a reinforced concrete reinforcement protruding in one direction perpendicular to the direction and having a plurality of studs spaced apart from each other along the rail;

Disposing the reinforcing bar and the reinforced concrete reinforcement in the form space such that the rebar crosses the space between the studs of the reinforced concrete reinforcement; And

And placing concrete in the formwork space in which the reinforcing bars and the reinforced concrete reinforcement are disposed.

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

Figure 2 is a front view showing an embodiment of the reinforced concrete reinforcement according to the present invention, Figure 3 is a perspective view showing an example of a state where the reinforced concrete reinforcement shown in Figure 2 is disposed together with the rebar.

Referring to FIG. 2, the reinforced concrete reinforcement 10 of the present invention includes a rail 12 and a stud 20 coupled to the rail 12. The reinforced concrete reinforcement 10 is preferably made of steel in the same manner as the steel in terms of manufacturing cost, strength, etc., but is not necessarily limited to this, and may be made of a composite material.

The rail 12 has a strip shape extending in one direction, the length of which can be made long or short to fit the installation space. The rails 12 have through-holes 12 and 13 penetrated in the thickness direction in a line along the extension direction of the rail 12. The through holes 12 and 13 are for expanding the contact area with the concrete to be poured. In the present preferred embodiment, a large diameter through-hole 13 having a relatively large inner diameter and a small diameter through-hole 14 having a relatively small inner diameter are alternately arranged, and the small diameter through-hole 14 is a pair of rails crossing each other ( 12) is a pin through hole for connecting the pins 30 (see FIG. 3).

The stud 20 has a rod-shaped body portion 22, a coupling portion 24 provided at a lower end of the body portion 22 and fixedly coupled to an upper surface of the rail 12, and the body portion 22. It is provided at the upper end of the head portion 26 having a wider cross-sectional area than the body portion 22 is configured. The stud 20 protrudes vertically upwardly from the extending direction of the rail 12, and a plurality of studs 20 are spaced apart from each other along the rail 12.

The body portion 22 has a spiral slit 22a formed on its outer surface. The coupling part 24 is preferably welded and fixed to the rail 12 for strong coupling, and has a flat welding surface 24a wider than the area of the cross section of the body part 22 to widen the welding area. You can do that. In addition, the engaging portion 24 is provided with an inclined surface (24b) that extends to the lower end of the body portion 22 inclined at the edge of the welding surface (24a). Similar to the shape of the coupling portion 24, the head portion 26 also has a flat surface 26a wider than the area of the cross section of the body portion 22, and the body portion is inclined at the edge of the flat surface 26a. It is provided with the inclined surface 26b which continues to the upper end of the 22. Therefore, the stud 20 of the reinforced concrete reinforcement 10 according to the present embodiment has a vertical symmetrical shape. The reinforced concrete reinforcement 10 described above does not need to be made at the building site, but may be transported and installed at the building site after being manufactured at the factory.

Reinforced concrete reinforcement 10 is disposed in a form (not shown) space for providing a concrete placing space, the reinforcing bars 40, 50 cross the space between the studs 20 of the reinforced concrete reinforcement (10) Installed to shout. Referring to the example shown in FIG. 3, the pair of reinforced concrete stiffeners 10 are arranged such that the head portion 26 of the stud 20 faces upward, that is, in the positive direction of the Y axis. . In addition, one rail 12 extends in the X-axis direction, which is one direction on the horizontal plane, so that the pair of rails 12 are perpendicular to each other, and the other rail 12 is perpendicular to the X-axis direction on the horizontal plane. It extends in the Z-axis direction. The pair of rails 12 which cross in this way are connected to each other by pins 30 penetrating the small diameter through holes 14 of both. Reinforcing bars 40 and 50 are arranged above the rails 12. In detail, the rebar 50 extending in the Z-axis direction is disposed to cross the space between the studs 20 coupled to the rail 12 extending in the X-axis direction, and the reinforcement extending in the X-axis direction. Reinforcing bar 40 is disposed to cross the space between the studs 20 coupled to the rail 12 extending in the Z-axis direction. Therefore, the rebar 40 extending in the X-axis direction and the rebar 50 extending in the Z-axis direction are perpendicular to each other. Unexplained reference numeral 31 is a spacer for supporting the rail 12 spaced apart from the bottom of the formwork (not shown) by a predetermined distance.

4 and 5 are views showing an example of a method of building a reinforced concrete structure according to the present invention, Figure 4 is a cross-sectional view showing an example of a state in which the reinforced concrete reinforcement shown in Figure 2 is disposed inside the formwork 5 is a cross-sectional view illustrating an example of a state in which reinforcing bars are disposed in a formwork shown in FIG. 4 and concrete is poured.

Specifically, the reinforced concrete structure that is built by the building method shown in Figures 4 and 5, it is a slab (slab) supported by the pillar and the column, in order to build the first column reinforcement reinforcement (60) up and down After arranging to extend, the formwork 35 is installed to provide a concrete pouring space. For convenience of description, the interior space of the formwork 35 to be poured and cured as concrete will be referred to as pillar space 36, and the interior space of formwork 35 to be slab will be referred to as slab space 37. On the other hand, the column reinforcing reinforcing bar 60 and the formwork 35 installation process is known to those skilled in the art to which the present invention belongs to the detailed description thereof will be omitted.

After the formwork 35 is installed, a plurality of reinforced concrete reinforcement 10 is disposed in the slab space 37, as shown in FIG. When the spacer 31 is disposed on the bottom surface of the formwork 35 and the reinforced concrete reinforcement materials 10 are disposed so that the rail 12 of the reinforced concrete reinforcement material 10 is placed on the spacer 31, The bottom surface of the rail 12 and the formwork 35 is spaced apart so that the stud 20 does not fall easily, and thus the reinforced concrete reinforcement 10 may be stably disposed. In addition, it is preferable to connect the bottom surface of the formwork 35 and the rail 12 using a nail or the like so that the reinforced concrete reinforcement 10 can be more stably disposed. On the other hand, the plurality of reinforced concrete reinforcement 10 may be disposed to extend in the X-axis and Z-axis direction. 4 and 5 are not shown in the reinforced concrete reinforcement extending in the Z-axis direction. On the other hand, the reinforced concrete reinforcement 10 can not be blocked by extending to the column reinforcement (60) is arranged so that one end of the rail 12 adjacent to the column reinforcement (60), the connection portion of the completed column and slab To increase the shear strength of

After the reinforced concrete reinforcement 10 is disposed, the slab reinforcing bars 41, 42, 51, and 52 are disposed in the X-axis direction and the Z-axis direction as shown in FIG. 5. The order of placement is to start from the reinforcing bar located in the lower order to the rebar located in the upper order. That is, the X-axis lower reinforcing bar 42 is placed first, the Z-axis lower reinforcing bar 52 is secondly arranged, and the X-axis direction upper reinforcing bar 41 is arranged third, and the Z-axis Finally, the direction upper reinforcing bar 51 is disposed. In this way, the Z-axis slab reinforcement (51, 52) are positioned to cross the space between the studs 20 coupled to the rail 12 extending in the X-axis direction, in the X-axis direction Curvature and positional deviation of are suppressed. Similarly, the X-axis slab reinforcing bars 41 and 42 are also positioned to cross the space between the studs (not shown) coupled to the rail (not shown) extending in the Z-axis direction. The warpage and the positional deviation of the furnace are suppressed. As a result, the slab reinforcing bars 41, 42, 51, and 52 may be uniformly distributed without being agglomerated in the slab space 37. On the other hand, although not shown, the slab reinforcement (41, 42, 51, 52) is preferably supported by a suitable support means to be located at a constant height from the bottom of the formwork (35). In addition, the X- and Z-axis slab reinforcing bars (41, 42, 51, 52) are arranged across the column reinforcement (60) to reinforce the shear strength of the connection between the completed column and the slab It is desirable to be.

The process of arranging the reinforced concrete reinforcement 10 and the slab reinforcing bars 41, 42, 51, and 52 described above is simpler than the process of installing the main reinforcing bars 3 and 4 and the shear reinforcing bar 6 described with reference to FIG. 1. It can be easily carried out by relatively less skilled construction workers, and the work time can be relatively shortened with the same manpower.

After the slab reinforcing bar (41, 42, 51, 52) arrangement process, concrete is poured into the column space 36 and the slab space (37). It is desirable to pour the studs 20 of reinforced concrete reinforcement to a height 39, shown in phantom, so that the studs 20 of the reinforced concrete reinforcement are completely submerged in concrete. Curing and curing the poured concrete as described above, after removing the formwork 35, and other finishing work to complete the pillars and slabs. Unexplained reference numeral 38 denotes a concrete hose for supplying concrete.

The shear strength of the finished reinforced concrete structure is known to be related to the distribution of reinforcing bars 41, 42, 51, 52, 60 and the reinforced concrete reinforcement 10, and the degree of adhesion of the reinforced concrete to these concretes. As described with reference to FIG. 5, the slab reinforcing bars 41, 42, 51, and 52 may be uniformly distributed within the slab space 37 due to the reinforced concrete reinforcing material 10. Also, as described with reference to the preferred embodiment shown in FIG. 2, the through holes 13 and 14 are formed in the rail 12 of the reinforced concrete reinforcement 10, and the trunk portion 22 of the stud 20 is formed. If the spiral slit 22a is formed in the head portion 26 and the flat surface 2a and the inclined surface 26b are provided in the head portion 26, the area where the reinforced concrete reinforcement 10 is in close contact with the concrete can be enlarged. In addition, the reinforced concrete reinforcement 10 may be suppressed from falling down before concrete is cured. For the same reason as above, the completed reinforced concrete structure can have sufficient shear strength to ensure safety without installing the shear reinforcing bar 6 as shown in FIG.

6 illustrates another example of the state in which the reinforced concrete reinforcement shown in FIG. 2 is disposed together with the reinforcing bars.

Referring to the drawings, the reinforced concrete reinforcement 10 may be installed such that the head portion 26 of the stud 20 is supported by the bottom surface of the formwork (not shown), as shown in FIG. 3. In order to install in this way, unlike the description with reference to FIGS. 4 and 5, the reinforcing bars 40, 50 are first disposed so as to extend in the X-axis and Z-axis directions, and the reinforcement concrete reinforcing material 10 is disposed at its stud ( The head part 26 of 20) can be installed so that it may be Y-axis negative direction, ie, downward.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. For example, the reinforced concrete reinforcement of the present invention includes a case where the coupling portion of the stud does not have a flat welding surface, as shown in FIG. 2. In addition, the reinforced concrete structure construction method of the present invention, unlike shown in Figures 4 and 5 also includes a method for building the wall. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

The reinforced concrete reinforcement of the present invention described above and the reinforced concrete structure building method including the same have the following effects.

First, it is not necessary to install the shear reinforcing bars in the construction site, simply place the finished reinforced concrete reinforcement, which simplifies the work on the construction site, thereby reducing the possibility of defects of the reinforced concrete structure and the construction period. This can be shortened.

Second, since the work on the construction site is simple, it is possible to work by construction workers who are relatively less skilled than in the prior art, which can bring down the construction cost.

Claims (6)

A strip-shaped rail extending in one direction in a form space for placing concrete; And A rod-shaped body portion, a coupling portion provided at one end of the body portion and fixedly coupled to the rail, and a head portion provided at the other end of the body portion and having a larger cross-sectional area than the body portion, and extending the rail. And a plurality of studs protruding in one direction perpendicular to the direction and spaced apart from each other along the rail. According to claim 1, Reinforced concrete reinforcement, characterized in that the coupling portion of the stud is welded to the rail. According to claim 1, Reinforced concrete reinforcement, characterized in that the rail is formed with a through hole for expanding the contact area with the concrete. According to claim 1, Reinforced concrete reinforcement, characterized in that the head portion of the stud has a flat surface wider than the area of the cross section of the body portion, and an inclined surface extending to the other end inclined from the edge of the flat surface. According to claim 1, Reinforced concrete reinforcement, characterized in that the outer surface of the body portion of the stud is formed with a spiral slit (slit) for expanding the contact area with the concrete. Manufacturing a formwork for preparing a concrete pouring space; A strip-shaped rail extending in one direction, and A rod-shaped body portion, a coupling portion provided at one end of the body portion and fixedly coupled to the rail, and a head portion provided at the other end of the body portion and having a larger cross-sectional area than the body portion, and extending the rail. Preparing a reinforced concrete reinforcement protruding in one direction perpendicular to the direction and having a plurality of studs spaced apart from each other along the rail; Disposing the reinforcing bars and the reinforced concrete reinforcement in the form space such that the rebar crosses the space between the studs of the reinforced concrete reinforcement; And And placing concrete in the formwork space in which the rebar and the reinforced concrete reinforcement are disposed.