KR102089574B1 - Method for constructing concrete slab structure - Google Patents

Abstract

The present invention relates to a construction method of a slab structure and, more specifically, to a construction method of a slab structure including a steel plate and a spacer. The present invention provides the construction method of a slab structure, which can prominently reduce construction periods and construction costs.

Description

Construction method of slab structure {METHOD FOR CONSTRUCTING CONCRETE SLAB STRUCTURE}

The present invention relates to a construction method of a slab structure, and more particularly, to a construction method of a slab structure including a steel plate and a spacer.

In a building, a slab is a horizontal member that is essential for people to live and live. The slab between the layers forms the bottom surface of the upper layer and the ceiling of the lower layer. In general, formwork is required when pouring concrete for building reinforced concrete structures, which is commonly used in construction or civil structures. need.

Referring to Figures 1a and 1b, in the conventional formwork, a plurality of yokes arranged in a fixed direction on the copper bar after arranging and installing the joists on the upper surface of the yoke at right angles, and then the formwork by joining plywood on the joists Being completed. Concrete is poured on the top surface.

The formwork installed in this way must be dismantled after curing the concrete. In this process, it takes a lot of manpower, and there has been a problem of waste of materials and environmental problems due to the generation of waste materials, and the cost of disposal.

In order to prevent such a problem, an integrated deck plate has been developed by pre-assembling the reinforcing bar in the form of a truss as a substitute for formwork, thereby reducing the reinforcement of the reinforcing bar and improving the workability and shortening the air by reducing labor.

However, even when using a reinforced truss type deck plate, additional improvements still exist, such as reducing the slab self-weight and reducing the inter-layer noise between the upper and lower layers of the slab. Accordingly, there is a need to develop a method for constructing a slab structure having a simple construction and high economical efficiency.

Registered Patent Publication No. 10-1171974 (Registration date: 2012.08.01)

The present invention has been made to solve the above-mentioned problems,

An object of the present invention is to provide a construction method of a slab structure that is easy to construct.

In addition, the present invention has another object to provide a construction method of a slab structure that can significantly reduce the construction period and construction cost.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned are clearly understood by a person having ordinary knowledge in the technical field to which the present invention belongs (hereinafter referred to as a 'normal engineer') from the following description. It could be.

To achieve the object of the present invention as described above, and to perform the characteristic functions of the present invention described later, the features of the present invention are as follows.

The construction method of the slab structure according to the present invention comprises the steps of disposing a steel plate including a plurality of protrusions including vertical protrusions projecting from a surface and horizontal protrusions projecting horizontally on both sides of the vertical protrusions; Reinforcing a lower main root between the protrusions of the steel plate; Reinforcing the lower back muscles to be orthogonal to the lower main roots; Placing a spacer complex including a spacer on the lower back muscle; Reinforcing an upper muscle including an upper main muscle and an upper back muscle that is orthogonal to the upper main muscle on the spacer complex; Installing a fixing device mounted on the protrusion and coupled to the upper muscle; And pouring concrete.

According to an embodiment of the present invention, the step of bundling the orthogonal point of the lower main and lower back muscles with a wire; Or tying the points at which the upper main and upper back muscles are orthogonal to each other with an iron wire; It further includes any one of.

According to an embodiment of the present invention, the spacer composite further includes a support, and the support includes: first and second lower rods spaced apart in parallel; A plurality of spacers disposed between the first and second lower rods to be in contact with each of the first lower rod and the second lower rod; An upper rod disposed on the plurality of spacers; And a plurality of connecting members connecting the first lower rod, the upper rod, and the second lower rod, and bent to surround both sides of each spacer among the plurality of spacers.

According to one embodiment of the present invention, the upper rod contacts the upper plinth to support the upper plinth.

According to an embodiment of the present invention, further comprising a spacer composite forming step of forming a spacer composite including a plurality of spacers and a support body integrally forming the plurality of spacers.

Preferably, the step of forming the spacer composite comprises disposing a pair of lower rods spaced in parallel; Arranging a plurality of spacers spaced apart at a predetermined interval to contact the lower rod between the lower rods; Placing an upper rod parallel to the lower rod on the upper portion of the spacer; And joining the connecting member to sequentially couple to one of the pair of lower rods, the upper rod and the other of the pair of lower rods so as to surround the spacer.

According to an embodiment of the present invention, the fixing device, an extension; A coupling portion formed on one side of the extension portion and formed to be coupled with the upper muscle; And a mounting portion formed on the other side of the extension portion and formed to be mounted on the horizontal protrusion, wherein the mounting portion extends from the other side of the extension portion by bending at a predetermined angle with respect to the longitudinal direction of the extension portion. part; And a first fitting portion formed curved at a predetermined angle from the first inclined portion and mounted on a lower surface of the horizontal protrusion.

The construction method of the slab structure according to the present invention provides an effect of easy construction.

In addition, according to the present invention, there is provided a construction method of a slab structure that can significantly reduce the construction period and construction cost.

The effects of the present invention are not limited to those described above, and other effects not mentioned will be apparent to those skilled in the art from the following description.

1A shows a plan view in cross section of a slab constructed using conventional plywood formwork,
1B shows the front view of FIG. 1A,
Figure 2 shows the steel plate forming step of the construction method of the slab structure of the present invention,
Figure 3 shows the lower roots reinforcement step of the construction method of the slab structure of the present invention,
Figure 4 shows the spacer composite installation step of the construction method of the slab structure of the present invention,
5A to 5D show a spacer composite formation step of a method for constructing a slab structure of the present invention, showing a plan view,
Figure 6 shows the upper muscle reinforcement step of the construction method of the slab structure of the present invention,
7 shows a step of mounting the fixing device of the construction method of the slab structure of the present invention,
8 shows a state in which the fixing device of the construction method of the slab structure of the present invention is mounted,
9a and 9b show a fixing device according to an embodiment of the present invention,
10 shows a process in which the fixing device of FIG. 9A is mounted on a slab structure,
FIG. 11 shows a state in which the fixing device of FIG. 9A is mounted on a slab structure,
12a and 12b show a fixing device according to another embodiment of the present invention,
13 shows a process in which the fixing device of FIG. 12 is mounted to the slab structure,
14 shows a state in which the fixing device of FIG. 12A is mounted on a slab structure,
15a and 15b show a fixing device according to another embodiment of the present invention,
16A shows an embodiment of the fixing device of FIG. 15A as viewed from below,
16B shows another embodiment of the fixing device of FIG. 15A as viewed from below,
16C shows a perspective view of the embodiment of FIG. 16B,
Figure 17 shows the process of mounting the fixing device of Figure 15a to the slab structure,
FIG. 18 shows a state in which the fixing device of FIG. 15A is mounted on a slab structure,
19A shows a plane cross-sectional view of a slab structure constructed according to the construction method of the slab structure of the present invention,
19B shows a front view of FIG. 19A.

The specific structure or functional descriptions presented in the embodiments of the present invention are exemplified for the purpose of explaining the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention may be implemented in various forms. In addition, it should not be construed as being limited to the embodiments described herein, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Meanwhile, in the present invention, terms such as first and / or second may be used to describe various components, but the components are not limited to the terms. The above terms are only for the purpose of distinguishing one component from other components, for example, without departing from the scope of rights according to the concept of the present invention, the first component may be referred to as the second component, Similarly, the second component may also be referred to as the first component.

When a component is said to be "connected" or "connected" to another component, it should be understood that other components may be directly connected or connected to the other component, but may be present in the middle. something to do. On the other hand, when a component is referred to as being “directly connected” to or “directly in contact with” another component, it should be understood that no other component exists in the middle. Other expressions for describing the relationship between the components, such as "between" and "immediately between" or "adjacent to" and "directly adjacent to", should also be interpreted.

Throughout the specification, the same reference numbers indicate the same components. Meanwhile, the terminology used herein is for describing the embodiments and is not intended to limit the present invention. In the present specification, the singular form also includes the plural form unless otherwise specified in the phrase. As used herein, "comprises" and / or "comprising" refers to the presence of one or more other components, steps, operations and / or elements in which the mentioned component, step, operation and / or element is present. Or do not exclude additions.

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

As shown in Figure 2, the construction method of the slab structure according to the present invention includes the step of forming a protrusion (P) on the steel plate (D). The steel plate (D) is configured to bend the iron plate to be spaced apart from the iron plate by a predetermined distance to form a protrusion (P) from the iron plate. It may be configured to include a vertical protrusion (VP) and a vertical protrusion (HP) extending substantially horizontally on both sides of the vertical protrusion (VP), respectively, which protrude vertically from the steel plate (D).

Since the steel plate D provided as described above performs a tensile rebar function, it has an advantage of reducing the tensile rebar. More specifically, the high-strength rebar with a yield strength of 400 MPa performs the function of a high-tensile deformed bar (HD) or high- Yield Deformed Bar (HD) rebar 10 mm to 16 mm.

In addition, since the steel plate (D) is capable of factory production, the quality is consistent and excellent, and the production speed is fast. That is, since it can be produced as a modular product, it has the advantage of reducing production costs. The length of such a steel plate (D) may be manufactured to have 3m to 15m.

Further, the steel plate D is excellent in economic efficiency. More specifically, since the construction is simple and the construction speed is high, it is possible to reduce labor, and since it does not require a reinforcing bar, material costs can be reduced. According to the present invention, the cost can be reduced by 50 to 70 percent compared to the existing plywood formwork (FIGS. 1A to 1B).

In addition, after curing the concrete, the steel plate (D) is composed of a composite structure of steel and concrete, thus securing extra structural stability against deflection, bending moment, and shear force, and has advantages such as ductility effect and prevention of chain collapse.

As shown in Figure 3, the construction method of the slab structure according to the present invention includes the step of disposing the lower root 20. The lower main root 22 is arranged in a direction parallel to the protrusion P formed in the steel plate D, and the lower back muscle 24 is arranged in a direction perpendicular to the protrusion P formed in the steel plate D. do. The lower back muscle 24 is configured to be in contact with the projection P, and the lower main root 22 is disposed between the projections P of the steel plate D.

The construction method of the slab structure according to the present invention includes the step of combining the points where the lower main root 22 and the lower back muscle 24 cross after the lower main root 22 and the lower back muscle 24 are disposed. do. There is no particular limitation on the method for combining the lower main root 22 and the lower back muscle 24. According to an embodiment of the present invention, the point where the lower main muscle 22 and the lower back muscle 24 meet can be tied and fixed through a thin iron wire.

Referring to FIG. 4, after combining and fixing the lower main root 22 and the lower back muscle 24, the step of disposing the spacer complex 30 on the lower muscle 20 is performed. The spacer composite 30 includes a plurality of spacers 32 and a support 34 supporting the plurality of spacers 32. The spacer 32 is an empty hollow body of a plastic material, and when it is buried in a concrete slab, the amount of concrete input is reduced by the volume of the spacer 32, and there is an effect of preventing vibration and noise from being transmitted. Light weight can be achieved. In the spacer 32, a plurality of spacers 32 constitute one spacer composite 30 by the support 34. This facilitates the transport of the spacer 32 and improves the convenience in construction.

According to one embodiment of the present invention, the spacer composite 30 includes a spacer 32 and a support 34, and the support 34 has a lower rod 342, an upper rod 344 and a connecting member 346 It includes.

The pair of lower rods 342 are spaced apart and arranged in parallel. On the pair of lower rods 342, a spacer 30 is disposed such that each of the pair of lower rods 342 is in contact with each other. The connecting member 346 is disposed to surround the spacer 30, and both ends of the connecting member 346 are connected to each of the pair of lower rods 342. The connecting member 346 may be disposed on one spacer 30, preferably, two or more. The spacer 30 is preferably formed of an ellipsoid. At this time, when two or more are fixed to both sides of the ellipsoid, the spacer 30 is fixed by the lower rod 342, the connecting member 346, and the upper rod 344, so that it is not detachable. The upper rod 344 is formed along the longitudinal direction of the spacer composite 30 to connect each connecting member 346.

According to the present invention, including the support 30, it is possible to prevent the hollow spacer, which is a hollow hollow, from being damaged by the weight of the upper muscle placed on the upper part. In addition, since the upper muscle 40 is supported by the connecting member 346 of the support 34, the convenience of back muscles is high.

5A to 5D, the spacer composite 30 may be formed through the following steps. First, a pair of lower rods 342 are spaced apart in parallel. Next, a plurality of spacers 32 are spaced apart at a predetermined interval to contact the lower rod 342 between the pair of lower rods 342. The upper rod 344 is disposed on the spacer 32 to be parallel to the lower rod 342. To surround the spacer 32, a connection member 346 that sequentially connects any one of the pair of lower rods 342, the other of the upper rod 344 and the lower rod 344, is formed. At this time, the spacer 32 is not detached from the inside of the connecting member 346, and a gap is formed with the connecting member 346 to prevent damage due to the weight of the connecting member 346 or the upper rod 344 can do.

The spacer composite 30 is disposed in a direction parallel to the longitudinal direction of the steel plate D, and is placed and supported on the lower muscle 20. That is, it is arranged along the protrusion P, and the lower rod 342 is arranged to contact the lower root 20.

Referring to FIG. 6, after the spacer complex 30 is disposed, a step of installing the upper muscle 40 is performed. The upper muscle 40 includes an upper main muscle 42 and an upper back muscle 44. Like the lower muscle 20, the upper main muscle 42 and the upper back muscle 44 are arranged to be orthogonal to each other and are placed to contact each other at a crossing point. The upper muscle 40 is maintained parallel to the horizontal direction by the upper rod 344 of the spacer composite 30, and the upper muscle 40 can be conveniently and stably disposed.

As in the step of installing the lower muscle 20, the step of fixing the upper main muscle 42 and the upper back muscle 44 relative to each other may be further performed. The upper main root 42 and the upper back muscle 44, like the lower muscle 20, can be fixed by tying a thin iron wire at each point where the upper main root 42 and the upper back muscle 44 intersect.

7 to 8, according to the present invention, after the installation of the upper root 40, the fixing device is mounted. The fixing device is mounted to prevent injury of the spacer composite 30. The spacer 32 has a space formed therein, that is, the inside is an empty component, and is much lighter than concrete, so that the spacer composite 30 itself may float by buoyancy when pouring concrete. That is, it is possible to prevent the spacer from being injured when the concrete is placed through the installation of the fixing device. The supporter 34 of the spacer composite 30 can prevent the floating of the spacer 32 within the slab structure somewhat, but the supporter 34 itself may move or float within the slab structure. The fixing device can be mounted to prevent this.

After the fixing device is mounted, concrete is poured.

Hereinafter, a fixing device according to an embodiment of the present invention will be described. Fixing device can be fixed by using a device for fixing the upper muscle 40 and the steel plate (D) to each other.

9A and 9B, according to an embodiment of the present invention, the fixing device 1 includes an extension part 2, a coupling part 4, and a mounting part 6.

The extension 2 is disposed in the slab structure, and is formed by adjusting its length to suit the thickness of the slab structure. In the drawing, the shape of the extension 2 is shown in a cylindrical shape, but the shape is not limited to a cylindrical shape, and may be composed of a column having a polygonal cross section, such as a square column, or an elliptical column having an elliptical cross section. .

The coupling portion 4 is formed on one side of the extension portion 2, and the mounting portion 6 is formed on the other side of the extension portion 2.

The engaging portion 4 is configured to be coupled to the upper muscle 40 of the slab structure. To this end, according to one embodiment of the present invention, the end portion of the extension portion 2 on the side where the coupling portion 4 is formed is curved and attached to the extension portion 2 again. That is, the ring 12 is formed on the extension portion 2 on the side where the coupling portion 4 is formed. The coupling portion 4 may be a bendable wire inserted into the ring 12. The coupling portion 4 may be a single-stranded wire or may include two or more strands. The coupling portion 4 is formed of a flexible material so that it can be easily fastened to the upper muscle so as to be wound or tied to the upper muscle. For example, the material of the coupling portion 4 may be a metal having high ductility.

The mounting portion 6 includes a first inclined portion 16 and a first fitting portion 26.

The first inclined portion 16 extends from one side of the extended portion 2. The first inclined portion 16 may extend by bending at an angle from the extended portion 2. The extension portion 2 and the first inclined portion 16 are formed to lie on the same plane, but on the same plane, the first inclined portion 16 extends while forming a certain angle with respect to the extension portion 2.

The first fitting portion 26 extends from the first inclined portion 16. The first fitting portion 26 is bent from the first inclined portion 16 at a predetermined angle and extends. The angle between the extension part 2 and the first inclined part 16 is an obtuse angle, preferably 130 ° to 160 °, and more preferably 150 °.

According to an embodiment of the present invention, the first fitting portion 26 may be formed substantially perpendicular to the longitudinal direction of the extension portion 2. According to another embodiment of the present invention, the first fitting portion 26 forms an acute angle with the first inclined portion 16, preferably 40 ° to 70 °, and more preferably 60 °. As will be described below, the first inclined portion 16 and the first fitting portion 26 through the above configuration, when combined with the protrusion P of the steel plate D, facilitates mounting and securely fixed To be able to.

10 shows a process in which the fixing device 1 according to an embodiment of the present invention is mounted, and FIG. 11 shows a state in which the fixing device 1 according to an embodiment of the present invention is mounted on a slab structure. Doing. The fixing device 1 is inserted toward the slab structure. After the first fitting portion 26 reaches the lower portion of the horizontal protrusion HP, that is, after inserting the fixing device 1 toward the slab structure, that is, the fixing device 1 is the horizontal protrusion (HP) When it reaches, the fixing device 1 is pulled upward. When the fixing device 1 is pulled in this way, the fixing device 1 is hung on the horizontal protrusion HP. When the engaging portion 4 is tied to the upper root 40, the fixing of the slab structure fixing device 1 is completed.

12A and 12B, according to another embodiment of the present invention, the fixing device 10 includes an extension portion 2, a coupling portion 4 and a mounting portion 60. The mounting portion 60 may include a first inclined portion 62, a first fitting portion 64, a second inclined portion 66 and a second fitting portion 68. Since the extension portion 2 and the coupling portion 4 are the same as described above, the same reference numerals are used for this.

The first inclined portion 62 and the first fitting portion 64 in this embodiment are applied to the description of the first inclined portion 16 and the first fitting portion 26 in the above-described embodiment, Below, only the differences will be described.

The second inclined portion 66 extends from the extended portion 2 like the first inclined portion 62, and more specifically, while the second inclined portion 66 forms a certain angle with respect to the extended portion 2 It can be extended. That is, the extension portion 2 is branched into two strands to constitute the first inclined portion 62 and the second inclined portion 66.

The second inclined portion 66 extends symmetrically with the first inclined portion 62 with respect to the longitudinal direction of the extended portion 2. For example, the second inclined portion 66 has an angle and a direction formed by the first inclined portion 62 and the extended portion 10 are different, but extends while forming the same angle. It is configured to extend in a direction symmetric to the extending direction of the first inclined portion 62, that is, to face each other. The angle of incidence between the first inclined portion 62 and the second inclined portion 66 forms an acute angle, preferably 10 ° to 25 °, and more preferably, approximately 20 °.

The second fitting portion 68 extends from the second inclined portion 66. The second fitting portion 68 extends by bending a certain angle from the second inclined portion 66. The second fitting portion 68 is configured to face the first fitting portion 64. That is, the first fitting portion 64 and the second fitting portion 68 are configured to be symmetrical with respect to the longitudinal direction of the extension portion 10.

The angle between the first inclined portion 62 and the first fitting portion 64 may be an acute angle, and the angle between the second inclined portion 66 and the second fitting portion 68 may be an acute angle. As the angle between the first inclined portion 62 and the first fitting portion 64 or the angle between the second inclined portion 66 and the second fitting portion 68 is smaller, the horizontal protrusion (HP) of the steel plate (D) It is easy to mount, but it is difficult to mount it on the horizontal protrusion (HP) when each angle between them is too small. According to the present invention, the angle between the first inclined portion 62 and the first fitting portion 64 or the second inclined portion 66 and the second fitting portion 68 so as to be smoothly mounted on the horizontal protrusion HP The angle is preferably approximately 5 ° to 40 °, and more preferably 20 ° to 30 °.

13 shows the process in which the fixing device 10 is inserted into the slab structure and coupled with the protrusions P of the steel plate D, and FIG. 14 shows a state in which the fixing device 10 is mounted. . The fixing device 10 is inserted toward the protrusion P of the steel plate D. When the fixing device 10 is inserted, the first fitting portion 64 and the second fitting portion 68 come into contact with the horizontal projecting portion HP, and when moved further downward, the first inclined portion 62 and the first The fitting part 64 and the second inclined part 66 and the second fitting part 68 are opened outwards, and when the horizontal protrusion part HP is passed, the first inclined part 62 and the first fitting part (2) 64) Then, the second inclined portion 66 and the second fitting portion 68 are retracted toward each other toward the inner side. In this case, it can be confirmed that even if the fixing device 10 is pulled upward, it is not detached from the horizontal protrusion HP. Mounting is completed by fastening the engaging portion 4 to the upper root 40.

15A and 15B, the fixing device 100 according to another embodiment of the present invention includes an extension part 2, a coupling part 4, and a mounting part 600. The mounting portion 600 includes a first inclined portion 602, a first fitting portion 604, a second inclined portion 606, a second fitting portion 608, a first stabilizing portion 610, and a second stabilizing portion ( 612). Since the extension portion 2 and the coupling portion 4 are the same as described above, the same reference numerals are used for this.

In addition, the first inclined portion 602, the first fitting portion 604, the second inclined portion 606, and the second fitting portion 608, the description in the above embodiment is applied as it is, so a duplicate description thereof Will be omitted here.

The first stabilization part 610 and the second stabilization part 612 extend from the first fitting part 604 and the second fitting part 608, respectively, and the first fitting part 604 and the second fitting part 608 ) And extends by bending at a certain angle. The first stabilizing portion 610 is a portion that extends from the first fitting portion 604, and the second stabilizing portion 612 is formed extending from the second fitting portion 608.

Referring to FIG. 16A, according to an example of the present invention, the extension directions of the first stabilizing portion 610 and the second stabilizing portion 612 are respectively, the first fitting portion 604 and the second fitting portion 608. ). According to another example of the present invention with reference to FIG. 16B, the extension directions of the first stabilization part 610 and the second stabilization part 612 are respectively the first fitting part 604 and the second fitting part 608. And other planes. That is, referring to FIG. 15A again, the first stabilization part 610 extends in the direction from the paper, and the second stabilization part 612 extends in the direction from the paper. Alternatively, the first stabilization portion 610 extends in the direction of entering from the paper, and the second stabilization portion 612 extends in the direction from the paper (see FIG. 16C). When formed in this way, the mounting of the steel plate (D) to the protrusion (P) can be made more robust.

According to an example of the present invention, the first stabilizing portion 610 and the second stabilizing portion 612 may extend in directions proximate to the first inclined portion 602 and the second inclined portion 606, respectively. have. The first stabilizing portion 610 may be formed to contact the first inclined portion 602 or may be formed so as to form a certain gap with the first inclined portion 602 and not to contact it. Similarly in the case of the second stabilizing portion 612, the second stabilizing portion 612 may be formed to contact the second inclined portion 606, and forms a certain gap with the second inclined portion 606 and does not contact it. It may be configured not to. That is, the first inclined portion 602, the first fitting portion 604, and the first stabilizing portion 610 may form a substantially triangular through surface. Similarly, the second inclined portion 606, the second fitting portion 608, and the second stabilizing portion 612 may form an approximately triangular through surface.

17 shows a process in which the fixing device 100 is mounted on the slab structure, and FIG. 18 shows a state in which the fixing device 100 is mounted on the slab structure. When the fixing device 100 is moved to the lower side of the slab structure, the first fitting part 604 and the second fitting part 608 are opened on both sides while contacting the horizontal protrusion HP, and when further downward force is applied, horizontal After passing through the protrusion HP, it is seated toward the vertical protrusion VP and fixing is completed. The slab structure fixing device 100 is configured such that the first stabilization unit 610 and the second stabilization unit 612 contact the lower surface of the horizontal protrusion HP, and thus can be fixed more firmly.

According to the present invention, since the fixing devices 1, 10, and 100 are inserted into the slab structure and pulled, they are directly mounted on the steel plate D, so that the convenience of mounting is high. That is, the present invention can be easily mounted in a simple manner, thereby improving convenience and speed of operation.

According to an embodiment of the present invention, the first fitting portions 26 and 64, the second fitting portion 68, the first stabilizing portion 610 and the second stabilizing portion 612 have a higher surface roughness than other portions. It can be formed to be higher, i.e., rougher.

The first fitting portion 26 may be subjected to a surface treatment so that the surface roughness is high. According to one embodiment of the present invention, the first fitting portion 26 may be configured to have a high surface roughness using sandpaper or the like. According to another embodiment of the present invention, a plurality of protrusions may be formed on the surface of the first fitting portion 26. According to another embodiment of the present invention, a plurality of grooves that are recessed from the surface may be formed on the surface of the first fitting portion 26. Since the first fitting portion 26 is a portion that is fixed in contact with the steel plate D including the protrusions P, as described below, in the manner described above in order to secure the adhesive force with the steel plate D It is preferable that the surface roughness is formed high. In the embodiment of the present invention, the first fitting portion 64 and the second fitting portion 68 may also have high surface roughness as described above. In addition, in the embodiment of the present invention, the first stabilization unit 610 and the second stabilization unit 612 may also be surface-treated to achieve the above object.

19A and 19B, the slab structure manufactured according to the construction method of the slab structure according to the present invention, compared to the conventional method shown in FIGS. 1A and 1B, not only does not require a joist, but also the number of copper and yoke required Since it can be significantly reduced, it is possible to significantly reduce the construction period and construction cost, and also has the advantage of reducing the discharge of waste materials.

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, and various substitutions, modifications and changes are possible within the scope of the present invention without departing from the technical spirit of the present invention. It will be obvious to those who have the knowledge of.

D: steel plate P: protrusion
VP: Vertical protrusion HP: Horizontal protrusion
20: lower root
22: lower main root 24: lower back muscle
30: spacer complex
32: spacer 34: support
342: lower rod 344: upper rod
346: connecting member
40: upper root
42: upper main root 44: upper back muscle
1, 10, 100: Fixture
2: Extension part 4: Coupling part
6, 60, 600: Mounting part 12: Hook
16: First slope 26: First fitting
62: first inclined portion 64: first fitting portion
66: second inclined portion 68: second fitting portion
602: first inclined portion 604: first fitting portion
606: second inclined portion 608: second fitting portion
610: first stabilization unit 612: second stabilization unit

Claims (7)

Placing a steel plate including a plurality of protrusions including vertical protrusions projecting from a surface and horizontal protrusions projecting horizontally on both sides of the vertical protrusions;
Reinforcing a lower main root between the protrusions of the steel plate;
Reinforcing the lower back muscles to be orthogonal to the lower main roots;
Placing a spacer complex including a spacer on the lower back muscle;
Reinforcing an upper muscle including an upper main muscle and an upper back muscle perpendicular to the upper main muscle on the spacer complex;
Installing a fixing device mounted on the protrusion and coupled to the upper muscle; And
The step of pouring the concrete; includes,
The fixing device,
Extensions;
A coupling portion formed on one side of the extension portion and formed to be coupled with the upper muscle; And
Includes; is formed on the other side of the extension portion is formed to be mounted to the horizontal projection;
The mounting portion,
A first inclined portion extending from the other side of the extension portion at a predetermined angle with respect to the longitudinal direction of the extension portion;
A second inclined portion curved and extended from the extended portion to be symmetric to the first inclined portion with respect to the longitudinal direction of the extended portion;
A first fitting portion curved at an angle from the first inclined portion;
A second fitting part curved from the second inclined part so as to be symmetric with the first fitting part with respect to the longitudinal direction of the extension part;
A first stabilizing part that curves at a predetermined angle from the first fitting part and extends toward the first inclined part; And
It includes; a second stabilizing portion that curves a predetermined angle from the second fitting portion and extends toward the second inclined portion.
The first inclined portion, the second inclined portion, the first fitting portion and the second fitting portion are formed to extend on a first plane,
The first stabilizing portion and the second stabilizing portion are configured to extend on a second plane formed to form a predetermined angle with the first plane,
The first stabilizing portion extends in a first direction on a second plane, and the second stabilizing portion is configured to extend in a second direction opposite to the first direction on the second plane. The method according to claim 1, The step of bundling a point orthogonal to the lower main and lower back muscles with a wire; Or tying the points at which the upper main and upper back muscles are orthogonal to each other with an iron wire; Construction method of a slab structure that further comprises any one of. The method according to claim 1, The spacer composite further comprises a support, the support,
First and second lower rods spaced apart in parallel;
A plurality of spacers disposed to contact each of the first lower rod and the second lower rod between the first and second lower rods;
An upper rod disposed on the plurality of spacers;
A plurality of connecting members connecting the first lower rod, the upper rod and the second lower rod, and bent to surround both sides of each spacer among the plurality of spacers;
Construction method of the slab structure comprising a. The method of claim 3, wherein the upper rod is in contact with the upper plinth to support the upper plinth. The method of claim 1, further comprising a spacer composite forming step of forming a spacer composite including a plurality of spacers and a support body integrally forming the plurality of spacers. The method according to claim 5, The spacer complex forming step,
Placing a pair of lower rods spaced apart in parallel;
Arranging a plurality of spacers spaced apart at a predetermined interval to contact the lower rod between the lower rods;
Placing an upper rod parallel to the lower rod on the upper portion of the spacer;
Coupling a connecting member to sequentially engage one of the pair of lower rods, the upper rod and the other of the pair of lower rods so as to surround the spacer;
Construction method of the slab structure comprising a. delete

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