KR100694764B1 - Construction methods of slab structure using concrete-composite crossbeam - Google Patents

Abstract

H-shaped steel composed of an upper flange, a lower flange and a web connecting the same, a plurality of hoop reinforcing bars welded to surround the H-shaped steel, and integrally formed with the H-shaped steel to bury at least a portion of the web and the lower flange Installing a concrete composite steel beam including a concrete member and at least one tension / compression reinforcing bar fixed in the longitudinal direction to the hoop rebar; Installing a deck plate on an upper surface of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; Disclosed is a slab structure construction method comprising a; and placing concrete on the deck plate.

Concrete composite beam, composite beam, slab

Description

Construction method of slab structure using concrete-composite crossbeam

1 to 3 are cross-sectional views showing a slab structure according to the prior art.

Figure 4 is a cross-sectional view showing an example of a concrete composite steel beam used in the slab structure construction method according to a preferred embodiment of the present invention.

Figure 5 is a cross-sectional view showing another example of the concrete composite steel beam used in the slab structure construction method according to a preferred embodiment of the present invention.

6 is a cross-sectional view showing a concrete composite beam according to another preferred embodiment of the present invention.

7 is a sectional view showing a concrete composite beam according to another preferred embodiment of the present invention.

8 is a cross-sectional view showing a concrete composite beam according to another preferred embodiment of the present invention.

9 is a cross-sectional view showing a concrete composite beam according to another preferred embodiment of the present invention.

10 is a cross-sectional view showing a concrete composite beam according to another preferred embodiment of the present invention.

11 is a cross-sectional view showing a concrete composite beam according to another preferred embodiment of the present invention.

12 is a cross-sectional view showing a concrete composite beam according to another preferred embodiment of the present invention.

13 is a cross-sectional view showing a concrete composite beam according to another preferred embodiment of the present invention.

14a and 14b is a cross-sectional view showing a concrete composite beam according to another preferred embodiment of the present invention.

Figure 15 is a side view showing a concrete composite beam according to another preferred embodiment of the present invention.

16 is a front view of the concrete composite beam shown in FIG.

17 is a cross-sectional view of FIG. 15.

18 is a side view showing the construction using the concrete composite beam of Figure 15.

19 and 20 are cross-sectional views showing a slab structure constructed using a concrete composite beam according to a preferred embodiment of the present invention.

21 and 22 are cross-sectional views showing a slab structure constructed using a concrete composite beam according to another preferred embodiment of the present invention.

23 and 24 are cross-sectional views showing a slab structure constructed using a concrete composite beam according to another preferred embodiment of the present invention.

25 and 26 are cross-sectional views showing a slab structure constructed using a concrete composite beam according to another preferred embodiment of the present invention.

The present invention relates to a method for constructing a slab structure, more specifically, it is possible to reduce the height of a building, to effectively resist bending stress and compressive stress, and to coat the H-shaped steel separately to improve fire resistance. The present invention relates to a slab structure construction method.

In general, the slab structure constitutes the floor or ceiling of a reinforced concrete building, and as shown in FIG. 1, the slab 11 constituting the floor of each layer and the H-shaped steel beam 12 supporting the slab 11. ).

On the other hand, the height of each floor of the building is the height of the interior space and the height of the slab structure (10). That is, as the height of the slab structure 10 is reduced, the height of each layer may be reduced. Therefore, even if the building of the same number of floors, as the height of the slab structure 10 is smaller, the height of the floor is smaller, the construction cost is reduced.

The height H of the slab structure 10 is obtained by adding the height H1 of the H-shaped steel beam 12 and the height H2 of the slab 11. When the height H1 of the H-shaped steel beam 12 or the height H2 of the slab 11 is reduced in order to reduce the height H of the slab structure 10, the supporting force or the bending resistance of the slab structure 10 becomes weak. This creates problems that affect the safety of the structure. Here, unexplained reference numeral 11a is a reinforcing bar reinforcement to the slab (11).

In addition, if the size of the H-beams 12 is reduced in order to reduce the height H of the slab structure 10, in this case, the cross-sectional area of the H-beams 12 'is also reduced, so that the compressive stress acting in the longitudinal direction and There is a problem of being vulnerable to bending stress.

In order to solve this problem, as shown in FIG. 2, the deck plate 14 having the groove 14a corresponding to the upper flange 12a of the H-beam 12 is provided in the H-beam 12. After that, a method of manufacturing the slab structure 15 by pouring concrete has been proposed.

The slab structure 15 has an advantage that the height is reduced by the depth of the groove (14a). However, while the slab structure 15 is effective for the stress acting in the direction A perpendicular to the slab 13, the groove 14a is not effective for the stress acting in the direction B parallel to the slab 13. Since the thickness of the slab 13 in the part is thin, the shear stress and the bending stress are concentrated largely, and there is a disadvantage that the compressive stress is also weak.

3 is a cross-sectional view showing a slab structure 19 including a cradle 16 welded to the web 12b of the H-shaped steel beam 12 and a deck plate 17 installed on the cradle 16. That is, the slab which welds the cradle 16 to the web 12b and installs the deck plate 17 on the cradle 16 to cast concrete so that a predetermined portion of the H-beam 12 is embedded in the concrete. It is a structure 19.

The slab structure 19 has an advantage of being structurally safe compared to the slab structure 15 of FIG. However, the process of welding the cradle 16 to the web 12b has to be additionally performed, and if the welding portions of the cradle 16 and the web 12b are not firm, there is a problem that seriously affects the safety of the structure. .

On the other hand, the slab structures are vulnerable to fire because the H-beam is exposed to the outside. That is, the high heat due to the fire is transmitted to the H-shaped steel as it may cause a problem that the H-shaped steel is deformed. To prevent this, the exposed H-beams must be treated with a separate fireproof coating.

On the other hand, the H-shaped steel beams are connected to each other by welding or using a fastening member such as a bolt. However, this method may be corroded because the connection part of the H-beam is directly exposed to the outside, and in particular, the connection part may be easily damaged and deformed in case of fire.

In addition, since the reinforcing bars are not continuously reinforced in the portions where the H-shaped steel beams 12 are connected to each other, there is a problem that these connecting portions are not structurally stable.

The present invention has been made to solve the above problems, to provide a method for constructing a slab structure using a concrete composite steel beam that does not require a coating that can effectively reduce the height of the structure without affecting the safety of the structure. have.

Another object of the present invention to provide a slab structure construction method that can effectively resist the bending stress and compressive stress acting on the structure.

In order to achieve the above object, the slab structure construction method according to the present invention, the upper flange, the lower flange and the upper flange and the web connecting the lower flange and the H-shaped steel and the upper flange while wrapping the lower flange of the H-shaped steel A plurality of hoop rebars welded to the flange at predetermined intervals along the longitudinal direction, a concrete member integrally formed with the H-beams to bury at least a portion of the web and the lower flange, and fixed to the hoop rebars in the longitudinal direction Installing a concrete composite beam including at least one tension / compression reinforcement and a support installed on an upper surface of the concrete member to support a deck plate; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; And pouring concrete on the deck plate.

According to another embodiment of the present invention, the H-shaped steel consisting of an upper flange, a lower flange and a web connecting the upper flange and the lower flange with each other, and installed at predetermined intervals along the length direction to surround the lower flange of the H-beam A plurality of hoop reinforcements, a concrete member integrally formed with the H-shaped steel to bury at least a portion of the web and a lower flange, at least one tension / compression rebar fixed in the longitudinal direction to the hoop reinforcement, and the concrete member A support installed on an upper surface of the support for supporting the deck plate, a fixing portion embedded inwardly from the upper surface of the concrete member, and an extension portion extending from the fixing portion to extend laterally along the upper surface of the concrete member. Install the concrete composite beam including the reinforcing bar Step; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; There is provided a slab structure construction method comprising; and pouring concrete on the deck plate.

Preferably, the fixing part of the reinforcing bar is extended in parallel with the web of the H-shaped steel is fixed to the web.

Further alternatively, the fixing part of the reinforcing bar extends to be inclined at a predetermined interval with the web of the H-beam so that its end is fixed to the lower flange of the H-beam.

According to another embodiment of the present invention, the H-shaped steel consisting of an upper flange, a lower flange and a web connecting the upper flange and the lower flange with each other, and are installed at predetermined intervals along the longitudinal direction to surround the lower flange of the H-beam A plurality of hoop reinforcements, a concrete member integrally formed with the H-shaped steel to bury at least a portion of the web and a lower flange, at least one tension / compression rebar fixed in the longitudinal direction to the hoop reinforcement, and the concrete member Buried in the concrete member so as to be inscribed on the web of the H-shaped steel and the support for supporting the deck plate installed on the upper surface of the upper plate and the first auxiliary reinforcing bar embedded in the concrete member so as to be inscribed with the hoop rebar and installed in the longitudinal direction. A second auxiliary reinforcing rod and installed in the longitudinal direction, and the first and second beams Steps for installing a concrete composite beams in the beam, including coupling reinforcement is installed embedded in the concrete member to interconnect the reinforcement; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; And pouring concrete on the deck plate.

According to another embodiment of the present invention, the H-shaped steel consisting of an upper flange, a lower flange and a web connecting the upper flange and the lower flange with each other, while both ends of the lower flange of the H-shaped steel wrap around the A plurality of hoop reinforcing bars provided at predetermined intervals along the longitudinal direction to abut, a concrete member integrally formed with the H-shaped steel to bury at least a portion of the web and a lower flange and the remaining portions except the upper portion of the hoop reinforcing bars, Installing a concrete composite steel beam comprising at least one tension / compression rebar fixed in a longitudinal direction to the hoop reinforcement, and a support supporting a deck plate disposed on and placed on an upper surface of the concrete member; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; There is provided a slab structure construction method comprising; and pouring concrete on the deck plate.

Here, the tension / compression reinforcement, and includes at least one exposed reinforcing bar not embedded in the concrete member, and further includes a mounting member fixed to the top of the corner of the hoop reinforcement so that the exposed reinforcing bar is coupled and supported.

Preferably, the mounting member, the end is fixed to the top of the corner of the hoop reinforcement, form a 'L' shape so that the exposed reinforcing bar is fixed to the corner inner circumference.

According to another embodiment of the present invention, the H-shaped steel consisting of an upper flange, a lower flange and a web connecting the upper and lower flanges with each other, and at a predetermined interval along the longitudinal direction to surround the lower flange of the H-shaped steel A plurality of hoop bars provided, at least one tension / compression bar fixed in the longitudinal direction to the hoop bars, a support for supporting a deck plate installed on and placed on the upper surface of the concrete member, and an end portion of the H-shaped steel A connection plate connected to each other, a plurality of extension bars having one end fixed to a front surface of the connection plate, and extending in a longitudinal direction, auxiliary hoop bars that wrap and bind the plurality of extension bars at predetermined intervals, and the other of the extension bars. At least one compressive force transmission plate coupled to the end, and the web, hoop reinforcement, and after Steps for installing a concrete composite beams in the beam comprising a reinforcement, at least a portion and the tensile / compression reinforcement, extending reinforced concrete and at least one member formed with the H-beam and integrally so that the lower flange is embedded in the connecting plate; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; There is provided a slab structure construction method comprising; and pouring concrete on the deck plate.

According to the invention, further comprising the step of reinforcing the connecting reinforcing bar is disposed so that at least one end is adjacent to the reinforcing bars so as to transfer the axial stress of the reinforcing bars on one side of the H-beams to the reinforcing bars on the opposite side .

In this case, the connecting reinforcing bar is disposed across the upper flange of the H-beam.

Alternatively, the connecting reinforcing bar may be reinforced to penetrate through holes formed in the web of the H-beam.

Alternatively, the connecting bars may be U-shaped, the ends of which are adjacent to the ends of the reinforcing bars respectively adjacent to each other, and the center thereof may be installed or fixed to be close to the H-beams.

Alternatively, the connecting rebar may be L-shaped, one end of which may be adjacent to the end of the reinforcing bar, and the other end thereof may be installed or fixed to be close to the H-beam.

Preferably, the deck plate is placed on the support and welded.

According to the invention, the support, the bracket is installed on the upper surface of the concrete member to support the deck plate; And a buried member integrally formed with the bracket and embedded in the concrete member.

Preferably, the end of the buried member is fixed to the lower flange of the H-beam.

Preferably, the concrete composite beam further comprises a cover member installed in the longitudinal direction to surround the side and the lower surface of the concrete member, which is made of synthetic resin containing carbon fiber FRP or glass fiber FRP.

Hereinafter, a method of constructing a slab structure that can be used simultaneously as a bending and compressive material according to a preferred embodiment of the present invention and which can support axial stress in combination with a concrete composite beam that does not require a fireproof coating will be described in detail with reference to the accompanying drawings. . Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

4 is a cross-sectional view showing a concrete composite beam according to a preferred embodiment of the present invention,

Referring to FIG. 4, the concrete composite beam beam 100 includes an H-beam 12, a hoop rebar 20 installed at a predetermined interval on the H-beam 12, and at least a portion of the H-beam 12. The concrete member 30 is embedded to be embedded.

The H-beam 12 includes an upper flange 12a and a lower flange 12c arranged side by side and a web 12b connecting the upper and lower flanges 12a and 12c to each other.

Preferably, at least one of the lower flange 12c or the web 12b of the H-shaped steel 12 has a stud 57 embedded in the concrete member 30 protruding. The stud 57 further strengthens the coupling of the H-shaped steel 12 and the concrete member 30. More preferably, a plurality of through-holes are formed in the web 12b of the H-shaped steel 12 so as to soak the concrete during pouring to enhance the adhesion of the concrete member 30.

The hoop rebar 20 is welded to the H-shaped steel 12 to surround the H-shaped steel 12 at predetermined intervals along the longitudinal direction of the H-shaped steel 12. Preferably, both ends of the hoop rebar 20 are welded and fixed to the upper flange 12a. The hoop rebar 20 serves to evenly distribute the compressive stress acting in the longitudinal direction of the H-beam 12 over the cross section of the H-beam 12, and to resist the shear force acting perpendicular to the cross-section.

The concrete member 30 is formed to be integral with the H-shaped steel 12 along the longitudinal direction of the H-shaped steel 12, and is preferably formed to fill at least a portion of the web 12b and the lower flange 12c. . Preferably, the cross section of the concrete member 30 has a trapezoidal shape whose upper surface is wider than the lower surface. Since the upper surface of the concrete member 30 is wider than the lower surface there is an advantage that the area on which the deck plate 55 can be mounted becomes wider as will be described later.

Preferably, the concrete member 30 is formed to embed at least a portion of the web 12b and the lower flange 12c therein.

The concrete member 30 effectively resists the bending stress and the compressive stress acting in the axial direction together with the H-shaped steel 12. In addition, the concrete member 30 to effectively respond to the bending stress by increasing the cross-sectional area of the concrete composite beams (100).

In addition, since the H-shaped steel 12 is embedded in the concrete member 30 and the slab concrete, which will be described later, the H-shaped steel 12 is not exposed to the outside and thus does not require a separate fireproof coating treatment. This is a point that can greatly improve the fire resistance of the structure constructed by the concrete composite beams 100 of the present invention.

Preferably, the upper surface of the concrete member 30 is formed to have a predetermined roughness. This is to increase the bonding force with the slab cast on the upper surface.

The concrete composite beams 100 may include tension / compression rebars 51 and 52 arranged in the longitudinal direction in the concrete member 30. The tension / compression reinforcement 51, 52 is to resist the tensile stress and compressive stress acting on the concrete composite steel beam 100. Preferably, the tensile / compression reinforcing bar is composed of exposed reinforcing bar 51 and the buried reinforcing bar 52 embedded therein without being embedded in the concrete composite steel beam 100, more preferably they are hoop reinforcement (20) It is welded to the inner side or fixed by fastening means such as wire. This tension / compression rebar not only maintains the spacing of the hoop rebar 20 but also serves as a support for resisting tensile and compressive stress as described above. In this embodiment, although the exposed reinforcing bar 51 and the embedded reinforcing bar 52 is illustrated, the present invention is not limited thereto, and the rebar may be arranged in various configurations.

Preferably, when the exposed reinforcing bar 51 is located on one side of the upper flange 12a, the buried reinforcing bar 52 is located between the lower flange 12b and the hoop rebar 20. According to the embodiment of the present invention, the position of the exposed rebar 51 may be changed to the upper or lower portion of the upper flange 12a as necessary.

Preferably, the concrete member 30 is provided with a support 53 on which the deck plate 55 is placed and supported thereon. The support 53 includes a bracket 53a for supporting the deck plate 55 and a buried member 53b formed integrally with the bracket 53a and embedded in the concrete member 30.

Preferably, the bracket 53a is installed at an upper edge portion of the concrete member 30, and more preferably a shape corresponding to the upper edge shape of the concrete member 30, such as a rectangular “L” shaped cross section. More preferably, the bracket 53a may be installed so that the outer surface thereof is continuous with the outer surface of the concrete member 30 without protruding to the outside for aesthetic appearance.

5 is a cross-sectional view showing a concrete composite beam according to another preferred embodiment of the present invention. Here, the same reference numerals as in the above-described drawings indicate the same members.

Referring to FIG. 5, the concrete composite beams according to the present embodiment have a rectangular cross section of the concrete member 31. The rectangular concrete composite beam makes it easy to form formwork. In addition, the bracket 54a of the support 54 may be installed to protrude laterally from the top edge of the concrete member 31.

As shown in FIG. 6, which shows another example of the present invention, the tension / compression reinforcement 51 ″ exposed on the upper inner surface of the hoop rebar 21 having the bent portion 51a may be located. The exposed reinforcing bar 51 "is located at a position relatively higher than the surface of the upper flange 12a of the H-beam 12 so that it does not collide with the H-beam of the adjacent concrete composite steel beam. In this case, the exposed reinforcing bars 51 " can be continuously installed and can effectively support the stress.

7 to 14 show the construction of a concrete composite beam according to another preferred embodiment of the present invention. Here, the same reference numerals as in the previously shown drawings indicate the same members.

First, referring to FIG. 7, the concrete composite beams according to the present embodiment include a joint reinforcing bar 150 extending in both directions from the web 12b of the H-beam 12.

The reinforcing bar 150 is for reinforcing and reinforcing a joint with a slab (not shown) installed on a concrete composite beam, preferably extending in both sides in parallel with the slab from the web 12b of the H-beam 12 It comprises an extension part 150a and a fixing part 150b which is embedded downward from the upper surface of the concrete member 31 while extending downwardly in parallel with the web 12b, thereby forming an L shape. . More preferably, the fixing part 150b may be fixed to the web 12b by welding or the like.

The joint reinforcing bar 150 may be selectively installed to be in contact with or between the hoop reinforcing bars 20, and may be coupled to each other by welding or the like when contacting the hoop reinforcing bar 20.

In addition, the joint reinforcing bar 150 is embedded into the slab when installing the deck plate and slab as described below to be embedded into the slab to maintain a more solid bond with the slab to act on the side of the section steel without a separate connecting reinforcement H It functions to transmit to the other side of the section steel web. Therefore, in this case, there is no need to provide a separate connecting rebar.

According to another embodiment of the present invention, preferably, the concrete composite steel beam having the joint reinforcing bar is not provided with a separate stud for increasing the binding force with the concrete member 31, instead of the concrete member ( 31) can increase the binding strength.

As such an example, as shown in FIG. 8, the joint reinforcing bar 150 'is extended from the web 12b of the H-beam 12 to both sides parallel to the slab 150'a, and Fixing part 150b which extends downwardly at a predetermined angle with the web 12b and is embedded in the concrete member 31 with its end joined to the lower flange 12c of the H-shaped steel 12, for example, by welding. Contains').

In this case, the lower flange 12c does not need to be provided with a separate stud, and the binding force with the concrete member 31 may be increased by the fixing part 150b 'of the joint reinforcing bar 150'.

Another method for increasing the binding force to the concrete member is shown in FIG. Referring to FIG. 9, the concrete composite shaped steel beam of the present embodiment includes a support 54 provided in the concrete member 30, and the support 54 is a bracket 54a for supporting the deck plate 55 of FIG. 19. And a buried member 54b formed integrally with the bracket 54a and extending to the lower flange 12c of the H-shaped steel 12 to be embedded in the concrete member 30.

Here, the buried member 54b has an end thereof fixed to the lower flange 12c by, for example, welding or the like, and serves as a reinforcing member for increasing binding force with the concrete member 31.

FIG. 10, which shows another embodiment of the present invention, shows a concrete composite beam that can effectively resist axial stress while improving the binding force on the concrete member.

According to the present exemplary embodiment, a pair of first and second auxiliary reinforcing bars 181 and 182 are further installed in the concrete member 31 in the longitudinal direction, and the first auxiliary reinforcing bars 181 are hoop reinforcing bars 20. And the second auxiliary reinforcing bar 182 is installed to be inscribed in the web 12b of the H-shaped steel 12. This secondary rebar also effectively resists axial stress.

In addition, the secondary reinforcing bars (181, 182) are interconnected by the binding reinforcing bar 180, the binding reinforcement 180 is both ends of the secondary reinforcing bars (181, 182), or selectively welded It is embedded in the concrete member 31 with it being fixed.

The binding reinforcement 180 may be disposed between the hoop reinforcement 20 at predetermined intervals, but may be fixed in contact with the hoop reinforcement 20. In this case, the binding reinforcement 180 forms a closed reinforcement shape together with the hoop reinforcement 20 to more effectively resist the stress applied in the axial direction.

According to another embodiment of the present invention, both ends of the hoop rebar may be maintained at a higher position or lower position without being fixed or welded to the upper flange of the H-beam.

That is, as shown in FIG. 11, the exposed reinforcing bar 51 'is located under the upper flange 12a, and the hoop reinforcing bar 20' has both ends in contact with the H-shaped steel 12 and is not fixed to the upper flange 12a. It is located low.

Alternatively, as shown in FIG. 12, the exposed reinforcing bar 51 ″ is positioned above the upper flange 12a, and the hoop rebar 20 ″ is not fixed in contact with the H-shaped steel 12 at both ends thereof. It is located higher.

Concrete composite steel beam according to another embodiment of the present invention shown in Figure 13 includes a hoop reinforcement 190 of the 'ㅁ' shape. Both ends of the hoop reinforcement 190 are in contact with both sides of the web 12b of the H-shaped steel 12 and form a closed type surrounding the lower flange 12c, and both ends are mounted or welded without fixing. .

In addition, the upper portion of the hoop reinforcement 190 is exposed without being embedded in the concrete member 31 is embedded in the slab at the time of slab (60 of FIG. 19) to increase the mutual binding force.

In the present embodiment, a portion where the exposed rebar 51 'needs to be installed may be provided with a mounting member 191 on which the exposed rebar 51' is welded or bound and mounted.

The mounting member 191 has a substantially 'L' shape, the end is fixed or welded to the top of the corner of the hoop reinforcement 190, so that the exposed reinforcement (51 ') is fixed to the corner inner circumference Combined. The mounting member 191 is generally installed along the longitudinal direction, or optionally installed in the area where the exposed reinforcing bar 51 'is installed as necessary.

According to another embodiment of the present invention, as shown in FIG. 14A, the concrete composite steel beam may include a rectangular cover member 195 that surrounds and protects the concrete member 31.

The cover member 195 is made of a synthetic resin containing carbon fiber FRP or glass fiber FRP, and is installed to surround the side and bottom of the concrete member 31.

Preferably, the cover member 195 may serve as a formwork when manufacturing a concrete composite beam according to the present invention, for example, the cover member 195, including reinforcing bars 52, including H-shaped steel 12, When the support 54, the joint reinforcing bars 150, etc. are installed and the concrete is poured and cured, the concrete composite beams in which the cover member 195 is integrally coated can be obtained.

In this case, the cover member 195 can prevent the concrete composite steel beam according to the present invention from being scratched or damaged during the transport or construction process.

According to another embodiment, as shown in FIG. 14B, a corner member 195 ′ bent along a longitudinal direction may be installed at a corner of the lower edge of the concrete member 31 of the concrete composite beam.

In this case, the corner member 195 'may be made of synthetic resin containing carbon fiber FRP or glass fiber FRP or made of steel. More preferably, at least one stud may be further provided on the corner member 195 'to increase the binding force between the corner member 195' and the concrete member 31.

Although the configurations described with reference to FIGS. 7 to 14 are limited to concrete composite beams having a rectangular cross section, they are equally applicable to concrete composite beams having a trapezoidal cross section as shown in FIG. 4. It must be understood.

15 to 17 is shown a configuration of a concrete composite beam according to another preferred embodiment of the present invention. Here, the same reference numerals as in the above-described drawings indicate the same reference numerals.

According to this embodiment, the connecting plate 200 made of a metal material is fixedly installed at an end of the H-shaped steel 12 in a right angle direction, and a plurality of extension rebars are installed in the longitudinal direction on the front surface of the connecting plate 200 One end of 410 is welded and fixed.

The plurality of extension bars 410 extend in parallel with the exposed bar 51 'and the buried bar 52, and are bound to each other by the auxiliary hoop bar 421 at predetermined intervals.

As in the above-described embodiment, the exposed reinforcing bar 51 'and the buried reinforcing bar 52 are bound by the hoop reinforcing bar 20, and both ends of the hoop reinforcing bar 20 are connected to the upper flanges of the H-shaped steel 12. Welding on 12a). Alternatively, the hoop reinforcement may be located above or below the upper flange 12a as shown in FIG. 11 or 12 above without being welded onto the upper flange 12a.

In addition, the exposed reinforcing bar 51 ′ and the buried reinforcing bar 52 positioned in front of the connection plate 200 are also coupled to each other by the closed hoop bar 420.

As described above, the hoop rebars can effectively constrain and resist axial stresses after concrete placement.

At least one compression force transmission plate 430 is installed at the other end of the extension rebar 410 in a right angle direction, for example, by welding.

In the present embodiment, the concrete member 431 is poured in the longitudinal direction to bury a portion of the lower flange 12c and the web 12b of the H-shaped steel 12, the concrete member 431 is the extension reinforcement 410 ) And some of the auxiliary hoop reinforcing bars 421 which bind the same, are also formed to be embedded.

Optionally, at least one stud 440 is attached on the upper flange 12a and / or the lower flange 12c of the H-beam 12 to contribute to increasing the binding force in slab concrete casting.

Concrete composite beam having such a configuration can be constructed as shown in FIG. That is, as shown, the support beam 270 is installed on the concrete beam of the present invention (CFT) or pillar 450, and the concrete composite beam is mounted thereon. At this time, the reinforcing bars 410, 51 'and 52 which are not embedded in the concrete member 431 are arranged in the column concrete placing line 460.

In this state, a deck plate (not shown) for slab construction may be installed between concrete composite beams, reinforced with reinforcing bars, and concrete may be poured to construct columns and slabs at the same time.

Concrete composite beam according to this embodiment allows the beam to be effectively constructed without additional padding or additional H-beam steel when the distance between the pillar and the pillar is relatively wide.

Then, a method of constructing a slab using the concrete composite beam of the present invention having the above configuration will be described.

19 and 20 illustrate a slab structure constructed by using a concrete composite beam according to a preferred embodiment of the present invention. Here, only reinforcing bars 61 and 62 and H-beams 12 and slab 60 are shown in FIG. 19 and the remaining components are omitted for convenience.

The slab structure includes a slab (60), and a concrete composite beam (100) for supporting the slab (60).

The deck plate 55 is placed on the support 53 of the concrete composite beam beam 100. The deck plate 55 is typically made of steel and may be coupled to the support 53 by welding. The slab structure can then be completed by reinforcing bars and pouring concrete. At this time, the deck plate 55 is used as a permanent structure without dismantling.

In the present invention, the reinforcing bar reinforcement to the slab 60, preferably, reinforcing bar 61 is provided on both sides of the H-shaped steel 12, and connecting reinforcing bars are installed across the upper portion of the H-shaped steel 12 62 is provided. Preferably, the connecting reinforcing bar 62 is installed to be adjacent to the reinforcing bar 61, and serves to transfer the compressive stress applied to the reinforcing bar 61 on one side to the reinforcing bar 61 on the other side. It is already known that stresses can be transferred between reinforcing bars when reinforcing bars embedded in concrete are approached within a predetermined distance from each other.

Then, the slab structure construction method using a concrete composite beam according to a preferred embodiment of the present invention will be described.

According to the present invention, the concrete composite beam can be manufactured in a construction site or used in a pre-fabricated state in a factory. When the production of the concrete composite beams is completed, as shown in Figure 19, install a concrete composite beams (100).

Subsequently, the deck plate 55 is installed on the support bracket 53a installed on the concrete member 30 of the concrete composite beam 100. Preferably, the deck plate 55 is fixed to the bracket (53a) by welding.

The tech plate 55 includes a formwork deck plate, a structural deck plate, a composite deck plate, and the like. The formwork deck plate is to be used only as a formwork does not function as a structural material, the structural deck plate serves as a structural material and the concrete placed on it is a non-structural material, smoothness of the floor, vibration prevention, noise prevention, It is to perform the role of insulation. In addition, the composite deck plate is a deck plate that combines the functions of the formwork and structural deck plate, serves as a formwork and also as a structural material integrated with concrete. In the slab structure construction method of the present invention, any of the deck plates may be used.

When the installation of the deck plate 55 is completed, the reinforcing bars 61 for reinforcing the slab 60 and the connecting bars 62 connecting them are then placed. As shown in FIGS. 19 and 20, the reinforcing bars 61 are respectively arranged on both sides of the H-beams 12, and the connecting bars 62 are adjacent to the reinforcing bars 61. It is installed across the upper flange 12a. As described above, the connecting reinforcing bar 62 is installed to be adjacent to the reinforcing bar 61 within a predetermined interval, and transmits the compressive stress applied to the reinforcing bar 61 on one side to the reinforcing bar 61 on the other side Do it.

As above, when the reinforcement of the slab is completed, the concrete is poured to complete the slab structure.

When curing of the slab is completed, remove the formwork deck plate. On the other hand, in the case of the structural deck plate and composite deck plate to leave the deck plate as it serves as a structural material.

According to the slab construction method of the present invention, the reinforcing bars in the slab can be arranged in various forms will be described for an example.

21 to 22 illustrate reinforcement configurations of reinforcing bars in a slab construction method according to various embodiments of the present disclosure. Some of these figures show only the reinforcing bars and H-beams in the slab structure, and the rest of the drawings are omitted for convenience. In addition, the same reference numerals as in the above-described drawings indicate the same member.

First, referring to Figures 21 and 22 showing the reinforcement configuration in the slab construction method according to another embodiment of the present invention, the reinforcing bar (61a) is the H-shaped steel 12 of the concrete composite beam 100 It is arranged on both sides.

In addition, a through hole (not shown) is formed in the web 12b of the H-shaped steel 12 so that the connecting reinforcing bar 62a penetrates through the through hole. At this time, as described above, the connecting reinforcing bar 62a is disposed to be adjacent to the reinforcing bar 61a.

In the present embodiment, since the reinforcing bar 61a and the connecting bar 62a are located at a relatively lower height than the upper flange 12a of the H-beam 12, the center and / or the bottom of the slab may be reinforced.

23 and 24 show the reinforcement configuration of the reinforcing bar in the slab construction method according to another embodiment of the present invention.

According to the present embodiment, a plurality of reinforcing bars 61b are disposed at both sides of the H-shaped steel 12 of the concrete composite beam 100 at predetermined intervals. In addition, at the end of the reinforcing bar 61b, a connecting bar 62b for transmitting the axial stress applied to the reinforcing bar 61b to the H-shaped steel 12 is disposed adjacent thereto.

The connecting reinforcing bars 62b have a U-shape, and end portions thereof are disposed to be close to ends of the reinforcing bars 61b adjacent to each other. At the same time, the center portion of the connecting reinforcing bar 62b is installed in close proximity to the H-beam 12 or welded thereto.

According to this configuration, the connecting reinforcing bar (62b) is to transfer the axial stress applied to the reinforcing bar (61b) on one side via the H-shaped steel (12) to the reinforcing bar (61b) on the other side.

Preferably, the connecting reinforcing bar 62b, as shown in FIG. 24, may be disposed so that the ends of adjacent connecting bars overlap each other and serve as a more effective reinforcing structure.

 25 and 26 show the reinforcement configuration of the reinforcing bar in the slab construction method according to another embodiment of the present invention.

According to the present embodiment, a plurality of reinforcing bars 61c are disposed at both sides of the H-shaped steel 12 of the concrete composite beam 100 at predetermined intervals. Further, at the end of the reinforcing bar 61c, a connecting bar 62c for transmitting the axial stress applied to the reinforcing bar 61b to the H-shaped steel 12 is disposed adjacent thereto.

The connecting reinforcing bar 62c has an L shape, and one end thereof is positioned to be close to the end of the reinforcing bar 61c, and the other end thereof is installed to be adjacent to the H-shaped steel 12 or welded thereto.

According to this configuration, the connecting reinforcing bar 62c transfers the axial stress applied to the reinforcing bar 61c on one side to the reinforcing bar 61c on the other side via the H-shaped steel 12.

Although the present embodiment has been described with respect to the slab structure using the concrete composite beam 100 having a cross-section of the concrete member trapezoidal shape, the present invention is not limited thereto, and may be applied to a concrete composite beam having a cross section of various shapes.

In addition, the reinforcing bars and connecting bars described and illustrated in the above embodiments may be used in various combinations, and additional reinforcing bars may be further arranged at various locations as needed.

As described above, the slab structure construction method that can be used simultaneously with the bending and compression material according to the present invention and can support the axial stress in combination with the concrete composite steel beam that does not require a fire-resistant coating has the following effects.

First, it provides a slab structure construction method that can effectively reduce the height of the floor without affecting the safety of the structure.                     

Second, it provides a slab structure construction method that can effectively resist the bending stress and compressive stress acting on the structure.

Third, the present invention provides a method for constructing a slab structure that does not require a separate fire-resistant coating on the H-beam.

Fourth, in the case of a jointed reinforcing bar, when the slab is placed, it is embedded in the slab to maintain the binding with the slab more firmly, thereby providing the function of transferring the stress acting on one side of the section steel to the other side of the H-shaped steel web without a separate connecting bar. do. Therefore, in this case, there is no need to provide a separate connecting rebar.

Claims (36)

H-shaped steel consisting of an upper flange, a lower flange and a web connecting the upper flange and the lower flange to each other, and a plurality of hoop rebars which are welded to the upper flange at predetermined intervals along the length direction while covering the lower flange of the H-shaped steel. And a concrete member integrally formed with the H-shaped steel to bury at least a portion of the web and a lower flange, at least one tension / compression rebar fixed in the longitudinal direction to the hoop reinforcement, and installed on an upper surface of the concrete member. Installing a concrete composite steel beam including a bracket supporting a deck plate disposed thereon and a support formed integrally with the bracket and embedded in the concrete member; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; And Placing concrete on the deck plate; Slab structure construction method comprising a. The method of claim 1, Reinforcing the connecting reinforcing bar is disposed so that at least one end is adjacent to the reinforcing bars so as to transfer the axial stress of the reinforcing bars on one side of the H-beams to the reinforcing bars on the opposite side; Structure construction method. The method of claim 2, wherein the connecting reinforcing bar, Slab structure construction method characterized in that the reinforcement across the upper flange of the H-beam. The method of claim 2, wherein the connecting reinforcing bar, Slab structure construction method characterized in that the reinforcement to penetrate through the through-hole formed in the web of the H-shaped steel. The method of claim 2, wherein the connecting reinforcing bar, A slab structure construction method comprising a U-shape, an end portion of which is adjacent to an end portion of the reinforcing bars adjacent to each other, and a central portion thereof is installed or fixed to be close to the H-beam. The method of claim 2, wherein the connecting reinforcing bar, A L-shape, one end of which is close to the end of the reinforcing bars, the other end is installed or fixed to the H-shaped steel, characterized in that the slab structure construction method. An H-shape consisting of an upper flange, a lower flange, and a web connecting the upper and lower flanges to each other, a plurality of hoop bars installed at predetermined intervals along a length direction to surround the lower flange of the H-beam, and at least one of the webs. A concrete member integrally formed with the H-beam to fill a portion and a lower flange, at least one tension / compression rebar fixed in the longitudinal direction to the hoop reinforcement, and a deck plate installed on and placed on an upper surface of the concrete member. And a joint reinforcing bar including a support for supporting a support member, and a fixing part embedded in an interior from an upper surface of the concrete member, and an extension part extending from the fixing part to extend laterally along the upper surface of the concrete member. Installing beams; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; And Placing concrete on the deck plate; Slab structure construction method comprising a. The method of claim 7, wherein A first auxiliary reinforcing bar embedded in the concrete member to be inscribed in the hoop reinforcement and installed in the longitudinal direction, and a second auxiliary reinforcing bar embedded in the concrete member and installed in the longitudinal direction to be inscribed in the web of the H-shaped steel; And And a binding bar embedded in the concrete member so as to interconnect the first and second auxiliary bars. The method of claim 7, wherein The fixing part of the reinforcing bar, the slab structure construction method characterized in that extending parallel to the web of the H-shaped steel fixed to the web. The method of claim 7, wherein The fixing part of the reinforcing bar is extended to be inclined at a predetermined interval with the web of the H-shaped steel slab structure construction method characterized in that the end is fixed to the lower flange of the H-shaped steel. An H-shaped steel consisting of an upper flange, a lower flange, and a web connecting the upper and lower flanges to each other, a plurality of hoop bars installed at predetermined intervals along a length direction to surround the lower flange of the H-shaped steel, and at least the web A concrete member integrally formed with the H-beam to fill a portion and a lower flange, at least one tension / compression rebar fixed in the longitudinal direction to the hoop reinforcement, and a deck plate installed on and placed on an upper surface of the concrete member. And a second auxiliary reinforcement embedded in the concrete member to be inscribed in the longitudinal direction of the first auxiliary reinforcing bar and embedded in the concrete member to be inscribed in the longitudinal direction to be inscribed in the hoop reinforcement and the web of the H-shaped steel And the cone to interconnect the first and second secondary rebars. Steps for installing a concrete composite beams in the beam, including coupling reinforcement are installed is buried in the discrete members; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; And Placing concrete on the deck plate; Slab structure construction method comprising a. H-shaped steel composed of an upper flange, a lower flange, and a web connecting the upper and lower flanges to each other, and the lower flanges of the H-shaped steel are installed at predetermined intervals along the longitudinal direction such that both ends thereof contact with both sides of the web. A plurality of hoop reinforcements, a concrete member integrally formed with the H-beams to bury at least a portion of the web and a lower flange, and a portion other than the upper portion of the hoop reinforcement, and at least one fixed in the longitudinal direction to the hoop reinforcement Concrete composite steel beam comprising a tension / compression reinforcing bar, the support for the deck plate installed on the upper surface of the concrete member and a support supporting the deck plate formed integrally with the bracket and embedded in the concrete member Installing; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; And Placing concrete on the deck plate; Slab structure construction method comprising a. The method of claim 12, The tensile / compression rebar includes at least one exposed reinforcing bar not embedded in the concrete member, Slab structure construction method characterized in that it further comprises a mounting member fixed to the upper edge of the hoop rebar so that the exposed reinforcing bar is coupled. The method of claim 13, The mounting member, The end is fixed to the top of the corner of the hoop reinforcement, the slab structure construction method characterized in that forming a 'L' shape so that the exposed reinforcement to the corner inner circumference. H-shaped steel consisting of an upper flange, a lower flange and a web connecting the upper flange and the lower flange to each other, and a plurality of hoop rebars installed at predetermined intervals along a longitudinal direction to surround the lower flange of the H-beam, and the hoop rebars. At least one tension / compression reinforcing bar fixed in a longitudinal direction, a connecting plate connected to an end of the H-beam, a plurality of extension bars having one end fixed to a front surface of the connecting plate and extending in a longitudinal direction, and the plurality of The extension bars of the secondary hoop reinforcement wrapped at a predetermined interval, at least one or more compression force transmission plate coupled to the other end of the extension reinforcement, the web, hoop reinforcement, auxiliary hoop reinforcement, at least a portion of the connecting plate and the The tension / compression rebar, at least one of the extension rebars and the lower flange are embedded And concrete members formed of an H-beam and integrally, comprising the steps of installing the beam concrete composite beams, which are installed on the upper surface of the concrete member includes a support for supporting the deck plate placed thereon; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; And Placing concrete on the deck plate; Slab structure construction method comprising a. H-shaped steel consisting of an upper flange, a lower flange and a web connecting the upper flange and the lower flange to each other, and a plurality of hoop rebars installed at predetermined intervals along a longitudinal direction to surround the lower flange of the H-beam, and the hoop rebars. At least one tension / compression reinforcing bar fixed in a longitudinal direction, a connecting plate connected to an end of the H-beam, a plurality of extension bars having one end fixed to a front surface of the connecting plate and extending in a longitudinal direction, and the plurality of An auxiliary hoop reinforcing bar and enclosing the extension bars at predetermined intervals, at least one compressive force transmission plate coupled to the other end of the extension bar, the web, the hoop bar, the auxiliary hoop bar and at least a portion of the connecting plate, and the At least one of the tension / compression rebar and the extension reinforcement and the lower flange A concrete member integrally formed with the H-shaped steel to be embedded, a support for supporting a deck plate disposed on and placed on an upper surface of the concrete member, a fixing portion embedded in an interior from an upper surface of the concrete member, and the fixing portion Installing a concrete composite beam comprising a reinforcing bar having an extension extending from the side to extend along the upper surface of the concrete member from; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; And Placing concrete on the deck plate; Slab structure construction method comprising a. H-shaped steel consisting of an upper flange, a lower flange and a web connecting the upper flange and the lower flange to each other, and a plurality of hoop rebars installed at predetermined intervals along the longitudinal direction to surround the lower flange of the H-beam, and the hoop rebars. At least one tension / compression reinforcing bar fixed in a longitudinal direction, a connecting plate connected to an end of the H-beam, a plurality of extension bars having one end fixed to a front surface of the connecting plate and extending in a longitudinal direction, and the plurality of An auxiliary hoop reinforcing bar and enclosing the extension bars at predetermined intervals, at least one compressive force transmission plate coupled to the other end of the extension bar, the web, the hoop bar, the auxiliary hoop bar and at least a portion of the connecting plate, and the At least one of tension / compression rebar and extension reinforcement and the lower plen A concrete member integrally formed with the H-shaped steel so that the ground is embedded, a support for supporting a deck plate disposed on and positioned on the upper surface of the concrete member, and a length of the concrete member embedded in the concrete member to be inscribed to the hoop reinforcement. A first auxiliary reinforcing bar and a second auxiliary reinforcing bar installed in the concrete member to be inscribed in the web of the H-beam and installed in the longitudinal direction, and embedded in the concrete member to interconnect the first and second auxiliary reinforcing bars. Installing a concrete composite beam including the binding reinforcing bars; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; And Placing concrete on the deck plate; Slab structure construction method comprising a. H-shaped steel composed of an upper flange, a lower flange, and a web connecting the upper and lower flanges to each other, and the lower flanges of the H-shaped steel are installed at predetermined intervals along the longitudinal direction such that both ends thereof contact with both sides of the web. A plurality of hoop bars, a connecting plate connected to an end of the H-shaped steel, a plurality of extension bars having one end fixed to a front surface of the connecting plate and extending in a longitudinal direction, and the plurality of extension bars Binding auxiliary hoop reinforcing bars, at least one compressive force transmission plate coupled to the other end of the extension reinforcing bars, the web, auxiliary hoop reinforcing bars, at least a portion of the connecting plate and at least one of the tension / compression reinforcing bars and extension reinforcing bars, And the lower flange is embedded and at the same time except the upper portion of the hoop rebar. A concrete member integrally formed with the H-shaped steel to bury the merged portion, at least one tension / compression rebar fixed in the longitudinal direction to the hoop reinforcement, and a deck plate installed on and placed on an upper surface of the concrete member. Installing a concrete composite beam having a supporting support; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; And Placing concrete on the deck plate; Slab structure construction method comprising a. H-shaped steel composed of an upper flange, a lower flange, and a web connecting the upper and lower flanges to each other, and the lower flanges of the H-shaped steel are installed at predetermined intervals along the longitudinal direction such that both ends thereof contact with both sides of the web. A plurality of hoop bars, a connecting plate connected to an end of the H-shaped steel, a plurality of extension bars having one end fixed to a front surface of the connecting plate and extending in a longitudinal direction, and the plurality of extension bars being wrapped at a predetermined interval to be bound At least one compressive force transmission plate coupled to the other end of the extension bar, the web, the auxiliary hoop bar, at least a portion of the connecting plate, at least one of the tension / compression bar and the extension bar; The lower flange is buried at the same time the remaining portion except the upper portion of the hoop rebar A concrete member integrally formed with the H-shaped steel to bury the at least one, at least one tension / compression rebar fixed in the longitudinal direction to the hoop reinforcement, and a support for supporting a deck plate installed on the upper surface of the concrete member; A first auxiliary reinforcement embedded in the concrete member to be inscribed to the hoop reinforcement and installed in the longitudinal direction, and a second auxiliary reinforcement embedded in the concrete member to be inscribed in the longitudinal direction to be inscribed in the web of the H-shaped steel; And installing concrete composite beams including binding bars embedded in the concrete member so as to interconnect the first and second auxiliary bars. Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; And Placing concrete on the deck plate; Slab structure construction method comprising a. The method according to any one of claims 1 to 19, The deck plate is placed on the support welded slab structure construction method, characterized in that the weld. delete The method of claim 1, Slab structure construction method characterized in that the end of the buried member is fixed to the lower flange of the H-shaped steel. The method according to any one of claims 1 to 19, The concrete member is a slab structure construction method characterized in that the upper surface forms a cross section of a trapezoidal shape wider than the lower surface. The method according to any one of claims 1 to 19, The concrete composite beam is a slab structure construction method further comprising a cover member installed in the longitudinal direction to surround the side and the lower surface of the concrete member. The method of claim 24, The cover member is a slab structure construction method characterized in that made of synthetic resin containing carbon fiber FRP or glass fiber FRP. The method of claim 15, wherein The concrete composite beam is a slab structure construction method characterized in that the mounting on the support bracket installed on the column. The method of claim 12, The concrete composite beam, A first auxiliary reinforcing bar embedded in the concrete member to be inscribed in the hoop reinforcement and installed in the longitudinal direction, and a second auxiliary reinforcing bar embedded in the concrete member and installed in the longitudinal direction to be inscribed in the web of the H-beam; And And a binding bar embedded in the concrete member so as to interconnect the first and second auxiliary bars. The method according to any one of claims 1 to 19, The concrete composite steel beam, the slab structure construction method characterized in that it further comprises a corner member installed in the longitudinal direction along the lower corner portion of the concrete member. The method according to any one of claims 1 to 19, The corner member is a slab structure construction method characterized in that made of any one of a synthetic resin or steel material including carbon fiber FRP or glass fiber FRP. The method according to any one of claims 1 to 19, The slab structure construction method characterized in that a plurality of through-holes are formed in the web of the H-shaped steel so that concrete can penetrate. H-shaped steel consisting of an upper flange, a lower flange and a web connecting the upper flange and the lower flange to each other, and a plurality of hoop rebars installed at predetermined intervals along a longitudinal direction to surround the lower flange of the H-beam, and the hoop rebars. At least one tension / compression reinforcing bar fixed in a longitudinal direction, a connecting plate connected to an end of the H-beam, a plurality of extension bars having one end fixed to a front surface of the connecting plate and extending in a longitudinal direction, and the plurality of An auxiliary hoop reinforcing bar and enclosing the extension bars at predetermined intervals, at least one compressive force transmission plate coupled to the other end of the extension bar, the web, the hoop bar, the auxiliary hoop bar and at least a portion of the connecting plate, and the At least one of the tension / compression rebar and the extension reinforcement and the lower flange A concrete member integrally formed with the H-shaped steel to be embedded, a support for supporting a deck plate disposed on and placed on an upper surface of the concrete member, a fixing portion embedded in an interior from an upper surface of the concrete member, and the fixing portion A joint reinforcing bar having an extension extending laterally along the upper surface of the concrete member from the upper surface of the concrete member; And a second auxiliary reinforcing bar embedded in the concrete member and installed in the longitudinal direction so as to be inscribed therein, and a binding reinforcing bar embedded in the concrete member so as to interconnect the first and second auxiliary reinforcing bars. Installing; Installing a deck plate on an upper surface of the support of the concrete member; Reinforcing reinforcing bars on both sides of the H-beam; And Placing concrete on the deck plate; Slab structure construction method comprising a. The method of claim 11, Reinforcing the connecting reinforcing bar is disposed so that at least one end is adjacent to the reinforcing bars so as to transfer the axial stress of the reinforcing bars on one side of the H-beams to the reinforcing bars on the opposite side; Structure construction method. The method of claim 32, wherein the connecting reinforcing bar, Slab structure construction method characterized in that the reinforcement across the upper flange of the H-beam. The method of claim 32, wherein the connecting reinforcing bar, Slab structure construction method characterized in that the reinforcement to penetrate the through-hole formed in the web of the H-shaped steel. The method of claim 32, wherein the connecting reinforcing bar, A slab structure construction method comprising a U-shape, an end portion of which is adjacent to an end portion of the reinforcing bars adjacent to each other, and a central portion thereof is installed or fixed to be close to the H-beam. The method of claim 32, wherein the connecting reinforcing bar, A L-shape, one end of which is close to the end of the reinforcing bars, the other end is installed or fixed to the H-shaped steel, characterized in that the slab structure construction method.

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