KR20120006726A - Coupling Structure of Deck Plate and Steel Beams Using Shear Connector-shaped Fixing Members and Composite Beams accordingly - Google Patents

Abstract

The present invention relates to a combined structure of the deck plate and the steel beam and the composite beam according to the deck plate using a fixed member that can be stored in a layer height is coupled to the suspended form of the steel plate. The coupling structure of the deck plate and the steel beam includes a steel beam consisting of an upper flange, a web, and a lower flange; A fixing member having a portion coupled to the upper flange such that at least a portion thereof protrudes in a direction parallel to the width of the upper flange and at the same time protruding upward from the plane of the upper flange; And a deck plate on which the bottom surface is fixed to the fixing member.

Description

Coupling Structure Between Deck-plate with Shear Connector Shape Fixing Member and Steel Beam and Composite Beam According to the Same}

The present invention relates to a coupling structure of the deck plate and the steel beam using a fixing member and a composite beam according to the above, and specifically, the deck plate and the steel beam coupling using a fixing member that can be reduced in height by combining the deck plate suspended in the steel beam It relates to a structure and thus a composite beam.

Composite beams are roughly divided into embedded composite beams in which the steel beams are completely covered with concrete, and exposed composite beams in which a slab is synthesized on top of the steel beams.

If the embedded composite beam shown in Fig. 9a satisfies the coating thickness defined in the norm, the composite composite behaves perfectly in the absence of a separate shear connector but has disadvantages in terms of construction and economics.

On the other hand, the exposed composite beam shown in FIG. 9B has an advantage that it can be used in a relatively long span at a light weight while having high load carrying capacity and rigidity in a manner of maximizing moment performance by constructing a concrete slab on the upper part of the steel beam. In addition, when the composite slab with the deck plate is used together, there is an advantage that construction properties can be greatly improved because a separate temporary material is not required. However, since the slab is constructed on the upper part of the steel beam, there is a problem that the layer height increases and local buckling may occur in the fireproof coating, the upper compression flange of the steel beam and the web.

In order to solve this problem, as shown in Figure 9c, the floor slab is made in the form of a deep deck plate or hollow precast concrete slab so that the floor slab is constructed in the steel beam dance, such a floor slab Slim floor method was developed to enlarge the bottom flange width of steel beams to make the steel beams asymmetrical. However, the slim floor system has a problem in that it is difficult to be applied to various architectural structures because the dance of the applicable slab system is limited and thus the span is limited.

The present invention is to solve the problems of the prior art has the following object.

An object of the present invention can fully reflect the physical properties such as tensile strength of galvanized steel sheet, which is a constituent material of the deck plate, and excellent local buckling prevention effect due to concentrated load at the end than the deck plate to be mounted, and may occur during site mounting and installation It is possible to converge the error, and there is no need for a separate shear connection material, which reduces the quantity, increases the constructability, shortens the air, and makes it easy to mount and install it on the composite beam placed in the inclined direction. It is to provide a bonding structure and a composite beam accordingly.

According to a preferred embodiment of the present invention, the coupling structure of the deck plate and the steel beam comprises a steel beam consisting of an upper flange, a web and a lower flange; A fixing member having a portion coupled to the upper flange such that at least a portion thereof protrudes in a direction parallel to the width of the upper flange and at the same time protruding upward from the plane of the upper flange; And a deck plate on which the bottom surface is fixed to the fixing member.

According to another suitable embodiment of the present invention, the steel beam is an H-beam.

According to another suitable embodiment of the invention, the fixing member is coupled to the upper plane or the lower plane of the upper flange.

According to another suitable embodiment of the present invention, the fixing member has a curved bar shape or a T shape.

According to another suitable embodiment of the present invention, the coupling structure of the deck plate and the steel beam is bent at one end of the top flange, the web and the web and vertically bent from both ends of the bottom and bottom surfaces parallel to the top flange. A steel beam comprising a lower flange having a side wall extending in a direction and a support wing extending in a direction parallel to the upper flange at an end of the side wall; A fixing member having a portion coupled to the support wing such that at least a portion thereof protrudes in a direction parallel to the width of the upper flange and at the same time protruding upward in the plane of the support wing; And a deck plate on which the bottom surface is fixed to the fixing member.

According to another suitable embodiment of the invention, the fixing member is coupled to the upper plane or the lower plane of the support wing.

According to another suitable embodiment of the present invention, the coupling structure of the deck plate and the steel beam is composed of an H-beam beam consisting of an upper flange, a web and a lower flange, an upper flange and a web, and perpendicular to a plane of the upper flange of the H-beam beam. A steel beam assembly consisting of a T-beam having a web coupled thereto; A fixing member having a portion coupled to the upper flange of the T-beams such that at least a portion thereof protrudes in a direction parallel to the width of the upper flange of the T-beams, while simultaneously protruding upwards in the plane of the support wing; And a deck plate on which the bottom surface is fixed to the fixing member.

According to another suitable embodiment of the present invention, the composite beam is suspended by a deck plate from the upper flange to the lower flange by means of a fixing member having a vertically extending portion protruding upward in the steel beam consisting of the upper flange, the web and the lower flange. It includes a slab concrete that is structured and filled in the spaces between the deck plates and which is cast integrally over the upper flange of the steel beam.

  Coupling structure according to the present invention has the advantage that it is possible to increase the number of floors are applied to the building is limited in height due to the floor height reduction while reducing the height of the vertical structural member and the exterior material compared to the normal steel frame. In addition, it is possible to shorten the construction period from the viewpoint of construction and have a merit of synthesizing without the shear connector. In addition, the coupling structure according to the present invention has the advantage that it is possible to ensure a high performance of fire-resistant performance and to ensure the structural integration secured while being made of a lightweight structure. In addition, the present invention has the advantage that can be effectively applied to the long span structure.

The following drawings, which are attached in the present specification, illustrate exemplary embodiments of the present invention, and together with the detailed description of the present invention, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
Figures 1a, 1b and 1c respectively show an embodiment of the method of fixing the fixing member to the steel beams, the deck plate and the coupling structure coupled to the steel beams according to the present invention.
2A and 2B show another embodiment of the coupling structure according to the present invention.
3A and 3B show an embodiment of the coupling structure in which the fixing member is fixed to both portions of the upper plane of the upper flange.
4A and 4B show an embodiment of the coupling structure in which the fixing member is fixed to both portions of the lower plane of the upper flange.
Figure 5a shows an embodiment in which the molded steel sheet assembled steel beam is manufactured, respectively.
Figure 5b shows an embodiment in which the fixing member is coupled to the formed steel sheet assembled steel beam.
Figure 5c illustrates an embodiment in which the deck plate is coupled to the formed steel sheet assembled steel beams.
6A and 6B illustrate another embodiment in which a fixing member is coupled to a formed steel plate assembled steel beam.
7 is a cross-sectional view showing an embodiment of the coupling structure in which the deck plate is fixed to the steel beam assembly steel beam.
FIG. 8A is a view showing a state in which a tension member is disposed in a steel beam, and FIG. 9B is a view showing a state in which concrete is synthesized in a web of the steel beam.
9a to 9c show examples of known synthetic beams.

In the following the present invention will be described in detail with reference to the embodiments presented in the accompanying drawings, but the embodiments presented are illustrative for a clear understanding of the invention and are not intended to limit the scope of the invention.

Figures 1a, 1b and 1c respectively show an embodiment of a method of fixing the fixing member to the steel beam, the deck plate and the coupling structure coupled to the steel beam according to the present invention.

(A), (b) and (c) of FIG. 1A show a cross-sectional view, a perspective view, and a side view, respectively, in which the fixing member 12 is coupled to the steel beam 11.

1A, 1B and 1C, the coupling structure includes a steel beam 11 consisting of an upper flange 111, a web 113, and a lower flange 112; A fixing member 12 having a portion which is coupled to the upper flange 111 so that at least a portion thereof protrudes in a direction parallel to the width of the upper flange 111 and at the same time protrudes upward from the plane of the upper flange 111; And a deck plate 13 on which the bottom surface 132 is fixed to the fixing member 12.

The steel beam 11 may be an H-beam consisting of an upper flange 111, a lower flange 112, and a web 113, but is not limited thereto, and may be any type of steel beam used for composite beams. The upper flange 111 and the lower flange 112 of the steel beam 11 may be a symmetrical or asymmetrical shape.

The plurality of fixing members 12 may be coupled to the upper flange 111 at regular intervals. The fixing member 12 has a function of hanging and fixing the deck plate 13 to the steel beam 11 and at the same time has a function of imparting a synthetic action to the coupling structure. For this purpose, as shown in FIG. 1A, the fixing member 12 has a vertical portion extending vertically with respect to the horizontal portion 121 in the same or similar shape as the horizontal portion 121 extending in the shape of a rod having a rectangular cross section. 122). The horizontal portion 121 and the vertical portion 122 do not necessarily have to be at right angles and can be made integral or made separately and combined. The horizontal portion 121 may protrude from the upper flange 111 by a predetermined length in a direction perpendicular to the longitudinal direction of the upper flange 111, and the vertical portion 122 may be connected to the horizontal portion 121 to be horizontal. It may be coupled to the upper plate 111 to protrude from the portion 121 to a predetermined length in an upward direction from the upper plane of the upper flange 111. The horizontal portion 121 of the fixing member 12 may be made of the same or similar material as the steel beam 11 and may be firmly fixed to the upper flange 111 in a manner such as welding. In the embodiment shown in FIG. 1A, the plurality of fixing members 11 are arranged at regular intervals on the upper surface of the upper flange 111 while having a curved bar shape, but the shape, the disposition interval, or the fixing position of the fixing members 11 is a deck. It may be appropriately determined depending on the structure of the plate 13 or the manner of joining. The substantially vertical portion 122 may have the function of a stud bolt installed to increase the synthesizing effect between the upper flange 111 and the slab concrete.

FIG. 1B illustrates a perspective view of the deck plate 13 and (B) a cross-sectional view, respectively. The deck plate 13 has one bottom surface 132 having a rectangular cross-sectional shape with one side open as a whole. And two side surfaces 131. Various types of protrusions E may be formed on the side surfaces 131 and the bottom surface 132 to prevent slipping of the slab concrete. Connection ends 131a and 131b may be formed at end portions of the side surfaces 131. One connecting end 131a extends the end of the side surface 131 entirely outwardly and is bent back toward the bottom surface 132 and finally is folded back inward to extend the closed connecting end 131a. Can be formed. The other connecting end 131b extends the connecting end 131b which is open while the end portion of the side 131 extends outward as a whole and is bent again toward the bottom surface 132 and finally is folded outward again. Can be formed.

The structure of the deck plate 13 shown in FIG. 1B is exemplary and the deck plate 13 applied to the coupling structure according to the present invention may have various structures and have connection ends 131a and 131b of various shapes. Can be.

The deck plate 13 shown in FIG. 1B may be connected to the steel beam 11 illustrated in FIG. 1A.

As shown in FIG. 1C, the deck plate 13 may be coupled in a shape suspended from the steel beam 11. Specifically, the bottom surface 132 of the deck plate 13 is fixed to the fixing member 12 fixed to the upper flange 111 so that the connecting ends 131a and 131b of the deck plate 13 are lower flanges. It is positioned above 112. The slab concrete 14 is filled in the space between the deck plates 13. An end closing (not shown) may be coupled to the open surface of the deck plate 13. If necessary, the deck plate 13 may be firmly coupled to the fixing member 12 by welding or bolts. As such, the deck plate 13 may be a medal-shaped structure between the upper flange 111 and the lower flange 112 to reduce the height of the floor.

Hereinafter, another embodiment of the coupling structure in which the deck plate is coupled to the steel beam according to the present invention will be described.

2A and 2B show another embodiment of the coupling structure according to the present invention.

(A), (b) and (c) of FIG. 2A show front, perspective and side views of the shape in which the fixing member 12a is coupled to the steel beam 11, respectively.

Referring to FIG. 2A, the horizontal portion 121a of the fixing member 12a has a rod shape extending longer than the width of the upper flange 111 so as to be arranged along the width direction and partially protrude to both sides of the upper flange 111. And the vertical portion 122a is coupled to the central portion of the horizontal portion 121a and protrudes by a predetermined length in the upward direction of the upper flange 111. The horizontal portion 121a may be fixed to the upper surface of the upper flange 111 in the same manner as welding and the vertical portion 122a may be manufactured integrally with the horizontal portion 121a or separately manufactured to be horizontal in the same manner as welding. It may be coupled to the portion 121a.

Referring to FIG. 2B, the deck plate 13 has a structure similar to that shown in FIG. 1B and is coupled in a form suspended from the steel beam 11, and the coupling structure has a structure similar to that of the embodiment shown in FIG. 1C as a whole. However, in the coupling structure shown in FIG. 2B, a single fixing member 12a is fixed across the entire upper surface of the upper flange 111 so that the coupling member 12a and the steel beam 11 are compared with each other in the coupling structure shown in FIG. 1C. Has the advantage of increasing the bonding strength.

3A and 3B show an embodiment of the coupling structure in which the fixing member 12b is fixed to both portions of the upper plane of the upper flange 111.

3A and 3B, the fixing members 12b may be made in a T shape and two may be paired and arranged on the same line along the width direction. Each of the pair of fixing members 12b has a horizontal portion 121b protruding outward from the upper flange 111 in opposite directions to each other and at the same time vertically protrudes upwardly with respect to the horizontal portion 121b. It may have a portion 122b. The plurality of fixing members 12b may be arranged in pairs at regular intervals in the longitudinal direction of the upper flange 111.

4A and 4B show an embodiment of the coupling structure in which the fixing member 12b is fixed to both portions of the lower plane of the upper flange 111.

4A and 4B differ only in the position where the horizontal member 121b is coupled to the upper flange 111 when compared with the embodiment shown in FIGS. 3A and 3B. The fixing member 12b as described above may be combined with the upper flange 111 in various shapes while having various shapes.

Various coupling structures in which deck plates are coupled to steel beams have been described above. Each embodiment may be appropriately selected according to the construction environment, and the fixing member or the deck plate may be appropriately modified and applied as necessary.

Figures 5a, 5b and 5c is a structure in which the fixed member is coupled to the formed steel sheet assembled steel beams, formed steel sheet assembled steel beams applied to the coupling structure according to the present invention and the coupling structure is fixed to the deck plate on the formed steel sheet assembled steel beams Examples of each are shown.

5A and 5B respectively show an embodiment in which a molded steel sheet-assembled steel beam 51 is manufactured.

Formed steel sheet assembled steel beam 51 refers to a steel beam produced by joining a pair of bent steel sheet and may have a structure as shown in Figure 5a. Specifically, the formed steel plate assembled steel beam 51 is coupled to one end of the web 513 and the web 513 extending along a surface perpendicular to the upper flange 511, the upper flange 511 and the upper flange 511. It can be configured by joining a pair of formed steel sheet consisting of a lower flange 512 having a parallel bottom surface 512a. The bottom flange 512 is bent vertically from both ends of the bottom surface 512a joined to one end of the web 513 and bottomed from the end of the side wall 512b and the side wall 512b extending in the direction of the upper flange 511. And a support wing 512c extending outwardly in a direction parallel to the surface 512a or the upper flange 511.

As shown in (a) and (b) of FIG. 5A, the shaped steel sheet assembly steel beam may be made in a manner in which a symmetrical structure is combined or in a manner in which a T-shaped structure and a U-shaped structure are combined, but are not limited thereto. Various types of fixing members 12 may be coupled to the formed steel plate assembled steel beams, and the deck plate 13 may be coupled to the fixing members 12 to form a coupling structure.

5B and 5C illustrate an embodiment in which the fixing member 12 is coupled to the formed steel plate assembled steel beam 51.

Referring to FIG. 5B, the fixing member 12 may be fixed to the upper surface of the support wing 512c. The shape, arrangement or fixing method of the fixing blade 12 is the same as that described in FIG. 1A or 1B except that the fixing position of the fixing member 12 becomes the supporting blade 512c, which is different from the embodiment related to the H-beam. . When the fixing member 12 is fixed to the support wing 512c, the deck plate 13 may be coupled to the fixing member 12 as shown in FIG. 5C. The deck plate 13 may have the same or similar structure as that shown in FIG. 1B. The deck plate 13 is suspended from the support wing 512c and the bottom surface of the deck plate 13 is positioned above the bottom surface 512a of the lower flange 512. When the deck plate 13 is coupled to the support wing 512c by the fixing member 12, a coupling structure according to the present invention is formed.

In FIG. 5A, the support wing 512c may be extended outwardly from the formed steel sheet-assembled steel beam 51, but the support wing 512c may extend inward and thus, the fixing member 12 and the deck The plate 13 may be coupled to the formed steel plate assembled steel beam 51 in a suitable manner.

As with the H-beams, the fixing member may be coupled to the formed steel plate assembled steel beams in various ways, and thus the deck plate may be fixed.

6A and 6B illustrate an embodiment similar to FIGS. 3A and 3B.

6A and 6B, a pair of fixing members 12b having a T-shape are fixed to the lower plane of the support wing 512c, respectively, and a plurality of pairs of fixing members 12b are formed on the upper flange 111. The longitudinal direction or the longitudinal direction of the support blade 512c may be arranged at regular intervals. The deck plate 13 may be coupled to the horizontal portion 121b of the fixing member 12b fixed to the support wing 512c. As such, the coupling structure according to the present invention may be made by coupling a fixing member of a suitable shape to various types of steel beams and fixing the deck plate by hanging the fixing plate. The H-beam or shaped steel sheet assembled steel beam presented above is exemplary and the shape of the fixing member is for convenience of description of the present invention, and the present invention is not limited by the shape of the steel beam or the fixing member.

The coupling structure according to the present invention can be applied to steel beams in which two beams are assembled, as described below, in addition to the H-beams and the steel plate-assembled steel beams. In the following description about the same configuration as the above-described embodiments as much as possible will be omitted.

7 is a cross-sectional view showing an embodiment of the coupling structure in which the deck plate is fixed to the steel beam assembly steel beam.

Referring to FIG. 7, an upper flange 621 and a web 622 are attached to an upper flange 611 of an H-beams 61 having an upper flange 611, a web 612, and a lower flange 612. The web 622 of the T-beams 62 having the () is vertically coupled to the plane. The fixing member 12 may be fixed to the upper flange 621 of the T-beams 62. The shape, arrangement or fixing method of the fixing member 12 is the same as that described in FIG. 1A or 1B except that the fixing position of the fixing member 12 becomes the upper flange 621 of the T-beams 62. It is different from the embodiment composed of the bowman. When the fixing member 12 is fixed to the upper flange 621 of the T-beams 62, the deck plate 13 may be coupled to the fixing member 12. The deck plate 13 may have the same or similar structure as that shown in FIG. 1B. The deck plate 13 is suspended from the upper flange 621 of the T-beams 62, the bottom surface of the deck plate 13 is higher than the bottom surface of the upper flange 611 of the H-beams 61. It is located at. When the deck plate 13 is coupled to the upper flange 621 of the T-beams 62 by the fixing member 12, a coupling structure according to the present invention is formed.

Although not shown, the shaped steel beams according to the present exemplary embodiment may be configured similarly to the embodiment similar to FIG. 2B and the embodiment similar to FIG. 3B, similarly to the molded steel sheet-assembled steel beams described above.

The composite beam can be made by reinforcing the reinforcing bar in the coupling structure according to the present invention and pouring concrete. The composite beam is fixed to the steel plate consisting of the upper flange, the web and the lower flange, the deck plate is suspended from the upper flange to the lower flange, the space surrounded by the bottom and side of the deck plate is filled with slab concrete .

Such a structure has the advantage that the composite beam having a lower floor height than the general steel frame structure is possible to reduce the vertical structural members and exterior materials, and to increase the number of floors is applied to buildings with a limited height due to the floor height reduction. In addition, the composite beam according to the present invention has the advantage that the construction time is simple and the construction period can be shortened while the use of materials is reduced to reduce the construction cost.

And in order to effectively apply the composite beam according to the present invention in the long span can be placed in the steel beam tension material and reinforced by introducing a prestress or composite with concrete.

FIG. 8A is a view showing a state in which a tension member is disposed in a steel beam, and FIG. 9B is a view showing a state in which concrete is synthesized in a web of the steel beam.

8A, a pair of tension members 71 are disposed on both sides of the web 113 of the steel beams 11, and both ends of the tension members 71 are fixed to the ends of the steel beams 11 (not shown). Settle through). The number and arrangement of the tension members 71 are not limited to those shown, and the tension and fixation methods of the tension members 71 may employ any method known in the art.

As shown in FIG. 8B, the reinforced concrete 72 may be synthesized in a space surrounded by the upper flange 111, the lower flange 112, and the web 113 of the steel beam 11. At this time, the upper flange 111, the lower flange 112 and the web 113 is a rough finish or the shear connector on the surface for the synthesis of the reinforced concrete 72 and the steel beam 11 in contact with the concrete 72 (Not shown) can be installed.

Meanwhile, although FIG. 8A and FIG. 8B show a state applied to the embodiment shown in FIG. 1A, the same may be applied to the remaining embodiments.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is only limited by the scope of the appended claims.

11; Steel beam
12: fixing member
13: Deck Plate
14: Shear connector
15: slab concrete

Claims (16)

Steel beams consisting of an upper flange, a web, and a lower flange;
A fixing member having a portion coupled to the upper flange such that at least a portion thereof protrudes in a direction parallel to the width of the upper flange and at the same time protruding upward from the plane of the upper flange; And
Coupling structure of deck plate and steel beam, which consists of deck plate which is fixed to fixing member so that bottom surface is located above upper flange. The structure of claim 1, wherein the steel beams are H-beams. The structure of claim 1, wherein the fixing member is coupled to an upper plane or a lower plane of the upper flange. The coupling structure of a deck plate and steel beams of Claim 1 which becomes a curved rod shape or T shape. Bent at one end of the top flange, web and web to extend in a direction parallel to the top flange at the end of the side wall and the side wall extending in the direction of the top flange, perpendicularly bent from both ends of the bottom and parallel to the top flange. Steel beams consisting of a lower flange with supporting wings;
A fixing member having a portion coupled to the support wing such that at least a portion thereof protrudes in a direction parallel to the width of the upper flange and at the same time protruding upward in the plane of the support wing; And
Coupling structure of deck plate and steel beam, which consists of deck plate which is fixed to fixing member so that bottom surface is located above upper flange. 6. The coupling structure of deck plate and steel beams according to claim 5, wherein the fixing member is coupled to the upper plane or the lower plane of the support wing. 6. The coupling structure of a deck plate and steel beams according to claim 5, wherein the fixing member has a curved bar shape or a T shape. An H-shaped steel beam consisting of an H-beam consisting of an upper flange, a web and a lower flange, and a T-beam consisting of an upper flange and a web, and a T-beam having a web coupled to a surface perpendicular to an upper flange of the H-beam;
A fixing member having a portion coupled to the upper flange of the T-beams such that at least a portion thereof protrudes in a direction parallel to the width of the upper flange of the T-beams, while simultaneously protruding upwards in the plane of the support wing; And
Coupling structure of deck plate and steel beam which consists of deck plate which bottom surface is fixed to fixing member. The coupling structure of the deck plate and the steel beam of claim 8, wherein the fixing member is coupled to an upper plane or a lower plane of the upper flange of the T-beam. The coupling structure of a deck plate and steel beams of Claim 8 which becomes a curved rod shape or T shape. The deck plate is structured to hang from the upper flange to the lower flange by means of a fixing member having a vertically extending portion protruding upward in the steel beam consisting of the upper flange, the web and the lower flange, and filling the inside of the deck plate. Composite beam comprising slab concrete integrally cast on the upper flange. The composite beam according to claim 11, wherein the steel beam is an H-beam. 12. The top flange of claim 11, wherein the steel beam is joined to one end of the top flange, web and web and bent vertically from both ends of the bottom and bottom surfaces parallel to the top flange and extending in the direction of the top flange and the top flange at the end of the side wall. Composite beam comprising a lower flange having a support wing extending in a direction parallel to the. 12. The steel beam of claim 11, wherein the steel beam comprises an H-beam consisting of an upper flange, a web, and a lower flange, and a T-beam consisting of an upper flange and a web and of which a web is coupled perpendicularly to a plane to an upper flange of the H-beam. Composite beam. The composite beam according to any one of claims 11 to 14, wherein the steel beam is reinforced with a tension member. The composite beam according to any one of claims 11 to 14, wherein reinforcement concrete is synthesized on both sides of the web of the steel beam.

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