KR100887389B1 - Complex slab girder for slim floor - Google Patents

Abstract

A story height reducing synthesis slab girder is provided that the complete synthetic structure can be formed since sliding is not generated in the junction of concrete. A story height reducing synthesis slab girder comprises a beam(110), a deck(130) arranged between beams, and a deck support steel reinforcing(150) supporting the deck. The deck includes a bottom plate, first and second side plates which is curve-cut in both ends of bottom plate, and first and second joints which is curve-cut in the side plate.

Description

Floor-saving synthetic slab girder {COMPLEX SLAB GIRDER FOR SLIM FLOOR}

The present invention relates to a composite slab girder that can act as a shear force reinforcement, stud reinforcement by forming a reinforcing bar, discontinuous section as a continuous section as well as reducing the floor height by mounting a deck on the rebar welded to the upper surface of the beam.

In the case of the volume ratio, maximum height limit, and altitude restriction of buildings for general commercial and residential purposes, if the old building requires extension and algebra (remodeling) that is legal in accordance with the current law, height restrictions on other buildings such as parking lots (workpieces) 8M or less), in order to solve this problem, a conventional slab-saving synthetic slab girder, which differs slightly depending on the shape of the beam, but in the H-beam type beam, the deck is mounted on the lower flange of the H-beam or the web There is a method of fixing the intermediate flange in the installation by sandwiching the pallet between the upper flange and the lower flange.

However, there is a hassle to weld-fix a separate flange for a separate mounting on the H-beam, and the space may be narrow in the mounting of decks or pallets, so construction may take time.

In addition, there is a problem that it is difficult to apply the height reduction applied to the H-beam as it is to other types of beams.

In addition, the H-beam and the deck form a discontinuous section, which is vulnerable to shear force.

The present invention has been made to solve the above-described problem, the object of the present invention is to provide a floor-saving slab girder that can be applied to all beam shapes to not only reduce the floor height but also reinforce discontinuous sections.

In order to achieve the above object, the high-layer composite slab girder described in claim 1 of the present invention,
Beams 110, 210, 310, 410; A deck 130 disposed between the beam and the beam; It is welded to the upper surface of the beam includes a deck reinforcing bar 150 to mount the deck,
The deck includes a bottom plate 131, first and second side plates 133 and 135 formed at both ends of the bottom plate, and first and second joints 137 and 139 formed at each side plate. Composed,
The deck reinforcing bar is placed through the first and second joints,

The first joint is bent to the inside of the first side plate, and the second joint is bent to the outside of the second side plate.

According to this configuration, since the deck reinforcing bar is welded and fixed on the upper surface of the beam, it is possible to secure sufficient working space to realize the floor height reduction, and to make the discontinuous section (fragment of shear force weak) between the beam and the deck. Formed in a continuous section to strengthen the shear force to increase the bending stiffness.

The layer height saving synthetic slab girder according to claim 2 of the present invention,

The deck reinforcing bar is a round bar, and the end of the deck reinforcing bar is a bent form of a bent down.

According to this configuration, unlike the deformed reinforcing bar, because it is welded by a private round bar, the welding area between the beam and the round bar is sufficiently secured to ensure excellent weldability and bondability, and the end of the deck reinforcing bar acts as a stud so that the joint surface of the concrete Sliding does not occur at the edges to form a complete composite structure.

The layer height saving synthetic slab girder according to claim 3 of the present invention,

The beam is an upper open steel beam (TSC beam), the left and right upper flange, the left and right lower flange, the left and right lower flange, the left and right web connecting the left and right upper flange and the left and right lower flange, the round bar is welded and bent vertically upward from the left and right lower flange The left and right vertical bending pieces are formed and welded, and the left and right horizontal bending pieces are formed horizontally bent from the left and right vertical bending pieces.

According to this construction, the inside of the upper open steel beam is filled with concrete and integrated with the slab, and the outer steel acts as a reinforcing bar to increase the efficiency of the cross section by increasing the efficiency of the cross section, and the horizontal bending piece also acts as a stud, thereby completing the composite structure with the concrete. To form.

As apparent from the above description, according to the layer-saving synthetic slab girder according to the present embodiment, the following effects are obtained.

As the deck reinforcing bar is welded and fixed on the upper surface of the beam, it is possible to secure enough working space and realize the floor height reduction, and the deck reinforcing bar is formed as the continuous section by forming the discontinuous section (weak shear force section) between the beam and the deck. Strengthen the shear force to increase the bending stiffness.

In addition, unlike the deformed reinforcing bar, because it is welded by a round bar, which is a private magnet, the welding area between the beam and the round bar is sufficiently secured to ensure excellent weldability and bondability.

In addition, the end of the deck reinforcing bar acts as a stud so that no sliding occurs in the joint surface of the concrete to form a complete composite structure.

In addition, by filling the interior of the upper open steel beam with concrete and integrated with the slab, the outer steel serves as a reinforcing bar to increase the efficiency of the cross section to increase the bending rigidity.

In addition, the horizontal bending piece also acts as a stud to form a complete composite structure with concrete.

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

First embodiment  : Floor  Low cost synthetic slab TSC Girder

Modification Example 1

1 is a perspective view showing a layer height saving synthetic slab TSC girder according to a first modification of the first preferred embodiment of the present invention, Figure 2 is a side view showing the deck of Figure 1, Figure 3 is a TSC of Figure 1 Front sectional drawing which shows the state which completed the construction to a girder, FIG. 4 is a side sectional view of FIG.

As shown in FIG. 1, the floor height saving synthetic slab TSC girder 100 according to the first modification of the first embodiment is disposed between the TSC beam 110, the TSC beam 110, and the TSC beam 110. The deck 130 and the TSC beam 110 is welded and fixed to the deck reinforcing bar 150 to mount the deck 130.

TSC beam 110 is integrated with the slab by filling concrete in the formwork of the upper open steel beams consisting of the upper and lower flanges and the left and right webs, the shell steel acts as a reinforcing bar to increase the efficiency of the cross section to increase the bending rigidity and reduce the height of the floor Possible synthetic beams.

That is, the TSC beam 110 has left and right upper flanges 111 and 112, upper and lower lower flanges 113 and 114, left and right upper flanges 111 and 112, and left and right webs 115 and 116 connecting the left and right lower flanges 113 and 114, which are arranged to be opened upward. The left and right vertical bending pieces 117 and 118 formed vertically bent upward from the left and right lower flanges 113 and 114, and the left and right horizontal bending pieces 119 and 120 formed horizontally bent from the left and right vertical bending pieces 117 and 118, respectively.

The left upper flange 111 and the lower upper flange 112 are configured not to be in contact with each other, and are configured in an upper open type to fill concrete therebetween.

The left and right webs 115 and 116 function as a finishing plate for closing the left and right ends of the side of the deck to be described later, it can be prevented from flowing down during concrete pouring. Of course, you may install a separate finishing board in the right and left both ends of the deck.

The left vertical bending piece 117 and the right vertical bending piece 118 are fixed to each other by welding. Thus, the bottom is hermetic.

The left and right horizontal bending pieces 119 and 120 are preferable in terms of forming a complete composite structure by acting as a stud when the concrete is filled so that sliding does not occur in the joint surface with the concrete.

As shown in FIG. 2, the deck 130 is bent on the bottom plate 131 and the first and second side plates 133 and 135 and side plates 133 and 135 that are bent at both ends of the bottom plate 131. And second joints 137 and 139.

The first joint 137 is bent in a channel shape in a direction toward the bottom plate 131, and the second joint 139 is bent in a channel shape in a direction away from the bottom plate 131.

That is, the first joint 137 is formed inside the first side wall 133, and the second joint 139 is formed outside the second side wall 135.

Due to this shape, when a plurality of decks 130 are disposed between the TSC beam 110 and mounted on the deck reinforcing bar 150, the deck deck reinforcing bar 150 except for the deck at the front and rear ends The first joint 137 and the second joint 139 overlap each other.

In addition, the joints 137 and 139 are formed toward the inside of the deck 130, so that they also penetrate into the joints 137 and 139 when the concrete is placed and are coupled with the studs 151.

Bead plate embossing 132 is formed in the bottom plate 131 to increase the strength and bonding strength with the concrete.

Deck reinforcing bar 150 is disposed at predetermined intervals in a direction perpendicular to the longitudinal direction of the TSC beam 110, and is welded to the upper surface of the left and right upper flanges (111, 112) so as to project both ends. Deck 130, in particular joints (137, 139) are mounted to the protruding left and right ends.

Deck reinforcing bar 150 is preferably implemented as a round bar of the private sector than the strip-shaped deformed reinforcing bar.

Since the bottom surface of the round bar 150 is better in contact with the upper surfaces of the left and right upper flanges 111 and 112 than the bottom surface of the reinforcing bar (the adhesiveness is relatively weak due to the floating part because it is in close contact with the band portion), the welding area is wide and the weldability is improved. The bondability (sticking force) is very good.

In particular, at the end of the round bar 150, it is preferable to have a stud 151 of the 'b' shape bent downward.

The stud 151 is in a downward bent shape so as not to interfere with the mounting of the deck 130.

By the deck reinforcing bar 150, the deck 130 is only slightly higher than the upper surface of the TSC beam 110 by the diameter of the deck reinforcing bar 150, it is possible to reduce the floor height.

In addition, since the deck reinforcing bar 150 is welded and fixed on the upper surface, it is very easy to secure a construction space and can be immediately installed on the site where the TSC beam 110 is mounted on the column.

In addition, since the deck reinforcing bars 150 are connected to the discontinuous section between the TSC beam 110 and the deck 130 to form a continuous section, it provides a very strong structure to shear force.

In addition, the studs 151 bent at both ends of the deck reinforcing bar 150 are placed to prevent sliding from occurring at the joint surface with the poured concrete to form a complete composite structure.

When such a floor-saving slab TSC girder is completed, concrete 1 is poured on it to form a floor slab.

Spread a glass fiber net (2) on the poured concrete (1) and adhere with an adhesive.

It is preferable that resin (3) is apply | coated on the glass fiber net (2).

Resin (3) serves to prevent cracks and strength reinforcement of the floor of the parking lot, the tensile strength is not inferior to the concrete, the tensile strength is large, even if the age is not cracked, and excellent workability.

The silica sand 4 is sprayed on the resin 3. The silica sand 4 is for increasing the mobility in consideration of the safety of tires and pedestrians, and spraying before the resin 3 hardens is beneficial for increasing the spraying strength of the silica sand 4.

The silica sand 4 is likely to cause a trauma to the surface of the automobile tire after being gathered. In consideration of this point, the silica sand layer is coated with the protective resin (5). Protective resin (5) is to protect the silica sand layer while the color of the silica sand (4) and the resin (3) is projected over the floor layer to enhance the aesthetics of the parking lot, and is a transparent resin excellent in wear resistance.

It is preferable to form the pigment 6 further on the protective resin 5, and to improve fastness.

Second modification

FIG. 5 is a perspective view illustrating a layer height saving synthetic slab TSC girder according to a second modified example of the first preferred embodiment of the present invention. FIGS. 6A and 6B are side views illustrating the deck of FIG. 5, and FIG. Front sectional drawing which shows the state which completed construction to the TSC girder of 5, FIG. 8 is a side sectional view of FIG.

As shown in Figs. 5 to 8, the layer height-saving synthetic slab TSC girder 100A according to the second modification of the first embodiment is the composite slab TSC girder 100 according to the first modification and its structure and Although similar in function, the difference is that the composite slab TSC girder 100A uses the first deck 130A and the second deck 130A 'having different dance depths.

That is, although the first deck 130A has the same depth d as the deck 130 of the first modified example, the depth D of the second deck 130A 'is the depth d of the first deck 130A Deeper than d).

Therefore, since the girder 100A of the second modification withstands the greater bending rigidity than the girder 100 of the first modification, it is possible to construct a long span (distance between beams) so that the parking space of the underground parking lot can be increased. It can be secured.

Third modification

FIG. 9 is a perspective view illustrating a layer height saving synthetic slab TSC girder according to a third modified example of the first preferred embodiment of the present invention, FIG. 10 is a side view illustrating the deck of FIG. 9, and FIG. 11 is a TSC of FIG. 9. Front sectional drawing which shows the state which completed the construction to a girder, FIG. 12 is a side sectional view of FIG.

9 to 12, the floor-saving synthetic slab TSC girder 100B according to the third modification of the first embodiment is the composite slab TSC girder 100 and its structure according to the first modification. And similar in function, but different in that the composite slab TSC girders 100B use decks 130B with different dance widths.

That is, the deck 130B of the third modified example has the same depth of dance as the deck 130 of the first modified example, but the width t of the deck 130B is greater than the width T of the deck 130. Short (t <T).

Accordingly, since the girder 100B of the third modified example has a smaller bending rigidity than the girder 100 of the first modified example, the construction of the short span (distance between the beams and the beams) is possible, but the material cost can be reduced.

Modification 4

FIG. 13 is a perspective view illustrating a layer height saving synthetic slab TSC girder according to a fourth modified example of the first preferred embodiment of the present invention, FIG. 14 is a side view illustrating the deck of FIG. 13, and FIG. 15 is a TSC of FIG. 13. It is a sectional front view which shows the state which completed the construction to a girder, and FIG. 16 is a side sectional view of FIG.

As shown in Figs. 13 to 16, the floor-saving synthetic slab TSC girder 100C according to the fourth modification of the first embodiment is composed of the composite slab TSC girder 100 and its structure and according to the first modification. Although similar in function, the deck 130C of the synthetic slab TSC girder 100C differs from the deck 130 of the first variant.

That is, in the deck 130C of the fourth modified example, a seating portion 139 on which the reinforcing steel 160 is welded and a support portion 138 supporting the seating portion 139 are integrally formed on the bottom plate 131C. The difference is that they are bent.

Thus, as shown in Figure 13, because the reinforcing bar 160 is welded to the seating portion 139 is fixed serves to reinforce the transverse rebar.

In addition, the T-shaped seating portion 139 and the supporting support portion 138 also function as a stud.

In addition, the end portion of the reinforcing bar 160 is also welded to the upper surface of the TSC beam 110.

Therefore, since the bending rigidity of the girder 100C of the fourth modified example is greater than that of the girder 100 of the first modified example, the long span (distance between the beams and the beams) can be constructed.

Second embodiment  : Floor  Low-cost synthetic slab H-beam Girder

FIG. 17 is a perspective view illustrating a layer height saving synthetic slab H-beam girder according to a second preferred embodiment of the present invention, FIG. 18 is a side view illustrating the deck of FIG. 17, and FIG. 19 is an H-beam of FIG. 17. It is a sectional front view which shows the state which completed the construction to a girder, and FIG. 20 is a side sectional view of FIG.

17 to 20, the composite slab H-beam girder 200 according to the second embodiment is similar in structure and function to the TSC girder 100 of the first embodiment, but the TSC beam 110 The difference is that the H-beam 210 is used instead.

That is, the H-beam 210 is composed of a web 215 connecting the upper flange 211, the lower flange 213, and the upper and lower flanges 211, 213.

Deck girder 150 is welded to the upper surface of the upper flange 211.

In addition, the L-angle 220 is preferably welded to the side of the upper flange 211.

The L-angle 220 may be implemented by a finishing angle 221 for finishing the side of the left and right ends of the deck 130 and a support angle 223 supporting both the left and right ends of the deck 130.

The same effect can be realized by replacing the H-beam 210 and the L-angle 220 instead of the TSC beam 110 of the second to fourth modified examples of the first embodiment.

Third embodiment  : Floor  Low cost synthetic slab PC Girder

FIG. 21 is a perspective view illustrating a layer height-saving synthetic slab PC girder according to a third preferred embodiment of the present invention. FIG. 22 is a side view of the deck of FIG. 21, and FIG. 23 is a construction of the PC girder of FIG. 21. Front sectional drawing which shows the completed state, and FIG. 24 is a side sectional view of FIG.

21 to 24, the composite slab PC girder 300 according to the third embodiment includes the TSC girder 100 of the first embodiment or the H-beam girder 200 of the second embodiment and its structure. And the functionality is similar, except that the PC beam 310 is used instead of the TSC beam 110 or the H-beam 210.

That is, the PC beam 310 is a precast concrete beam, and the shear reinforcement 320 of the upper open band shape that is partially exposed from the upper surface is arranged.

In addition, the bottom of the shear reinforcement 320 is fixed to the bottom of the root 323, the middle of the intermediary root 325 is fixed to the middle, to increase the bending rigidity of the PC beam 310.

Deck reinforcing bar 150 is welded to the exposed upper surface 321 of the shear reinforcement (320).

Therefore, the PC beam 310 can be manufactured by installing a wide beam even in a long span building to minimize the height of the floor. In addition, compared to the reinforced concrete structure, since the formwork is not required in the bottom plate and beams, the site management and construction properties are improved, and the air shortening is possible. In addition, it overcomes the limitations that were applied only to steel pillars as in the existing steel frame slim floor method, and can form a framework by joining with pillars of various structural types such as reinforced concrete, PC, and steel frame.

The same effect can be realized by replacing the PC beam 310 instead of the TSC beam 110 of the second to fourth modified examples of the first embodiment.

Fourth embodiment  : Floor  Low cost synthetic slab RC Girder

FIG. 25 is a perspective view illustrating a floor-saving synthetic slab RC girder according to a fourth preferred embodiment of the present invention, FIG. 26 is a side view illustrating the deck of FIG. 25, and FIG. 27 illustrates a construction of the RC girder of FIG. 25. Front sectional drawing which shows the completed state, and FIG. 28 is a side sectional view of FIG.

25 to 28, the composite slab RC girder 400 according to the fourth embodiment is the TSC girder 100 of the first embodiment, the H-beam girder 200 of the second embodiment, or the third embodiment. Although the structure and function of the PC girder 300 of the embodiment is similar, the difference is that the RC beam 410 is used instead of the TSC beam 110, the H-beam 210 or the PC beam 310.

That is, the RC beam 410 is a reinforced concrete beam, the reinforcing bar is partially exposed from the upper surface of the formwork 411 to be removed later.

The reinforcing bar is fixed to the upper reinforcing strip-shaped shear reinforcing bar 412 and the lower reinforcing bar 413 and the upper reinforcing bar 415 at the bottom and the upper part of the shear reinforcing bar 412. Of course, the reinforcing bars 417 and 418 may further be fixed to the side of the shear reinforcing bar 411.

The deck reinforcing bar 150 is welded to the exposed upper surface of the shear reinforcing bar 411.

Then, when the deck 130 is mounted on the deck reinforcing bar 150, the bottom of both ends of the deck 130 is mounted on the top end of the formwork 411 is supported.

Then, the form 411 and the interior of the deck 130 is in communication with each other, it is possible to improve the fluidity when pouring concrete.

The same effect can be realized by replacing the RC beam 410 instead of the TSC beam 110 of the second to fourth modified examples of the first embodiment.

As described above, although described with reference to a preferred embodiment of the present invention, the present invention can be variously modified or modified without departing from the spirit and scope of the present invention described in the claims Those skilled in the art will appreciate.

The present invention can be applied to all composite slab girders to be mounted on the deck by welding the reinforcing bar to the beam surface other than TSC beam, H-beam, PC beam, RC beam.

1 is a perspective view showing a layer height saving synthetic slab TSC girder according to a first modification of the first preferred embodiment of the present invention.

Figure 2 is a side view of the deck of Figure 1;

3 is a front sectional view showing a state in which construction is completed in the TSC girder of FIG.

4 is a side cross-sectional view of FIG.

5 is a perspective view showing a layer height saving synthetic slab TSC girder according to a second modification of the first preferred embodiment of the present invention.

6A and 6B are side views of the deck of FIG. 5;

7 is a front sectional view showing a state in which construction is completed in the TSC girder of FIG.

8 is a side cross-sectional view of FIG.

9 is a perspective view showing a layer height saving synthetic slab TSC girder according to a third modification of the first preferred embodiment of the present invention.

10 is a side view of the deck of FIG. 9;

11 is a sectional front view showing a state in which construction is completed on the TSC girder of FIG. 9;

12 is a side cross-sectional view of FIG. 9;

Fig. 13 is a perspective view showing a layer height saving synthetic slab TSC girder according to a fourth modification of the first preferred embodiment of the present invention.

14 is a side view of the deck of FIG. 13;

15 is a front sectional view showing a state in which construction is completed on the TSC girder of FIG. 13;

16 is a side cross-sectional view of FIG.

FIG. 17 is a perspective view of a layer height saving synthetic slab H-beam girder according to a second preferred embodiment of the present invention. FIG.

18 is a side view of the deck of FIG. 17.

19 is a front sectional view showing a state in which construction is completed in the H-beam girder of FIG. 17;

20 is a side cross-sectional view of FIG. 17.

FIG. 21 is a perspective view of a layer height saving synthetic slab PC girder according to a third preferred embodiment of the present invention; FIG.

FIG. 22 is a side view of the deck of FIG. 21; FIG.

23 is a sectional front view showing a state in which construction is completed in the PC girder of FIG. 21;

24 is a side sectional view of FIG. 21;

FIG. 25 is a perspective view of a layer height saving synthetic slab RC girder in accordance with a fourth preferred embodiment of the present invention. FIG.

FIG. 26 is a side view of the deck of FIG. 25; FIG.

FIG. 27 is a front sectional view showing a state in which construction is completed on the RC girder of FIG. 25; FIG.

28 is a side sectional view of FIG. 25;

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

100,100A, 100B, 100C: Composite Slab TSC Girder

110: TSC beam 130: deck

150 deck deck reinforcement 151 stud

160: rebar 200: composite slab beam girders

210: H-beam 220: L-angle

300: composite slab PC girder 310: PC beam

400: synthetic slab RC girder 410: RC beam

Claims (3)

Beams 110, 210, 310, 410; A deck 130 disposed between the beam and the beam; It is welded to the upper surface of the beam includes a deck reinforcing bar 150 to mount the deck, The deck includes a bottom plate 131, first and second side plates 133 and 135 formed at both ends of the bottom plate, and first and second joints 137 and 139 formed at each side plate. Composed, The deck reinforcing bar is placed through the first and second joints, The first joint is bent formed on the inner side of the first side plate, the second joint is bent formed on the outer side of the second side plate laminated slab saving slab. The method of claim 1, The deck reinforcing bar is round bar, End of the deck reinforcing bar is a floor-saving composite slab girder of the letter B shape bent downward. The method of claim 2, As the TSC beam using the upper open steel sheet, The left and right upper flange, the left and right lower flange, the left and right webs connecting the left and right upper flanges and the left and right lower flanges, the left and right vertical bending pieces which are formed by bending vertically upward from the left and right lower flanges, the left and right vertical flanges are welded and fixed. High-layer composite slab girder consisting of horizontally curved left and right pieces that are horizontally bent from the bending piece.

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