CN215907146U - Side connecting structure of reinforced concrete floor and steel beam - Google Patents
Side connecting structure of reinforced concrete floor and steel beam Download PDFInfo
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- CN215907146U CN215907146U CN202122385821.XU CN202122385821U CN215907146U CN 215907146 U CN215907146 U CN 215907146U CN 202122385821 U CN202122385821 U CN 202122385821U CN 215907146 U CN215907146 U CN 215907146U
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Abstract
The utility model discloses a side connecting structure of a reinforced concrete floor slab and a steel beam, which comprises an H-shaped steel beam (1), wherein a concrete floor slab (2) is arranged outside the H-shaped steel beam (1); the H-shaped steel beam (1) comprises an upper flange (101) and a lower flange (103), a web (102) is arranged between the upper flange (101) and the lower flange (103), a group of transverse stiffening plates (104) are arranged on two sides of the web (102), and a sealing steel bar (105) is arranged between the upper flange (101) and the lower flange (103). The utility model can effectively solve the problems of overlarge deformation of the lower flange, weak axial slip resistance of the connecting joint, complex structure, difficult field installation, high manufacturing cost and the like.
Description
Technical Field
The utility model relates to the field of building floor structures, in particular to a side connecting structure of a reinforced concrete floor and a steel beam.
Background
The steel structure has wide application in the field of civil engineering. The concrete floor is used as a common steel structure building floor, and has the advantages of high comfort, good sound insulation and heat preservation effects, high bearing capacity, low manufacturing cost, mature construction method and the like. In order to fully utilize the advantages of the concrete floor and the steel structure building, the concrete floor is combined with the steel beam, the concrete floor is erected on the upper portion of the steel beam in a common way, the concrete floor is convenient to construct, however, the total thickness of the floor structure can be increased by the aid of the concrete floor, the net height of the building is further influenced, and the pipeline space of equipment is extruded or the building quality is reduced. In addition, in the traditional mode, because the steel beam is exposed below the concrete slab, the attractive appearance is influenced, and a suspended ceiling is generally required to be added, so that the manufacturing cost is increased; meanwhile, the steel beam surface except the upper surface needs to be protected from fire and corrosion, and the manufacturing cost is relatively high. In order to solve the problems, some methods for placing the floor slab on the side face of the steel beam exist in the prior art, however, the existing method for placing the floor slab on the side face mostly has one or more defects, such as a) overlarge deformation of a lower flange, b) poor integrity of a connecting joint, weak axial sliding resistance, weak connection between a plate steel bar and the steel beam, c) complex structure manufacturing method, multiple accessories, difficult field installation, d) high manufacturing cost and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a side connecting structure of a reinforced concrete floor slab and a steel beam. The utility model can effectively solve the problems of overlarge deformation of the lower flange, weak axial slip resistance of the connecting joint, complex structure, difficult field installation, high manufacturing cost and the like.
The technical scheme of the utility model is as follows: a side connecting structure of a reinforced concrete floor and a steel beam comprises an H-shaped steel beam, wherein a concrete floor is arranged outside the H-shaped steel beam; the H-shaped steel beam comprises an upper flange and a lower flange, a web plate is arranged between the upper flange and the lower flange, a group of transverse stiffening plates are arranged on two sides of the web plate, and a sealing edge steel bar is arranged between the upper flange and the lower flange.
In the side connecting structure of the reinforced concrete floor slab and the steel beam, the distance between the outer side end of the transverse stiffening plate and the outer side ends of the upper flange and the lower flange is 50-70 mm.
In the foregoing structure for connecting a reinforced concrete floor to a side surface of a steel beam, the concrete floor includes a concrete layer located outside an H-shaped steel beam, and a top-layer steel bar located above an upper flange and a bottom-layer steel bar located above a lower flange are provided in the concrete layer; the inner of bottom reinforcing bar is equipped with curved anchor structure, and curved anchor structure is located the side of web.
In the side connecting structure of the reinforced concrete floor slab and the steel beam, the distance from the top of the concrete floor slab to the top of the H-shaped steel beam is 30-50 mm.
Compared with the prior art, the utility model is composed of an H-shaped steel beam and a concrete floor slab arranged on the side surface of the H-shaped steel beam, wherein the H-shaped steel beam is composed of an upper flange, a lower flange, a web plate, a transverse stiffening plate and edge banding steel bars, and the transverse stiffening plate and the edge banding steel bars can play a role of shear keys and limit the axial dislocation of the floor slab and the steel beam; meanwhile, the transverse stiffening plate can effectively improve the out-of-plane rigidity of the lower flange of the steel beam and inhibit the out-of-plane bending deformation of the lower flange; the banding reinforcing bar is similar to the reinforcing bar of concrete beam, can produce effectual hoop restraint effect to girder steel web side concrete, and then can improve the reliability of the anchor of the vertical muscle at the bottom of the board. The utility model has simple and reasonable integral structure, can effectively transfer force between the concrete floor slab and the H-shaped steel beam, and can form a good structural system by cooperative work. According to the utility model, the stability of the steel beam flange and the web plate is improved by the method of wrapping the steel beam with concrete; by arranging the transverse stiffening plate, the problems that the lower flange is excessively deformed, the node has weak axial slip resistance and the like in the conventional method are solved; meanwhile, the steel beam does not need to be perforated, so that the problems of strength reduction, cost improvement, construction period extension and the like caused by perforation are solved; the steel beam components can be prefabricated and assembled in a factory, so that industrial production can be realized, and the production efficiency is improved; except the lower surface of the lower flange, the surfaces of all the other steel beams are placed in the cast-in-place concrete, so that the cost of corrosion prevention and fire prevention is reduced. The utility model can also greatly reduce the structure thickness, improve the clear height of the space and improve the building quality under the condition that the floor heights are the same; the steel beam top does not need to be provided with the stud, and the structural thickness is further reduced. The utility model can also build the integral effect of the bare concrete floor, can replace the slab-column structure, and in many cases, the beam-slab-column member has more advantages in size and more flexible structural form compared with the reinforced concrete thick slab structure. In conclusion, the utility model can effectively solve the problems of overlarge deformation of the lower flange, weak axial sliding resistance of the connecting joint, complex structure, difficult field installation, high manufacturing cost and the like.
Drawings
FIG. 1 is a schematic structural view of the floor slab bottom of the present invention being flush with the bottom surface of the H-beam;
FIG. 2 is a schematic structural view of the present invention when the floor slab bottom is higher than the bottom of the H-beam;
FIG. 3 is a three-dimensional structural view of an H-beam;
figure 4 is a two-dimensional structural view of an H-section steel beam.
The labels in the figures are: 1-H-shaped steel beam, 2-concrete floor slab, 101-upper flange, 102-web plate, 103-lower flange, 104-transverse stiffening plate, 105-edge sealing steel bar, 201-top steel bar, 202-bottom steel bar, 203-concrete layer and 204-bent anchor structure.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.
Examples are given. A side connecting structure of a reinforced concrete floor and a steel beam comprises an H-shaped steel beam 1 as shown in figures 1 to 4, wherein a concrete floor 2 is arranged outside the H-shaped steel beam 1; the H-shaped steel beam 1 comprises an upper flange 101 and a lower flange 103, a web plate 102 is arranged between the upper flange 101 and the lower flange 103, a group of transverse stiffening plates 104 are arranged on two sides of the web plate 102, and edge-sealing steel bars 105 located on two sides of the web plate are arranged between the upper flange 101 and the lower flange 103.
The spacing between adjacent transverse stiffener plates 104 on the same side is 500-1000 mm.
The distance between adjacent edge-sealing steel bars on the same side is 200 mm and 300 mm.
The distance between the outer ends of the transverse stiffening plates 104 and the outer ends of the upper flange 101 and the lower flange 103 is 50-70 mm.
The concrete floor 2 comprises a concrete layer 203 positioned outside the H-shaped steel beam 1, and a top layer steel bar 201 positioned above the upper flange 101 and a bottom layer steel bar 202 positioned above the lower flange 103 are arranged in the concrete layer 203; the inner end of the bottom layer of the steel bar 202 is provided with a bent anchor structure 204, and the bent anchor structure 204 is positioned on the side surface of the web plate 102.
The distance between the top of the concrete floor slab 2 and the top of the H-shaped steel beam 1 is 30-50 mm.
The cavity between the upper flange and the lower flange of the H-shaped steel is called as an armpit, and the armpit is cast by concrete and integrally cast with a floor slab.
The H-shaped steel beam is a welded H-shaped steel beam or a rolled H-shaped steel
The H-shaped steel beam is an H-shaped steel beam with equal width of flanges or an H-shaped steel beam with unequal width of flanges. When the flanges are the H-shaped steel beams with different widths, the width of the upper flange is smaller than that of the lower flange.
The upper flange 101 and the lower flange 103 are equal in width, or the width of the upper flange 101 is smaller than that of the lower flange 103.
The transverse stiffening plates 104 are connected to two sides of the web plate 102, arranged between the upper flange 101 and the lower flange 103 at equal intervals, and the outer edges of the lower flanges 103 are inwards withdrawn by about 60mm, so that concrete pouring is facilitated.
The edge banding reinforcing steel bars 105 are fixed between the upper flange 101 and the lower flange 103 and are arranged at equal intervals; and the outer skin of the edge sealing steel bar 105 is away from the outer edge of the lower flange 103 by a distance which is twice the thickness of the protective layer.
The reinforced concrete floor 2 is provided with top layer reinforcing bars 201 and bottom layer reinforcing bars 202.
Referring to fig. 1 and 2, the reinforced concrete floor 2 is cast on the side of the steel beam 1.
The plate top of the reinforced concrete floor 2 is 30-50 mm higher than the upper flange, so that the top layer steel bars 201 are arranged above the upper flange 101 in a pull-through mode.
When the bottom of the reinforced concrete floor 2 is flush with the bottom surface of the H-shaped steel beam 1 (shown in figure 1), the bottom layer steel bars 202 stick to the upper part of the lower flange 103, extend into the beam armpit bending anchors and can be welded and fixed with the steel beam lower flange 103 at intervals of 2-3 times; when the bottom of the reinforced concrete floor 2 is higher than the bottom surface of the H-shaped steel beam 1 (fig. 2), the bottom layer steel bars 202 extend into the beam axilla bending anchors and can be welded and fixed with the aligned transverse stiffening plates 104.
The space in the beam armpit is integrally poured and compacted by concrete.
Claims (4)
1. The utility model provides a side connection structure of reinforced concrete floor and girder steel which characterized in that: the concrete floor slab comprises an H-shaped steel beam (1), wherein a concrete floor slab (2) is arranged outside the H-shaped steel beam (1); the H-shaped steel beam (1) comprises an upper flange (101) and a lower flange (103), a web (102) is arranged between the upper flange (101) and the lower flange (103), a group of transverse stiffening plates (104) are arranged on two sides of the web (102), and a sealing steel bar (105) is arranged between the upper flange (101) and the lower flange (103).
2. The structure of claim 1, wherein the reinforced concrete floor slab is connected to the steel beam at a side thereof, and the structure further comprises: the distance between the outer side end of the transverse stiffening plate (104) and the outer side ends of the upper flange (101) and the lower flange (103) is 50-70 mm.
3. The structure of claim 1, wherein the reinforced concrete floor slab is connected to the steel beam at a side thereof, and the structure further comprises: the concrete floor (2) comprises a concrete layer (203) positioned outside the H-shaped steel beam (1), and a top layer steel bar (201) positioned above the upper flange (101) and a bottom layer steel bar (202) positioned above the lower flange (103) are arranged in the concrete layer (203); the inner end of the bottom layer steel bar (202) is provided with a bent anchor structure (204), and the bent anchor structure (204) is positioned on the side surface of the web plate (102).
4. The structure of claim 1, wherein the reinforced concrete floor slab is connected to the steel beam at a side thereof, and the structure further comprises: the distance between the top of the concrete floor (2) and the top of the H-shaped steel beam (1) is 30-50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122385821.XU CN215907146U (en) | 2021-09-30 | 2021-09-30 | Side connecting structure of reinforced concrete floor and steel beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122385821.XU CN215907146U (en) | 2021-09-30 | 2021-09-30 | Side connecting structure of reinforced concrete floor and steel beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215907146U true CN215907146U (en) | 2022-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122385821.XU Active CN215907146U (en) | 2021-09-30 | 2021-09-30 | Side connecting structure of reinforced concrete floor and steel beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215907146U (en) |
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2021
- 2021-09-30 CN CN202122385821.XU patent/CN215907146U/en active Active
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