CN219808239U - Rolling T-shaped steel-concrete composite beam structure - Google Patents
Rolling T-shaped steel-concrete composite beam structure Download PDFInfo
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- CN219808239U CN219808239U CN202321333481.9U CN202321333481U CN219808239U CN 219808239 U CN219808239 U CN 219808239U CN 202321333481 U CN202321333481 U CN 202321333481U CN 219808239 U CN219808239 U CN 219808239U
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- 239000004567 concrete Substances 0.000 title claims abstract description 90
- 239000002131 composite material Substances 0.000 title claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 116
- 239000010959 steel Substances 0.000 claims abstract description 116
- 239000011178 precast concrete Substances 0.000 claims description 50
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009439 industrial construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Abstract
The utility model provides a rolled T-shaped steel-concrete composite beam structure, which relates to the technical field of bridge engineering and comprises rolled T-shaped steel-concrete composite beam units, wherein the rolled T-shaped steel-concrete composite beam units are provided with a plurality of pieces, adjacent prefabricated rolled T-shaped steel-concrete composite beam units are connected through cast-in-place wet joints, and cast-in-place concrete bridge decks are arranged on the prefabricated steel-concrete composite T-beam units. The utility model creates a brand new rolled T-shaped steel-concrete composite beam structure by improving the traditional steel plate composite beam structure, adopts rolled steel, and embeds the steel skeleton into the concrete beam.
Description
Technical Field
The utility model relates to the technical field of bridge engineering, in particular to a rolled T-shaped steel-concrete composite beam structure.
Background
The steel-concrete composite beam is a novel structure developed on the basis of a steel structure and a concrete structure, and compared with the traditional reinforced concrete bridge, the steel-concrete composite beam can lighten the dead weight of an upper structure, reduce the earthquake effect and lower the manufacturing cost of a lower structure. Compared with a pure steel structure, the steel-concrete composite beam has the advantages that the steel consumption is reduced, the structural rigidity, the integrity and the stability are improved, and the fire resistance and the durability are better. In recent years, the application practice of the steel-concrete composite beam structure in China shows that the structural form has the advantages of both the steel structure and the concrete structure, is suitable for industrial construction, and is one of important development directions of small and medium-span bridges. But the connection mode between steel and concrete usually adopts shear pin connection, and the work load of welding the shear pin to the steel plate is big, usually needs on-site welding, and the quality is difficult to guarantee, influences construction period, is the main factor that restricts the industrialization construction.
Disclosure of Invention
Aiming at the problems that the welding workload of steel plates is large, the consumption of shear nails at steel-concrete connection parts is large, site welding is needed, the welding quality is difficult to guarantee and the like in the traditional steel-concrete composite beam structure, the utility model provides a rolled T-shaped steel-concrete composite beam structure.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the rolled T-shaped steel-concrete combined beam structure comprises a rolled T-shaped steel-concrete combined beam unit, wherein a plurality of rolled T-shaped steel-concrete combined beam units are arranged, adjacent prefabricated rolled T-shaped steel-concrete combined beam units are connected through cast-in-situ wet joints, and cast-in-situ concrete bridge decks are arranged on the prefabricated steel-concrete combined T-beam units;
the rolling T-shaped steel-concrete combined beam unit consists of a steel structure part and a concrete part.
The steel structure part is T-shaped steel with steel teeth, the T-shaped steel is welded according to design linearity to form a steel skeleton, the steel skeleton is H1 in mid-span height, and the fulcrum height is H2, wherein H1 is more than H2;
the concrete part is in an arch structure at the middle bottom of the span, a T-shaped structure consisting of a precast concrete top plate and a precast concrete bearing is arranged from top to bottom, and a fulcrum of the concrete part is a T-shaped structure consisting of a precast concrete top plate, a precast concrete bearing and a precast concrete web from top to bottom;
the section steel skeleton midspan part stretches into the precast concrete roof, and the fulcrum part stretches into the precast concrete web, the section steel skeleton constitutes the joint tenon with the inside reinforcing bar of concrete part.
The utility model further discloses the following technology:
preferably, wet joint connection steel bars are arranged in the precast concrete top plates, extend out of beam ends of the precast concrete top plates, are bound between adjacent precast concrete top plates, and are wrapped and bound.
Preferably, a first transverse shear steel bar is arranged in the precast concrete top plate in the middle of the concrete bridge deck and the concrete part, a steel bar net consisting of a first beam bottom longitudinal steel bar and a first constraint steel bar is arranged in the precast concrete bearing, the end part of the first constraint steel bar extends into the concrete bridge deck, and the section steel framework extends into the precast concrete top plate and is welded with the first transverse shear steel bar and the first constraint steel bar to form a middle part connecting tenon.
Preferably, the second transverse shear steel bars are arranged in the concrete bridge deck, the second transverse shear steel bars extend downwards into the precast concrete web, the reinforcing steel bar net composed of the second beam bottom longitudinal steel bars and the second constraint steel bars is arranged in the precast concrete web, the end parts of the second constraint steel bars extend into the concrete bridge deck, and the profile steel skeleton extends into the precast concrete web to form the pivot part connecting tenons with the second transverse shear steel bars.
The beneficial technical effects of the utility model are as follows:
the utility model creates a brand new rolled T-shaped steel-concrete composite beam structure by improving the traditional steel plate composite beam structure, adopts rolled steel, and embeds the steel skeleton into the concrete beam.
In order to better adapt to the internal force distribution in the bridge, the heights of the T-shaped steel and the concrete web plate change along with the change of the length of the main girder. For the continuous structure, the lower part of the section of the hogging moment area is pressed, the concrete web plate downwards extends to the lower flange, the T-shaped steel serves as an external reinforcing steel bar, the height of the concrete web plate is reduced, the height of the T-shaped steel is increased to the inside of the concrete top plate, and the T-shaped steel web plate is in a tension state, so that the concrete has no tensile stress and no crack, the advantages of the two materials are fully exerted, and meanwhile, the self weight of the beam body is lightened, so that the beam body has good economical efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic view of a rolled T-section steel-concrete composite beam unit according to the present utility model;
FIG. 3 is a schematic view of a section steel skeleton of the present utility model;
FIG. 4 is a schematic illustration of a mid-span cross-sectional configuration of the present utility model;
FIG. 5 is a schematic view of a fulcrum cross-sectional configuration of the present utility model;
FIG. 6 is a schematic view of the configuration of the connecting tenon and the middle section steel bar of the utility model;
FIG. 7 is a schematic view of a cross-sectional bar configuration of a connecting tenon and a fulcrum according to the present utility model;
FIG. 8 is a schematic view of a longitudinal reinforcement of the connecting tenon of the present utility model;
the numbers in the figures are: the concrete beam comprises a 1-rolled T-shaped steel-concrete combined beam unit, a 2-wet joint, a 3-concrete bridge deck, 4-T-shaped steel, a 5-shaped steel framework, 7-steel teeth, 8-first constraint steel bars, 9-first transverse shear steel bars, 10-first beam bottom longitudinal steel bars, 11-wet joint connecting steel bars, 12-precast concrete webs, 13-precast concrete supports, 14-second constraint steel bars, 15-second transverse shear steel bars and 16-second beam bottom longitudinal steel bars.
The specific embodiment is as follows:
the present utility model will be described in further detail with reference to the following examples, so that the technical means, the creation characteristics, the achievement of the purpose and the effect achieved by the present utility model can be easily understood. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1-8, a rolled T-shaped steel-concrete composite beam structure comprises a rolled T-shaped steel-concrete composite beam unit 1, wherein a plurality of rolled T-shaped steel-concrete composite beam units 1 are arranged, adjacent prefabricated rolled T-shaped steel-concrete composite beam units 1 are connected through cast-in-place wet joints 2, and cast-in-place concrete bridge decks 3 are arranged on the prefabricated steel-concrete composite T-beam units;
the rolled T-shaped steel-concrete combined beam unit 1 consists of a steel structure part and a concrete part.
The steel structure part is T-shaped steel with steel teeth 7, the T-shaped steel is welded according to design linearity to form a steel skeleton 5, the steel skeleton 5 is H1 in mid-span height, the fulcrum height is H2, and H1 is more than H2;
the concrete part is of an arch structure at the middle bottom of the span, a T-shaped structure consisting of a precast concrete top plate and a precast concrete bearing 13 is arranged from top to bottom, and a fulcrum of the concrete part is of a T-shaped structure consisting of the precast concrete top plate, the precast concrete bearing 13 and a precast concrete web 12 from top to bottom;
the midspan part of the profile steel framework 5 stretches into the precast concrete top plate, the fulcrum part stretches into the precast concrete web 12, and the profile steel framework 5 and the internal steel bars of the concrete part form a connecting tenon.
Be equipped with wet seam connecting bar 11 in the precast concrete roof, and wet seam connecting bar 11 stretches out precast concrete roof beam end, wet seam connecting bar 11 ligature between the adjacent precast concrete roof, wet seam 2 parcel ligature wet seam connecting bar 11.
The concrete bridge deck 3 and the precast concrete roof board in the middle of the concrete part are internally provided with first transverse shear steel bars 9, the precast concrete bearing 13 is internally provided with a steel reinforcement net consisting of first beam bottom longitudinal steel bars 10 and first constraint steel bars 8, the end parts of the first constraint steel bars 8 extend into the concrete bridge deck 3, and the profile steel framework 5 extends into the precast concrete roof board and is welded with the first transverse shear steel bars 9 and the first constraint steel bars 8 to form a connecting tenon in the middle of the middle.
The concrete bridge deck 3 is internally provided with a second transverse shear steel bar 15, the second transverse shear steel bar 15 downwards extends into the precast concrete web 12, the precast concrete web 12 is internally provided with a steel reinforcement net consisting of a second beam bottom longitudinal steel bar 16 and a second constraint steel bar 14, the end part of the second constraint steel bar 14 extends into the concrete bridge deck 3, and the profile steel framework 5 extends into the precast concrete web 12 and forms a fulcrum part connecting tenon with the second transverse shear steel bar 15.
The rolled H-shaped steel is cut into two T-shaped steel, the T-shaped steel is embedded into the concrete beam, and a composite connecting tenon is formed by cutting the saw tooth shape of the section and the steel bars in the concrete beam.
In order to better adapt to the internal force distribution in the bridge, the heights of the T-shaped steel and the concrete web plate change along with the change of the length of the main girder. For the continuous structure, the lower part of the section of the hogging moment area is pressed, the concrete web plate downwards extends to the lower flange, the T-shaped steel serves as an external reinforcing steel bar, the height of the concrete web plate is reduced, the height of the T-shaped steel is increased to the inside of the concrete top plate, and the T-shaped steel web plate is in a tension state, so that the concrete has no tensile stress and no crack, the advantages of the two materials are fully exerted, and meanwhile, the self weight of the beam body is lightened, so that the beam body has good economical efficiency.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, and that the foregoing utility model and description are merely illustrative of the principles of this utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (4)
1. The rolled T-shaped steel-concrete composite beam structure is characterized by comprising rolled T-shaped steel-concrete composite beam units, wherein a plurality of rolled T-shaped steel-concrete composite beam units are arranged, adjacent prefabricated rolled T-shaped steel-concrete composite beam units are connected through cast-in-place wet joints, and cast-in-place concrete bridge decks are arranged on the prefabricated steel-concrete composite T-beam units;
the rolled T-shaped steel-concrete combined beam unit consists of a steel structure part and a concrete part;
the steel structure part is T-shaped steel with steel teeth, the T-shaped steel is welded according to design linearity to form a steel skeleton, the steel skeleton is H1 in mid-span height, and the fulcrum height is H2, wherein H1 is more than H2;
the concrete part is in an arch structure at the middle bottom of the span, a T-shaped structure consisting of a precast concrete top plate and a precast concrete bearing is arranged from top to bottom, and a fulcrum of the concrete part is a T-shaped structure consisting of a precast concrete top plate, a precast concrete bearing and a precast concrete web from top to bottom;
the section steel skeleton midspan part stretches into the precast concrete roof, and the fulcrum part stretches into the precast concrete web, the section steel skeleton constitutes the joint tenon with the inside reinforcing bar of concrete part.
2. A rolled T-section steel-concrete composite beam structure according to claim 1, wherein: wet joint connecting steel bars are arranged in the precast concrete top plates and extend out of beam ends of the precast concrete top plates, the wet joint connecting steel bars between adjacent precast concrete top plates are bound, and the wet joint connecting steel bars are bound by wrapping the wet joint.
3. The rolled T-shaped steel-concrete composite beam structure according to claim 1, wherein a first transverse shear steel bar is arranged in a precast concrete top plate in the middle of the concrete bridge deck and the concrete part, a steel bar net consisting of a first beam bottom longitudinal steel bar and a first constraint steel bar is arranged in a precast concrete bearing, the end part of the first constraint steel bar extends into the concrete bridge deck, and the steel bar framework extends into the precast concrete top plate and is welded with the first transverse shear steel bar and the first constraint steel bar to form a middle connecting tenon.
4. The rolled T-section steel-concrete composite beam structure according to claim 1, wherein a second transverse shear steel bar is arranged in the concrete bridge deck, the second transverse shear steel bar extends downwards into the precast concrete web, a steel reinforcement net consisting of a second beam bottom longitudinal steel bar and a second constraint steel bar is arranged in the precast concrete web, the end part of the second constraint steel bar extends into the concrete bridge deck, and the section steel skeleton extends into the precast concrete web to form a pivot part connecting tenon with the second transverse shear steel bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321333481.9U CN219808239U (en) | 2023-05-30 | 2023-05-30 | Rolling T-shaped steel-concrete composite beam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321333481.9U CN219808239U (en) | 2023-05-30 | 2023-05-30 | Rolling T-shaped steel-concrete composite beam structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219808239U true CN219808239U (en) | 2023-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321333481.9U Active CN219808239U (en) | 2023-05-30 | 2023-05-30 | Rolling T-shaped steel-concrete composite beam structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219808239U (en) |
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2023
- 2023-05-30 CN CN202321333481.9U patent/CN219808239U/en active Active
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