CN216999258U - Double-rib plate type steel-concrete composite beam for railway - Google Patents
Double-rib plate type steel-concrete composite beam for railway Download PDFInfo
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- CN216999258U CN216999258U CN202220460103.6U CN202220460103U CN216999258U CN 216999258 U CN216999258 U CN 216999258U CN 202220460103 U CN202220460103 U CN 202220460103U CN 216999258 U CN216999258 U CN 216999258U
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Abstract
The utility model relates to a double-rib plate type steel-concrete composite beam for railways, which belongs to the technical field of bridge engineering construction, and comprises a bridge deck plate (1), a web plate (4), an upper flange plate (2), a lower flange plate (3) and a U-shaped diaphragm plate (8); the web plates (4) are longitudinally parallel to the bridge deck slab and symmetrically arranged between the upper flange plate (2) and the lower flange plate (3); the U-shaped diaphragm plate (8) is vertical to the two webs (4) and is arranged between the two webs (4); the upper flange plate (2) is a steel plate and is arranged between the web plate (4) and the bridge deck plate (1), and a shear nail (7) is arranged on the connecting surface of the upper flange plate and the bridge deck plate (1). The utility model has the structural advantages of the concrete box girder and the steel box girder, and can give full play to the material properties of concrete and steel: compared with a concrete box girder, the self weight of the structure can be effectively reduced; compared with a steel box girder, the steel quantity for the structure can be reduced, and the steel box girder can be suitable for bridges with various span forms.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering construction, and particularly relates to a double-rib plate type steel-concrete composite beam for railways.
Background
In recent years, with the rapid development of railway transportation industry in China, prestressed reinforced concrete composite beam bridges are more and more widely applied in railway bridge construction, and the structural systems and the forms of the prestressed reinforced concrete composite beam bridges are more and more novel and more complex.
The steel-concrete composite beam bridge has reasonable stress, large spanning capability and good bridge deck pavement performance. In the combined beam structure, the concrete slab works together with the steel beam as a steel beam wing plate, has the advantages of a steel structure and a concrete structure, has the characteristics of small self weight, high bearing capacity, high rigidity, material saving, convenient and quick construction and the like, has obvious economic and social benefits, is suitable for the national conditions of basic construction in China, and becomes one of important development directions of a structure system.
Compared with a highway bridge, the railway bridge has relatively few applications on the steel-concrete composite beam, and the development of more forms of steel-concrete composite structure bridges is a necessary stage of railway construction by combining the structural characteristics and the in-hand characteristics of railways.
Disclosure of Invention
In order to overcome the problems in the background art, the utility model provides a double-rib plate type steel-concrete combined beam for a railway, which has the structural advantages of a concrete box beam and a steel box beam and can fully exert the material properties of concrete and steel: compared with a concrete box girder, the self weight of the structure can be effectively reduced; compared with a steel box girder, the steel quantity of the structure can be reduced, and the steel box girder can be suitable for bridges with various span forms.
In order to realize the purpose, the utility model is realized by the following technical scheme:
the double-rib plate type steel-concrete combined beam for the railway comprises a bridge deck, a web plate, an upper flange plate, a lower flange plate and a U-shaped diaphragm plate; the web plate and the bridge deck plate are longitudinally parallel and symmetrically arranged between the upper flange plate and the lower flange plate; the U-shaped diaphragm plate is perpendicular to the two webs and is arranged between the two webs; the upper flange plate is a steel plate and is arranged between the web plate and the bridge deck plate, and shear nails are arranged on the connection surface of the upper flange plate and the bridge deck plate.
Preferably, the inner side of the web plate is provided with a longitudinal stiffening rib which penetrates through the web plate in the longitudinal direction.
Preferably, the inner side of the web plate is provided with an inner vertical stiffening rib, the bottom of the inner vertical stiffening rib is provided with a transverse connecting plate, and the transverse connecting plate is provided with a transverse connecting stiffening plate; the inner vertical stiffening ribs and the U-shaped transverse clapboards are alternately arranged.
Preferably, the outer side of the joint of the web plate and the lower flange plate, which is opposite to the U-shaped diaphragm plate or the inner vertical stiffening rib, is provided with an outer vertical stiffening rib.
Preferably, the lower flange plate is of a one-piece steel plate structure, and the middle of the lower flange plate is disconnected between the two webs and at the position without the U-shaped diaphragm plate.
Preferably, the bridge deck is of a cast-in-place reinforced concrete structure.
Preferably, a transverse clapboard stiffening plate is arranged at the bottom in the U shape of the U-shaped transverse clapboard.
Preferably, the beam bodies of the double-rib plate type steel-concrete composite beam for the railway are connected in sections, and two ends of each two adjacent sections of composite beams are respectively provided with an inner vertical stiffening rib, a transverse connecting plate and a transverse connecting stiffening plate; and connecting plates are arranged between the inner vertical stiffening ribs and the transverse connecting plates, and the vertical stiffening ribs and the transverse connecting plates in two adjacent blocks are connected through connecting plate bolts.
The utility model has the beneficial effects that:
the utility model has the structural advantages of the concrete box girder and the steel box girder, and can give full play to the material properties of concrete and steel: compared with a concrete box girder, the self weight of the structure can be effectively reduced; compared with a steel box girder, the steel quantity of the structure can be reduced.
The structure of the utility model can adopt a factory-prefabricated field assembly form, fewer supporting molds are used, and the field workload is reduced.
The web plate of the utility model is convenient for welding a bracket or a bracket for laying pipelines, and no embedded part is required to be specially arranged.
Drawings
FIG. 1 is a schematic cross-sectional view of the U-shaped diaphragm of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention at the internal vertical stiffeners;
FIG. 3 is a schematic longitudinal elevational structure of the present invention;
FIG. 4 is a schematic plan view of an upper flange plate of the present invention;
FIG. 5 is a schematic representation of the 1/2 lower flange plate plan structure of the present invention;
in the figure, 1-bridge deck, 2-upper flange plate, 3-lower flange plate, 4-web plate, 5-longitudinal stiffening rib, 6-outer vertical stiffening rib, 7-shear nail, 8-U-shaped transverse clapboard, 9-transverse clapboard stiffening plate, 10-transverse connecting plate, 11-inner vertical stiffening rib, 12-transverse connecting stiffening plate and 13-connecting plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate understanding of the skilled person.
As shown in fig. 1 to 5, the double-ribbed plate type steel-concrete composite beam for railways comprises a bridge deck plate 1, a web plate 4, an upper flange plate 2, a lower flange plate 3, a U-shaped diaphragm plate 8 and an inner vertical stiffening rib 11.
The web 4 is longitudinally parallel to the bridge deck and symmetrically arranged between the upper flange plate 2 and the lower flange plate 3. Web 4, upper flange plate 2 and lower flange plate 3: the single side forms an I-shaped structure, and the two sides form a double rib plate together to stably support the bridge deck 1. U type cross slab 8 is perpendicular, sets up between two webs 4 with two webs 4, supports two webs 4, is equipped with vertical stiffening rib 6 in the outside of web 4 relative with U type cross slab 8, strengthens the stability of 4 structures of web, prevents that web 4 from warping. The U-shaped inner bottom of the U-shaped transverse clapboard 8 is provided with a transverse clapboard stiffening plate 9.
The upper flange plate 2 is a steel plate and is supported between the web plate 4 and the bridge deck plate 1, a shear nail 7 is arranged on the connecting surface of the upper flange plate and the bridge deck plate 1, the bridge deck plate 1 is of a cast-in-place reinforced concrete structure, and the shear nail 7 can enhance the stability of the connection of the bridge deck plate 1 and the upper flange plate 2.
An inner vertical stiffening rib 11 is further arranged between the two webs 4, a transverse connecting plate 10 is arranged at the bottom of the inner vertical stiffening rib 11, a transverse connecting stiffening plate 12 is arranged on the transverse connecting plate 10, and the inner vertical stiffening rib 11 and the U-shaped transverse partition plate 8 are alternately arranged between the webs 4, so that the stability of the whole supporting structure is improved. The inner side of the web plate 4 is provided with a longitudinal stiffening rib 5 which is longitudinally penetrated, and the longitudinal stiffening rib 5 plays a role in stabilizing the connecting structure of the web plate 4, the inner vertical stiffening rib 11 and the U-shaped diaphragm plate 8. The outer side of the web 4 opposite the inner vertical stiffener 11 is also provided with vertical stiffeners 6. The outer vertical stiffening ribs 6 are arranged at intervals of 2.5-4 m.
The lower flange plate 3 is of a whole steel plate structure, and the middle part of the lower flange plate is disconnected between the two web plates 4 at the position without the U-shaped diaphragm plate 8 (as shown in the attached figure 2); the left side and the right side of the steel plate are communicated with the U-shaped diaphragm plate 8 (as shown in figure 1). The structure can ensure the stability of the whole structure and reduce the using amount of the steel plate.
The beam bodies of the double-ribbed plate type steel-concrete composite beam for the railway are connected in sections, two ends of each two adjacent sections of composite beams are respectively provided with an inner vertical stiffening rib 11, a transverse connecting plate 10 and a transverse connecting stiffening plate 12, a connecting plate 13 is arranged between the inner vertical stiffening rib 11 and the transverse connecting plate 10, and the two adjacent inner vertical stiffening ribs 11 and the transverse connecting plate 10 are connected through the connecting plate 13 by bolts. The utility model can adopt a section assembling form and is suitable for bridges with various span forms; and the structural steel beam is assembled in a factory prefabrication field mode, so that fewer supporting molds are used, and the field workload is reduced.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the utility model, and that, while the utility model has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the utility model as defined by the appended claims.
Claims (8)
1. The utility model provides a two rib plate-type steel-concrete combination roof beam for railway which characterized in that: comprises a bridge deck (1), a web (4), an upper flange plate (2), a lower flange plate (3) and a U-shaped diaphragm plate (8); the web plate (4) and the bridge deck plate are longitudinally parallel and symmetrically arranged between the upper flange plate (2) and the lower flange plate (3); the U-shaped diaphragm plate (8) is vertical to the two webs (4) and is arranged between the two webs (4); the upper flange plate (2) is a steel plate and is arranged between the web plate (4) and the bridge deck plate (1), and a shear nail (7) is arranged on the connecting surface of the upper flange plate and the bridge deck plate (1).
2. The double-ribbed plate type steel-concrete composite beam for railways according to claim 1, wherein: the inner side of the web plate (4) is provided with a longitudinal stiffening rib (5) which is longitudinally penetrated.
3. The double-ribbed plate type steel-concrete composite beam for railways according to claim 1 or 2, wherein: an inner vertical stiffening rib (11) is arranged on the inner side of the web plate (4), a transverse connecting plate (10) is arranged at the bottom of the inner vertical stiffening rib (11), and a transverse connecting stiffening plate (12) is arranged on the transverse connecting plate (10); the inner vertical stiffening ribs (11) and the U-shaped diaphragm plates (8) are alternately arranged.
4. The double-ribbed plate type steel-concrete composite beam for railways according to claim 3, wherein: and the outer side of the position opposite to the U-shaped diaphragm plate (8) or the inner vertical stiffening rib (11) is provided with an outer vertical stiffening rib (6) at the joint of the web plate (4) and the lower flange plate (3).
5. The double-ribbed plate type steel-concrete composite beam for railways according to claim 1, wherein: the lower flange plate (3) is of a whole steel plate structure, and a U-shaped diaphragm plate (8) is arranged between the two webs (4) and is disconnected in the middle.
6. The double-ribbed plate type steel-concrete composite beam for railways according to claim 1, wherein: the bridge deck (1) is of a cast-in-place reinforced concrete structure.
7. The double-ribbed plate type steel-concrete composite beam for railways according to claim 1, wherein: and a transverse clapboard stiffening plate (9) is arranged at the bottom in the U shape of the U-shaped transverse clapboard (8).
8. A double-ribbed plate type steel-concrete composite girder for railway according to any one of claims 4 to 7, wherein: the beam bodies of the double-rib plate type steel-concrete composite beam for the railway are connected in sections, and two ends of each two adjacent sections of composite beams are respectively provided with an inner vertical stiffening rib (11), a transverse connecting plate (10) and a transverse connecting stiffening plate (12); a connecting plate (13) is arranged between the inner vertical stiffening rib (11) and the transverse connecting plate (10), and the vertical stiffening ribs (11) and the transverse connecting plate (10) in two adjacent blocks are connected through the connecting plate (13) by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220460103.6U CN216999258U (en) | 2022-03-04 | 2022-03-04 | Double-rib plate type steel-concrete composite beam for railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220460103.6U CN216999258U (en) | 2022-03-04 | 2022-03-04 | Double-rib plate type steel-concrete composite beam for railway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216999258U true CN216999258U (en) | 2022-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220460103.6U Active CN216999258U (en) | 2022-03-04 | 2022-03-04 | Double-rib plate type steel-concrete composite beam for railway |
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| CN (1) | CN216999258U (en) |
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