CN215164563U - Connecting structure of steel box girder and concrete box girder in beam bridge with steel-concrete composite structure - Google Patents
Connecting structure of steel box girder and concrete box girder in beam bridge with steel-concrete composite structure Download PDFInfo
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- CN215164563U CN215164563U CN202120799971.2U CN202120799971U CN215164563U CN 215164563 U CN215164563 U CN 215164563U CN 202120799971 U CN202120799971 U CN 202120799971U CN 215164563 U CN215164563 U CN 215164563U
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Abstract
The utility model is suitable for the bridge construction field, provides a connecting structure of a steel box girder and a concrete box girder in a steel-concrete composite structure girder bridge, wherein a pre-embedded part is pre-embedded on the bottom surface inside the concrete box girder, one end of the steel box girder is fixedly connected with a connecting profile steel, one end of the connecting profile steel is welded with the pre-embedded part, a plurality of hard pipelines are pre-embedded on the top plate of the concrete box girder, an outrigger is arranged at the top part of the concrete box girder, a connecting bolt is arranged in the hard pipeline in a penetrating way, after the connecting bolt passes through the outrigger, both ends of the connecting bolt are locked by a connecting nut, a landing leg is fixedly connected at one end of the outrigger, the bottom part of the landing leg is fixedly connected on the upper surface of the steel box girder by the bolt, the steel box girder is accurately adjusted after being lifted to a design position, the locking of the top plate and the elevation of the steel box girder can be ensured, the temporary locking structure is simple in construction, high in rigidity and strong stability, the asynchronous displacement change of the beam surface caused by the temperature and the temporary load change of the bridge deck can be reduced, and the construction safety quality of the joint section is ensured.
Description
Technical Field
The utility model belongs to bridge construction field especially relates to a connection structure of steel case roof beam and concrete box roof beam in steel-concrete composite structure beam bridge.
Background
Along with the progress of science and technology, more and more bridges spanning rivers, lakes and seas are built, and when the surrounding environment is limited and a continuous rigid frame bridge is required to be adopted, the dead weight of a beam body can be reduced by arranging a steel box beam in a midspan mode, so that the driving requirements are met. The steel box girder is higher than the concrete beam because of its cost and need restrict to set up length, and steel box girder and concrete connection combination position are usually connected the full-bridge construction and are become defeated, receive beam surface construction load, wind pressure and sunshine, temperature influence, and coupling mechanism between current steel box girder and the concrete box girder is fairly simple for be connected unstably between steel box girder and the concrete box girder.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, an object of the utility model is to provide a connection structure of steel case roof beam and concrete case roof beam in steel-concrete composite structure girder bridge aims at solving the unstable technical problem of being connected of current concrete case roof beam and steel case roof beam.
The utility model adopts the following technical scheme:
the utility model provides a connection structure of steel case roof beam and concrete box roof beam in steel-concrete integrated configuration beam bridge, includes that the pre-buried has on the inside bottom surface of concrete box roof beam one end fixedly connected with connection shaped steel, welding between connection shaped steel one end and the pre-buried has a plurality of stereoplasm pipeline in the pre-buried at concrete box roof beam top is equipped with the outrigger, wears to be equipped with connecting bolt in the stereoplasm pipeline, and after connecting bolt passed the outrigger, connecting bolt's both ends passed through coupling nut and locked, served fixedly connected with landing leg at the outrigger, the bottom of landing leg is passed through bolt fixed connection on the steel case roof beam upper surface.
Furthermore, a plurality of buttresses are arranged between the concrete box girder and the cantilever beam, and each connecting bolt penetrates through the corresponding buttress.
Furthermore, a pad beam is fixedly connected to the upper surface of one end, close to the steel box beam, of the concrete box beam through a bolt, and the cantilever beam is tightly abutted to the upper surface of the pad beam.
Furthermore, a connecting plate is fixedly connected to the bottom of each supporting leg, each supporting leg is connected with the upper surface of the steel box girder through the connecting plate, and a plurality of reinforcing ribs are fixedly connected between the outer wall of each supporting leg and the upper surface of the connecting plate.
Furthermore, the embedded part comprises a bottom plate and anchor bars, and the bottom plate and the anchor bars are embedded in the bottom surface of the inner wall of the concrete box girder.
Furthermore, for the connecting bolt which is positioned at the inclined plane position of the bottom surface of the top plate of the concrete box girder, a wedge-shaped block is arranged between the nut at the bottom of the connecting bolt and the bottom surface of the top plate of the concrete box girder.
The utility model has the advantages that: in the bridge construction, the one end of connecting shaped steel and the built-in fitting welding of pre-buried on concrete box girder inner wall lower surface, install the buttress at concrete box girder roof plate top surface, the outrigger sets up on the buttress upper surface, wear to establish at the stereoplasm pipeline with connecting bolt, buttress and outrigger, screw up coupling nut, coupling nut supports tightly on the outrigger upper surface, the outrigger lower surface supports tightly at the pad roof beam, the buttress upper surface, the connecting plate passes through bolted connection on steel box girder upper surface, the landing leg passes through the connecting plate to be connected on steel box girder upper surface, through such setting, the stability of being connected between concrete box girder and the steel box girder has been improved.
Drawings
Fig. 1 is a structural diagram provided in an embodiment of the present invention.
Reference numerals: 1. embedding parts; 2. connecting profile steel; 3. a rigid pipe; 4. a cantilever beam; 5. a connecting bolt; 6. a connecting nut; 7. a support leg; 8. buttress; 9. a bolster; 10. a connecting plate; 11. reinforcing ribs; 12. a wedge block; 13. a base plate; 14. an anchor rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical solution of the present invention, the following description is made by using specific examples.
As shown in fig. 1, the connection structure of a steel box girder and a concrete box girder in a steel-concrete composite structure beam bridge provided by this embodiment, a plurality of embedded parts 1 are embedded on the top surface of a bottom plate of the concrete box girder, the embedded parts 1 are uniformly arranged along the width direction of the concrete box girder at intervals, each embedded part 1 includes a bottom plate 13 and an anchor rod 14, the bottom plate 13 and the anchor rod 14 are manufactured into a whole by a piercing plug welding process and fixed with a steel bar of the concrete box girder, a plurality of connection section steels 2 are fixedly connected to one end of the steel box girder, the connection section steels 2 are uniformly arranged along the width direction of the steel box girder at intervals, and one ends of the connection section steels 2 are fixed with the corresponding embedded parts 1 by welding.
As shown in fig. 1, a plurality of hard pipelines 3 are embedded in a top plate of the concrete box girder in a penetrating manner, a plurality of reserved hard pipelines are vertically arranged, and the reserved hard pipelines are arranged at equal intervals according to the positions of cantilever beams. Be equipped with a connecting bolt 5 in stereoplasm pipeline 3, be equipped with buttress 8 at concrete box girder top, connecting bolt 5 passes buttress 8, connecting bolt 5's both ends are passed through coupling nut 6 and are locked, be equipped with outrigger 4 at concrete box girder top surface, the lower surface of outrigger 4 supports tightly on buttress 8 upper surface, pass outrigger 4 at connecting bolt 5, coupling nut 6 supports tightly on outrigger 4 upper surface, the one end of outrigger 4 surpasss the one end of concrete box girder, at outrigger 4 one end bottom surface fixedly connected with landing leg 7, the bottom of landing leg 7 is passed through bolt fixed connection on steel box girder upper surface.
As shown in fig. 1, in order to improve the strength of the cantilever beam 4, a pad beam 9 is fixedly connected to the upper surface of one end of the concrete box girder close to the steel box girder through a bolt, the cantilever beam 4 abuts against the upper surface of the pad beam 9, and the length of the force arm of the steel box girder on the cantilever beam 4 is reduced by arranging the pad beam 9.
As shown in fig. 1, in order to improve the connection strength between the supporting leg 7 and the upper surface of the steel box girder, a connecting plate 10 is fixedly connected to the bottom of the supporting leg 7, the supporting leg 7 and the steel box girder are connected by the connecting plate 10 through bolts, and a plurality of reinforcing ribs 11 are fixedly connected between the upper surface of the connecting plate 10 and the outer wall of the supporting leg 7.
As shown in fig. 1, in order to adapt to the flatness of the inner wall of the concrete box girder, for the connecting bolt 5 which is located at the inclined position of the bottom surface of the top plate of the concrete box girder, a wedge block 12 is arranged between the connecting nut 6 at the bottom of the connecting bolt and the bottom surface of the top plate of the concrete box girder, and the contact area between the connecting nut 6 and the bottom surface of the top plate of the concrete box girder is increased by the wedge block 12.
Before the temporary locking structure is constructed, a 1:1 slope-imitating wedge-shaped block is linearly arranged at the inclined part of the bottom of a top plate of the concrete box girder, profile steel is adopted at the top of the wedge-shaped block to serve as a cantilever beam buttress, the wedge-shaped block and the cantilever beam are fixed through a high-strength connecting bolt and a matched connecting nut, and the high-strength connecting bolt is pre-tensioned according to a design tension value. And the top of the steel box girder is welded and fixed with the cantilever beam by utilizing the profile steel supporting legs, so that the plane position of the steel box girder is locked. And the bottom plate is fixed by profile steel, the embedded steel plate and the anchor rod, and the elevation position of the steel box girder is locked. The anchoring fixing point ratio of the steel box girder section and the concrete girder section of the top plate plane locking structure is 1:1 and 1:2, and the fixing ratio of the steel box girder section and the concrete girder section of the elevation locking structure at the bottom plate is 1: 1.
When the construction is finished and the temporary locking and unlocking work is required: firstly, the connecting nuts 6 on the two ends of the connecting bolt 5 are removed by using a spanner, then the bolt between the connecting plate 10 and the steel box girder is unscrewed, and the longitudinal temporary locking structure dismantling work can be completed, so that the construction is simple and the operability is strong.
In conclusion, in the concrete beam construction process, a hard pipeline is pre-embedded in a top plate in advance, a steel plate and an anchor rod are pre-embedded in a bottom plate in advance, after a steel box beam is lifted to be in place and adjusted to meet requirements, a high-strength connecting bolt is pre-tensioned on a cantilever beam of the top plate, the locking of the plane position of the top plate is firstly completed, then the locking of the elevation of the bottom plate is completed, and finally the steel box beam and the concrete box beam are fixed.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The connecting structure of the steel box girder and the concrete box girder in the steel-concrete composite structure girder bridge is characterized by comprising an embedded part (1) embedded in the bottom surface of the interior of the concrete box girder, wherein one end of the steel box girder is fixedly connected with a connecting section steel (2), one end of the connecting section steel (2) is welded with the embedded part (1), a plurality of hard pipelines (3) are embedded in the top plate of the concrete box girder, a cantilever beam (4) is arranged at the top of the concrete box girder, a connecting bolt (5) is arranged in each hard pipeline (3) in a penetrating mode, after the connecting bolt (5) penetrates through the cantilever beam (4), the two ends of the connecting bolt (5) are locked through a connecting nut (6), one end of the cantilever beam (4) is fixedly connected with a supporting leg (7), and the bottom of the supporting leg (7) is fixedly connected to the upper surface of the steel box girder through a bolt.
2. The connecting structure of the steel box girder and the concrete box girder in the steel-concrete composite structure beam bridge according to claim 1, wherein a plurality of buttresses (8) are arranged between the concrete box girder and the outriggers (4), and each connecting bolt (5) passes through the corresponding buttress (6).
3. The connecting structure of the steel box girder and the concrete box girder in the steel-concrete composite structure beam bridge according to claim 1, wherein a pad girder (9) is fixedly connected to the upper surface of one end of the concrete box girder close to the steel box girder through a bolt, and the cantilever beam (4) abuts against the upper surface of the pad girder (9).
4. The connecting structure of the steel box girder and the concrete box girder in the steel-concrete composite structure beam bridge according to claim 1, wherein a connecting plate (10) is fixedly connected to the bottom of the leg (7), the leg (7) is connected to the upper surface of the steel box girder through the connecting plate (10), and a plurality of reinforcing ribs (11) are fixedly connected between the outer wall of the leg (7) and the upper surface of the connecting plate (10).
5. The connecting structure of the steel box girder and the concrete box girder in the steel-concrete composite structure beam bridge according to claim 1, wherein the embedded part (1) comprises a bottom plate (13) and an anchor bar (14), and the bottom plate (13) and the anchor bar (14) are embedded on the bottom surface of the inner wall of the concrete box girder.
6. The connecting structure of the steel box girder and the concrete box girder in the steel-concrete composite structure beam bridge according to claim 1, wherein for the connecting bolt (5) located at the inclined position of the bottom surface of the top plate of the concrete box girder, a wedge block (12) is arranged between the connecting nut (6) at the bottom and the bottom surface of the top plate of the concrete box girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120799971.2U CN215164563U (en) | 2021-04-19 | 2021-04-19 | Connecting structure of steel box girder and concrete box girder in beam bridge with steel-concrete composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120799971.2U CN215164563U (en) | 2021-04-19 | 2021-04-19 | Connecting structure of steel box girder and concrete box girder in beam bridge with steel-concrete composite structure |
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| Publication Number | Publication Date |
|---|---|
| CN215164563U true CN215164563U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120799971.2U Active CN215164563U (en) | 2021-04-19 | 2021-04-19 | Connecting structure of steel box girder and concrete box girder in beam bridge with steel-concrete composite structure |
Country Status (1)
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| CN (1) | CN215164563U (en) |
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2021
- 2021-04-19 CN CN202120799971.2U patent/CN215164563U/en active Active
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