CN212925815U - Steel-concrete structure joint section connecting structure - Google Patents
Steel-concrete structure joint section connecting structure Download PDFInfo
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- CN212925815U CN212925815U CN202021193178.XU CN202021193178U CN212925815U CN 212925815 U CN212925815 U CN 212925815U CN 202021193178 U CN202021193178 U CN 202021193178U CN 212925815 U CN212925815 U CN 212925815U
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Abstract
The utility model relates to a steel-concrete structure joint section connection structure. The steel box girder comprises a concrete box girder segment with a concrete box girder wet joint, a steel box girder standard segment with a steel box girder rigidity transition section and a steel-concrete combination section, wherein the concrete box girder segment is connected with one side of the steel-concrete combination section through the concrete box girder wet joint; the steel grating chamber is internally and transversely provided with a plurality of shear plates and a plurality of PBL shear keys in a longitudinal arrangement. This product can improve the connected mode of traditional steel-concrete structure joint section, improves steel-concrete joint section construction quality, simplifies the connected mode of steel-concrete joint section and concrete segment section to reduce the construction risk, improve structure life.
Description
Technical Field
The utility model relates to a building field is a novel reinforced concrete structure joint section connection structure.
Background
The prior art is that the component at the steel-concrete combined section steel construction position is prefabricated at the mill, hoists to concrete box girder segment working face through the loop wheel machine, installs interim skeleton and locking, hangs the basket and walks to steel-concrete combined section bottom, and the interim skeleton of uninstallation lets the steel box girder put on hanging the basket bottom plate, and after the location adjustment, pours steel-concrete combined section concrete.
The above technique has the following disadvantages: (1) the steel bars at the steel-concrete combined section are dense, the steel bars, the prestress, the partition plates and the like are dense, the structure is complex, and the on-site concrete pouring quality is difficult to control. (2) When the steel-concrete combined section top plate is poured, because the steel-concrete combined section has a top steel plate, the steel-concrete combined section top plate is easy to be poured unsatisfactorily or incompact.
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is that the above-mentioned problem that prior art exists aims at providing a neotype steel-concrete structure linkage segment connection structure, improves the connected mode of traditional steel-concrete structure linkage segment, can improve steel-concrete linkage segment construction quality, simplifies the connected mode of steel-concrete linkage segment and concrete segment section simultaneously to reduce the construction risk, improve structure life.
For solving the technical problem, the utility model provides a steel-concrete structure joint section connection structure, including the concrete box girder segment section that has the wet joint of concrete box girder and the steel box girder standard section that has steel box girder rigidity changeover portion, characterized by still includes the steel-concrete joint section, concrete box girder segment section pass through the wet joint of concrete box girder and be connected with steel-concrete joint section one side, steel box girder standard section pass through steel box girder rigidity changeover portion and be connected with steel-concrete joint section opposite side, steel-concrete joint section external structure adopts the steel sheet to make.
Preferably, the top plate, the bottom plate, the web plate and the side plates of the combined part of the steel-concrete combined section and the concrete box girder are respectively surrounded by a top plate double-wall plate, a bottom plate double-wall plate, a web plate double-wall plate and a base plate to form a steel grid chamber.
Preferably, a plurality of shear plates are transversely arranged inside the steel grating chamber, a plurality of PBL shear keys are longitudinally arranged, and concrete is filled inside the steel grating chamber.
Preferably, if the short prestressed steel bundles are arranged in the steel grid chamber, one end of each short prestressed steel bundle is anchored at a concrete box girder segment, and the other end of each short prestressed steel bundle is anchored at a steel box girder rigidity transition section.
Preferably, a top plate T-shaped stiffening rib and a bottom plate T-shaped stiffening rib are respectively arranged at the top and bottom plate positions of the steel box girder rigidity transition section.
Preferably, the concrete used for the steel-concrete joint section and the concrete box girder wet joint is C50 micro-expansion concrete.
Preferably, the combined part of the steel-concrete combined section and the steel box girder is processed and manufactured according to the structural size of the rigidity transition section of the steel box girder.
Compared with the prior art, the beneficial effects of the utility model are that:
the steel-concrete combined section of the product is processed and manufactured in a factory, the construction problems that the concrete pouring quality of the steel-concrete combined section is difficult to control and the concrete pouring of the steel cell roof is not compact and the like are effectively solved, the structural integrity is better, the overall rigidity is smooth in transition, and the service life is longer.
Drawings
Fig. 1 is a schematic structural diagram of the product of this embodiment.
Fig. 2 is a schematic structural view of the steel cell in this embodiment.
FIG. 3 is a schematic structural diagram of a T-shaped stiffener for a ceiling in accordance with the present embodiment.
FIG. 4 is a schematic structural diagram of a T-shaped stiffener for a base plate in this embodiment.
Fig. 5 is a schematic structural diagram of the shear key in the present embodiment.
Fig. 6 is a schematic structural diagram of the shear plate in this embodiment.
Description of reference numerals: 1-concrete box girder segment; 2-wet joint of concrete box girder; 3-steel-concrete combined section; 4, a steel box girder rigidity transition section; 5, a standard section of the steel box girder; 6-roof T-shaped stiffeners; 7-bottom plate T-shaped stiffening ribs; 8-steel cells; 9-a backing plate; 10-a shear plate; 11-bottom plate double wall plate; 12-web double wall panels; 13-roof double wall panel; 14-PBL shear key; and 15, prestressed short steel bundles.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The design concept is as follows: through providing a neotype steel-concrete structure joint section connection structure, improve the connected mode of traditional steel-concrete structure joint section, improve structure life.
In the embodiment, the concrete box girder segment 1, the concrete box girder wet joint 2, the steel box girder rigidity transition section 4, the steel box girder standard section 5, etc. are all names of ordinary technologies in the art, and those skilled in the art can easily know the names in conjunction with the drawings, so detailed description is omitted.
Example (b):
as shown in fig. 1-6, the present embodiment includes five parts, namely a concrete box girder segment 1, a concrete box girder wet joint 2, a steel-concrete joint section 3, a steel box girder rigidity transition section 4 and a steel box girder standard section 5. The concrete box girder segment 1 is poured section by adopting a conventional hanging basket construction method. The external structure of the steel-concrete combined section 3 is made by welding steel plates and is processed and manufactured in a standardized factory, wherein the top plate, the bottom plate, the web plate and the side plates of the combined part of the steel-concrete box girder are respectively made into a steel lattice chamber 8 by adopting a top plate double-wall plate 13, a bottom plate double-wall plate 11, a web plate double-wall plate 12 and a base plate 9, a plurality of shear plates 10 are transversely arranged in the steel lattice chamber 8, a plurality of PBL shear keys 14 are longitudinally arranged, and C50 micro-expansion concrete is filled in the steel lattice chamber 8. The whole reinforced concrete combined section is transported to a bridge construction site after being processed and manufactured in a factory, is hoisted to the working surface of the concrete box girder segment 1 through a crane, installs a temporary framework and locks, a hanging basket walks to the bottom of the reinforced concrete combined section, unloads the temporary framework, allows the reinforced concrete combined section 3 to be placed on a hanging basket bottom plate, and binds the concrete box girder wet joint reinforcing steel bars and pours the concrete box girder wet joint after positioning adjustment.
The combined part of the steel-concrete combined section 3 and the steel box girder is processed and manufactured according to the structural size of the steel box girder rigidity transition section 4, and the effective splicing of the steel box girder rigidity transition section at the later stage is ensured. The steel box girder rigidity transition section 4 and the steel box girder standard section 5 are processed and manufactured in a standardized factory, so that the manufacturing precision and the product quality of the component are ensured, the workload of field construction is greatly reduced, and the standardization of bridge construction is facilitated.
In the embodiment, as shown in fig. 2, if the short prestressed steel bundles 15 are arranged in the steel grid chamber 8, one end of each short prestressed steel bundle 15 is anchored at the concrete box girder segment 1, and the other end of each short prestressed steel bundle is anchored at the steel box girder rigidity transition section 4. The prestressed short steel beam 15 can ensure the tight connection between the steel beam and the concrete beam, and the overall rigidity transition is smooth without generating larger stress concentration phenomenon. And a top plate T-shaped stiffening rib 6 and a bottom plate T-shaped stiffening rib 7 are respectively arranged at the top and bottom plate positions of the steel box girder rigidity transition section 4, so that reasonable transition of section rigidity is ensured, pressure transmission is ensured, and local instability of a steel plate piece is avoided.
The concrete used for the steel-concrete joint 3 and the concrete box girder wet joint 2 in the embodiment is C50 micro-expansion concrete. The C50 micro-expansive concrete has certain crack resistance and good anti-fatigue effect, and the service life of the steel-concrete combined section structure is prolonged.
Compared with a traditional steel-concrete structure combining section connecting structure, the steel-concrete combining section is processed and manufactured in a factory, the construction problems that the concrete pouring quality of the steel-concrete combining section is difficult to control and the concrete pouring of a steel cell roof is not compact and the like are effectively solved, the structural integrity is better, the overall rigidity is smooth in transition, and the service life is longer.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a steel-concrete structure joint section connection structure, includes the concrete box girder segment section that has the wet joint of concrete box girder and the steel box girder standard section that has steel box girder rigidity changeover portion, its characterized in that: the concrete box girder section is connected with one side of the steel-concrete combined section through a concrete box girder wet joint, the standard section of the steel box girder is connected with the other side of the steel-concrete combined section through a steel box girder rigidity transition section, and the external structure of the steel-concrete combined section is made of steel plates;
the top plate, the bottom plate, the web plate and the side plates at the combined part of the steel-concrete combined section and the concrete box girder are respectively surrounded by a top plate double-wall plate, a bottom plate double-wall plate, a web plate double-wall plate and a base plate to form a steel grid chamber; the steel grating chamber is internally and transversely provided with a plurality of shear plates, a plurality of PBL shear keys are longitudinally arranged, and concrete is filled in the steel grating chamber.
2. The connecting structure of the steel-concrete structure joint section according to claim 1, wherein: if the steel grid chamber is internally provided with the short prestressed steel bundles, one end of each short prestressed steel bundle is anchored at the concrete box girder segment, and the other end of each short prestressed steel bundle is anchored at the steel box girder rigidity transition section.
3. The connecting structure of the steel-concrete structure joint section according to claim 1, wherein: and the top plate and the bottom plate of the rigidity transition section of the steel box girder are respectively provided with a top plate T-shaped stiffening rib and a bottom plate T-shaped stiffening rib.
4. The connecting structure of the steel-concrete structure joint section according to claim 1, wherein: the concrete used for the steel-concrete joint section and the concrete box girder wet joint is C50 micro-expansion concrete.
5. The connecting structure of the steel-concrete structure joint section according to claim 1, wherein: and the combined part of the steel-concrete combined section and the steel box girder is processed and manufactured according to the structural size of the rigidity transition section of the steel box girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021193178.XU CN212925815U (en) | 2020-06-24 | 2020-06-24 | Steel-concrete structure joint section connecting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021193178.XU CN212925815U (en) | 2020-06-24 | 2020-06-24 | Steel-concrete structure joint section connecting structure |
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| CN212925815U true CN212925815U (en) | 2021-04-09 |
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| CN202021193178.XU Active CN212925815U (en) | 2020-06-24 | 2020-06-24 | Steel-concrete structure joint section connecting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756172A (en) * | 2021-08-16 | 2021-12-07 | 中铁华铁工程设计集团有限公司 | Large-span high-low tower double-cable-plane mixed beam cable-stayed bridge and construction method thereof |
| CN114703738A (en) * | 2021-12-30 | 2022-07-05 | 中交公路长大桥建设国家工程研究中心有限公司 | Ultra-high performance concrete steel-concrete combined section |
-
2020
- 2020-06-24 CN CN202021193178.XU patent/CN212925815U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756172A (en) * | 2021-08-16 | 2021-12-07 | 中铁华铁工程设计集团有限公司 | Large-span high-low tower double-cable-plane mixed beam cable-stayed bridge and construction method thereof |
| CN113756172B (en) * | 2021-08-16 | 2023-03-10 | 中铁华铁工程设计集团有限公司 | Construction method of large-span high-low tower double-cable-plane mixed beam cable-stayed bridge |
| CN114703738A (en) * | 2021-12-30 | 2022-07-05 | 中交公路长大桥建设国家工程研究中心有限公司 | Ultra-high performance concrete steel-concrete combined section |
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