CN104988843A - Bridge combined by steel structural box girder and concrete bridge deck panel - Google Patents
Bridge combined by steel structural box girder and concrete bridge deck panel Download PDFInfo
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- CN104988843A CN104988843A CN201510419514.5A CN201510419514A CN104988843A CN 104988843 A CN104988843 A CN 104988843A CN 201510419514 A CN201510419514 A CN 201510419514A CN 104988843 A CN104988843 A CN 104988843A
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- bridge
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- box girder
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Abstract
The invention provides a bridge combined by a steel structural box girder and a concrete bridge deck panel. The lower part of the bridge is provided with the steel structural box girder (1); the bridge deck panel is in a concrete structure; the concrete-structured bridge deck panel is integrated with the steel structural box girder via a shear key (4); two ends of the steel structural box girder are arranged on bearers (6) of two adjacent bridge piers (5); the steel structural box girder (1) is opened on the top, in a groove shape and has a top plate (1a); the shear key (4) is welded on the top surface of the top plate (1a); and the concrete is cast on the top plate and connected with the top plate via the shear key. Advantages of large bearing capacity of the steel major body and great durableness of the concrete panel are integrated in the bridge; and construction period and maintenance period are greatly shortened compared with a concrete structural bridge.
Description
Technical field
The invention belongs to bridge construction technical field.
Background technology
The bridge that current building engineering field is built is substantially all concrete structure or pure steel structure.The concrete slab good endurance of concrete structure bridge, but exist from great, cross section is thick, and when causing building bridge, bottom bent cap, bridge pier, cushion cap all must increase.In addition, concrete-bridge is cast in situs, long construction period, and curing period is also longer, and concrete-bridge also exists a large amount of concrete block after removing and cannot recycle.Pure steel structure bridge capacity is large, but bridge deck easily produce fatigue crack.
Summary of the invention
The object of the invention is the deficiency existed separately to solve simple concrete-bridge or steel structure bridge, the steel-structure box girder providing can greatly shorten compared with concrete structure bridge a kind of advantage, construction period and curing period collecting the large and concrete slab good endurance of steel agent structure bearing capacity and concrete slab combined bridge.
Object of the present invention is achieved through the following technical solutions.
Steel-structure box girder and concrete slab combined bridge, the substructure of this bridge is steel-structure box girder, bridge deck are concrete structure, and concrete structure bridge deck are connected as a whole with steel-structure box girder by shear key, and steel-structure box girder two ends are placed on the bearing of adjacent two bridge piers; Described steel-structure box girder is the upper shed flute profile case beam of band top board, and shear key is welded in the end face of top board, and concreting is connected as one by shear key and top board on top board.
More than the two flute profile case beams that the upper shed flute profile case beam of steel-structure box girder of the present invention is a flute profile case beam or be arranged in parallel, are connected by auxiliary girder steel between adjacent flute profile steel box-girder, whole flute profile steel box-girder are connected to form an integrated member.
The present invention adopts the form of structure of steel work and concrete composite bridge, gives full play to the advantage of the large and concrete slab good endurance of steel-structure box girder agent structure bearing capacity.Steel-structure box girder and concrete slab are jointly stressed, greatly reduce weight and the rolled steel dosage of bridge, and unit area bridge weight is 1/3 of pure concrete bridge weight, and unit area rolled steel dosage is reduced to 145kg/m
2, be 1/3 of pure steel box-girder weight.Simultaneously because the purer concrete structure bridge of thickness of concrete slab reduces, construction period and curing period also shorten greatly, can significantly improve efficiency of construction.
Accompanying drawing explanation
Fig. 1 is structural scheme of mechanism of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1 Bridge.
Detailed description of the invention
See the steel-structure box girder shown in Fig. 1, Fig. 2 and concrete slab combined bridge, the substructure of this bridge is steel-structure box girder 1, bridge deck 3 are concrete structure, concrete structure bridge deck are connected as a whole with steel-structure box girder by shear key 4, and steel-structure box girder two ends are placed on the bearing 6 of adjacent two bridge piers 5.Described steel-structure box girder 1 is the upper shed flute profile case beam of band top board 1a, and shear key 4 is welded in the end face of top board 1a, and concreting is connected as one by shear key and top board on top board.The shear key 4 of the present embodiment, for being welded on the peg on top board, also can take other can make the structure of concrete and the fastening combination of top board.According to the width of bridge floor, the upper shed flute profile case beam of steel-structure box girder 1 of the present invention only can be designed to a flute profile case beam, also two that can be designed to be arranged in parallel or three or more root flute profile case beam, be welded to connect by auxiliary girder steel 2 between adjacent flute profile steel box-girder, whole flute profile steel box-girder is connected to form an integrated member, and auxiliary girder steel 2 can adopt H profile steel beam.
Claims (2)
1. steel-structure box girder and concrete slab combined bridge, it is characterized in that, the substructure of this bridge is steel-structure box girder (1), bridge deck (3) are concrete structure, concrete structure bridge deck are connected as a whole with steel-structure box girder by shear key (4), and steel-structure box girder two ends are placed on the bearing (6) of adjacent two bridge piers (5); Described steel-structure box girder (1) is the upper shed flute profile case beam of band top board (1a), and shear key (4) is welded in the end face of top board (1a), and concreting is connected as one by shear key and top board on top board.
2. steel-structure box girder according to claim 1 and concrete slab combined bridge, it is characterized in that, more than the two flute profile case beams that the upper shed flute profile case beam of described steel-structure box girder (1) is a flute profile case beam or be arranged in parallel, connected by auxiliary girder steel (2) between adjacent flute profile steel box-girder, whole flute profile steel box-girder is connected to form an integrated member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510419514.5A CN104988843A (en) | 2015-06-04 | 2015-07-16 | Bridge combined by steel structural box girder and concrete bridge deck panel |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520381299 | 2015-06-04 | ||
| CN201520381299X | 2015-06-04 | ||
| CN201510419514.5A CN104988843A (en) | 2015-06-04 | 2015-07-16 | Bridge combined by steel structural box girder and concrete bridge deck panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104988843A true CN104988843A (en) | 2015-10-21 |
Family
ID=54300725
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510419514.5A Pending CN104988843A (en) | 2015-06-04 | 2015-07-16 | Bridge combined by steel structural box girder and concrete bridge deck panel |
| CN201520517348.8U Active CN204780559U (en) | 2015-06-04 | 2015-07-16 | Steel construction case roof beam and concrete bridge panel combination bridge |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520517348.8U Active CN204780559U (en) | 2015-06-04 | 2015-07-16 | Steel construction case roof beam and concrete bridge panel combination bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104988843A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638262A (en) * | 2016-12-29 | 2017-05-10 | 中国冶集团有限公司 | Cross-section variable fish-bellied type box girder concrete symmetric overlapping pouring structure and construction method thereof |
| CN108625269A (en) * | 2018-05-04 | 2018-10-09 | 西安市政设计研究院有限公司 | A kind of the part opening girder steel and its construction technology of function division design |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106013837B (en) * | 2016-07-19 | 2019-12-17 | 关喜才 | Method and structure system for increasing bearing capacity by combining existing floor and steel structure support |
-
2015
- 2015-07-16 CN CN201510419514.5A patent/CN104988843A/en active Pending
- 2015-07-16 CN CN201520517348.8U patent/CN204780559U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638262A (en) * | 2016-12-29 | 2017-05-10 | 中国冶集团有限公司 | Cross-section variable fish-bellied type box girder concrete symmetric overlapping pouring structure and construction method thereof |
| CN106638262B (en) * | 2016-12-29 | 2019-04-23 | 中国一冶集团有限公司 | Variable cross-section fish-belly box beam concrete symmetrically overlaps pouring structure and its construction method |
| CN108625269A (en) * | 2018-05-04 | 2018-10-09 | 西安市政设计研究院有限公司 | A kind of the part opening girder steel and its construction technology of function division design |
Also Published As
| Publication number | Publication date |
|---|---|
| CN204780559U (en) | 2015-11-18 |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151021 |
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| WD01 | Invention patent application deemed withdrawn after publication |