CN204266110U - A kind of double-layer bridge-floor cable stayed bridge main beam structure system - Google Patents
A kind of double-layer bridge-floor cable stayed bridge main beam structure system Download PDFInfo
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- CN204266110U CN204266110U CN201420460960.1U CN201420460960U CN204266110U CN 204266110 U CN204266110 U CN 204266110U CN 201420460960 U CN201420460960 U CN 201420460960U CN 204266110 U CN204266110 U CN 204266110U
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Abstract
The utility model discloses a kind of double-layer bridge-floor cable stayed bridge main beam structure form, across girder and end bay girder structural form in comprising, is Steel truss structure form across girder in it is characterized in that; End bay girder forms one by the shaped steel chord member of external wrapping concrete, steel web member and prestressed concrete crossbeam and concrete slab, contains steel work, steel reinforced concrete, prestressed concrete three kinds of form of structure, constitutes composite structural truss system.This structural system is by component dissimilar for steel rod elements, concrete rod and steel reinforced concrete rod member three kinds, reasonably be used in cable stayed bridge girder truss according to its performance characteristics, reach the object effectively playing respective advantage, significantly reduce steel using amount, material economic indicator is superior.Meanwhile, the compound truss structure of larger deadweight shortens the length of cable stayed bridge end bay effectively, reduces main bridge gauge mould, has very high economic benefit.Simultaneously maintain again the harmonious landscape effect of full-bridge girder.
Description
Technical field
The utility model relates to the technical field of bridge engineering, specifically a kind of double-layer bridge-floor cable stayed bridge main beam structure system.
Background technology
Long span double-layer bridge-floor cable stayed bridge adopts steel truss form usually, and when main span adopts steel truss girder as stiff girder, the adoptable form of general end bay is: steel truss girder, one-course concrete case beam, superimposed girder truss.
When end bay also adopts steel truss girder, end bay need be increased across footpath, and arrange ballast with in balance across larger deadweight, the steel using amount of steel truss girder is large, and cost is high.When adopting superimposed girder truss scheme, although add concrete slab, its deadweight intensity is still less, still need to increase end bay length with in balance across deadweight, and the steel using amount of superimposed girder truss is higher, thus cause that main bridge gauge mould increases, cost is higher.
Utility model content
The purpose of this utility model is, for the design of double-deck cable stayed bridge provides a kind of novel double-layer bridge-floor cable stayed bridge main beam structure system, can reduce steel using amount, realize the reasonability of bridge construction technology, economy, comfortableness simultaneously.
To achieve these goals, the technical solution of the utility model is as follows: a kind of double-layer bridge-floor cable stayed bridge main beam structure system, across girder and end bay girder structural form in comprising, adopt plate girder Combined steel truss beam in it is characterized in that across girder, end bay girder adopts composite truss beam.In adopt steel truss and Orthotropic Steel Bridge Deck to weld together completely across girder form of structure; End bay girder is linked into an integrated entity by the shaped steel chord member of external wrapping concrete, steel web member and prestressed concrete crossbeam and concrete slab, constitutes composite structural truss system, contains steel work, steel reinforced concrete, prestressed concrete three kinds of form of structure.The purlin formula of its trussed construction adopts Hua Lunshi, N shape purlin or triangle purlin, and cross section is rectangle or inverted trapezoidal formula.
This structural system is by component dissimilar for steel rod elements, concrete rod and steel reinforced concrete rod member three kinds, reasonably be used in cable stayed bridge girder truss according to its performance characteristics, reach the object effectively playing respective advantage, significantly reduce steel using amount, material economic indicator is superior.Meanwhile, the compound truss structure of larger deadweight shortens the length of cable stayed bridge end bay effectively, reduces main bridge gauge mould, has very high economic benefit.Identical across in the situation of footpath, the steel using amount less than superimposed girder truss can be obtained, reduce construction costs further.Simultaneously maintain again the harmonious landscape effect of full-bridge girder.
Accompanying drawing explanation
Fig. 1 is bridge layout figure of the present utility model.
Fig. 2 is middle straddle purlin Combined steel truss beam structural representation.
Fig. 3 is end bay composite truss beam structure schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing 1 ~ 3 and embodiment, the utility model will be further described.
Certain bridge is double deck road oblique roller bridge, main span 708 meters, and girder adopts plate-purlin Combined steel truss beam, and end bay is 4 × 63 meters, and girder adopts compound truss structure system.(see accompanying drawing 1 ~ 3).
In be made up of steel truss and orthotropic steel bridge deck system across girder, chord member and the steel bridge deck of steel truss weld together completely; End bay girder is made up of (see accompanying drawing 3) the shaped steel chord member of external wrapping concrete, steel web member and prestressed concrete crossbeam, concrete slab.
As shown in Figure 2, upper strata orthotropic steel bridge deck system 1 is comprised across girder in described double deck road oblique roller bridge, orthotropic steel bridge deck system of lower floor 2, steel truss web member 3 and steel truss diagonal web member 4, the upper end of steel truss web member 3 is connected with steel truss upper chord 5, the lower end of steel truss web member 3 is connected with steel truss lower chord 6, the upper end of steel truss diagonal web member 4 is connected with steel truss limit chord member 7, the lower end of steel truss diagonal web member 4 is connected with steel truss lower chord 6, steel truss limit chord member 7 and steel truss upper chord 5 are connected with the steel bridge deck of upper strata orthotropic steel bridge deck system 1 respectively, steel truss lower chord 6 is connected with the steel bridge deck being arranged on orthotropic steel bridge deck system of lower floor 2.
As shown in Figure 3, end bay girder comprises upper strata prestressed concrete crossbeam 8, lower floor's prestressed concrete crossbeam 9, steel web member 10 and steel hound 11, the upper end of steel web member 10 is connected with the shaped steel upper chord 12 of external wrapping concrete, the lower end of steel web member 10 is connected with the shaped steel lower chord 13 of external wrapping concrete, the upper end of steel hound 11 is connected with the section steel edge chord member 14 of external wrapping concrete, the lower end of steel hound 11 is connected with the shaped steel lower chord 13 of external wrapping concrete, the shaped steel upper chord 12 of external wrapping concrete and the section steel edge chord member 14 of external wrapping concrete link into an integrated entity with the concrete slab 15 be arranged on upper strata prestressed concrete crossbeam 8 respectively, the shaped steel lower chord 13 of external wrapping concrete links into an integrated entity with the concrete slab 15 be arranged on lower floor's prestressed concrete crossbeam 9.
Claims (3)
1. a main beam structure system for double-layer bridge-floor cable stayed bridge, it mainly comprise in across girder and end bay girder, it is characterized in that: in adopt plate girder Combined steel truss beam across girder, end bay girder adopts composite truss beam.
2. the main beam structure system of a kind of double-layer bridge-floor cable stayed bridge according to claim 1, is characterized in that: in adopt steel truss and the complete welded structure form of Orthotropic Steel Bridge Deck across girder; End bay girder is linked into an integrated entity by the shaped steel chord member of external wrapping concrete, steel web member and prestressed concrete crossbeam and concrete slab, constitutes composite structural truss system.
3. the main beam structure system of double-layer bridge-floor cable stayed bridge according to claim 2, is characterized in that: the purlin formula of its trussed construction adopts Hua Lunshi, N shape purlin or triangle purlin, and cross section is rectangle or inverted trapezoidal formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420460960.1U CN204266110U (en) | 2014-08-15 | 2014-08-15 | A kind of double-layer bridge-floor cable stayed bridge main beam structure system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420460960.1U CN204266110U (en) | 2014-08-15 | 2014-08-15 | A kind of double-layer bridge-floor cable stayed bridge main beam structure system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204266110U true CN204266110U (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420460960.1U Expired - Fee Related CN204266110U (en) | 2014-08-15 | 2014-08-15 | A kind of double-layer bridge-floor cable stayed bridge main beam structure system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204266110U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499415A (en) * | 2014-08-15 | 2015-04-08 | 上海市政工程设计研究总院（集团）有限公司 | Main girder structure system of double-layer bridge deck cable-stayed bridge |
| CN107905084A (en) * | 2017-12-12 | 2018-04-13 | 长沙市公路桥梁建设有限责任公司 | RPC steel truss combined bridge deck and continuous bridge |
-
2014
- 2014-08-15 CN CN201420460960.1U patent/CN204266110U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499415A (en) * | 2014-08-15 | 2015-04-08 | 上海市政工程设计研究总院（集团）有限公司 | Main girder structure system of double-layer bridge deck cable-stayed bridge |
| CN107905084A (en) * | 2017-12-12 | 2018-04-13 | 长沙市公路桥梁建设有限责任公司 | RPC steel truss combined bridge deck and continuous bridge |
| CN107905084B (en) * | 2017-12-12 | 2024-05-14 | 长沙市公路桥梁建设有限责任公司 | RPC steel truss combined bridge deck and continuous beam bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 |