CN203307719U - Large-cantilever steel web carinal box girder section - Google Patents
Large-cantilever steel web carinal box girder section Download PDFInfo
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- CN203307719U CN203307719U CN201320257524XU CN201320257524U CN203307719U CN 203307719 U CN203307719 U CN 203307719U CN 201320257524X U CN201320257524X U CN 201320257524XU CN 201320257524 U CN201320257524 U CN 201320257524U CN 203307719 U CN203307719 U CN 203307719U
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Abstract
The utility model discloses a large-cantilever steel web carinal box girder section. The large-cantilever steel web carinal box girder section comprises a unit box girder bottom board and a unit box girder top board, two steel webs are arranged between the unit box girder bottom board and the unit box girder top board, the unit box girder top board comprises a top board cross beam and wing boards, the top board cross beam is arranged in the middle, the wind boards are fixedly connected to the two transverse sides of the top board cross beam, a reinforcing system is arranged between the outer transverse side of each wing board and the unit box girder bottom board, and the unit box girder top board is provided with a top board prestress hole channel in the longitudinal direction; the two longitudinal ends of each steel web are provided with bolting preformed holes; the unit box girder bottom board is provided with a bottom board prestress hole channel in the longitudinal direction. Various components in the large-cantilever steel web carinal box girder section are of sectional type structures, gradation hoisting can be adopted, the hoisting weight is light, requirements for conveying and hoisting equipment are greatly reduced, and a normal truck-mounted crane or a crawler crane can complete construction by being matched with a small-tonnage girder transporting vehicle.
Description
Technical field
The utility model relates to the bridge construction technical field, relates in particular to a kind of large Steel Cantilever web spine beam sections.
Background technology
At present, in the bridge construction technical field, being most widely used of concrete box-beam bridge and steel reinforced concrete combination box beam bridge, web in this scheme is the concrete web, construction inconvenience in transportation and hoisting process, and also the concrete web is easy to crack, its shear strength is lower, specifically has following shortcoming:
1, the thickness of concrete web is 300 ~ 800mm, and its deadweight is heavier, and the upper and lower part Structural Engineering of web is increased, and increased accordingly project total cost, and anti seismic efficiency is poor;
2, concrete web structure poor performance, its prestressing force weak effect;
3, site operation efficiency is low, and the transportation of concrete web steel web and lifting are also inconvenient.
4, the concrete web is affected by the factors such as external force load, is prone to cracking phenomena, to such an extent as to cause reinforcement corrosion will keep in repair the problems such as reinforcement.
Therefore, need improve prior art.
The utility model content
The purpose of this utility model just is to solve the deficiency of above-mentioned background technology, and a kind of large Steel Cantilever web spine beam sections of convenient and quick construction is provided.
The technical solution of the utility model is: a kind of large Steel Cantilever web spine beam sections, it comprises Cell beam base plate and Cell back plate, it is characterized in that: be provided with two blocks of steel webs between described Cell beam base plate and Cell back plate, described Cell back plate comprises the roof rail that is arranged on middle part and the wing plate that is fixedly connected on the roof rail both lateral sides, between wing plate lateral outer side and Cell beam base plate, be provided with the system of putting more energy into, described Cell back plate longitudinally is provided with the top board prestressed pore passage; The vertical two ends of described steel web are provided with the bolt preformed hole; Described Cell beam base plate longitudinally is provided with the baseboard prestress duct.
In such scheme:
Described roof rail is fixedly connected with by the U-shaped bar splice that is arranged on the roof rail transverse ends with wing plate.
Described wing plate is large cantilever wing plate, and the lateral length of described wing plate is no less than 5m.
The described system of putting more energy into is diagonal brace.
Described steel web is Wavelike steel webplate.
Described steel web is embedded in Cell beam base plate/Cell back plate.
Between described steel web both lateral sides and Cell beam base plate/Cell back plate, be provided with connector, described steel web, connector, Cell beam base plate/Cell back plate are connected successively the reinforcing bar level and pass also fastening.
Described steel web end is fixedly connected with junction plate, and described junction plate is embedded in Cell beam base plate/Cell back plate, described junction plate, Cell beam base plate/Cell back plate by peg vertically to passing and fastening.
The end face of described Cell beam base plate and Cell back plate is provided with the convex shear connector, is being provided with described Cell beam base plate and assembled another Cell beam base plate of Cell back plate and the end face of Cell back plate the matrix shear connector cooperatively interacted with the convex shear connector.
A kind of construction technology of large Steel Cantilever web spine beam sections, is characterized in that, comprises following steps:
1), the steel web is embedded in Cell beam base plate and Cell back plate, and complete concrete the building of Cell beam base plate and Cell back plate, the steel web is fixedly connected with Cell beam base plate, Cell back plate, namely completes building of a Cell girder segment;
2), take and build the Cell girder segment and be the end mould, coupling is built the adjacent cells section box girder successively;
3), by building box girder segment, be transported to the bridge location place;
4), assembled box girder segment successively, assembled after the fixing steel web of adjacent segment;
5), the system of putting more energy into is installed.
The utility model has the advantage of:
(1), the steel web in the utility model, its thickness is about 8 ~ 30mm, than thick and heavy concrete web, under equal deck-molding and the wide condition of bridge, the steel web is only 60 ~ 70% of conventional concrete web box girder sections deadweight, and the engineering quantity of its upper and lower part structure is reduced, and saves constructional materials, its remarkable in economical benefits, reduce project total cost;
(2), Wavelike steel webplate deadweight reduces, anti-seismic performance is good: adopt the bridge deadweight of Wavelike steel webplate to compare and approximately alleviate 20% with the bridge that adopts the concrete web, cause the seismic stimulation action effect significantly to reduce, anti-seismic performance obtains certain raising;
(3), improve the web shear strength, reduce prestressed consumption, significantly improve structural performance: the longitudinal rigidity of Wavelike steel webplate is less, resist hardly axial force, thereby do not resisted when importing prestressing force, longitudinal restraint power can concentrated loading and case beam base plate/case back plate on, thereby effectively improve prestressing force efficiency;
(4), the utility model is by prefabricated, assembled by each member segments formula, alleviated the weight of each several part, realized the lightness of prefabricated units, unique form of structure makes it to be more suitable for the wide cut Loads of Long-span Bridges, and can effectively guarantee the rigidity of structure;
(5), the structure each several part is prefabricated complete after, cast-in-place junction forms box girder, realized the section box girder construction of breaking the whole up into parts, greatly reduce the requirement of traditional handicraft to prefabricated, transportation and erection equipment, improved the assembled economy of precast segment, be beneficial to factorial construction, can guarantee construction quality, accelerated again construction speed.
The accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of the utility model after assembled;
Fig. 3 is the steel web structure schematic diagram in the utility model;
Fig. 4 is the annexation schematic diagram embodiment mono-of the steel web in the utility model;
Fig. 5 is the annexation schematic diagram embodiment bis-of the steel web in the utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, is convenient to be well understood to the utility model, but they do not form and limit the utility model.
A kind of large Steel Cantilever web spine beam sections as shown in FIG., it comprises Cell beam base plate 1 and Cell back plate 2, between Cell beam base plate 1 and Cell back plate 2, be provided with two blocks of steel webs 3, Cell back plate 2 comprises the roof rail 2.1 that is arranged on middle part and the wing plate 2.2 that is fixedly connected on roof rail 2.1 both lateral sides, wing plate 2.2 is no less than the large cantilever wing plate of 5m for lateral length, between wing plate 2.2 lateral outer side and Cell beam base plate 1, be provided with the system of putting more energy into 4, Cell back plate 2 longitudinally is provided with top board prestressed pore passage 2.3; The vertical two ends of steel web 3 are provided with bolt preformed hole 3.1; Cell beam base plate 1 longitudinally is provided with baseboard prestress duct 1.1.
In the utility model, the top board prestressed pore passage 2.3 that Cell back plate 2 is provided with is passed by reinforcing bar when splicing, Cell back plate 2 is longitudinally spliced, the bolt preformed hole 3.1 that steel web 3 is provided with can make steel web 3 longitudinal spliced by bolt etc. in when splicing, the baseboard prestress duct 1.1 that Cell beam base plate 1 is provided with is passed by reinforcing bar when splicing, Cell beam base plate 1 is longitudinally spliced when splicing.
In the utility model:
Roof rail 2.1 is fixedly connected with by the U-shaped bar splice 2.4 that is arranged on the roof rail transverse ends with wing plate 2.3, during connection, U-shaped bar splice 2.4 two ends enter respectively in roof rail 2.1 and wing plate 2.3, and wing plate 2.3 also can adopt the mode of poured in place concrete to construct.
The system of putting more energy into 4 is diagonal brace, can be used for guard box girder construction intensity.
Steel web 3 is Wavelike steel webplate.
Embodiment mono-:
As shown in Figure 4, steel web 3 is embedded in Cell beam base plate 1/ Cell back plate 2, between steel web 3 both lateral sides and Cell beam base plate 1/ Cell back plate 2, be provided with connector 5, steel web 3, connector 5, Cell beam base plate 1/ Cell back plate 2 are connected successively reinforcing bar 7 levels and pass also fastening.
Implement two:
As shown in Figure 5, steel web 3 is embedded in Cell beam base plate 1/ Cell back plate 2, steel web 3 ends are fixedly welded with junction plate 6, junction plate 6 is embedded in Cell beam base plate 1/ Cell back plate 2, junction plate 6, Cell beam base plate 1/ Cell back plate 2 by peg 8 vertically to passing and fastening.
In the utility model, the end face of Cell beam base plate 1 and Cell back plate 2 is provided with the convex shear connector, is being provided with Cell beam base plate 1 and assembled another Cell beam base plate 1 of Cell back plate 2 and the end face of Cell back plate 2 the matrix shear connector cooperatively interacted with the convex shear connector.
A kind of construction technology of large Steel Cantilever web spine beam sections comprises following steps:
1), steel web 3 is embedded in Cell beam base plate 1 and Cell back plate 2, and concrete the building that completes Cell beam base plate 1 and Cell back plate 2, steel web 3 is fixedly connected with Cell beam base plate 1, Cell back plate 2, namely completes building of a Cell girder segment;
2), take and build the Cell girder segment and be the end mould, coupling is built the adjacent cells section box girder successively;
3), by building box girder segment, be transported to the bridge location place by conveying arrangements such as transport vehicles;
4), adopt Bridge Erector or other lifting appliances assembled box girder segment successively, assembled after the fixing steel web of adjacent segment, and prestressed strand in tensioned unit case back plate, Cell beam base plate;
5), the system of putting more energy into is installed, make it to form whole stress system.
The just large Steel Cantilever web of the utility model spine precast box girder segment is " breaking the whole up into parts " first, the construction technology of " turning parts into the whole " afterwards, namely at first in precasting yard, according to construction requirement, Cell beam base plate 1 and Cell back plate 2 are carried out to segmented prefabricated, alleviate its weight, by lifting appliance (Bridge Erector or crane etc.), undertaken subsequently assembledly, and the connection completed between Cell beam base plate 1, steel web 3, Cell back plate 2 is assembled.In the utility model, each member is segmentation structure, can adopt the gradation lifting, and lifting weight is little, and transportation and lifting appliance are required greatly to reduce, and conventional mobile crane or crawler crane, be equipped with little tonnage Beam transportation vehicle and can complete construction.
The utility model not only can carry out vertical sections of case beam and divide, also can laterally divide according to its ingredient, the application of Wavelike steel webplate in addition, making it the prefabricated units lift heavy reduces greatly, further improving economy, applicability and the efficiency of construction of sections coupling precast assembly new technology, is the manufacturing process of a kind of standardization, batch production, lightness.
Claims (9)
1. large Steel Cantilever web spine beam sections, it comprises Cell beam base plate and Cell back plate, it is characterized in that: be provided with two blocks of steel webs between described Cell beam base plate and Cell back plate, described Cell back plate comprises the roof rail that is arranged on middle part and the wing plate that is fixedly connected on the roof rail both lateral sides, between wing plate lateral outer side and Cell beam base plate, be provided with the system of putting more energy into, described Cell back plate longitudinally is provided with the top board prestressed pore passage; The vertical two ends of described steel web are provided with the bolt preformed hole; Described Cell beam base plate longitudinally is provided with the baseboard prestress duct.
2. a kind of large Steel Cantilever web spine beam sections according to claim 1, it is characterized in that: described roof rail is fixedly connected with by the U-shaped bar splice that is arranged on the roof rail transverse ends with wing plate.
3. a kind of large Steel Cantilever web spine beam sections according to claim 1, it is characterized in that: described wing plate is large cantilever wing plate, and the lateral length of described wing plate is no less than 5m.
4. large Steel Cantilever web spine beam sections according to claim 1, it is characterized in that: the described system of putting more energy into is diagonal brace.
5. large Steel Cantilever web spine beam sections according to claim 1, it is characterized in that: described steel web is Wavelike steel webplate.
6. large Steel Cantilever web spine beam sections according to claim 1, it is characterized in that: described steel web is embedded in Cell beam base plate/Cell back plate.
7. large Steel Cantilever web spine beam sections according to claim 6, it is characterized in that: between described steel web both lateral sides and Cell beam base plate/Cell back plate, be provided with connector, described steel web, connector, Cell beam base plate/Cell back plate are connected successively the reinforcing bar level and pass also fastening.
8. large Steel Cantilever web spine beam sections according to claim 6, it is characterized in that: described steel web end is fixedly connected with junction plate, described junction plate is embedded in Cell beam base plate/Cell back plate, described junction plate, Cell beam base plate/Cell back plate by peg vertically to passing and fastening.
9. large Steel Cantilever web spine beam sections according to claim 1, it is characterized in that: the end face of described Cell beam base plate and Cell back plate is provided with the convex shear connector, is being provided with described Cell beam base plate and assembled another Cell beam base plate of Cell back plate and the end face of Cell back plate the matrix shear connector cooperatively interacted with the convex shear connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320257524XU CN203307719U (en) | 2013-05-13 | 2013-05-13 | Large-cantilever steel web carinal box girder section |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320257524XU CN203307719U (en) | 2013-05-13 | 2013-05-13 | Large-cantilever steel web carinal box girder section |
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| CN203307719U true CN203307719U (en) | 2013-11-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276662A (en) * | 2013-05-13 | 2013-09-04 | 中交第二航务工程局有限公司 | Large-cantilever steel web spinal box beam segment and construction technology |
| CN104493961A (en) * | 2014-12-10 | 2015-04-08 | 中交第二航务工程局有限公司 | Prefabricated formwork system for variable-width multi-box corrugated steel web box beams |
| CN107724224A (en) * | 2017-09-30 | 2018-02-23 | 深圳市市政设计研究院有限公司 | Trapezoidal clad steel plate mixed structure box beam and method of construction |
| CN114481842A (en) * | 2021-12-31 | 2022-05-13 | 安徽省公路桥梁工程有限公司 | Large cantilever steel spine beam auxiliary splicing device and construction method thereof |
-
2013
- 2013-05-13 CN CN201320257524XU patent/CN203307719U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276662A (en) * | 2013-05-13 | 2013-09-04 | 中交第二航务工程局有限公司 | Large-cantilever steel web spinal box beam segment and construction technology |
| CN103276662B (en) * | 2013-05-13 | 2015-09-16 | 中交第二航务工程局有限公司 | Large-cantilever steel web spinal box beam segment |
| CN104493961A (en) * | 2014-12-10 | 2015-04-08 | 中交第二航务工程局有限公司 | Prefabricated formwork system for variable-width multi-box corrugated steel web box beams |
| CN107724224A (en) * | 2017-09-30 | 2018-02-23 | 深圳市市政设计研究院有限公司 | Trapezoidal clad steel plate mixed structure box beam and method of construction |
| CN114481842A (en) * | 2021-12-31 | 2022-05-13 | 安徽省公路桥梁工程有限公司 | Large cantilever steel spine beam auxiliary splicing device and construction method thereof |
| CN114481842B (en) * | 2021-12-31 | 2023-12-08 | 安徽省公路桥梁工程有限公司 | Large cantilever steel backbone beam auxiliary splicing device and construction method thereof |
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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: 20131127 Termination date: 20200513 |