CN202202267U - Cable-stayed system reinforcement structure suitable for large-span box girder bridges and continuous rigid frame bridges - Google Patents
Cable-stayed system reinforcement structure suitable for large-span box girder bridges and continuous rigid frame bridges Download PDFInfo
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- CN202202267U CN202202267U CN2011202703573U CN201120270357U CN202202267U CN 202202267 U CN202202267 U CN 202202267U CN 2011202703573 U CN2011202703573 U CN 2011202703573U CN 201120270357 U CN201120270357 U CN 201120270357U CN 202202267 U CN202202267 U CN 202202267U
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Abstract
The utility model relates to a cable-stayed system reinforcement structure suitable for large-span box girder bridges and continuous rigid frame bridges. Two new pile foundations for drilling and perfusion are additionally arranged on each of the two sides of an original foundation respectively, the new pile foundations are in the same structure as the original foundation, the upper pile diameter is 2.4m, the lower diameter is 2.0m, a new supporting table adopting bar planting and circumferential prestressing measures is used for connecting with an original supporting table, a cable support tower is arranged on the new supporting table, the part above the bridge surface of the cable support tower is 19m high, a bridge tower in the position of a continuous pier adopts a prestressed concrete structure, a tower body sets vertical prestress, the bridge tower in the position of a rigid frame pier adopts an ordinary concrete structure, a bracket is an all-welded box deformation section steel supporting beam, bars are planted on the bottom surface of an original concrete main beam for anchoring a steel support, high-strength bolts are used for fixing the steel supporting beam, and inclined stay cables adopt 1*7-15.20-1860 pre-stressed steel strands. The cable-stayed system reinforcement structure can ensure the safety in operation of the bridges and the smooth traffic, greatly improve the durability of the bridges which are maintained and reinforced, and prolong the service lives of the bridges.
Description
Technical field
The utility model relates to a kind of bridge strengthening structure, especially a kind of low-pylon cable-stayed bridge ruggedized construction of striding footpath box girder bridge, continuous rigid frame bridge greatly that is applicable to.
Background technology
Low-pylon cable-stayed bridge is claimed the part cable stayed bridge again, is a kind of form of structure between cable stayed bridge and Continuous Box Girder Bridge, has effective eccentric throw of bigger prestressed cable, thereby has improved prestressed functioning efficiency.The general beam body of part cable stayed bridge rigidity is bigger, bear most of load action, and suspension cable is equivalent to act on the resiliency supported on the girder, and fellowship is stressed.This bridge type has very strong competitiveness in 100～300m strides the footpath scope.Be applicable to that the prestressed concrete box-beam bridge of striding the footpath more greatly then need carry out the reinforcing punishment of downwarp and cracking.In recent years; Employing tiltedly draws the system reinforcing to stride directly greatly, and prestressed concrete box girder has carried out certain research and exploration both at home and abroad; Because use the transformation of low-pylon cable-stayed bridge form to exist the footpath Continuous Box Girder Bridge of striding greatly of disease to have and suitablely stride directly advantages such as scope is in full accord to what former bridge construction system changed less, cable stayed bridge and prestressed concrete box-beam bridge, this kind quilt adopts in a large number.Adopt the part system of tiltedly drawing to reinforce continuous rigid frame bridge simultaneously, bear the original structure dead load through the vertical component of suspension cable on the one hand, reach the effect that recovers distortion; Horizontal component through suspension cable has increased the girder axial compression on the other hand.
The utility model content
The purpose of the utility model is to provide a kind of system of more reasonably tiltedly drawing to reinforce and strides footpath continuous beam, continuous rigid frame bridge key position structure greatly.
The technical scheme of the utility model is achieved in that and a kind ofly is applicable to that striding footpath box girder bridge, continuous rigid frame bridge greatly tiltedly draws system ruggedized construction, and former pile foundation both sides are respectively 2 new pile foundations that are used for drill-pouring, and new pile foundation is constructed identical with former stake; The top stake directly is 2.4m, and lower diameter is 2.0m, and what be connected with former cushion cap is the new cushion cap that adopts bar planting and ring orientation prestress measure; On the new cushion cap is Sarasota, and the Sarasota bridge floor is high 19 meters with top, and pier place bridge tower adopts prestressed reinforced concrete construction continuously; Body of the tower is provided with vertical prestressing; Just structure pier place bridge tower adopts the ordinary concrete structure, and carriage is full weldering box variable cross-section steel joist, at former concrete girder bottom surface bar planting anchoring steel bracket; And passing through fixedly steel joist of high-strength bolt, suspension cable adopts 1 * 7-15.20-1860 prestressing force steel hinge line.
Joist is for having girder steel or concrete beam.
Joist is affixed with the connected mode of girder or bearing is connected.
The tectonic type of Sarasota has open side type, H type or is applicable to that striding footpath box girder bridge, continuous rigid frame bridge greatly tiltedly draws system ruggedized construction type, adopts concrete towers or head tower form.
The basic connected mode of newly-increased bridge tower and former bridge bridge pier be separate type or with the fixed formula of former bridge pier footing.
Suspension cable is selected 1 * 7-15.20-1860 smooth type epoxy coating strand for use, overcoat HDPE sleeve pipe.
The utility model can guarantee the operation security of bridge and have a good transport and communication network, and the bridge durability of maintenance and reinforcement is improved greatly, prolongs the application life of bridge.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the structural representation of the utility model,
Fig. 2 is the drag-line schematic cross-section
Fig. 3 is joist structure side schematic view
Fig. 4 is joist structure front schematic view
Fig. 5 is the joist size sketch map
1. carriages one among the figure, 2. carriage two, 3. carriage B, 4. the suspension cable fixed end, 5. former pier shaft, 6. kingpost baseplate bottom, 7. former cushion cap, 8. new cushion cap, 9. former pile foundation, 10. be wrapped band, 14.75 steel strand, 15.HDPE sleeve pipe of new pile foundation, 11. protuberant guide posts, 12. affixing steel plates, 13.PVF
The specific embodiment
Below, with reference to the preferred embodiment of accompanying drawing detailed description the utility model.Need to prove before this; Employed term or word can not limited interpretation be common implication or the implication in the dictionary in this manual and claims, and should be based on being interpreted as implication and the notion that meets the utility model technological thought for the principle that can suitably define the notion of term with novel inventor in fact with the best mode explanation.Thereupon; The structure of representing in embodiment that this manual is put down in writing and the accompanying drawing is one of the utility model most preferred embodiment; Can not represent the technological thought of the utility model fully, therefore should be understood that for the utility model, to have various equivalents and the variation that to replace.
A kind ofly be applicable to that striding footpath box girder bridge, continuous rigid frame bridge greatly tiltedly draws system ruggedized construction, former pile foundation 9 both sides are respectively 2 new pile foundations 10 that are used for drill-pouring, and new pile foundation 10 is constructed identical with former pile foundation 9; The top stake directly is 2.4m, and lower diameter is 2.0m, and what be connected with former cushion cap 7 is the new cushion cap 8 that adopts bar planting and ring orientation prestress measure; On the new cushion cap 8 is Sarasota, and the Sarasota bridge floor is high 19 meters with top, and pier place bridge tower adopts prestressed reinforced concrete construction continuously; Body of the tower is provided with vertical prestressing; Just structure pier place bridge tower adopts the ordinary concrete structure, and carriage be to weld box variable cross-section steel joist entirely, the 6 bar planting anchoring steel brackets bottom in former concrete girder bottom surface; And passing through fixedly steel joist of high-strength bolt, suspension cable adopts 1 * 7-15.20-1860 prestressing force steel hinge line.
Joist is for having girder steel or concrete beam.
Joist is affixed with the connected mode of girder or bearing is connected.
The tectonic type of Sarasota has open side type, H type or is applicable to that striding footpath box girder bridge, continuous rigid frame bridge greatly tiltedly draws system ruggedized construction type to adopt concrete towers or head tower form.
The basic connected mode of newly-increased bridge tower and former bridge bridge pier be separate type or with the fixed formula of former bridge pier footing.
Suspension cable is selected 1 * 7-15.20-1860 smooth type epoxy coating strand for use, overcoat HDPE sleeve pipe.
It should be noted that; Although the utility model is described and is illustrated with reference to the specific embodiment; But and do not mean that the utility model is limited to the embodiment of these descriptions; Those skilled in the art can therefrom derive many different variants, and they all will be covered in the true spirit and scope of claim of the present invention.
Claims (6)
1. one kind is applicable to that striding footpath box girder bridge, continuous rigid frame bridge greatly tiltedly draws system ruggedized construction, is characterized in that: former basic both sides respectively increase by 2 new pile foundations that are used for drill-pouring, and new pile foundation is constructed identical with former stake; The top stake directly is 2.4m, and lower diameter is 2.0m, and what be connected with former cushion cap is the new cushion cap that adopts bar planting and ring orientation prestress measure; On the new cushion cap is Sarasota, and the Sarasota bridge floor is high 19 meters with top, and pier place bridge tower adopts prestressed reinforced concrete construction continuously; Body of the tower is provided with vertical prestressing; Just structure pier place bridge tower adopts the ordinary concrete structure, and carriage is full weldering box variable cross-section steel joist, at former concrete girder bottom surface bar planting anchoring steel bracket; And passing through fixedly steel joist of high-strength bolt, suspension cable adopts 1 * 7-15.20-1860 prestressing force steel hinge line.
2. the system ruggedized construction of tiltedly drawing according to claim 1 is characterized in that: joist is for having girder steel or concrete beam.
3. the system ruggedized construction of tiltedly drawing according to claim 1 is characterized in that: joist is affixed with the connected mode of girder or bearing is connected.
4. the system ruggedized construction of tiltedly drawing according to claim 1 is characterized in that: the tectonic type of Sarasota has open side type, H type or is applicable to that striding footpath box girder bridge, continuous rigid frame bridge greatly tiltedly draws system ruggedized construction type, adopts concrete towers or head tower form.
5. the system ruggedized construction of tiltedly drawing according to claim 1 is characterized in that: the basic connected mode of newly-increased bridge tower and former bridge bridge pier be separate type or with the fixed formula of former bridge pier footing.
6. the system ruggedized construction of tiltedly drawing according to claim 1 is characterized in that: suspension cable is selected 1 * 7-15.20-1860 smooth type epoxy coating strand for use, overcoat HDPE sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202703573U CN202202267U (en) | 2011-07-28 | 2011-07-28 | Cable-stayed system reinforcement structure suitable for large-span box girder bridges and continuous rigid frame bridges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202703573U CN202202267U (en) | 2011-07-28 | 2011-07-28 | Cable-stayed system reinforcement structure suitable for large-span box girder bridges and continuous rigid frame bridges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202202267U true CN202202267U (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202703573U Withdrawn - After Issue CN202202267U (en) | 2011-07-28 | 2011-07-28 | Cable-stayed system reinforcement structure suitable for large-span box girder bridges and continuous rigid frame bridges |
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| Country | Link |
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| CN (1) | CN202202267U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286938A (en) * | 2011-07-28 | 2011-12-21 | 交通运输部公路科学研究所 | Diagonal tension system reinforcement structure suitable for large-span box girder bridge and continuous rigid frame bridge |
| CN104562944A (en) * | 2015-01-29 | 2015-04-29 | 山东省交通规划设计院 | Large span composite beam cable-stayed bridge side steel box temporary anchorage system |
| CN104652249A (en) * | 2014-10-14 | 2015-05-27 | 交通运输部公路科学研究所 | Force transmitting device for dragging rope and girder |
| CN105088974A (en) * | 2015-08-14 | 2015-11-25 | 宁波市标新机械科技有限公司 | Solar energy automatic cleaning-maintenance device used for bridge |
-
2011
- 2011-07-28 CN CN2011202703573U patent/CN202202267U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102286938A (en) * | 2011-07-28 | 2011-12-21 | 交通运输部公路科学研究所 | Diagonal tension system reinforcement structure suitable for large-span box girder bridge and continuous rigid frame bridge |
| CN102286938B (en) * | 2011-07-28 | 2014-11-05 | 交通运输部公路科学研究所 | Diagonal tension system reinforcement structure suitable for large-span box girder bridge and continuous rigid frame bridge |
| CN104652249A (en) * | 2014-10-14 | 2015-05-27 | 交通运输部公路科学研究所 | Force transmitting device for dragging rope and girder |
| CN104562944A (en) * | 2015-01-29 | 2015-04-29 | 山东省交通规划设计院 | Large span composite beam cable-stayed bridge side steel box temporary anchorage system |
| CN105088974A (en) * | 2015-08-14 | 2015-11-25 | 宁波市标新机械科技有限公司 | Solar energy automatic cleaning-maintenance device used for bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120425 Effective date of abandoning: 20141105 |
|
| RGAV | Abandon patent right to avoid regrant |