CN201778276U - Integrally assembled hollow slab bridge - Google Patents
Integrally assembled hollow slab bridge Download PDFInfo
- Publication number
- CN201778276U CN201778276U CN2010205077007U CN201020507700U CN201778276U CN 201778276 U CN201778276 U CN 201778276U CN 2010205077007 U CN2010205077007 U CN 2010205077007U CN 201020507700 U CN201020507700 U CN 201020507700U CN 201778276 U CN201778276 U CN 201778276U
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- CN
- China
- Prior art keywords
- hollow slab
- transverse
- transverse prestress
- bridge
- duct
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- Expired - Fee Related
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Abstract
The utility model discloses an integrally assembled hollow slab bridge which comprises prefabricated hollow slabs and side linear edges of the prefabricated hollow slabs. Three diaphragm plates are respectively arranged at the two ends and the midspan of each prefabricated hollow slab, a cavity structure is arranged between every two diaphragm plates, a transverse prestressing duct is arranged inside each diaphragm plate, the transverse prestressing ducts of adjacent prefabricated hollow slabs are in one-to-one correspondence, a prestressing tensioner penetrates through each transverse prestressing duct, and the two ends of each prestressing tensioner are anchored at the outer sides of two side slabs through a tension anchorage device. The integrally assembled hollow slab bridge has simple structure and is convenient for construction; and by the utility model, the integrity of the hollow slab bridge along the transverse direction of the bridge is improved.
Description
Technical field
The utility model relates to a kind of assembled integral hollow slab bridge.
Background technology
At present, single span is striden footpath medium and small in the following scope of 20m and is striden the form of structure that the footpath highway bridge adopts prestressed concrete or steel concrete assembling hollow slab bridge usually.The hollowcore slab of such bridge is constructed in precast yard, and cross section is generally single hole or diplopore section form, adopts pre-tensioning system along plate prestressed reinforcement to be set vertically, and the hollowcore slab side is a broken line shape, and reserves the ribbet reinforcing bar.Its construction method is at first with prefabricated hollowcore slab hoisted in position, and the ribbet position concreting between the adjacent vacant core laterally is connected to become integral body with each piece hollowcore slab along bridge by ribbet reinforcing bar and concrete then.Owing to only depend on the ribbet reinforcing bar to be connected between the adjacent vacant core with concrete, Transfer of Shear limited in one's ability, poor along the bridge transverse integral, be prone to the ribbet position along bridge crack longitudinally, cause vehicle pitching, thereby influence the normal use and the durability of bridge, when situation is serious, it is stressed veneer to occur, hides some dangers for to the current safety of bridge.
The utility model content
The utility model purpose is to provide a kind of assembled integral hollow slab bridge, improves hollowcore slab along the horizontal globality of bridge.
To achieve these goals, the utility model adopts following technical scheme: a kind of assembled integral hollow slab bridge, comprise precast hollow slab, the side straight line of precast hollow slab, position, both ends and span centre position at precast hollow slab are provided with three road diaphragms, be cavity structure between the diaphragm, the transverse prestress duct be set in diaphragm inside; The transverse prestress duct of contiguous prefabricated hollowcore slab is corresponding one by one; Be equipped with the prestressing force take-up device in the transverse prestress duct, the two ends of prestressing force take-up device are anchored at the two side plates outside by stretch-draw end ground tackle.
Described prestressing force take-up device is to be equipped with transverse prestressed reinforcing steel bar in the transverse prestress duct, is provided with the pressure injection cement paste between transverse prestressed reinforcing steel bar and the transverse prestress duct.
Described prestressing force take-up device is to be equipped with band sheath prestressed cable in the transverse prestress duct.
Described transverse prestress duct forms by built-in metal bellows, conduit peschel or plastic film capicitor.
The plate side of precast hollow slab of the present utility model is prefabricated into linear, promptly need not reserve the ribbet interface at the plate side, after treating each piece hollowcore slab hoisted in position of full-bridge, laterally apply transverse prestress along bridge at the reserving hole channel place of three road diaphragms, the transverse prestress that applies by post stretching produces normal pressure between adjacent vacant core side plate, rely on the frictional force Transfer of Shear between the hollowcore slab side plate contact surface, replace the ribbet in traditional construction method, thereby improve hollowcore slab along the horizontal globality of bridge.
The utility model relies on the frictional force Transfer of Shear between the side plate contact surface, has improved hollow slab bridge along the horizontal globality of bridge.The size of frictional force is relevant with the normal pressure size between the hollowcore slab side plate, promptly the size with the transverse prestress that is applied is relevant, can apply degree by the difference of transverse prestress, satisfy that different bridges are wide, the different shearing resistance requirements of the hollow slab bridge of span, it is single to have solved traditional structure hollow core ribbet shear resistance, can not be designed to the shortcoming of different value with the wide variation of bridge.By in the hollowcore slab end and span centre diaphragm is set and applies transverse prestress, homogenizing load cross direction profiles, the power performance of raising hollow slab bridge under the vehicular load effect are all played advantageous effect, particularly when the bridge broad, benefit of the present utility model will be more remarkable.Simplified the prefabricated and construction technology of traditional handicraft hollow core, the hollowcore slab side does not need to be prefabricated into complicated broken line border, does not need to reserve the ribbet reinforcing bar yet.Do not need to build the ribbet concrete behind the hollowcore slab hoisted in position between the adjacent vacant core yet.Hollowcore slab applies technology maturation, the easy construction of transverse prestress in the body, and pre-buried pipeline and end anchorage are approved product, purchases conveniently.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the I-I sectional view of Fig. 1;
Fig. 3 is the II-II sectional view of Fig. 1;
Fig. 4 is the III-III sectional view of Fig. 1.
The specific embodiment
Embodiment: shown in Fig. 1-4, a kind of assembled integral hollow slab bridge, the specific embodiment is the single span hollow slab bridge that 6 single hole hollowcore slabs are formed, comprise precast hollow slab 1, the side straight line of precast hollow slab 1 is provided with three road diaphragms 2 in the position, both ends and the span centre position of precast hollow slab 1, is cavity structure between the diaphragm 2, in diaphragm 2 inside transverse prestress duct 3 is set, transverse prestress duct 3 forms by built-in metal bellows, conduit peschel or plastic film capicitor.The transverse prestress duct 3 of contiguous prefabricated hollowcore slab 1 is corresponding one by one; Be equipped with prestressing force take-up device 4 in the transverse prestress duct 3, the two ends of prestressing force take-up device 4 are anchored at the two side plates outside by stretch-draw end ground tackle 5.
Prestressing force take-up device 4 can be provided with the pressure injection cement paste between transverse prestressed reinforcing steel bar and the transverse prestress duct for being equipped with transverse prestressed reinforcing steel bar in the transverse prestress duct.
Prestressing force take-up device 4 also can when adopting band sheath prestressed cable, need not to carry out slip casting for being equipped with band sheath prestressed cable in the transverse prestress duct.
Claims (4)
1. assembled integral hollow slab bridge, it is characterized in that: comprise precast hollow slab, the side straight line of precast hollow slab is provided with three road diaphragms in the position, both ends and the span centre position of precast hollow slab, be cavity structure between the diaphragm, the transverse prestress duct be set in diaphragm inside; The transverse prestress duct of contiguous prefabricated hollowcore slab is corresponding one by one; Be equipped with the prestressing force take-up device in the transverse prestress duct, the two ends of prestressing force take-up device are anchored at the two side plates outside by stretch-draw end ground tackle.
2. assembled integral hollow slab bridge according to claim 1, it is characterized in that: described prestressing force take-up device is to be equipped with transverse prestressed reinforcing steel bar in the transverse prestress duct, is provided with the pressure injection cement paste between transverse prestressed reinforcing steel bar and the transverse prestress duct.
3. assembled integral hollow slab bridge according to claim 1 is characterized in that: described prestressing force take-up device is to be equipped with band sheath prestressed cable in the transverse prestress duct.
4. according to arbitrary described assembled integral hollow slab bridge of claim 1～3, it is characterized in that: described transverse prestress duct forms by built-in metal bellows, conduit peschel or plastic film capicitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205077007U CN201778276U (en) | 2010-08-27 | 2010-08-27 | Integrally assembled hollow slab bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205077007U CN201778276U (en) | 2010-08-27 | 2010-08-27 | Integrally assembled hollow slab bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201778276U true CN201778276U (en) | 2011-03-30 |
Family
ID=43791491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205077007U Expired - Fee Related CN201778276U (en) | 2010-08-27 | 2010-08-27 | Integrally assembled hollow slab bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201778276U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741583A (en) * | 2013-12-31 | 2014-04-23 | 郑州大学 | Precast box girder transverse prestress stranded wire mounting structure of plate girder bridge |
| CN104891889A (en) * | 2015-04-17 | 2015-09-09 | 黄贺明 | Assembly-type pre-stress hollow deck slab and preparation method thereof |
| CN109881573A (en) * | 2019-04-01 | 2019-06-14 | 西南交通大学 | A kind of assembly hollow slab bridges construction |
-
2010
- 2010-08-27 CN CN2010205077007U patent/CN201778276U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741583A (en) * | 2013-12-31 | 2014-04-23 | 郑州大学 | Precast box girder transverse prestress stranded wire mounting structure of plate girder bridge |
| CN103741583B (en) * | 2013-12-31 | 2016-05-18 | 郑州大学 | The prefabricated case beam transverse prestress twisted wire mounting structure of plate girder bridge |
| CN104891889A (en) * | 2015-04-17 | 2015-09-09 | 黄贺明 | Assembly-type pre-stress hollow deck slab and preparation method thereof |
| CN104891889B (en) * | 2015-04-17 | 2017-07-04 | 黄贺明 | A kind of prefabricated PC hollow bridge deck and preparation method thereof |
| CN109881573A (en) * | 2019-04-01 | 2019-06-14 | 西南交通大学 | A kind of assembly hollow slab bridges construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20120827 |