CN203741713U - Prestressed concrete bridge deck slab - Google Patents
Prestressed concrete bridge deck slab Download PDFInfo
- Publication number
- CN203741713U CN203741713U CN201420137750.9U CN201420137750U CN203741713U CN 203741713 U CN203741713 U CN 203741713U CN 201420137750 U CN201420137750 U CN 201420137750U CN 203741713 U CN203741713 U CN 203741713U
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- concrete bridge
- prestressed concrete
- concrete slab
- bridge panel
- concrete
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Abstract
The utility model discloses a prestressed concrete bridge deck slab. The prestressed concrete bridge deck slab comprises a concrete bridge deck slab body and a prestressing force device used for enabling the concrete bridge deck slab body to generate prestressing force in the longitudinal direction. The prestressing force device comprises two anchoring walls and prestressing ribs, wherein the anchoring walls are arrayed at the two longitudinal ends of the concrete bridge deck slab body respectively, and the prestressing ribs are fixedly connected between the two anchoring walls. The prestressed concrete bridge deck slab is manufactured by plain concrete and the prestressing force device without ordinary steel bars, and it can be ensured that a bridge is simple in structure, large in stress, stable, reliable, fast and convenient to construct and low in manufacturing cost.
Description
Technical field
The utility model relates to concrete slab, specifically a kind of prestressed concrete bridge panel.
Background technology
At present, the vehicles increasing, highway, railway start by ground to aerial development, form day by day various road surface bridge engineering now, but there are a large amount of problems in the concrete bridge structure conventionally adopting now, because concrete exists the very poor shortcoming of resistance to tension, its tensile strength is about 1/18～1/8 of cubic compressive strength, ultimate tensile strength is less than 1/20 of limit compressive strain, and every meter only can be extended 0.10～0.15mm.Therefore, concrete is specially adapted to make compression-member.But pure compression-member is considerably less in engineering, be more curved scissors, bending, curved pressure and other combination stressed members.In these members, both there will be larger compressive stress, also there will be larger tensile stress.If the bridge deck of bridge bridge are only made by concrete, easily destroy, hold and can't stand great load.For overcoming these deficiencies, make concrete slab energy broader applications in engineering, thereby people by adopting prestressed concrete to form Prestressed Concrete Bridges on the bridge deck of Reinforced Concrete Bridge.So-called prestressed concrete, is exactly in concrete or steel concrete, to introduce internal compressive stress artificially, and its numerical value and the armored concrete that just tensile stress of service load generation can be offset to a suitable degree that distributes.Build the bridge floor of bridge with prestressed concrete, have improve bridge floor cracking resistance and rigidity, saving material, reduce deadweight, reduce the vertical shear of bridge floor and principal tensile stress, the advantage such as bridge quality safety is reliable.But in present prestressed concrete bridge panel, still configure a large amount of plain barss, be actually with a kind of prestressed concrete bridge panel with reinforcing bar, this bridge deck are due to a large amount of plain bars of configuration, and cost is higher, construction trouble.
Therefore, for overcoming the above problems, need a kind of plain concrete and prestressing apparatus only used to make, do not need to arrange plain bars, can guarantee bridge construction simple, stressed large, solid and reliable and construct quick, convenient and the low prestressed concrete bridge panel of cost.
Utility model content
In view of this, the purpose of this utility model is to overcome defect of the prior art, provide a kind of plain concrete and prestressing apparatus only used to make, do not need to arrange plain bars, can guarantee bridge construction simple, stressed large, solid and reliable and construct quick, convenient and the low prestressed concrete bridge panel of cost.Prestressed concrete bridge panel of the present utility model, comprise concrete slab and for making concrete slab longitudinally produce the prestressing apparatus of precompression along it, prestressing apparatus comprises and is respectively in two anchoring walls at the longitudinal two ends of described concrete slab and is fixedly connected on the presstressed reinforcing steel between two anchoring walls;
Further, described prestressing apparatus also comprises the hollow section that longitudinally connects concrete slab, and presstressed reinforcing steel runs through concrete slab by this hollow section;
Further, described presstressed reinforcing steel and hollow section laterally evenly arrange multiple along concrete slab;
Further, described hollow section is corrugated steel tube or rubber tube;
Further, described presstressed reinforcing steel is steel strand or reinforcing bar;
Further, described prestressing apparatus also comprises the pre-stressed steel plate being fixedly connected between two anchoring walls;
Further, described pre-stressed steel plate is galvanized steel plain sheet;
Further, described pre-stressed steel plate is covered in concrete slab bottom surface and side;
The beneficial effects of the utility model are: prestressed concrete bridge panel of the present utility model, only make of plain concrete and prestressing apparatus, can avoid adopting reinforced concrete structure bridge deck to cause bridge deadweight excessive, the shortcoming that cost is higher, can solve again the shortcoming that employing plain concrete construction bridge deck cause bridge tensile strength deficiency, destruction very easily occurs, ensure that bridge construction is simple simultaneously, stressed larger, solid and reliable and construction period is shorter.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Fig. 1 is structural representation of the present utility model.As shown in the figure, the Prestressed Concrete Bridges of the present embodiment, comprise concrete slab 2 and for making concrete slab 2 longitudinally produce the prestressing apparatus of precompression along it, prestressing apparatus comprises and is respectively in two anchoring walls 1 at described concrete slab 2 longitudinal two ends and is fixedly connected on the presstressed reinforcing steel 3 between two anchoring walls 1.
In the present embodiment, described prestressing apparatus also comprises the hollow section 4 that longitudinally connects concrete slab 2, and presstressed reinforcing steel 3 runs through concrete slab 2 by this hollow section 4; This hollow section 4 is Prefabricated hollow pipe 4, has therefore reduced the working procedure of concrete slab 2 demouldings, has accelerated construction progress.In addition, hollow section 4 is set and can effectively alleviates pontic weight, reduce concrete consumption, and hollow section 4 itself has certain intensity, can effectively improve intensity and the bearing capacity of pontic entirety.
In the present embodiment, described presstressed reinforcing steel 3 and hollow section 4 laterally evenly arrange multiple along concrete slab 2, many presstressed reinforcing steel 3 is fixedly connected with two anchoring walls 1, not only can avoid single presstressed reinforcing steel 3 that fracture occurs causes bridge prestress failure of apparatus to cause bridge collapse, ensure that anchoring wall 1 is stressed evenly simultaneously, improved the reliability that presstressed reinforcing steel 3 is connected with anchoring wall 1.
In the present embodiment, described hollow section 4 is corrugated steel tube or rubber tube, and bellows refers to the tubulose elastic sensing element connecting into along folding retractable direction with collapsible wrinkle sheet, and bellows and rubber tube all have higher elasticity along its length.Because concrete slab 2 is under the extruding of prestressing apparatus, it can produce certain decrement at length direction.In addition, because concrete slab 2 is under different environment temperatures, owing to expanding with heat and contract with cold, also can there is dilatation in its length direction, therefore adopt bellows or rubber tube as hollow section 4, can adapt to preferably concrete slab 2 and occur flexiblely along self length direction, avoid the damage of hollow section 4.
In the present embodiment, described presstressed reinforcing steel 3 is steel strand or reinforcing bar, and prestress wire is the stranded steel cable being made up of 2,3,7 or 19 high-tensile steel wires, and through the processing (stabilization processes) that eliminates stress, be suitable for prestressed concrete, there is intensity height and the good feature of relaxation property.And adopt plain bars as presstressed reinforcing steel 3, can effectively reduce construction cost.Simultaneously, because in use vibrating, prestressed concrete bridge panel cause concrete slab 2 longitudinally to occur the stroke of certain distance along it, and this stroke can cause presstressed reinforcing steel 3 to rupture because tensile stress is excessive, or too small causing of tensile stress reduces longitudinal compressive stress of concrete slab 2, therefore, for avoiding the generation of above phenomenon, presstressed reinforcing steel 3 can adopt multistage steel strand or reinforcing bar to be connected in sequence by elastic device, and the present embodiment Elastic device can be the spring of existing arbitrary form.
In the present embodiment, described prestressing apparatus also comprises the pre-stressed steel plate 5 being fixedly connected between two anchoring walls 1, this pre-stressed steel plate 5 coordinates with presstressed reinforcing steel 3 and concrete slab 2 is longitudinally produced to squeezing effect along it simultaneously, thereby promote the integrally-built intensity of bridge, rigidity, bending resistance, shearing resistance and fatigue resistance, thereby extend the application life of pontic, improve the durability of pontic.
In the present embodiment, described pre-stressed steel plate 5 is galvanized steel plain sheet, because bridge is subject to the erosion of river for a long time, if adopt general steel plate as pre-stressed steel plate 5, after long-term use can there is serious corrosion and easily break in steel plate, cause pre-stressed steel plate 5 to lose efficacy, and galvanized steel plain sheet have good corrosion resistance, japanning property, ornamental and good formability, can effectively avoid pre-stressed steel plate 5 that corrosion and destruction occurs.
In the present embodiment, described pre-stressed steel plate 5 is covered in concrete slab 2 bottom surfaces and side, this pre-stressed steel plate 5 that is covered in concrete slab 2 bottom surfaces and side also avoids concrete slab 2 to be subject to the destructions such as direct shock, the safety that effectively improves bridge in providing longitudinal precompression effect to concrete slab 2.In the present embodiment, pre-stressed steel plate 5 can be the U-shaped steel plate of integral type that is covered in concrete slab 2 bottom surfaces, or adopts three block pre-stressed steel plates 5 to be covered in respectively concrete slab 2 bottom surfaces and two sides.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (8)
1. a prestressed concrete bridge panel, is characterized in that: comprise concrete slab and for making concrete slab longitudinally produce the prestressing apparatus of precompression along it; Described prestressing apparatus comprises and is respectively in two anchoring walls at the longitudinal two ends of described concrete slab and is fixedly connected on the presstressed reinforcing steel between two anchoring walls.
2. prestressed concrete bridge panel according to claim 1, is characterized in that: described prestressing apparatus also comprises the hollow section that longitudinally connects concrete slab; Described presstressed reinforcing steel runs through concrete slab by this hollow section.
3. prestressed concrete bridge panel according to claim 2, is characterized in that: described presstressed reinforcing steel and hollow section laterally evenly arrange multiple along concrete slab.
4. prestressed concrete bridge panel according to claim 3, is characterized in that: described hollow section is corrugated steel tube or rubber tube.
5. prestressed concrete bridge panel according to claim 4, is characterized in that: described presstressed reinforcing steel is steel strand or reinforcing bar.
6. prestressed concrete bridge panel according to claim 5, is characterized in that: described prestressing apparatus also comprises the pre-stressed steel plate being fixedly connected between two anchoring walls.
7. prestressed concrete bridge panel according to claim 6, is characterized in that: described pre-stressed steel plate is galvanized steel plain sheet.
8. prestressed concrete bridge panel according to claim 7, is characterized in that: described pre-stressed steel plate is covered in concrete slab bottom surface and side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420137750.9U CN203741713U (en) | 2014-03-25 | 2014-03-25 | Prestressed concrete bridge deck slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420137750.9U CN203741713U (en) | 2014-03-25 | 2014-03-25 | Prestressed concrete bridge deck slab |
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| Publication Number | Publication Date |
|---|---|
| CN203741713U true CN203741713U (en) | 2014-07-30 |
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| CN201420137750.9U Expired - Fee Related CN203741713U (en) | 2014-03-25 | 2014-03-25 | Prestressed concrete bridge deck slab |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589525A (en) * | 2018-04-23 | 2018-09-28 | 宁波大学 | Two dimension prestressing bridge floor continuation apparatus and its method for prefabricating and lateral ties method |
| CN108708232A (en) * | 2018-07-19 | 2018-10-26 | 华东交通大学 | A kind of combined orbit vibration-proof structure |
| CN108708279A (en) * | 2018-07-19 | 2018-10-26 | 华东交通大学 | A kind of novel damping deck structrue |
| CN109208405A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Pre-track beam and straddle type rail transit system for straddle-type rail vehicle |
| CN109208456A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Pre-track beam and straddle type rail transit system for straddle-type rail vehicle |
| CN110027109A (en) * | 2019-04-28 | 2019-07-19 | 哈尔滨工业大学 | A method of avoiding UHPC structural elements shrinkage cracking in knot hard process |
| CN110983968A (en) * | 2019-12-30 | 2020-04-10 | 扬州大学 | Prefabricated assembled FRP (fiber reinforced plastic) -section steel-concrete combined bridge deck and construction method thereof |
-
2014
- 2014-03-25 CN CN201420137750.9U patent/CN203741713U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109208405A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Pre-track beam and straddle type rail transit system for straddle-type rail vehicle |
| CN109208456A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Pre-track beam and straddle type rail transit system for straddle-type rail vehicle |
| CN109208456B (en) * | 2017-06-30 | 2020-07-10 | 比亚迪股份有限公司 | Prefabricated track beam for straddle type rail vehicle and straddle type rail transit system |
| CN108589525A (en) * | 2018-04-23 | 2018-09-28 | 宁波大学 | Two dimension prestressing bridge floor continuation apparatus and its method for prefabricating and lateral ties method |
| CN108708232A (en) * | 2018-07-19 | 2018-10-26 | 华东交通大学 | A kind of combined orbit vibration-proof structure |
| CN108708279A (en) * | 2018-07-19 | 2018-10-26 | 华东交通大学 | A kind of novel damping deck structrue |
| CN110027109A (en) * | 2019-04-28 | 2019-07-19 | 哈尔滨工业大学 | A method of avoiding UHPC structural elements shrinkage cracking in knot hard process |
| CN110983968A (en) * | 2019-12-30 | 2020-04-10 | 扬州大学 | Prefabricated assembled FRP (fiber reinforced plastic) -section steel-concrete combined bridge deck and construction method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20180325 |
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| CF01 | Termination of patent right due to non-payment of annual fee |