CN204608587U - A kind of slab bridge - Google Patents
A kind of slab bridge Download PDFInfo
- Publication number
- CN204608587U CN204608587U CN201520167270.1U CN201520167270U CN204608587U CN 204608587 U CN204608587 U CN 204608587U CN 201520167270 U CN201520167270 U CN 201520167270U CN 204608587 U CN204608587 U CN 204608587U
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- Prior art keywords
- slab
- bridge
- plate
- dowel
- inverted
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Abstract
The utility model discloses a kind of slab bridge, assembled by prefabricated low clearance inverted T shaped plate, belong to bridge engineering field.This Precast inverted "T" slab comprises the solid slab part in the middle part of cross section, and the edge of a wing that bottom is stretched out to both sides, and the upper surface on plate side and the edge of a wing has outwardly directed dowel.After on-site consolidation, above T-shaped plate, concreting forms slab bridge.The Precast inverted "T" slab lifting weight of this bridge is little, and Cheng Qiaohou good integrity, is applicable to the bridge of 16 meters and following span.Be particularly suitable for needing rapid construction, or the occasion needing cross-line to construct.The bridge construction of the type can reduce the interruption of communication time, improves the connection reliability between prefabricated units, and the hinge avoiding hollow slab bridge common seam cracking disease, reduces life cycle cost.
Description
Technical field
The utility model relates to a kind of slab bridge, belongs to bridge engineering field.
Background technology
Be less than in the little span scope of 20 meters in span, bridge pattern is in the majority with hollow slab bridge.Mainly hollow slab bridge adopts the construction of precast assembly method, and the prefabricated quality of hollowcore slab is guaranteed, and assembling construction speed is both economical.But, along with the increase of vehicle flowrate on road, and the increasing of overloaded vehicle, damage can be caused to the hinge seam of hollow slab bridge.Generally take the form of hinge seam bottom first to ftracture, weaken the connection between hollowcore slab, hinge seam concrete is damaged.Rainwater infiltrates hinge seam inside from bridge floor, exacerbates the corrosion of reinforcing bar and concrete deterioration further, and hinge seam force transfer capacity reduces, and each plate is worked in coordination with supporting capacity and weakened.The part that effect wheel load onboard transmits to adjacent plate reduces gradually, and the load combination ratio that wheel place plate is born increases gradually, and this phenomenon is commonly referred to as " single slab bearing ".Under the effect of overloaded vehicle, the breakage of hinge seam increases the weight of, and hollowcore slab bears most of wheel load, and when acquiring a certain degree, hollowcore slab can rupture, and causes the accident that vehicle falls down from the bridge in company with hollowcore slab.
Cast in place concrete plate can avoid the disease of hollow slab bridge, has very long use history, but builds needs a large amount of time and manpower, because need model sheetinstallat and dismounting, the work such as maintenance.This construction method sets up support because of needs on road, greatly can affect traffic.The very long construction period has brought the inconvenience of trip, adds travel time and oil consumption, adds social cost.Therefore, in the urgent need to a kind of new slab bridge, strengthen the transverse integral of slab bridge, avoid " single slab bearing ", do not lose again the advantage that hollow slab bridge is easy to build simultaneously.
Utility model content
The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art and problem, provide a kind of novel slab bridge, its top force structure is by Precast inverted "T" slab side by side, and the concrete of building above plate is formed, to it is characterized in that in the middle part of Precast inverted "T" slab cross section that part protruding upward is solid and width is not less than the wide half of plate, there is the dowel stretched out in plate body on each surface that plate contacts with cast-in-situ concrete, the dowel of projection side is positioned at this side lower and stretches out the half that length that panel edges enters adjacent plate is not less than edge of a wing extension.Whole bridge superstructure schematic cross-sectional view as shown in Figure 1, after Precast inverted "T" slab (1) is assembled, then builds top and the seam cast-in-situ concrete (7) of plate, forms the force structure in superstructure.The middle part of the cross section epirelief of this Precast inverted "T" slab (1) is solid, and width is not less than the half of Precast inverted "T" slab (1) width.The dowel (3) that plate side lower stretches out stretches out place plate, and extension is not less than the half of the edge of a wing (2) length, and this can strengthen the connection between adjacent panels.The dowel (4) that plate top is stretched out can strengthen the bonding between poured in place concrete and Precast inverted "T" slab (1), strengthens holistic resistant behavior.The dowel (5) that the edge of a wing is stretched out can postpone or avoid along New-old concrete joint surface cracking herein.
For strengthening the intensity of New-old concrete joint surface further, Precast inverted "T" slab (1) surface protruding upward can arrange the dowel (6) that plate side surface upper part is stretched out.For guaranteeing the reliability of dowel work, dowel end, side can arrange 90 degree of bendings.
For increasing the span that this slab bridge pattern adapts to, inverted T shaped plate (1) can join longitudinal prestressing muscle in bottom, and adopts pre-tensioning system prefabricated.
For accelerating speed of application further, can reduce on-the-spot reinforcing bar binding operation, be reinforcing cage by the in-site installation reinforcement fabrication in longitudinal joint between adjacent panels, directly putting into positioning instant after being transported to scene can as far as possible.
Aging along with bridge, in the urgent need to carrying out quick-replaceable to little span bridge in the past.The slab bridge of this pattern can meet the requirement of repairing fast.Therefore, this Modular Bridge System, can be used for newly building bridge, also can be used for the replacing of exist curves, and being reasonably suitable for span is 16 meters and following scope.
Compared with prior art, a kind of slab bridge of the present utility model has following beneficial effect:
1. this pattern slab bridge improves the connection between prefabricated units, enhances the transverse integral of bridge;
2. lighter in weight, can application property good, bridge location site operation speed is fast, saves the time, reduces interruption of communication;
3. improve the safety of works area, and decrease the impact on environment;
4. adopt prefabricated units, poured in place concrete does not need template, is convenient to quality control;
5. avoid the hinge seam problem of hollow slab bridge, reduce the maintenance cost between the operating period, can life cycle cost be reduced.
Accompanying drawing explanation
Fig. 1 whole bridge superstructure schematic cross-sectional view of the present utility model.
Inverted T shaped plate schematic cross-sectional view in Fig. 2 the utility model.
Fig. 3 plate-girder cloth of the present utility model muscle schematic diagram.
Plate-girder cloth muscle schematic diagram in Fig. 4 embodiment one.
Inverted T shaped plate schematic cross-sectional view in Fig. 5 embodiment two.
Plate-girder cloth muscle schematic diagram in Fig. 6 embodiment two.
Plate-girder cloth muscle schematic diagram in Fig. 7 embodiment three.
Plate-girder in Fig. 8 embodiment three No. 9 reinforcing bar schematic diagrames.
Closed stirrup schematic diagram in Fig. 9 embodiment four between plate in longitudinal seam.
Wherein: 1-Precast inverted "T" slab, 2-edge of a wing, the dowel that 3-plate side lower stretches out, the dowel that 4-plate top is stretched out, the dowel that 5-edge of a wing is stretched out, the dowel that 6-plate side surface upper part is stretched out, the top of 7-plate and seam cast-in-situ concrete, 8-anti-collision wall, the u tie muscle of 9-two limb Length discrepancy, 10-plate inner sealing stirrup, 11-in-situ layer top cross muscle, 12-bridge floor, 13-connecting sewing inner sealing stirrup.
Detailed description of the invention
Be below specific embodiment of the utility model, and by reference to the accompanying drawings the technical solution of the utility model be described, but the utility model is not limited to these embodiments.
Embodiment one
This slab bridge adopts the Precast inverted "T" slab (1) shown in Fig. 2, and the width of precast plate is 99cm, edge of a wing thickness 7.5cm, and Fig. 4 is shown in by its plate-girder cloth muscle schematic diagram.The middle part of the cross section epirelief of this Precast inverted "T" slab (1) is solid, the dowel (3) that plate side lower stretches out stretches out place plate, extension is not less than the half of the edge of a wing (2) direction across bridge length, for the connection strengthened further and between adjacent panels, in end increase by 90 degree of bendings upwards of the dowel (3) that plate side lower stretches out.Dowel (5) 90 degree of bendings in plate in the cross section of its place plate that the edge of a wing is stretched out, to postpone or to avoid along New-old concrete joint surface cracking herein.The dowel (4) that plate top is stretched out can strengthen the bonding between poured in place concrete and Precast inverted "T" slab (1), strengthens holistic resistant behavior.Time assembled, adjacent panels longitudinal center distance between centers of tracks is decided to be 1m, after assembled, colligation longitudinal reinforcement in the cannelure that the upper convex portion of adjacent panels divides formation, stirrup spacing gets 25cm, build top and the seam cast-in-situ concrete (7) of plate, the end face of cast-in-situ concrete directly as bridge floor, constructing anti-collision wall (8), get final product open to traffic after maintenance, come into operation.
Embodiment two
This embodiment is the correction to embodiment one.As shown in Figure 5, add the dowel (6) that plate side surface upper part is stretched out, object is the intensity strengthening New-old concrete joint surface further to its Precast inverted "T" slab (1) schematic cross-sectional view.Fig. 6 is shown in by corresponding plate-girder cloth muscle schematic diagram, for ease of the colligation of reinforcing bar, and the transverse strength of reinforcement plate, adopt plate inner sealing stirrup (10) in plate.In addition, behind the top of Bars In Poured Concrete Slab and seam cast-in-situ concrete (7), brushing water-repellent paint, asphalt concrete pavement of then mating formation.
Embodiment three
The present embodiment is the correction to embodiment two.For guaranteeing the reliability of dowel work, dowel (3) end that plate side lower stretches out arranges 90 degree of bendings upwards, plate-girder cloth muscle schematic diagram as shown in Figure 7.For increasing bridge span, the bottom of Precast inverted "T" slab (1) adopts presstressed reinforcing steel, adopts the u tie muscle (9) of two two limb Length discrepancy to be closed by plate mid portion steel strand.Fig. 8 is shown in by plate-girder No. 9 reinforcing bar schematic diagrames.This Precast inverted "T" slab (1) adopts pre-tensioning system prefabricated.For reducing on-the-spot reinforcing bar binding operation, be reinforcing cage by the in-site installation reinforcement fabrication in longitudinal joint between adjacent panels, directly putting into positioning instant after being transported to scene can.Fig. 9 is shown in by closed stirrup schematic diagram between plate in longitudinal seam.
Claims (4)
1. a slab bridge, its top force structure is by Precast inverted "T" slab side by side, and the concrete of building above plate is formed, to it is characterized in that in the middle part of Precast inverted "T" slab cross section that part protruding upward is solid and width is not less than the wide half of plate, there is the dowel stretched out in plate body on each surface that plate contacts with cast-in-situ concrete, and the dowel of projection side is positioned at this side lower and stretches out the half that length that panel edges enters adjacent plate is not less than edge of a wing extension.
2. slab bridge according to claim 1, is characterized in that also there is dowel on the top of Precast inverted "T" slab surface protruding upward.
3. slab bridge according to claim 1, is characterized in that there are 90 degree of bendings upwards dowel end, side, in order to increase switching performance.
4. slab bridge according to claim 1, it is characterized in that Precast inverted "T" slab adopts pre-tensioning system shaping, bottom is furnished with longitudinal prestressing muscle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520167270.1U CN204608587U (en) | 2015-03-24 | 2015-03-24 | A kind of slab bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520167270.1U CN204608587U (en) | 2015-03-24 | 2015-03-24 | A kind of slab bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204608587U true CN204608587U (en) | 2015-09-02 |
Family
ID=53961148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520167270.1U Expired - Fee Related CN204608587U (en) | 2015-03-24 | 2015-03-24 | A kind of slab bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204608587U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149538A (en) * | 2015-03-24 | 2016-11-23 | 郑州大学 | A kind of slab bridge |
-
2015
- 2015-03-24 CN CN201520167270.1U patent/CN204608587U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106149538A (en) * | 2015-03-24 | 2016-11-23 | 郑州大学 | A kind of slab 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 |
Granted publication date: 20150902 Termination date: 20200324 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |