CN204475146U - A kind of hollow slab bridge structure strengthening lateral stiffness - Google Patents
A kind of hollow slab bridge structure strengthening lateral stiffness Download PDFInfo
- Publication number
- CN204475146U CN204475146U CN201520041837.0U CN201520041837U CN204475146U CN 204475146 U CN204475146 U CN 204475146U CN 201520041837 U CN201520041837 U CN 201520041837U CN 204475146 U CN204475146 U CN 204475146U
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- China
- Prior art keywords
- hinge seam
- bridge
- seam
- hollow slab
- precast plate
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- Expired - Fee Related
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- 238000005728 strengthening Methods 0.000 title abstract description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims description 3
- 230000002708 enhancing effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract 2
- 238000005452 bending Methods 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 7
- 239000011384 asphalt concrete Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides a kind of hollow slab bridge structure strengthening lateral stiffness, belongs to technical field of bridge engineering.In this technical method, the base plate of every block precast plate reserves direction across bridge presstressed reinforcing steel pipeline.Hinge seam between pre-support plate adopts and completely cuts with scissors seam, and namely hinge seam height is equal with precast plate height.The structure of full hinge seam makes precast plate bottom interval become large simultaneously, makes the construction of transversely prestressed bars smooth.In addition, transversely prestressed bars employing flat ground tackle can effectively reduce the requirement to precast plate base plate thickness.Use this method for designing, the shear behavior of hinge seam is better than general hinge seam; With the use of transversely prestressed bars, the lateral ties of hollow slab bridge are strengthened further; Transversely prestressed bars energy active balance transverse bending moment simultaneously.
Description
Technical field
The utility model belongs to technical field of bridge engineering, relates to a kind of hollow slab bridge structure strengthening lateral stiffness.
Background technology
The many employings of assembly hollow slab bridges design theory " transversely hinge ", namely between adjacent panels connect be considered as hinged, hinge seam a Transfer of Shear, and ignore actual hinge stitch construct be in complicated applied force state that is curved, that draw, cut.The hinge seam of China's assembly hollow slab bridges generally adopts the structure of shallow hinge seam in early days.Facts have proved, the disease of shallow hinge seam structure is serious, easily causes single slab bearing, makes the supporting capacity of whole bridge reduce amount of deflection simultaneously and increases, had a strong impact on the safety of driving and the application life of bridges and culverts.
To the nineties in 20th century, the hinge seam of China's assembly hollow slab bridges gradually adopts the structure of dark hinge seam, this improves the shear behavior of hinge seam to a certain extent, but basic solution cuts with scissors seam damage disease problem, and hinge seam remains the weak part of whole assembly hollow slab bridges.
Utility model content
The utility model provides a kind of new hollow slab bridge structure and construction method thereof, and this structure can promote the shear resistance cutting with scissors seam between hollow slab bridge precast plate, thus strengthens the lateral stiffness of hollow slab bridge, promotes the supporting capacity of bridge.
The technical solution of the utility model is:
Strengthening a hollow slab bridge structure for lateral stiffness, comprising full hinge seam (hinge equal with paying hollowcore slab deck-molding in advance is stitched), direction across bridge presstressed reinforcing steel and flat ground tackle.Direction across bridge presstressed reinforcing steel pipeline is provided with at the base plate of precast plate; Leave hinge seam between adjacent precast plate for completely to cut with scissors seam, the height of full hinge seam is consistent with the deck-molding of precast plate, larger than dark hinge seam.Meanwhile, completely cut with scissors seam and make precast plate bottom interval become large, make the construction of transversely prestressed bars smooth.In addition, direction across bridge presstressed reinforcing steel adopts flat ground tackle, can effectively reduce the requirement to precast plate base plate thickness.
Effect of the present utility model and benefit are: use this hinge to stitch, highly larger than the shearing resistance of general hinge seam, and namely shear resistent area is larger, thus the shear resistance of hinge seam is stronger, and the lateral ties between precast plate are stronger; With the use of the transversely prestressed bars of right quantity, the lateral ties of hollow slab bridge are strengthened further; Meanwhile, transversely prestressed bars makes the horizontal lower edge concrete of hollowcore slab be in pressured state, thus avoids occurring common base plate along bridge to through crack.
Accompanying drawing explanation
Fig. 1 is the hollow slab bridge cross-sectional view adopting asphalt concrete pavement layer.
Fig. 2 is the hollow slab bridge cross-sectional view adopting concrete pavement layer.
In figure: 1 concrete pavement layer; 2 flexible waterproof layers; 3 asphalt concrete pavement layers;
4 completely cut with scissors seam; 5 anchor plates; 6 direction across bridge presstressed reinforcing steels; 7 precast plates; 8 hinge seam reinforcing bars.
Detailed description of the invention
Detailed description of the invention of the present utility model is described in detail below in conjunction with technical scheme and accompanying drawing.
Bridge construction form is 15 meters of Supported Slab Bridge, width 9.8 meters, and Supported Slab Bridge is made up of 8 pieces of precast plates, wherein pays side bar in advance wide 1.2 meters, prefabricated middle deck-siding 1.0 meters.
After having been set up by precast plate, between contiguous prefabricated plate, to be spaced apart at the bottom of back 20 centimetres, beam 20 centimetres.Respectively at span centre and, 3 meters, span centre both sides, reserved totally 3 place's transversely prestressed bars pipelines.Transversely prestressed bars is penetrated reserving hole channel, and fixed end ground tackle is installed.Transversely prestressed bars between precast plate is put bellows.Then lay the template of hinge seam, concreting forms hinge seam, and vibrates.Build 7 cm thick concrete pavement layers again, vibrate, after maintenance completes, above cement concrete layer, flexible waterproof layer is set, (pave-load layer structure also can adopt and arrange flexible waterproof layer at precast plate end face to lay 8 cm thick asphalt concrete pavements, on flexible waterproof layer, lay 15 cm of water cement concrete pave-load layer again, see accompanying drawing 2).Treat that hinge seam concrete reaches some strength stretch-draw transversely prestressed bars again.After stretch-draw, with ground tackle by the anchoring of stretching end presstressed reinforcing steel.Finally, will reserving hole channel be grouted in compression pump, and make prestressed reinforcement and cell walls produce adhesion stress.
Claims (1)
1. strengthen a hollow slab bridge structure for lateral stiffness, it is characterized in that, the hollow slab bridge structure of this enhancing lateral stiffness comprises full hinge seam, direction across bridge presstressed reinforcing steel and flat ground tackle; The base plate of precast plate is provided with direction across bridge presstressed reinforcing steel pipeline; Leave hinge seam between adjacent precast plate for completely to cut with scissors seam, the height of full hinge seam is consistent with the deck-molding of precast plate, larger than dark hinge seam; Direction across bridge presstressed reinforcing steel adopts flat ground tackle.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201520041837.0U CN204475146U (en) | 2015-01-21 | 2015-01-21 | A kind of hollow slab bridge structure strengthening lateral stiffness |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201520041837.0U CN204475146U (en) | 2015-01-21 | 2015-01-21 | A kind of hollow slab bridge structure strengthening lateral stiffness |
Publications (1)
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CN204475146U true CN204475146U (en) | 2015-07-15 |
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CN201520041837.0U Expired - Fee Related CN204475146U (en) | 2015-01-21 | 2015-01-21 | A kind of hollow slab bridge structure strengthening lateral stiffness |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104612035A (en) * | 2015-01-21 | 2015-05-13 | 大连理工大学 | Hollow slab bridge structure enhancing transverse rigidity |
CN108103928A (en) * | 2017-12-21 | 2018-06-01 | 昆山顶牛市政建设有限公司 | A kind of connection structure and construction method of multispan freely-supported bridge expanssion joint |
-
2015
- 2015-01-21 CN CN201520041837.0U patent/CN204475146U/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104612035A (en) * | 2015-01-21 | 2015-05-13 | 大连理工大学 | Hollow slab bridge structure enhancing transverse rigidity |
CN108103928A (en) * | 2017-12-21 | 2018-06-01 | 昆山顶牛市政建设有限公司 | A kind of connection structure and construction method of multispan freely-supported bridge expanssion joint |
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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: 20150715 Termination date: 20180121 |
|
CF01 | Termination of patent right due to non-payment of annual fee |