CN204475146U - A kind of hollow slab bridge structure strengthening lateral stiffness - Google Patents

A kind of hollow slab bridge structure strengthening lateral stiffness Download PDF

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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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CN201520041837.0U
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Chinese (zh)
Inventor
潘盛山
王骞
曾强
张哲�
耿铁锁
谭岩斌
邱文亮
黄才良
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Dalian University of Technology
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Dalian University of Technology
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Priority to CN201520041837.0U priority Critical patent/CN204475146U/en
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Publication of CN204475146U publication Critical patent/CN204475146U/en
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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

A kind of hollow slab bridge structure strengthening lateral stiffness
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.
CN201520041837.0U 2015-01-21 2015-01-21 A kind of hollow slab bridge structure strengthening lateral stiffness Expired - Fee Related CN204475146U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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
CN201520041837.0U CN204475146U (en) 2015-01-21 2015-01-21 A kind of hollow slab bridge structure strengthening lateral stiffness

Publications (1)

Publication Number Publication Date
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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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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