CN104612035A - Hollow slab bridge structure enhancing transverse rigidity - Google Patents
Hollow slab bridge structure enhancing transverse rigidity Download PDFInfo
- Publication number
- CN104612035A CN104612035A CN201510030984.2A CN201510030984A CN104612035A CN 104612035 A CN104612035 A CN 104612035A CN 201510030984 A CN201510030984 A CN 201510030984A CN 104612035 A CN104612035 A CN 104612035A
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- Prior art keywords
- transverse
- bridge
- hollow slab
- hinge joints
- slab bridge
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a hollow slab bridge structure enhancing transverse rigidity, and belongs to the technical field of bridge engineering. According to the technical method, a transverse bridge direction pre-stress rib pipeline is reserved on a bottom plate of each prefabricated plate. Full hinge joints are arranged between the prefabricated plates, and in other words, the height of the hinge joints is equal to that of the prefabricated plates. Meanwhile, the structure of the full hinge joints makes the interval between the bottoms of the prefabricated plates become larger, so that transverse pre-stress ribs are constructed smoothly. In addition, flat anchorage devices are adopted for the transverse pre-stress ribs, and the requirement for the thickness of the bottom plates of the prefabricated plates can be effectively lowered. By the application of the design method, compared with common hinge joints, the resistance to shearing of the hinge joints is better. In cooperation with the transverse pre-stress ribs, transverse linkage of a hollow slab bridge is further enhanced; meanwhile, the transverse pre-stress ribs can effectively balance transverse bending moment.
Description
Technical field
The invention belongs to technical field of bridge engineering, relate 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.
Summary of the invention
The invention provides a kind of new hollow slab bridge structure and construction method thereof, 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.
Technical scheme of the present invention 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 invention 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
The specific embodiment of the present invention 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; 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; Direction across bridge presstressed reinforcing steel adopts flat ground tackle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510030984.2A CN104612035A (en) | 2015-01-21 | 2015-01-21 | Hollow slab bridge structure enhancing transverse rigidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510030984.2A CN104612035A (en) | 2015-01-21 | 2015-01-21 | Hollow slab bridge structure enhancing transverse rigidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104612035A true CN104612035A (en) | 2015-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510030984.2A Pending CN104612035A (en) | 2015-01-21 | 2015-01-21 | Hollow slab bridge structure enhancing transverse rigidity |
Country Status (1)
| Country | Link |
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| CN (1) | CN104612035A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288024A (en) * | 2017-07-25 | 2017-10-24 | 武汉理工大学 | Assembled beam body and its construction method |
Citations (7)
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|---|---|---|---|---|
| KR20030046980A (en) * | 2001-12-07 | 2003-06-18 | 현대건설주식회사 | Rehabilitating method of rahman hinged-joint bridge |
| CN101935983A (en) * | 2010-08-27 | 2011-01-05 | 郑州大学 | Construction method for assembling integral hollow slab bridge |
| CN102587267A (en) * | 2012-04-06 | 2012-07-18 | 浙江大学 | Tension-fabricated bridge with prestressed hollow-plate-girders and middle transverse partitions and construction method of tension-fabricated bridge with prestressed hollow-plate-girder and middle transverse partitions |
| CN202595616U (en) * | 2012-04-13 | 2012-12-12 | 长沙理工大学 | Concrete bridge with durable hinge joint device |
| CN203007856U (en) * | 2013-01-10 | 2013-06-19 | 江祥林 | External prestressing reinforcement system for hollow slab girder bridge |
| CN104233942A (en) * | 2014-09-28 | 2014-12-24 | 浙江大学 | Method for enhancing overall stress on assembled type heterotropic pre-stress hollow slab beam bridge |
| CN204475146U (en) * | 2015-01-21 | 2015-07-15 | 大连理工大学 | A kind of hollow slab bridge structure strengthening lateral stiffness |
-
2015
- 2015-01-21 CN CN201510030984.2A patent/CN104612035A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030046980A (en) * | 2001-12-07 | 2003-06-18 | 현대건설주식회사 | Rehabilitating method of rahman hinged-joint bridge |
| CN101935983A (en) * | 2010-08-27 | 2011-01-05 | 郑州大学 | Construction method for assembling integral hollow slab bridge |
| CN102587267A (en) * | 2012-04-06 | 2012-07-18 | 浙江大学 | Tension-fabricated bridge with prestressed hollow-plate-girders and middle transverse partitions and construction method of tension-fabricated bridge with prestressed hollow-plate-girder and middle transverse partitions |
| CN202595616U (en) * | 2012-04-13 | 2012-12-12 | 长沙理工大学 | Concrete bridge with durable hinge joint device |
| CN203007856U (en) * | 2013-01-10 | 2013-06-19 | 江祥林 | External prestressing reinforcement system for hollow slab girder bridge |
| CN104233942A (en) * | 2014-09-28 | 2014-12-24 | 浙江大学 | Method for enhancing overall stress on assembled type heterotropic pre-stress hollow slab beam bridge |
| CN204475146U (en) * | 2015-01-21 | 2015-07-15 | 大连理工大学 | A kind of hollow slab bridge structure strengthening lateral stiffness |
Non-Patent Citations (2)
| Title |
|---|
| 吴世曾: ""铰缝高度变化对桥面板横向受力性能的影响研究"", 《黑龙江科技信息》, no. 33, 30 November 2012 (2012-11-30), pages 279 * |
| 赵淑敏: ""预应力空心板施加横向预应力设计与施工技术研究"", 《公路交通科技》, no. 9, 30 September 2007 (2007-09-30), pages 126 - 129 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107288024A (en) * | 2017-07-25 | 2017-10-24 | 武汉理工大学 | Assembled beam body and its construction method |
| CN107288024B (en) * | 2017-07-25 | 2020-01-31 | 武汉理工大学 | Assembled beam body and construction method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150513 |
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| WD01 | Invention patent application deemed withdrawn after publication |