CN208917655U - A kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel - Google Patents
A kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel Download PDFInfo
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- CN208917655U CN208917655U CN201820942862.XU CN201820942862U CN208917655U CN 208917655 U CN208917655 U CN 208917655U CN 201820942862 U CN201820942862 U CN 201820942862U CN 208917655 U CN208917655 U CN 208917655U
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- Prior art keywords
- girder
- prestressed concrete
- connected panel
- pier
- prefabricated
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- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 21
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 239000000565 sealant Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000002512 chemotherapy Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000004567 concrete Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000036244 malformation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a kind of Railway Prestressed Concrete continuous bridges of precast segment pin-connected panel, including two sides abutment pier and positioned at the middle pier at middle part, girder is provided on the abutment pier, middle pier, the girder is the prestressed concrete box girder for directly bearing train load along bridge is indulged to several prefabricated subsections, the girder is divided into.The girder prefabricated subsection can be carried out simultaneously with substructure, and assembled speed is fast, and the construction period is short.The girder prefabricated subsection is prefabricated in the factory, and construction quality is guaranteed.The jowar such as the utility model use, or increase and get higher contour segment length in girder span, reduction gets higher segment quantity, is conducive to segmental precast erection method construction, and handsome in appearance.The utility model reduces the later period and creeps, and realizes mechanization, standardized construction, and work progress is also more environmentally-friendly.
Description
Technical field
The utility model belongs to bridge structure building field, and in particular to a kind of railway prestressing force of precast segment pin-connected panel
Concrete continuous girder bridge.
Background technique
The prestressed concrete continuous beam constructed using Hanging Basket cantilever construction or support cast-in-place, the construction period is longer, construction
Quality is less susceptible to guarantee, the later period creeps greatly, and has greater environmental impacts.Generally get higher contour section of the span centre of continuous beam compared with
Short, most of segment is to get higher section, is unfavorable for segmental precast erection method construction.
Summary of the invention
The utility model proposes in order to solve the problems existing in the prior art, assembled the purpose is to provide a kind of precast segment
The Railway Prestressed Concrete continuous bridge of formula.
The technical solution of the utility model is: a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel,
Girder is provided with including two sides abutment pier and on the middle pier at middle part, the abutment pier, middle pier, the girder is several to being divided into along bridge
A prefabricated subsection, the girder are the prestressed concrete box girder for directly bearing train load.
Shear connector between the prefabricated subsection by end is mutually twisted fixation, and the end of main beam, which is provided with, meets beam
Hold the beam-ends cantilever block of prestressed stretch-draw space requirement.
The shear connector includes the web shear connector positioned at prefabricated subsection facade, the shearing of the top plate positioned at prefabricated subsection upper end
Key, the bottom plate shear connector positioned at prefabricated subsection lower end.
The prefabricated subsection seam crossing smears bridge epoxy resin sealant, and being provided at the prefabricated subsection makes epoxy
The permanent prestressing force of resin sealer cured interim prestressing force and realization prefabricated subsection splicing in the case where there is pressure state.
The sealing device for preventing blocking pipeline and ensuring durability is additionally provided between the prefabricated subsection.
The girder is equal jowar or gets higher beam, is got higher in beam across contour section longer, gets higher section beam bottom using repeatedly throwing
Object line or straight line.
The girder once half can complete subsequent midspan closing or a cantilever across assembly using bridge fabrication machine lifting splicing
Assembled one or more pairs of last midspan closings of prefabricated subsection, the midspan closing are joined the two sections of a bridge, etc by cast-in-place closure or wet seam.
The abutment pier, middle pier are arranged with infrastructure, and the infrastructure is pile foundation, Extended chemotherapy, well foundation
One kind.
The abutment pier, middle pier form end bay between girder, the Zhong Dun, middle pier, formed between girder in across, it is described in
Across being one or more.
The utility model the invention has the following advantages that
1, girder prefabricated subsection can be carried out simultaneously with substructure, and assembled speed is fast, and the construction period is short.
2, girder segment is prefabricated in the factory, and construction quality is guaranteed.
3, using etc. jowar, or increase and get higher contour segment length in girder span, reduction gets higher segment quantity, and it is pre- to be conducive to segment
Assembly unit construction processed, and it is handsome in appearance.
4, reducing the later period creeps, and realizes mechanization, standardized construction, and work progress is also more environmentally-friendly.
Detailed description of the invention
The overall structure diagram of Fig. 1 the utility model；
Shear connector facade arrangement schematic diagram in Fig. 2 the utility model；
Shear connector section arrangement schematic diagram in Fig. 3 the utility model；
Wherein:
Pier in 1 infrastructure 2
3 abutment pier, 4 girder
In 5 end bays 6 across
7 beam-ends cantilever block, 8 prefabricated subsection
9 web shear connector, 10 top plate shear connector
11 bottom plate shear connectors.
Specific embodiment
Hereinafter, the utility model is described in detail referring to drawings and examples:
As shown in Fig. 1 ~ 3, a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel, including two sides abutment pier
3 and the middle pier 2 positioned at middle part, girder 4 is provided on the abutment pier 3, middle pier 2, and the girder 4 is prefabricated to several are divided into along bridge
Segment 8, the girder 4 are the prestressed concrete box girder for directly bearing train load.
Fixation is mutually twisted by the shear connector of end between the prefabricated subsection 8,4 end of girder is provided with satisfaction
The beam-ends cantilever block 7 of beam-ends prestressed stretch-draw space requirement.
The shear connector includes web shear connector 9, the top plate positioned at 8 upper end of prefabricated subsection positioned at 8 facade of prefabricated subsection
Shear connector 10, the bottom plate shear connector 11 positioned at 8 lower end of prefabricated subsection.
8 seam crossing of prefabricated subsection smears bridge epoxy resin sealant, and being provided at the prefabricated subsection 8 makes ring
The permanent prestressing force of oxygen resin sealer cured interim prestressing force and realization prefabricated subsection splicing in the case where there is pressure state.
The sealing device for preventing blocking pipeline and ensuring durability is additionally provided between the prefabricated subsection 8.
The girder 4 is equal jowar or gets higher beam, is got higher in beam across contour section longer, gets higher section beam bottom using repeatedly throwing
Object line or straight line.
The girder 4 once half can complete subsequent midspan closing or a cantilever across assembly using bridge fabrication machine lifting splicing
The last midspan closing of assembled one or more pairs of prefabricated subsections 8, the midspan closing are joined the two sections of a bridge, etc by cast-in-place closure or wet seam.
The abutment pier 3, middle pier 2 are arranged with infrastructure 1, and the infrastructure 1 is pile foundation, Extended chemotherapy, open caisson
The one kind on basis.
The abutment pier 3, middle pier 2 form end bay 5 between girder 4, the middle pier 2, middle pier 2, formed between girder 4 in across
6, it is described in across 6 for one or more.
The girder 4 uses prestressed concrete continuous box girder, and girder 4 is supported on 3 top of middle pier 2 and abutment pier, bridge pier bottom
Portion is connect with infrastructure 1.By forming in the end bay 5 and one or more at both ends across 6, end bay 5 is linked to be in across 6 whole girder 4
Body.
The girder 4 indulges bridge to several prefabricated subsections 8 are divided into, and it is pre- to meet beam-ends that beam-ends cantilever block 7 is arranged in beam-ends
The requirement in stress tension space.Setting sealing device prevents blocking pipeline simultaneously between the corresponding prestress pipe of adjacent prefabricated subsection 8
Ensure its durability.Set the girder shear connector being mutually twisted between adjacent girder prefabricated subsection 8, shear connector include web shear connector 9,
Top plate shear connector 10 and bottom plate shear connector 11.
The web shear connector 9 bears Partial Shear；Top plate shear connector 10 bears bridge floor Local Loads, and spells for segment
Dress contraposition；Bottom plate shear connector 11 is mainly used for section assembling contraposition.
Joint face smears bridge epoxy resin sealant, and applying interim prestressing force makes epoxy resin sealant have pressure
Solidify under power state, with the permanent prestressing force of post-stretching, realizes prefabricated subsection splicing.
The Specific construction step of the utility model are as follows: construction infrastructure 1, and factory synchronize prefabricated prefabricated subsection 8 →
Pier 2 and abutment pier 3 in construction, and symmetrically hanged in the synchronous precast main beam prefabricated subsection 8 → 2 pier top girder segment of pier in constructing → of factory
The other segments of arm assembly girder 4, it is attached that tensioning corresponds to segment prestressing force → 4 midspan closing of girder, tensioning closure prestressed strands → bridge floor
Construction.
Girder segment is prefabricated in the factory, health and deposits beam, with reduce the later period shrink, time deformation.
Longitudinal reinforcement is discontinuous between adjacent girder prefabricated subsection 8, and longitudinal reinforcement protrudes into shear connector.
8 joint face of prefabricated subsection must clean, and remove concrete surface weaker zone, and gluing front surface should be dried.It spells segment
After dress, before epoxy resin sealant solidification, rain-proof measure should be taken, and avoid malformation.
Prestress pipe adds corrosion inhibitor in pipeline pneumatic mortar material using vacuum grouting technique is assisted.
Splicing is sewn on during entire construction and operation, and there can be no tensile stresses.
The prefabricated subsection can be carried out simultaneously with substructure, and assembled speed is fast, and the construction period is short.
The girder segment is prefabricated in the factory, and construction quality is guaranteed.
The jowar such as the utility model use, or increase and get higher contour segment length in girder span, reduction gets higher segment quantity, favorably
It constructs in segmental precast erection method, and handsome in appearance.
The utility model reduces the later period and creeps, and realizes mechanization, standardized construction, and work progress is also more environmentally-friendly.
Claims (9)
1. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel, including two sides abutment pier (3) and it is located at middle part
Middle pier (2), be provided with girder (4) on the abutment pier (3), middle pier (2), it is characterised in that: the girder (4) is along bridge to being divided into
Several prefabricated subsections (8), the girder (4) are the prestressed concrete box girder for directly bearing train load.
2. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel according to claim 1, feature
It is: fixation is mutually twisted by the shear connector of end between the prefabricated subsection (8), girder (4) end is provided with full
The beam-ends cantilever block (7) of sufficient beam-ends prestressed stretch-draw space requirement.
3. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel according to claim 2, feature
Be: the shear connector includes the web shear connector (9) positioned at prefabricated subsection (8) facade, the top positioned at prefabricated subsection (8) upper end
Plate shear connector (10), the bottom plate shear connector (11) for being located at prefabricated subsection (8) lower end.
4. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel according to claim 2, feature
Be: prefabricated subsection (8) seam crossing smears bridge epoxy resin sealant, and the prefabricated subsection (8), which is provided with, makes ring
The permanent prestressing force of oxygen resin sealer cured interim prestressing force and realization prefabricated subsection splicing in the case where there is pressure state.
5. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel according to claim 1, feature
It is: is additionally provided with the sealing device for preventing blocking pipeline and ensuring durability between the prefabricated subsection (8).
6. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel according to claim 1, feature
Be: the girder (4) is equal jowar or gets higher beam, gets higher in beam across contour section longer, gets higher section beam bottom using repeatedly throwing
Object line or straight line.
7. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel according to claim 1, feature
Be: the girder (4) once half can complete subsequent midspan closing or a cantilever across assembly using bridge fabrication machine lifting splicing
The last midspan closing of assembled one or more pairs of prefabricated subsections (8), the midspan closing are joined the two sections of a bridge, etc by cast-in-place closure or wet seam.
8. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel according to claim 1, feature
Be: the abutment pier (3), middle pier (2) are arranged with infrastructure (1), the infrastructure (1) be pile foundation, Extended chemotherapy,
One kind of well foundation.
9. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel according to claim 1, feature
Be: the abutment pier (3), middle pier (2) form end bay (5) between girder (4), are formed between two middle piers (2), girder (4)
Across (6), it is described in across (6) be one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820942862.XU CN208917655U (en) | 2018-06-19 | 2018-06-19 | A kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820942862.XU CN208917655U (en) | 2018-06-19 | 2018-06-19 | A kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208917655U true CN208917655U (en) | 2019-05-31 |
Family
ID=66693849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820942862.XU Active CN208917655U (en) | 2018-06-19 | 2018-06-19 | A kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208917655U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108660902A (en) * | 2018-06-19 | 2018-10-16 | 中国铁路总公司 | A kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel |
| CN110820533A (en) * | 2019-10-18 | 2020-02-21 | 同济大学 | Bridge design method capable of realizing repeated disassembly and assembly and novel bridge thereof |
| CN112112006A (en) * | 2020-08-28 | 2020-12-22 | 中铁第四勘察设计院集团有限公司 | Magnetic suspension track beam and track structure |
-
2018
- 2018-06-19 CN CN201820942862.XU patent/CN208917655U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108660902A (en) * | 2018-06-19 | 2018-10-16 | 中国铁路总公司 | A kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel |
| CN110820533A (en) * | 2019-10-18 | 2020-02-21 | 同济大学 | Bridge design method capable of realizing repeated disassembly and assembly and novel bridge thereof |
| CN112112006A (en) * | 2020-08-28 | 2020-12-22 | 中铁第四勘察设计院集团有限公司 | Magnetic suspension track beam and track structure |
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