CN108660902A - 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
- Publication number
- CN108660902A CN108660902A CN201810629306.1A CN201810629306A CN108660902A CN 108660902 A CN108660902 A CN 108660902A CN 201810629306 A CN201810629306 A CN 201810629306A CN 108660902 A CN108660902 A CN 108660902A
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- China
- Prior art keywords
- girder
- prestressed concrete
- pier
- connected panel
- prefabricated
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Classifications
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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
- E01D1/00—Bridges in general
-
- 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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of Railway Prestressed Concrete continuous bridges of precast segment pin-connected panel, middle pier including both sides abutment pier and positioned at middle part, it is provided with girder 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 simultaneously be carried out 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 present invention 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 present invention reduces the later stages to creep, and realizes that mechanization, standardized construction, work progress are also more environmentally-friendly.
Description
Technical field
The invention belongs to bridge structure building fields, and in particular to a kind of railway prestressed concrete of precast segment pin-connected panel
Native continuous bridge.
Background technology
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 ensure, the later stage creeps greatly, and has greater environmental impacts.General contour section of span centre for getting higher continuous beam compared with
Short, most of segment is to get higher section, is unfavorable for segmental precast erection method construction.
Invention content
The present invention proposes in order to solve the problems existing in the prior art, and the purpose is to provide a kind of precast segment pin-connected panel
Railway Prestressed Concrete continuous bridge.
The technical scheme is that：A kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel, including
Both sides abutment pier and middle pier positioned at middle part are provided with girder on the abutment pier, middle pier, and the girder is pre- to several are divided into along bridge
Segment processed, the girder 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, 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.
Being additionally provided between the prefabricated subsection prevents from blocking pipeline and ensures the sealing device of durability.
The girder is equal jowar or becomes jowar, is become in jowar 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 using bridge fabrication machine lifting splicing across assembly
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.
End bay is formed between the abutment pier, middle pier, girder, across in described in being formed between the Zhong Dun, middle pier, girder
Across for one or more.
Invention has the following advantages：
1, girder prefabricated subsection can simultaneously be carried out 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 stage creeps, and realizes that mechanization, standardized construction, work progress are also more environmentally-friendly.
Description of the drawings
The overall structure diagram of Fig. 1 present invention；
Shear connector facade arrangement schematic diagram in Fig. 2 present invention；
Shear connector section arrangement schematic diagram in Fig. 3 present invention；
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 implementation mode
Hereinafter, with reference to drawings and examples, the present invention is described in detail：
As shown in Fig. 1 ~ 3, a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel, including 3 He of both sides abutment pier
Middle pier 2 positioned at middle part, is provided with girder 4 on the abutment pier 3, middle pier 2, and the girder 4 is along bridge to being divided into several prefabricated sections
Section 8, the girder 4 is 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 set of the girder has 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 the 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.
Being additionally provided between the prefabricated subsection 8 prevents from blocking pipeline and ensures the sealing device of durability.
The girder 4 is equal jowar or becomes jowar, is become in jowar 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 using bridge fabrication machine lifting splicing across assembly
Assembled one or more pairs of 8 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 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.
Between the abutment pier 3, middle pier 2, girder 4 formed end bay 5, between the middle pier 2, middle pier 2, girder 4 formed in across
6, it is described in across 6 for one or more.
The girder 4 uses prestressed concrete continuous box girder, girder 4 to be supported on 3 top of middle pier 2 and abutment pier, bridge pier bottom
Portion is connect with infrastructure 1.By being formed across 6 in the end bay 5 and one or more at both ends, 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 from blocking pipeline simultaneously between adjacent prefabricated subsection 8 corresponds to prestress pipe
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 is spelled 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
Cure under power state, with the permanent prestressing force of post-stretching, realizes prefabricated subsection splicing.
The present invention Specific construction step be：Construction infrastructure 1, and synchronize prefabricated prefabricated subsection 8 → construction in factory
Middle pier 2 and abutment pier 3, and 2 pier top girder segment of pier → symmetrical cantilever is spelled in factory synchronizes precast main beam prefabricated subsection 8 → construction
4 other segments of girder are filled, tensioning corresponds to segment prestressing force → 4 midspan closing of girder, tensioning closure prestressed strands → attached construction of bridge floor.
Girder segment is prefabricated in the factory, health and deposits beam, with reduce the later stage shrink, time deformation.
Longitudinal reinforcement is discontinuous between adjacent girder prefabricated subsection 8, and longitudinal reinforcement stretches 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 using vacuum grouting technique is assisted in pipeline pneumatic mortar material.
Splicing is sewn on during entire construction and operation, tensile stress cannot occurs.
The prefabricated subsection can simultaneously be carried out 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 present invention use, or increase and get higher contour segment length in girder span, reduction gets higher segment quantity, is conducive to save
Section precast assembly method construction, and it is handsome in appearance.
The present invention reduces the later stages to creep, and realizes that mechanization, standardized construction, work progress are also more environmentally-friendly.
Claims (9)
1. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel, including both sides abutment pier（3）With positioned at middle part
Middle pier（2）, the abutment pier（3）, middle pier（2）On be provided with girder（4）, it is characterised in that：The girder（4）Along bridge to being divided into
Several prefabricated subsections（8）, the girder（4）Directly to bear the prestressed concrete box girder of train load.
2. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel according to claim 1, feature
It is：The prefabricated subsection（8）Between fixation, the girder be mutually twisted by the shear connector of end（4）End set has full
The beam-ends cantilever block of sufficient beam-ends prestressed stretch-draw space requirement（7）.
3. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel according to claim 2, feature
It is：The shear connector includes being located at prefabricated subsection（8）The web shear connector of facade（9）, be located at prefabricated subsection（8）The top of upper end
Plate shear connector（10）, be located at prefabricated subsection（8）The bottom plate shear connector of lower end（11）.
4. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel according to claim 2, feature
It is：The prefabricated subsection（8）Seam crossing smears bridge epoxy resin sealant, the prefabricated subsection（8）Being 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：The prefabricated subsection（8）Between be additionally provided with and prevent from blocking pipeline and ensure the sealing device of durability.
6. a kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel according to claim 1, feature
It is：The girder（4）For equal jowar or become jowar, become in jowar 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
It is：The girder（4）It is lifted and is spliced using bridge fabrication machine, once half can complete subsequent midspan closing or a cantilever across assembly
Assembled one or more pairs of prefabricated subsections（8）Last midspan closing, 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
It is：The abutment pier（3）, middle pier（2）It is arranged with infrastructure（1）, the infrastructure（1）For 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
It is：The abutment pier（3）, middle pier（2）, girder（4）Between form end bay（5）, the middle pier（2）, middle pier（2）, girder（4）It
Between formed in across（6）, it is described in across（6）For one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810629306.1A CN108660902A (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 |
|---|---|---|---|
| CN201810629306.1A CN108660902A (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 |
|---|---|
| CN108660902A true CN108660902A (en) | 2018-10-16 |
Family
ID=63775822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810629306.1A Pending CN108660902A (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) | CN108660902A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528403A (en) * | 2019-09-06 | 2019-12-03 | 广州瀚阳工程咨询有限公司 | A kind of construction method of the end bay without wet seam precast segment free cantilever erection continuous beam |
| CN112095477A (en) * | 2020-09-17 | 2020-12-18 | 中国十七冶集团有限公司 | Construction method of prefabricated segmental beam |
| CN112195781A (en) * | 2020-09-09 | 2021-01-08 | 广州瀚阳工程咨询有限公司 | Method for prefabricating section precast bridge by combining long and short line method with bidirectional matching method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201381470Y (en) * | 2009-03-05 | 2010-01-13 | 安徽省高速公路总公司 | Assembled variable cross-section composite continuous bridge |
| CN201738226U (en) * | 2010-07-15 | 2011-02-09 | 中铁第一勘察设计院集团有限公司 | Railway box girder assembled and cemented by precast segments |
| CN203795292U (en) * | 2014-03-27 | 2014-08-27 | 广州瀚阳工程咨询有限公司 | Bearing-free prestressed concrete continuous rigid frame bridge with double-wall piers |
| CN105155401A (en) * | 2015-08-24 | 2015-12-16 | 安徽省交通规划设计研究总院股份有限公司 | Bridge total external prestress concrete segment spliced light thin-walled box girder |
| CN208917655U (en) * | 2018-06-19 | 2019-05-31 | 中国铁路总公司 | A kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel |
-
2018
- 2018-06-19 CN CN201810629306.1A patent/CN108660902A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201381470Y (en) * | 2009-03-05 | 2010-01-13 | 安徽省高速公路总公司 | Assembled variable cross-section composite continuous bridge |
| CN201738226U (en) * | 2010-07-15 | 2011-02-09 | 中铁第一勘察设计院集团有限公司 | Railway box girder assembled and cemented by precast segments |
| CN203795292U (en) * | 2014-03-27 | 2014-08-27 | 广州瀚阳工程咨询有限公司 | Bearing-free prestressed concrete continuous rigid frame bridge with double-wall piers |
| CN105155401A (en) * | 2015-08-24 | 2015-12-16 | 安徽省交通规划设计研究总院股份有限公司 | Bridge total external prestress concrete segment spliced light thin-walled box girder |
| CN208917655U (en) * | 2018-06-19 | 2019-05-31 | 中国铁路总公司 | A kind of Railway Prestressed Concrete continuous bridge of precast segment pin-connected panel |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528403A (en) * | 2019-09-06 | 2019-12-03 | 广州瀚阳工程咨询有限公司 | A kind of construction method of the end bay without wet seam precast segment free cantilever erection continuous beam |
| CN110528403B (en) * | 2019-09-06 | 2021-08-13 | 瀚阳国际工程咨询有限公司 | Construction method for side-span non-wet joint section prefabricated cantilever assembly continuous beam |
| CN112195781A (en) * | 2020-09-09 | 2021-01-08 | 广州瀚阳工程咨询有限公司 | Method for prefabricating section precast bridge by combining long and short line method with bidirectional matching method |
| CN112195781B (en) * | 2020-09-09 | 2022-06-21 | 瀚阳国际工程咨询有限公司 | Method for prefabricating section precast bridge by combining long and short line method with bidirectional matching method |
| CN112095477A (en) * | 2020-09-17 | 2020-12-18 | 中国十七冶集团有限公司 | Construction method of prefabricated segmental beam |
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