CN112832111A - Prestressed concrete combined continuous box girder bridge structure system - Google Patents
Prestressed concrete combined continuous box girder bridge structure system Download PDFInfo
- Publication number
- CN112832111A CN112832111A CN202110048431.5A CN202110048431A CN112832111A CN 112832111 A CN112832111 A CN 112832111A CN 202110048431 A CN202110048431 A CN 202110048431A CN 112832111 A CN112832111 A CN 112832111A
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- Prior art keywords
- box girder
- steel
- bridge
- finish
- prestressed
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- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 70
- 239000010959 steel Substances 0.000 claims abstract description 70
- 238000010276 construction Methods 0.000 claims abstract description 34
- 239000004567 concrete Substances 0.000 claims abstract description 30
- 239000000725 suspension Substances 0.000 claims abstract description 12
- 238000004873 anchoring Methods 0.000 claims abstract description 4
- 238000005452 bending Methods 0.000 claims abstract description 3
- 238000005266 casting Methods 0.000 claims abstract description 3
- 230000002787 reinforcement Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 7
- 210000002435 tendon Anatomy 0.000 description 5
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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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
- 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
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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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 prestressed concrete combined continuous box girder bridge structure system which comprises a concrete bridge deck, an open steel box and finish-rolled deformed steel bars, wherein the concrete bridge deck is formed by casting in a cast-in-place mode, the cross section of the open steel box consists of a bottom steel plate, a plurality of webs and a top plate, and a finish-rolled deformed steel bar anchoring device is prestressed steel bars with negative bending moment above a continuous beam support after the open steel box is in a segmented suspension assembly construction stage and a bridge. The invention provides a prestressed concrete combined continuous box girder bridge structure system which has the advantages of low construction difficulty, construction temporary facilities saving and construction cost saving, and achieves the effect of combining a temporary structure and a permanent structure into a whole.
Description
Technical Field
The invention relates to the field of bridge construction, in particular to a prestressed concrete combined continuous box girder bridge structure system.
Background
The traditional or existing prestressed concrete combined continuous box girder bridge generally adopts the form of internal and external prestressed tendons to control the linearity of the combined girder. It is characterized in that: after the construction of the steel box girder and the concrete bridge deck is finished, internal and external prestressed tendons are tensioned, and steel tendon holes need to be reserved before tensioning. The construction method has the advantages of complex process, higher construction difficulty and higher construction cost. The defects are as follows: the steel-concrete combined continuous box girder bridge structure system is formed by adopting the internal and external prestressed tendons, and has slow construction progress and poor economy.
Therefore, a prestressed reinforced concrete combined continuous box girder bridge structural system for solving the above problems becomes an urgent problem to be solved in the whole society.
Disclosure of Invention
The invention aims to solve the technical problems that a steel-concrete combined continuous box girder bridge structure system is formed by adopting internal and external prestressed tendons in the prior art, the construction progress is slow, the economical efficiency is poor and the like.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: the utility model provides a continuous box girder bridge structure system of prestressed reinforcement concrete combination, includes concrete bridge deck slab, opening steel box girder and finish rolling screw-thread steel, concrete bridge deck slab adopts cast-in-place mode to pour and forms, the cross section of opening steel box girder comprises a bottom plate, a plurality of web and roof, finish rolling screw-thread steel anchor is opening steel box girder segmentation suspension makeup construction stage and the prestressing steel of the back continuous beam support top negative moment behind the bridge, its characterized in that, carries out the suspension makeup construction to opening steel box girder of lower part with finish rolling screw-thread steel, becomes the opening steel box girder continuous beam structure that has bearing capacity after the closure, then carries out concrete bridge deck slab construction above, and finish rolling screw-thread steel needn't dismantle after the bridge becomes the bridge, imbeds in concrete bridge deck slab, can partially relax, exerts prestressing force to concrete bridge deck slab.
Furthermore, the open steel box girder is assembled by finish-rolled deformed steel bars.
Furthermore, the finish-rolled deformed steel bar is used as a prestressed reinforcement for the sectional suspension construction of the open steel box girder in the construction stage, and a prestressed continuous steel box girder bridge with the bearing capacity is formed after closure.
Compared with the prior art, the invention has the advantages that: the invention provides a prestressed concrete combined continuous box girder bridge structure system which has the advantages of low construction difficulty, construction temporary facilities saving and construction cost saving, and achieves the effect of combining a temporary structure and a permanent structure into a whole. The invention adopts finish-rolled deformed steel bars to assemble the open steel box girder, the finish-rolled deformed steel bars are used as prestressed reinforcements for steel box girder subsection suspension assembly construction in the construction stage, a prestressed continuous steel box girder bridge with bearing capacity is formed after closure, the prestressed continuous steel box girder bridge is used as a construction platform for bridge deck concrete construction, and bridge deck concrete pouring construction is carried out.
Drawings
FIG. 1 is a schematic structural view of a prestressed concrete combined continuous box girder bridge structural system;
FIG. 2 is a schematic structural view of a concrete deck slab;
FIG. 3 is a schematic structural view of an open steel box girder stage;
fig. 4 is a schematic structural view of the finish-rolled deformed steel bar anchoring device.
As shown in the figure: 1. concrete bridge deck slab, 2, opening steel box girder, 3, finish rolling screw-thread steel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present invention will be described in detail with reference to the accompanying drawings.
The invention provides a prestressed concrete combined continuous box girder bridge structure system in specific implementation, which comprises a concrete bridge deck 1, an open steel box girder 2 and finish rolled deformed steel bar 3, the concrete bridge deck 1 is formed by casting in a cast-in-place mode, the cross section of the open steel box girder 2 consists of a bottom steel plate, a plurality of web plates and a top plate, the finish rolling deformed steel bar anchoring device 3 is prestressed steel bars with negative bending moment above a continuous beam support at the rear of the bridge and at the sectional suspension splicing construction stage of the open steel box beam 2, it is characterized in that finish rolling deformed steel bar 3 is used for carrying out the suspension splicing construction on the open steel box girder at the lower part, and the open steel box girder 2 continuous girder structure with the bearing capacity is formed after closure, and then the concrete bridge deck slab 1 is constructed, the finish-rolled deformed steel bars 3 do not need to be dismantled after forming a bridge, and are embedded in the concrete bridge deck slab 1 and can be partially loosened to apply prestress to the concrete bridge deck slab 1.
The open steel box girder 2 is assembled by adopting finish-rolled deformed steel bars 3. And the finish-rolled deformed steel bar 3 is used as a prestressed reinforcement for the sectional suspension construction of the open steel box girder 2 in the construction stage, and forms a prestressed continuous steel box girder bridge with bearing capacity after closure. The specific embodiment of the invention is as follows: firstly, carrying out suspension splicing construction on the open steel box girder 2 at the lower part by using finish-rolled deformed steel bar 3 as prestress, and forming an open steel box girder 2 continuous beam structure with bearing capacity after closure; and then the concrete bridge deck slab 1 is constructed, the finish-rolled deformed steel bars 3 do not need to be dismantled after forming a bridge, and are embedded in the concrete bridge deck slab 1 and can be partially loosened to apply prestress to the concrete bridge deck slab 1.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. A prestressed concrete combined continuous box girder bridge structure system comprises a concrete bridge deck (1), an open steel box girder (2) and finish-rolled deformed steel bars (3), wherein the concrete bridge deck (1) is formed by casting in a cast-in-place mode, the cross section of the open steel box girder (2) consists of a bottom steel plate, a plurality of webs and a top plate, the finish-rolled deformed steel bar anchoring device (3) is a prestressed reinforcement with negative bending moment above a continuous beam support at the segmented suspension assembly construction stage of the open steel box girder (2) and behind the bridge, and is characterized in that the finish-rolled deformed steel bars (3) are used for performing suspension assembly construction on the open steel box girder at the lower part to form an open steel box girder (2) continuous beam structure with bearing capacity after closure, then the concrete bridge deck (1) construction is performed on the open steel box girder bridge deck, the finish-rolled deformed steel bars (3) do not need to be dismantled after the bridge is formed and are buried in the concrete bridge deck (1, can be partially relaxed to prestress the concrete bridge deck (1).
2. The prestressed steel-concrete combined continuous box girder bridge structural system according to claim 1, wherein: the open steel box girder (2) is assembled by adopting finish-rolled deformed steel bars (3).
3. The prestressed steel-concrete combined continuous box girder bridge structural system according to claim 1, wherein: and the finish-rolled deformed steel bar (3) is used as a prestressed reinforcement for the sectional suspension construction of the open steel box girder (2) in the construction stage, and forms a prestressed continuous steel box girder bridge with bearing capacity after closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110048431.5A CN112832111A (en) | 2021-01-14 | 2021-01-14 | Prestressed concrete combined continuous box girder bridge structure system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110048431.5A CN112832111A (en) | 2021-01-14 | 2021-01-14 | Prestressed concrete combined continuous box girder bridge structure system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112832111A true CN112832111A (en) | 2021-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110048431.5A Pending CN112832111A (en) | 2021-01-14 | 2021-01-14 | Prestressed concrete combined continuous box girder bridge structure system |
Country Status (1)
| Country | Link |
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| CN104153284A (en) * | 2014-07-31 | 2014-11-19 | 桂林理工大学 | Partial filling type steel box concrete continuous composite girder bridge and construction method thereof |
| KR20170069680A (en) * | 2015-12-11 | 2017-06-21 | 강인화 | Corrugated Steel Plate Web-PSC Composite Girder And Construction Method Thereof |
| KR101831733B1 (en) * | 2017-04-06 | 2018-02-23 | 우경기술주식회사 | Girder conection construction method |
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| CN109914216A (en) * | 2019-03-29 | 2019-06-21 | 湖南大学 | A kind of assembled box beam combined type node across ultra-high performance concrete greatly and attaching method thereof |
| JP6564921B1 (en) * | 2018-10-17 | 2019-08-21 | 黒沢建設株式会社 | Reinforcement method and reinforcement structure of hinge part in hinge girder bridge with PC |
| CN111455865A (en) * | 2020-05-22 | 2020-07-28 | 中铁四局集团第五工程有限公司 | Temporary pre-stressed anchoring device for assembling precast concrete segment box girder |
| CN112012091A (en) * | 2020-09-01 | 2020-12-01 | 湖南大学 | UHPC-NC mixed box girder, large-span rigid frame bridge and construction method thereof |
-
2021
- 2021-01-14 CN CN202110048431.5A patent/CN112832111A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200189311Y1 (en) * | 1999-12-10 | 2000-07-15 | 김근택 | A psc beam having above typed anchor blocks |
| CN101255677A (en) * | 2008-04-08 | 2008-09-03 | 湖南大学 | Portion waveshape steel web plate pre-stress steel-concrete continuous combined case beam |
| CN102425117A (en) * | 2011-12-26 | 2012-04-25 | 中铁大桥局股份有限公司 | Construction method for non-cantilever sections of sidespans of multiplex continuous beam or steel-constructed beam |
| CN104153284A (en) * | 2014-07-31 | 2014-11-19 | 桂林理工大学 | Partial filling type steel box concrete continuous composite girder bridge and construction method thereof |
| KR20170069680A (en) * | 2015-12-11 | 2017-06-21 | 강인화 | Corrugated Steel Plate Web-PSC Composite Girder And Construction Method Thereof |
| KR101831733B1 (en) * | 2017-04-06 | 2018-02-23 | 우경기술주식회사 | Girder conection construction method |
| CN108978434A (en) * | 2018-10-16 | 2018-12-11 | 河南省交通规划设计研究院股份有限公司 | A kind of Novel steel-is mixed to be combined Continuous Box Girder Bridge and its industrializes construction method without bracket |
| JP6564921B1 (en) * | 2018-10-17 | 2019-08-21 | 黒沢建設株式会社 | Reinforcement method and reinforcement structure of hinge part in hinge girder bridge with PC |
| CN109914216A (en) * | 2019-03-29 | 2019-06-21 | 湖南大学 | A kind of assembled box beam combined type node across ultra-high performance concrete greatly and attaching method thereof |
| CN111455865A (en) * | 2020-05-22 | 2020-07-28 | 中铁四局集团第五工程有限公司 | Temporary pre-stressed anchoring device for assembling precast concrete segment box girder |
| CN112012091A (en) * | 2020-09-01 | 2020-12-01 | 湖南大学 | UHPC-NC mixed box girder, large-span rigid frame bridge and construction method thereof |
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