CN107012777A - Track traffic uprises continuous U beams - Google Patents
Track traffic uprises continuous U beams Download PDFInfo
- Publication number
- CN107012777A CN107012777A CN201710326545.5A CN201710326545A CN107012777A CN 107012777 A CN107012777 A CN 107012777A CN 201710326545 A CN201710326545 A CN 201710326545A CN 107012777 A CN107012777 A CN 107012777A
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- Prior art keywords
- bottom plate
- continuous
- beams
- section
- track traffic
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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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Continuous U beams are uprised the present invention relates to a kind of track traffic.To make full bridge structure stress more reasonable, steel beam utilization rate improve, it is necessary at a kind of new fulcrum cross-sectional configuration continuous U girder constructions.The present invention includes the web that both sides and center above uiform section thickness and bottom plate in wave shape, bottom plate set longitudinal direction；It is pouring concrete section after being set above the bottom plate in the range of central bearing point, central bearing point both sides 30m at bottom plate trough.Compared to traditional continuous U section forms of beam, stress of the present invention is more reasonable, longitudinal steel beam effective rate of utilization lifting, using new type of continuous U section forms of beam, can meet in terms of spanning has necessary rigidity, economic technology and more save.
Description
Technical field
The invention belongs to bridge structure technical field of buildings, and in particular to a kind of track traffic uprises continuous U beams.
Background technology
Prestressed concrete U beams are a kind of bottom-road bridge girder construction forms, and bottom plate is used as carriageway plate, girder web plate conduct
Main bearing member, compared with car for deck bridge, can substantially reduce the height from bridge floor to beam bottom, when under-clearance by limited time,
The elevation of structure circuit can be effectively reduced.With the increase of span, continuous U beams are to ensure that beam body has certain rigidity, Ying Jia
Heavy in section size or the ratio of reinforcement, to ensure that beam body has certain rigidity and elastic carrying capacity.Due to evacuation platform and other are attached
The limitation of structure, deck-molding in a disguised form can only increase downwards, by suitably increasing base plate thickness to improve structure tension performance.
For traditional continuous U beams, due to the limitation of evacuation platform and other accessory structures, the routine of depth of section is adjusted
Way is：On the premise of keeping web height constant, increase base plate thickness downwards, while bottom plate transverse width is reduced, so as to change
Kind structure tension performance.
If simply increasing base plate thickness, beam section increase certainly will be caused at fulcrum and structural type is moved in the heart, substantially reduced
Section stress at fulcrum.In order to there is sufficient stress deposit, it is necessary to increase the quantity of roof and floor steel beam.Ultimately cause full-bridge steel
Beam consumption increases, and strength assurance coefficient is higher, and full-bridge construction costs is also higher.Therefore, in order that full bridge structure stress is more closed
Reason, steel beam utilization rate is improved, it is necessary to study a kind of continuous U girder constructions of cross-sectional configuration at new fulcrum to solve the problem.
The content of the invention
Continuous U beams are uprised it is an object of the invention to provide a kind of track traffic, uniform thickness bottom plate section form U beam knots are taken
Structure, effectively reduces fulcrum area of section, improves full-bridge longitudinal normal stress and vertical deformation, the conventional section form of optimization.
The technical solution adopted in the present invention is：
Track traffic uprises continuous U beams, it is characterised in that：
Including uiform section thickness and bottom plate in wave shape, both sides and center set the web of longitudinal direction above bottom plate；
It is pouring concrete section after being set above the bottom plate in the range of central bearing point, central bearing point both sides 30m at bottom plate trough.
Pouring concrete section and is flushed top surface level with bottom plate crest afterwards.
Pouring concrete section is longitudinally continuous the horizontal breaking joint of setting multiple tracks after-pouring concrete segment afterwards.
The web of bottom plate top center is vertical；
The oblique outside in web lower end of both sides above bottom plate, upper end is vertical.
The present invention has advantages below：
Compared to traditional continuous U section forms of beam, stress of the present invention is more reasonable, longitudinal steel beam effective rate of utilization lifting.Using new
The continuous U section forms of beam of type, can meet in terms of spanning has necessary rigidity, economic technology and more save.
Brief description of the drawings
The continuous U beams elevation of Fig. 1.
Beam body cross section at Fig. 2 span centres.
Beam body cross section at Fig. 3 central bearing points.
In figure, 1, bottom plate, 2, rear pouring concrete section, 3, web, 4, the horizontal breaking joint of after-pouring concrete segment.
Embodiment
With reference to embodiment, the present invention will be described in detail.
A kind of track traffic of the present invention uprises continuous U beams, and girder construction outer contour keeps one with conventional design
Cause, continuous U beam sections base plate thickness keeps constant, and Bottom Board Steel beam erects bent line and is consistent with board structure line style.In middle branch
Pouring concrete section, longitudinally disposed breaking joint after being set in the range of point both sides 30m.
Concrete structure includes uiform section thickness and bottom plate 1 in wave shape, and the top both sides of bottom plate 1 and center set the abdomen of longitudinal direction
Plate 3.The web 3 of the top center of bottom plate 1 is vertical；The oblique outside in the lower end of web 3 of the top both sides of bottom plate 1, upper end is vertical.Bottom plate 1
It is pouring concrete section 2 after the top of bottom plate 1 setting in the range of central bearing point, central bearing point both sides 30m at trough.Afterwards pouring concrete section 2
Top surface level is simultaneously flushed with the crest of bottom plate 1.Pouring concrete section 2 is longitudinally continuous the horizontal breaking joint of setting multiple tracks after-pouring concrete segment afterwards
4。
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And any equivalent conversion taken technical solution of the present invention, it is that claim of the invention is covered.
Claims (4)
1. track traffic uprises continuous U beams, it is characterised in that：
Including uiform section thickness and bottom plate in wave shape（1）, bottom plate（1）Top both sides and center set the web of longitudinal direction（3）；
Bottom plate（1）It is the bottom plate in the range of central bearing point, central bearing point both sides 30m at trough（1）Pouring concrete section after top is set
（2）.
2. track traffic according to claim 1 uprises continuous U beams, it is characterised in that：
Afterwards pouring concrete section（2）Top surface level and and bottom plate（1）Crest is flushed.
3. track traffic according to claim 1 uprises continuous U beams, it is characterised in that：
Afterwards pouring concrete section（2）It is longitudinally continuous the horizontal breaking joint of setting multiple tracks after-pouring concrete segment（4）.
4. track traffic according to claim 1 uprises continuous U beams, it is characterised in that：
Bottom plate（1）The web of top center（3）Vertically；
Bottom plate（1）The web of top both sides（3）The oblique outside in lower end, upper end is vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710326545.5A CN107012777A (en) | 2017-05-10 | 2017-05-10 | Track traffic uprises continuous U beams |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710326545.5A CN107012777A (en) | 2017-05-10 | 2017-05-10 | Track traffic uprises continuous U beams |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107012777A true CN107012777A (en) | 2017-08-04 |
Family
ID=59450480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710326545.5A Pending CN107012777A (en) | 2017-05-10 | 2017-05-10 | Track traffic uprises continuous U beams |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107012777A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4142468A (en) * | 1976-04-20 | 1979-03-06 | Charles Birnstiel | Elevated rail transit guideway with noise attenuators |
| CN101638882A (en) * | 2009-08-20 | 2010-02-03 | 上海市城市建设设计研究院 | Prestressed concrete three-web trough girder |
| CN202401383U (en) * | 2011-08-30 | 2012-08-29 | 北京城建设计研究总院有限责任公司 | A W-shaped beam for an urban rail transit three-rail power supply mode |
| CN202401382U (en) * | 2011-08-30 | 2012-08-29 | 重庆市轨道交通（集团）有限公司 | A W-shaped beam for an urban rail transit overhead line system power supply mode |
| CN103321137A (en) * | 2013-06-19 | 2013-09-25 | 江苏科技大学 | Groove-shaped bridge beam |
| CN105317002A (en) * | 2015-05-08 | 2016-02-10 | 贵州省水利水电勘测设计研究院 | Continuous rigid frame aqueduct variable box variable cross section transition beam section structure and design method |
| CN105317001A (en) * | 2015-05-08 | 2016-02-10 | 贵州省水利水电勘测设计研究院 | Variable box variable cross section continuous rigid frame aqueduct single-box single-chamber box girder and design method thereof |
| CN105696455A (en) * | 2015-12-30 | 2016-06-22 | 中铁第四勘察设计院集团有限公司 | Box type web simply supported U-shaped girder of double-track railway |
| CN206800162U (en) * | 2017-05-10 | 2017-12-26 | 中铁第一勘察设计院集团有限公司 | A kind of track traffic uprises continuous U beams |
-
2017
- 2017-05-10 CN CN201710326545.5A patent/CN107012777A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4142468A (en) * | 1976-04-20 | 1979-03-06 | Charles Birnstiel | Elevated rail transit guideway with noise attenuators |
| CN101638882A (en) * | 2009-08-20 | 2010-02-03 | 上海市城市建设设计研究院 | Prestressed concrete three-web trough girder |
| CN202401383U (en) * | 2011-08-30 | 2012-08-29 | 北京城建设计研究总院有限责任公司 | A W-shaped beam for an urban rail transit three-rail power supply mode |
| CN202401382U (en) * | 2011-08-30 | 2012-08-29 | 重庆市轨道交通（集团）有限公司 | A W-shaped beam for an urban rail transit overhead line system power supply mode |
| CN103321137A (en) * | 2013-06-19 | 2013-09-25 | 江苏科技大学 | Groove-shaped bridge beam |
| CN105317002A (en) * | 2015-05-08 | 2016-02-10 | 贵州省水利水电勘测设计研究院 | Continuous rigid frame aqueduct variable box variable cross section transition beam section structure and design method |
| CN105317001A (en) * | 2015-05-08 | 2016-02-10 | 贵州省水利水电勘测设计研究院 | Variable box variable cross section continuous rigid frame aqueduct single-box single-chamber box girder and design method thereof |
| CN105696455A (en) * | 2015-12-30 | 2016-06-22 | 中铁第四勘察设计院集团有限公司 | Box type web simply supported U-shaped girder of double-track railway |
| CN206800162U (en) * | 2017-05-10 | 2017-12-26 | 中铁第一勘察设计院集团有限公司 | A kind of track traffic uprises continuous U beams |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170804 |