CN103321137B - Groove-shaped bridge beam - Google Patents
Groove-shaped bridge beam Download PDFInfo
- Publication number
- CN103321137B CN103321137B CN201310245025.3A CN201310245025A CN103321137B CN 103321137 B CN103321137 B CN 103321137B CN 201310245025 A CN201310245025 A CN 201310245025A CN 103321137 B CN103321137 B CN 103321137B
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- China
- Prior art keywords
- groove
- shaped bridge
- base plate
- bridge beam
- bottom plate
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- Expired - Fee Related
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- 239000000463 material Substances 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 9
- 210000003205 muscle Anatomy 0.000 description 7
- 238000005452 bending Methods 0.000 description 6
- 230000005484 gravity Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a groove-shaped bridge beam. The groove-shaped bridge beam comprises a left longitudinal beam, a right longitudinal beam, a bottom plate, a left web and a right web and is characterized in that the left longitudinal beam and the right longitudinal beam extend in a span direction to form a longitudinal structural system, the bottom plate is in a transverse arc shape, both sides of the groove-shaped bridge beam are connected with the lower ends of the left longitudinal beam and the right longitudinal beam, each web is arranged at an inclined angle to the horizontal line, and the lower ends of the webs are connected with the upper ends of the left longitudinal beam and the right longitudinal beam. According to the groove-shaped bridge beam, the transverse arc bottom plate replaces the flat bottom plate of a common groove-shaped bridge beam. Compared with the common groove-shaped bridge beam, the groove-shaped bridge beam can reduce the thickness of the bottom plate of the groove-shaped bridge beam and the consumption of materials of concrete and steel bars and improve the span capacity of the groove-shaped bridge beam due to the thinner bottom plate.
Description
Technical field
The invention belongs to technical field of civil engineering, relate to a kind of bridge engineering structure, more specifically relate to a kind of channel change bridge.
Background technology
Existing channel change bridge is by longeron, base plate adds the project subject structure of the web formation channel change bridge of both sides, base plate adopts slabbed construction form, for ensureing the requirement of agent structure force and deformation rigidity, the base plate of flat type generally needs to adopt larger thickness just can meet the demands, generally make 40cm thick, thicker base plate result in the increase of Structural Engineering amount and investment, and make the center of gravity of channel change bridge lower, section efficiency index is on the low side, unfavorable to longitudinal bending resistance, reduce the span ability of channel change bridge.
Summary of the invention
The object of the invention is to the defect overcoming prior art, a kind of channel change bridge having thinner base plate, have more Great span ability is provided.
In order to achieve the above object, technical scheme of the present invention is:
A kind of channel change bridge, comprise left-right longeron, base plate and left and right web, it is characterized in that: described left-right longeron extends to form longitudinal stress structural system to across direction, footpath, described base plate is horizontal arch, its limit, left and right sides is connected below with described left-right longeron respectively, and described left and right web is outwards settled with horizontal tilt one angle, and the following of web is connected with described left-right longeron top respectively.
The transverse arch shape axial alignment of base plate described above be circular arc, parabola shaped or stretched wire linear in any one.
The transverse arch tee section form of base plate described above is plate arch or box-shaped arch.
The horizontal arch ratio of rise to span of base plate described above is 1/4 to 1/16.
Outwards and level, the angle of inclination, for being more than or equal to 45 degree, is less than 90 degree to left and right web described above.
Plate upper surface described above is also provided with bridge deck pavement.
A kind of channel change bridge of the present invention, after adopting horizontal arch floor, tool has the following advantages and beneficial effect:
(1) optimize bottom slab stress, after adopting horizontal arch floor, bottom slab stress is based on pressure-bearing, and moment of flexure suffered by base plate reduces;
(2) suffered by base plate, moment of flexure reduces, and can reduce base plate bending steel muscle consumption and reduce base plate thickness;
(3) base plate thickness reduces, and can significantly reduce concrete material consumption, compared with conventional channel change bridge, concrete material consumption can save 10% to 15%, significantly reduces base arrangement deadweight, reduces construction costs;
(4), after base plate deadweight reduces, also reduced by the base plate vertical bending moment caused of conducting oneself with dignity, longitudinal prestressing muscle consumption can be reduced; Meanwhile, the reduction of base plate deadweight can increase the span ability of channel change bridge.
(5) base plate adopts horizontal arch floor, makes the center of gravity of channel change bridge structure is moved, and improves the section efficiency index at longitudinal prestressing muscle place, reduces longitudinal prestressing muscle consumption further, reduces construction costs further.
The application advantage of channel change bridge is, not only effectively can reduce the building height of bridge superstructure, there is reduction noise simultaneously, anti-driving interference, anti-side is to beam wind, ensure the advantage of traffic safety, be specially adapted to pass through urban compact population area traffic circuit and pass through the traffic route with larger beam wind area.A kind of channel change bridge of the present invention, had both solved the blocked up series of problems brought of traditional channel change bridge base plate, and had improved the stress performance of channel change bridge base plate, reduce construction costs, increase the span ability of such bridge.
Accompanying drawing explanation
Fig. 1 is the structure schematic top plan view of channel change bridge of the present invention.
Fig. 2 is the A-A sectional drawing of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As depicted in figs. 1 and 2, a kind of channel change bridge, is made up of the agent structure of channel girder left-right longeron 1, horizontal arch floor 2 and left and right web 3, described left-right longeron 1 extends to form longitudinal stress structural system to across direction, footpath.The transverse arch shape axial alignment that described horizontal arch floor 2 adopts is circular arc, the vault of horizontal arch floor 2 is positioned at bridge cross section center line, the dual-side of horizontal arch floor 2 and left-right longeron 1 integrated connection, described left and right web 3 is outwards settled with horizontal plane one angle, and the following of left and right web is connected with described left-right longeron top respectively.
Specific construction flow process of the present invention is as follows:
(1) support and template is first set up;
(2) assembling reinforcement, comprises the reinforcing bar of base longerons, base plate and web part;
(3) reserved longeron presstressed reinforcing steel duct, concreting, comprises longeron, base plate and web part;
(4) stretch-draw prestressing force concrete steel bundle, anchoring termination, builds anchored end end socket concrete and carries out construction and maintenance.
Corresponding construction construction features of the present invention:
(1) base plate adopts horizontal domes, and the ratio of rise to span of horizontal arch floor changes in 1/16 to 1/4 scope;
(2) horizontal arch floor both sides and base longerons integrated connection;
(3) base longerons is to bear vertical bending moment;
(4) horizontal arch floor is based on pressure-bearing, suffered moment of flexure is less, so base plate can than the base plate of flat type do thinner, decrease base plate bending steel muscle consumption and concrete material consumption, compared with conventional channel change bridge, concrete material consumption can save 10% to 15%, significantly reduces base plate deadweight, also reduced by the base plate vertical bending moment caused of conducting oneself with dignity, increased the span ability of channel change bridge.
(5) base plate adopts horizontal arched forms, can make the center of gravity of channel change bridge structure is moved, and improves the section efficiency index at longitudinal prestressing muscle place, reduces longitudinal prestressing muscle consumption further, reduces construction costs further.
Claims (1)
1. a channel change bridge, comprise left-right longeron (1), base plate (2) and left and right web (3), it is characterized in that: described left-right longeron (1) extends to form longitudinal stress structural system to across direction, footpath, described base plate (2) is in horizontal arch, the axial alignment of described horizontal arch is circular arc, parabola shaped or stretched wire is linear, the section form of horizontal arch is plate arch or box-shaped arch, the ratio of rise to span of horizontal arch is 1/4 to 1/16, and its limit, left and right sides is connected below with described left-right longeron (1) respectively; Described left and right web (3) is outwards more than or equal to 45 degree with horizontal plane one, and the angle being less than 90 degree is settled, and the following of left and right web (3) is connected with described left-right longeron (1) top respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310245025.3A CN103321137B (en) | 2013-06-19 | 2013-06-19 | Groove-shaped bridge beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310245025.3A CN103321137B (en) | 2013-06-19 | 2013-06-19 | Groove-shaped bridge beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103321137A CN103321137A (en) | 2013-09-25 |
| CN103321137B true CN103321137B (en) | 2015-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310245025.3A Expired - Fee Related CN103321137B (en) | 2013-06-19 | 2013-06-19 | Groove-shaped bridge beam |
Country Status (1)
| Country | Link |
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| CN (1) | CN103321137B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107012777A (en) * | 2017-05-10 | 2017-08-04 | 中铁第勘察设计院集团有限公司 | Track traffic uprises continuous U beams |
| CN107119548A (en) * | 2017-06-13 | 2017-09-01 | 林再颐 | A kind of channel change bridge for having anti-high wind ability |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2575148Y (en) * | 2002-09-26 | 2003-09-24 | 上海市隧道工程轨道交通设计研究院 | Balance device for obstructing passage of vehicle |
| KR100603906B1 (en) * | 2005-12-28 | 2006-07-24 | 한국철도시설산업 (주) | Pc girder bridge of u-type |
| KR100665876B1 (en) * | 2006-03-31 | 2007-01-09 | 우경건설 주식회사 | The prestressed opening trapezoid waveform still girder construction method of having installed concrete caisson in the upper flange |
| CN201125362Y (en) * | 2007-09-13 | 2008-10-01 | 赛思达(上海)技术咨询有限公司 | Prestressing force elevated structure for rail traffic |
| CN102286915A (en) * | 2011-08-30 | 2011-12-21 | 北京城建设计研究总院有限责任公司 | Urban railway traffic continuous basin type beam |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3839648B2 (en) * | 2000-08-04 | 2006-11-01 | 株式会社東京鐵骨橋梁 | Composite floor slab and steel bridge |
-
2013
- 2013-06-19 CN CN201310245025.3A patent/CN103321137B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2575148Y (en) * | 2002-09-26 | 2003-09-24 | 上海市隧道工程轨道交通设计研究院 | Balance device for obstructing passage of vehicle |
| KR100603906B1 (en) * | 2005-12-28 | 2006-07-24 | 한국철도시설산업 (주) | Pc girder bridge of u-type |
| KR100665876B1 (en) * | 2006-03-31 | 2007-01-09 | 우경건설 주식회사 | The prestressed opening trapezoid waveform still girder construction method of having installed concrete caisson in the upper flange |
| CN201125362Y (en) * | 2007-09-13 | 2008-10-01 | 赛思达(上海)技术咨询有限公司 | Prestressing force elevated structure for rail traffic |
| CN102286915A (en) * | 2011-08-30 | 2011-12-21 | 北京城建设计研究总院有限责任公司 | Urban railway traffic continuous basin type beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103321137A (en) | 2013-09-25 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20130925 Assignee: Center for technology transfer Jiangsu University of Science and Technology Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2021980006173 Denomination of invention: A trough bridge Granted publication date: 20150708 License type: Common License Record date: 20210714 |
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| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Center for technology transfer Jiangsu University of Science and Technology Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2021980006173 Date of cancellation: 20210826 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 |