CN103321137A - Groove-shaped bridge beam - Google Patents
Groove-shaped bridge beam Download PDFInfo
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- CN103321137A CN103321137A CN2013102450253A CN201310245025A CN103321137A CN 103321137 A CN103321137 A CN 103321137A CN 2013102450253 A CN2013102450253 A CN 2013102450253A CN 201310245025 A CN201310245025 A CN 201310245025A CN 103321137 A CN103321137 A CN 103321137A
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- base plate
- groove
- channel change
- shaped bridge
- arch
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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 the slabbed construction form, for guaranteeing the requirement of agent structure force and deformation rigidity, the base plate of flat type generally need to adopt larger thickness just can meet the demands, generally make 40cm thick, thicker base plate has caused the increase of structure engineering quantity and investment, and so that the center of gravity of channel change bridge is lower, the cross section efficiency index is on the low side, unfavorable to vertical bending resistance, weakened the span ability of channel change bridge.
Summary of the invention
The object of the invention is to overcome the defective of prior art, a kind of channel change bridge that has thinner base plate, has larger 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 sides web, it is characterized in that: described left-right longeron extends to form longitudinal stress structural system to striding the footpath direction, described base plate is horizontal arch, its limit, left and right sides is connected with described left-right longeron bottom respectively, described left and right sides web outwards with the arrangement of horizontal tilt one angle, the bottom of web is connected with described left-right longeron top respectively.
The transverse arch oblique crank Z line of base plate described above is linear to be in linear any of circular arc, parabola shaped or stretched wire.
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.
Left and right sides web described above outwards and level, the angle of inclination is more than or equal to 45 degree, less than 90 degree.
Plate upper surface described above also is provided with bridge deck pavement.
A kind of channel change bridge of the present invention, adopt to have following advantage and beneficial effect behind the horizontal arch floor:
(1) optimized bottom slab stress, adopt horizontal arch floor after, bottom slab stress is take pressure-bearing as main, the suffered moment of flexure of base plate reduces;
(2) because the suffered moment of flexure of base plate reduces, can reduce base plate and be subjected to the bar bending consumption and reduce base plate thickness;
(3) base plate thickness reduces, and can significantly reduce the concrete material consumption, compares with conventional channel change bridge, and the concrete material consumption can save 10% to 15%, significantly reduces the base arrangement deadweight, reduces construction costs;
(4) after the base plate deadweight reduced, the vertical bending moment that is caused by the base plate deadweight was also reduced, and can reduce longitudinal prestressing muscle consumption; Simultaneously, the span ability that reduces to increase channel change bridge of base plate deadweight.
(5) base plate adopts horizontal arch floor, so that move on the center of gravity of channel change bridge structure, improves the cross section efficiency index at longitudinal prestressing muscle place, further reduces longitudinal prestressing muscle consumption, further reduces construction costs.
The application advantage of channel change bridge is, not only can effectively reduce the building height of bridge superstructure, has simultaneously the reduction noise, anti-driving is disturbed, anti-side direction beam wind, guarantee the advantage of traffic safety, be specially adapted to pass through urban compact population traffic route, area 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 that brings of traditional channel change bridge base plate, had improved the stress performance of channel change bridge base plate, had reduced construction costs, had increased the span ability of such bridge.
Description of drawings
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.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, a kind of channel change bridge, by left-right longeron 1, laterally arch floor 2 and left and right sides web 3 consist of the agent structure of flute profile beam bridge, described left-right longeron 1 extends to form longitudinal stress structural system to striding the footpath direction.The transverse arch oblique crank Z line that described horizontal arch floor 2 adopts is linear to be circular arc, laterally the vault of arch floor 2 is positioned at bridge cross section center line, dual-side and left-right longeron 1 integrated connection of horizontal arch floor 2, described left and right sides web 3 outwards with the horizontal plane angle arrangement of tilting, the bottom of left and right sides web is connected with described left-right longeron top respectively.
Specific construction flow process of the present invention is as follows:
(1) at first sets up support and template;
(2) assembling reinforcement, the reinforcing bar of longeron, base plate and web part bottom comprising;
(3) reserve longeron presstressed reinforcing steel duct, concreting comprises longeron, base plate and web part;
(4) stretch-draw prestressing force concrete steel bundle, the anchoring termination is built anchored end end socket concrete and is carried out construction and maintenance.
Corresponding construction construction features of the present invention:
(1) base plate adopts horizontal domes, and laterally the ratio of rise to span of arch floor changes in 1/16 to 1/4 scope;
(2) horizontal arch floor both sides and bottom longeron integrated connection;
(3) the bottom longeron is to bear vertical bending moment as main;
(4) horizontal arch floor is take pressure-bearing as main, suffered moment of flexure is less, so base plate can than the base plate of flat type do thinner, reduce base plate and be subjected to bar bending consumption and concrete material consumption, compare with conventional channel change bridge, the concrete material consumption can save 10% to 15%, has significantly alleviated the base plate deadweight, the vertical bending moment that is caused by the base plate deadweight is also reduced, and has increased the span ability of channel change bridge.
(5) base plate adopts horizontal arch form of structure, can improve the cross section efficiency index at longitudinal prestressing muscle place so that move on the center of gravity of channel change bridge structure, further reduces longitudinal prestressing muscle consumption, further reduces construction costs.
Claims (6)
1. channel change bridge, comprise left-right longeron (1), base plate (2) and left and right sides web (3), it is characterized in that: described left-right longeron (1) extends to form longitudinal stress structural system to striding the footpath direction, described base plate (2) is horizontal arch, its limit, left and right sides is connected with described left-right longeron (1) bottom respectively, described left and right sides web (3) outwards with the horizontal plane angle arrangement of tilting, the bottom of web (3) is connected with described left-right longeron (1) top respectively.
2. a kind of channel change bridge according to claim 1 is characterized in that: the transverse arch oblique crank Z line of described base plate (2) is linear to be in linear any of circular arc, parabola shaped or stretched wire.
3. according to claim 1 to 2 described a kind of channel change bridges, it is characterized in that: the transverse arch tee section form of described base plate (2) is plate arch or box-shaped arch.
4. according to claim 1 to 2 described a kind of channel change bridges, it is characterized in that: the horizontal arch ratio of rise to span of described base plate (2) is 1/4 to 1/16.
5. a kind of channel change bridge according to claim 1 is characterized in that: described angle is more than or equal to 45 degree, less than 90 degree.
6. a kind of channel change bridge according to claim 1, it is characterized in that: described base plate (2) upper surface also is equipped with bridge deck pavement.
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 true CN103321137A (en) | 2013-09-25 |
| CN103321137B CN103321137B (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310245025.3A Active CN103321137B (en) | 2013-06-19 | 2013-06-19 | Groove-shaped bridge beam |
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| Country | Link |
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| CN (1) | CN103321137B (en) |
Cited By (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 (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002047616A (en) * | 2000-08-04 | 2002-02-15 | Ttk Corp | Synthetic floorslab and steel bridge |
| 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 |
-
2013
- 2013-06-19 CN CN201310245025.3A patent/CN103321137B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002047616A (en) * | 2000-08-04 | 2002-02-15 | Ttk Corp | Synthetic floorslab and steel bridge |
| 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 |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103321137B (en) | 2015-07-08 |
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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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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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