CN102031749B - Grid structure for controlling girder induced vibration of split steel box girder bridge - Google Patents
Grid structure for controlling girder induced vibration of split steel box girder bridge Download PDFInfo
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- CN102031749B CN102031749B CN 200910093762 CN200910093762A CN102031749B CN 102031749 B CN102031749 B CN 102031749B CN 200910093762 CN200910093762 CN 200910093762 CN 200910093762 A CN200910093762 A CN 200910093762A CN 102031749 B CN102031749 B CN 102031749B
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Abstract
The invention discloses a grid structure for controlling the girder induced vibration of a split steel box girder bridge, and relates to bridge technology. The grid structure comprises a grid and a grid supporting frame. The grid is arranged on the upper surface of the grid supporting frame, and the grid is fixed to the upper surface of the grid supporting frame in a welding or bolting manner so as to be positioned on the top of a central groove of the split steel box girder; the top surface of the grid is flush with the top surface of the split steel box girder; and the circumferential rim of the grid is fixed on a steel box girder of the split steel box girder and a connecting cross beam. The plane of the grid supporting frame is pound-shaped or star-shaped; and the cross section of the grid supporting frame is I-shaped or rectangular. The grid structure is longitudinally arranged along the bridge and is broken at the connecting cross beam of the split steel box girder; the length of the arrangement region is 1/2 to 1 time of the main span length of the bridge; and the air permeation rate of the grid structure is 40 to 80 percent. The grid structure can inhibit vortex produced by air which passes through the split steel box girder, thereby effectively controlling the induced vibration of the split steel box girder, and the grid structure is simple in structure, convenient to assemble and good in economic property.
Description
Technical field
The present invention relates to technical field of bridge engineering, is a kind of cell structure of controlling the girder vortex-induced vibration of split type steel box girder bridge beam.
Background technology
Split type steel case beam is a kind of girder form of bridge, and this type girder adopts in many bridge blocks such as Zhoushan, Zhejiang Lian Dao engineering west watchtower in ancient times door bridge, AngChuan Zhou, Hong Kong bridge, navigation channel, river, Dagu, Transbay Bridge, Qingdao bridge.Results of wind tunnel shows that adopt the bridge of split type steel case beam as girder, the vortex-induced vibration than large amplitude may take place girder, need adopt an effective measure and carry out vibration isolation under certain condition.
The vortex-induced vibration of bridge main beam is under certain condition, the oscillation phenomenon that the regular vortex that is produced when crossing girder owing to air communication comes off and causes.The vortex-induced vibration of bridge main beam causes important threat will for bridge structure safe and road-ability, must take certain measure to control effectively.
The control measure of bridge main beam vortex-induced vibration mainly contain mechanical damping measure and pneumatic control measure.Mechanical damping measure such as tuned mass damper, Tuned Liquid etc., pneumatic control measure such as deflector, spoiler, tuyere etc.Adopt the bridge of split type steel case beam at present, adopt deflector to control the vortex-induced vibration of girder usually, like Zhoushan, Zhejiang Lian Dao engineering west watchtower in ancient times door bridge, AngChuan Zhou, Hong Kong bridge etc. as girder.
Research shows, for the bridge that adopts split type steel case beam as girder, the system of the ordinary circumstance chin spoiler effect of shaking is relatively good.But adopt the bridge of split type steel case beam for some; The control DeGrain of deflector, for the amplitude with vortex-induced vibration is controlled within the acceptable scope, the size of deflector need be done greatlyyer; Will cause structure construction complicated like this, and economic cost is higher.
Summary of the invention
The purpose of this invention is to provide a kind of cell structure of controlling the girder vortex-induced vibration of split type steel box girder bridge beam, this cell structure is a kind of pneumatic control measure, can effectively control the amplitude of the vortex-induced vibration of split type steel case beam.
To achieve these goals, technical solution of the present invention is:
A kind of cell structure of controlling the girder vortex-induced vibration of split type steel box girder bridge beam comprises grid and grid bracing frame; Its grid is fixed in the upper surface of grid bracing frame, is positioned at the top of the central slot of split type steel case beam; The end face of cell structure is concordant with the end face of split type steel case beam, and its periphery is fixed on the steel case beam and the connection horizontal beam sides of split type steel case beam; Cell structure breaks off at the connection crossbeam place of split type steel case beam along vertical layout of bridge, and the length of vertical layout area is 1/2～1 times of bridge main span length; The air permeability rate of cell structure is 40%～80%.
Described cell structure, the material of its grid are steel or glass fiber reinforced plastics; The material of grid bracing frame is steel.
Firmly be connected through welding or bolt between the described cell structure, its said grid and grid bracing frame; Firmly be connected through welding or bolt between the steel case beam of cell structure and split type steel case beam and the connection horizontal beam sides.
Described cell structure, the layout form of its said grid are " well " font; The layout form of grid bracing frame is " well " font or " rice " font, and its cross-sectional form is I-shaped or rectangle.
The present invention is directed to the some shortcomings that exist in the girder vortex-induced vibration control measure of existing split type steel box girder bridge beam; Air through change split type steel case beam at the central slot place of split type steel case beam installation cell structure streams form; Suppress the vortex that produced when air flows through split type steel case beam; Thereby it is effectively control the vortex-induced vibration of split type steel case beam, and simple in structure, easy for installation and economic performance is good.
Description of drawings
Fig. 1 the present invention controls the cell structure sketch map of the girder vortex-induced vibration of split type steel box girder bridge beam;
Fig. 2 the present invention controls the cell structure of the girder vortex-induced vibration of split type steel box girder bridge beam and vertically arranges sketch map along bridge;
Fig. 3 a, Fig. 3 b are correlation sketch map between the grid of cell structure of the present invention and the grid bracing frame;
Fig. 4 " well " of the present invention font grid support frame structure sketch map;
Fig. 5 " rice " of the present invention font grid support frame structure sketch map.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further description.
See Fig. 1～5, for the present invention controls the cell structure of the girder vortex-induced vibration of split type steel box girder bridge beam, to control the amplitude of split type steel box girder bridge beam girder vortex-induced vibration.Wherein: cell structure 1; Grid 2; Grid bracing frame 3; Split type steel case beam 4; Central slot 5; Steel case beam 6; Connect crossbeam 7; Bridge 8; The length A of cell structure; The width B of cell structure; The height h of grid
1The height h of grid bracing frame
2Cell structure layout area length L 1; Bridge main span length L.
The length of cell structure 1 is that A, width are that B, air permeability rate are 40%～80%; It is installed in the top of the central slot 5 of split type steel case beam 4; Its end face is concordant with the end face of split type steel case beam 4, the steel case beam 6 that its periphery is fixed on split type steel case beam be connected crossbeam 7 on.Cell structure 1 breaks off at connection crossbeam 7 places of split type steel case beam 4 along vertical layout of bridge 8, and layout area length L 1 is 1/2～1 times of bridge 8 main span length L.
The present invention can suppress the vortex that produced when air flows through split type steel case beam, thereby effectively controls the vortex-induced vibration of split type steel case beam, and simple in structure, easy for installation and economic performance is good.
Claims (4)
1. the cell structure (1) of the girder vortex-induced vibration of the split type steel box girder bridge beam of control comprises grid (2) and grid bracing frame (3); It is characterized in that: grid (2) is fixed in the upper surface of grid bracing frame (3), is positioned at the top of the central slot (5) of split type steel case beam (4); The end face of cell structure (1) is concordant with the end face of split type steel case beam (4), the steel case beam (6) that its periphery is fixed on split type steel case beam be connected crossbeam (7) side; Cell structure (1) is located to break off at the connection crossbeam (7) of split type steel case beam (4) along vertical layout of bridge (8), and the length of vertical layout area is 1/2～1 times of bridge (8) main span length; The air permeability rate of cell structure (1) is 40%～80%.
2. cell structure according to claim 1 (1) is characterized in that: the material of grid (2) is steel or glass fiber reinforced plastics; The material of grid bracing frame (3) is steel.
3. cell structure according to claim 1 (1) is characterized in that: firmly be connected through welding or bolt between said grid (2) and the grid bracing frame (3); The steel case beam (6) of cell structure (1) and split type steel case beam and being connected between crossbeam (7) side firmly connects through welding or bolt.
4. cell structure according to claim 1 (1) is characterized in that: the layout form of said grid (2) is " well " font; The layout form of grid bracing frame (3) is " well " font or " rice " font, and its cross-sectional form is I-shaped or rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910093762 CN102031749B (en) | 2009-09-28 | 2009-09-28 | Grid structure for controlling girder induced vibration of split steel box girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910093762 CN102031749B (en) | 2009-09-28 | 2009-09-28 | Grid structure for controlling girder induced vibration of split steel box girder bridge |
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| Publication Number | Publication Date |
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| CN102031749A CN102031749A (en) | 2011-04-27 |
| CN102031749B true CN102031749B (en) | 2012-06-27 |
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| CN 200910093762 Active CN102031749B (en) | 2009-09-28 | 2009-09-28 | Grid structure for controlling girder induced vibration of split steel box girder bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103452036B (en) * | 2013-09-18 | 2015-05-27 | 中交公路长大桥建设国家工程研究中心有限公司 | Split streamline steel-concrete composite box girder |
| CN104631306B (en) * | 2014-12-31 | 2017-02-01 | 邓芳 | Air guide device and manufacturing and assembling method thereof |
| CN104695319B (en) * | 2015-01-15 | 2016-08-17 | 邢台路桥交通设施有限公司 | Steel stealth bent cap and installation method thereof |
| CN106758774B (en) * | 2016-12-22 | 2019-03-29 | 西南交通大学 | A kind of suppression whirlpool grid device for the vibration control of wide cut Separated Twin-box Girder bridge whirlpool |
| CN107558354B (en) * | 2017-09-22 | 2023-07-18 | 中交公路长大桥建设国家工程研究中心有限公司 | Four-main-truss split-type plate truss and box truss combined main beam provided with tuyere |
| CN108842599B (en) * | 2018-07-16 | 2019-10-01 | 同济大学 | One kind being based on bionic pneumatic drag reduction device and bridge |
| CN109024242B (en) * | 2018-08-07 | 2019-10-01 | 同济大学 | A kind of bridge whirlpool vibration control and generating integrated device |
| RU191408U1 (en) * | 2018-11-27 | 2019-08-05 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" (КазГАСУ) | SPAN STRUCTURE OF A CURTAIN BRIDGE |
| CN110644350B (en) * | 2019-08-23 | 2020-12-29 | 深圳大学 | Bridge movable pneumatic measure device based on inertial volume vibration reduction and control method thereof |
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| JP2003027414A (en) * | 2001-07-16 | 2003-01-29 | Nkk Corp | Wind resisting bridge |
| CN101050623A (en) * | 2006-04-03 | 2007-10-10 | 同济大学 | Arch bridge vortex vibration control building membrane structure for arch bridge |
| CN101260646A (en) * | 2008-04-14 | 2008-09-10 | 李有为 | Great span bridge lower damper system for wind and water resistance |
| CN201534954U (en) * | 2009-09-28 | 2010-07-28 | 中交公路规划设计院有限公司 | Grate structure for controlling vortex-induced vibration of girder of split-type steel box girder bridge |
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2009
- 2009-09-28 CN CN 200910093762 patent/CN102031749B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003027414A (en) * | 2001-07-16 | 2003-01-29 | Nkk Corp | Wind resisting bridge |
| CN101050623A (en) * | 2006-04-03 | 2007-10-10 | 同济大学 | Arch bridge vortex vibration control building membrane structure for arch bridge |
| CN101260646A (en) * | 2008-04-14 | 2008-09-10 | 李有为 | Great span bridge lower damper system for wind and water resistance |
| CN201534954U (en) * | 2009-09-28 | 2010-07-28 | 中交公路规划设计院有限公司 | Grate structure for controlling vortex-induced vibration of girder of split-type steel box girder bridge |
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| CN102031749A (en) | 2011-04-27 |
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Effective date of registration: 20210906 Address after: 100088 CCCC building, 85 Deshengmenwai street, Xicheng District, Beijing Patentee after: CCCC Highway Consultants Co.,Ltd. Patentee after: CCCC HIGHWAY BRIDGES NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd. Address before: No. 85, Deshengmenwai street, Xicheng District, Beijing 100010 Patentee before: CCCC Highway Consultants Co.,Ltd. |
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