CN201534954U - Grate structure for controlling vortex-induced vibration of girder of split-type steel box girder bridge - Google Patents
Grate structure for controlling vortex-induced vibration of girder of split-type steel box girder bridge Download PDFInfo
- Publication number
- CN201534954U CN201534954U CN2009202231306U CN200920223130U CN201534954U CN 201534954 U CN201534954 U CN 201534954U CN 2009202231306 U CN2009202231306 U CN 2009202231306U CN 200920223130 U CN200920223130 U CN 200920223130U CN 201534954 U CN201534954 U CN 201534954U
- Authority
- CN
- China
- Prior art keywords
- type steel
- grate
- bridge
- split
- steel box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides a grate structure for controlling the vortex-induced vibration of a girder of a split-type steel box girder bridge, and relates to the bridge technology. The structure comprises a grate and a grate support frame, wherein the grate is arranged on the upper surface of the grate support frame; the grate and the grate support frame are fixed connected with each other in a welding or bolting manner and are arranged at the top of a slot formed in the center of the split-type steel box girder; the top surface of the grate is aligned with that of a split-type steel box girder; the periphery of the grate is fixed on a steel box girder and a connecting cross beam of the split-type steel box girder; the plan layout of the grate support frame takes the shape of the symbol '#'or the shape of the symbol '*'; the cross section of the grate support frame is I-shaped or rectangular; the grate structure is arranged longitudinally along the bridge and is disconnected at the connecting cross beam of the split-type steel box girder; the length of the arranged area is one second or one time of the length of the main span of the bridge; and the hollowed-out rate of the grate structure is 40 percent to 80 percent. The utility model can control vortex caused by air flowing through the split-type steel box girder, so as to effectively control the vortex-induced vibration of the split-type steel box girder; and the utility model further has the advantages of simple structure, convenient installation and good economical efficiency.
Description
Technical field
The utility model 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 class 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, as Zhoushan, Zhejiang Lian Dao engineering west watchtower in ancient times door bridge, AngChuan Zhou, Hong Kong bridge etc. as girder.
Studies show that for the bridge that adopts split type steel case beam as girder, the damping effect of ordinary circumstance chin spoiler 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 the structure construction complexity like this, and economic cost is higher.
The utility model content
The purpose of this utility model provides a kind of cell structure of controlling the girder vortex-induced vibration of split type steel box girder bridge beam, and 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 utility model 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, the steel case beam that its periphery is fixed on split type steel case beam be connected the crossbeam side; Cell structure disconnects 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 by welding or bolt between the described cell structure, its described grid and grid bracing frame; The steel case beam of cell structure and split type steel case beam and being connected between the crossbeam side firmly connects by welding or bolt.
Described cell structure, the layout form of its described 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 some shortcomings that exist in the girder vortex-induced vibration control measure of the utility model at existing split type steel box girder bridge beam, stream form by the air that changes split type steel case beam at the central slot place of split type steel case beam installation cell structure, 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 utility model is controlled the cell structure schematic diagram of the girder vortex-induced vibration of split type steel box girder bridge beam;
Fig. 2 the utility model is controlled the cell structure of the girder vortex-induced vibration of split type steel box girder bridge beam and is vertically arranged schematic diagram along bridge;
Correlation schematic diagram between the grid of Fig. 3 a, Fig. 3 b the utility model cell structure and the grid bracing frame;
Fig. 4 " well " of the present utility model font grid support frame structure schematic diagram;
Fig. 5 " rice " of the present utility model font grid support frame structure schematic diagram.
The specific embodiment
The utility model will be further described below in conjunction with accompanying drawing.
See Fig. 1～5, for the utility model is controlled 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.
Cell structure 1 comprises grid 2 and grid bracing frame 3.The height of grid 2 is h
1(h
1=0.04～0.4m), air permeability rate is 30%～90%, and its material can be steel, glass fiber reinforced plastics (Fiberglass-Reinforced Plastics) or other composite material.The height of grid bracing frame 3 is h
2(h
2=0.4～2.0m), its layout form can be " well " font or " rice " font, and its cross-sectional form can be I-shaped or rectangle, and its material is steel.Grid 2 is closely connected above grid bracing frame 3, firmly connects by welding or bolt between the two.
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 disconnects 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 utility model 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 disconnect 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 by welding or bolt between described 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 by welding or bolt.
4. cell structure according to claim 1 (1) is characterized in that: the layout form of described 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 |
|---|---|---|---|
| CN2009202231306U CN201534954U (en) | 2009-09-28 | 2009-09-28 | Grate structure for controlling vortex-induced vibration of girder of split-type steel box girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202231306U CN201534954U (en) | 2009-09-28 | 2009-09-28 | Grate structure for controlling vortex-induced vibration of girder of split-type steel box girder bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201534954U true CN201534954U (en) | 2010-07-28 |
Family
ID=42534735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202231306U Expired - Lifetime CN201534954U (en) | 2009-09-28 | 2009-09-28 | Grate structure for controlling vortex-induced vibration of girder of split-type steel box girder bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201534954U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505627A (en) * | 2011-11-03 | 2012-06-20 | 哈尔滨工业大学 | Suppression separation type box girder vortex induced vibration control system |
| CN102031749B (en) * | 2009-09-28 | 2012-06-27 | 中交公路规划设计院有限公司 | Grid structure for controlling girder induced vibration of split steel box girder bridge |
| CN103276661A (en) * | 2013-05-21 | 2013-09-04 | 浙江诚骏建设工程有限公司 | Steel box girder of assembly structure |
| CN107090768A (en) * | 2017-06-15 | 2017-08-25 | 哈尔滨工业大学 | Bridge structure box girder Self inhaling is from blowing vibration absorber |
-
2009
- 2009-09-28 CN CN2009202231306U patent/CN201534954U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031749B (en) * | 2009-09-28 | 2012-06-27 | 中交公路规划设计院有限公司 | Grid structure for controlling girder induced vibration of split steel box girder bridge |
| CN102505627A (en) * | 2011-11-03 | 2012-06-20 | 哈尔滨工业大学 | Suppression separation type box girder vortex induced vibration control system |
| CN102505627B (en) * | 2011-11-03 | 2013-12-04 | 哈尔滨工业大学 | Suppression separation type box girder vortex induced vibration control system |
| CN103276661A (en) * | 2013-05-21 | 2013-09-04 | 浙江诚骏建设工程有限公司 | Steel box girder of assembly structure |
| CN107090768A (en) * | 2017-06-15 | 2017-08-25 | 哈尔滨工业大学 | Bridge structure box girder Self inhaling is from blowing vibration absorber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102031749B (en) | Grid structure for controlling girder induced vibration of split steel box girder bridge | |
| CN104562920B (en) | The damping energy-dissipating device that a kind of bridge direction across bridge disk spring combines with dynamic damping | |
| CN103452036B (en) | Split streamline steel-concrete composite box girder | |
| CN201534954U (en) | Grate structure for controlling vortex-induced vibration of girder of split-type steel box girder bridge | |
| CN203688194U (en) | Angle of wind deflection conversion device for large-span bridge wind tunnel testing | |
| CN203639800U (en) | Split streamline steel-concrete composite box girder | |
| CN104404894A (en) | High-speed rail bridge wind shielding structure wind shielding plate | |
| CN203559354U (en) | Stay cable anchoring structure applied to prestressed concrete partially cable-stayed bridge | |
| CN201225026Y (en) | Wind-proof dust-suppressing net | |
| CN202519577U (en) | Bridge cable earthquake-reducing limiter | |
| CN203923929U (en) | Road traffic paravent | |
| CN101967801A (en) | Wind-break wall of high speed railway | |
| CN203977609U (en) | A kind of energy consumer stage by stage | |
| CN110820609A (en) | Roof beam canopy integration dangerous rock rockfall protection shed tunnel | |
| CN102776845A (en) | Socket type wind shielding device of composite structure | |
| CN104652644A (en) | Connecting beam energy consumption device | |
| CN205188795U (en) | Keep natural large -span belt conveyor landing stage that overflows form of coombe | |
| CN101594095A (en) | A kind of wire-rope net structural solar farm | |
| CN103590505A (en) | Honeycomb-type steel plate damper | |
| CN207079602U (en) | A kind of Simple assembled slope protecting device | |
| CN110042745A (en) | Antidetonation bridge pier component | |
| CN202718446U (en) | Novel combined steel pipe pole | |
| CN204435202U (en) | The damping energy-dissipating device that a kind of bridge direction across bridge disk spring and dynamic damping combine | |
| CN202440963U (en) | Assembly type energy consumption supporting device for buckling restrained bending resisting structure | |
| CN201372598Y (en) | Super-high voltage transmission tower with reinforced concrete structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100728 Effective date of abandoning: 20090928 |