CN108505431A - A kind of mechanism improving Flutter Stability for Bridge - Google Patents
A kind of mechanism improving Flutter Stability for Bridge Download PDFInfo
- Publication number
- CN108505431A CN108505431A CN201810347074.0A CN201810347074A CN108505431A CN 108505431 A CN108505431 A CN 108505431A CN 201810347074 A CN201810347074 A CN 201810347074A CN 108505431 A CN108505431 A CN 108505431A
- Authority
- CN
- China
- Prior art keywords
- wing plate
- bridge
- holder
- flutter stability
- drag
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- 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
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Include the drag-line positioned at the movable wing plate of Stochastic FEM both sides and the power plant inside Stochastic FEM and connection the wing plate outer rim and the power plant the invention discloses a kind of mechanism improving Flutter Stability for Bridge；Holder is set between the wing plate and the box beam, the holder includes fixed part and telescopable portion, the fixed part is fixedly connected with the box beam, and the telescopable portion is fixedly connected with the wing plate, drives wing plate described in the cable control to rotate by the power plant.The present invention adjusts the posture of wing plate by power plant, Flutter Stability for Bridge can be improved well, on the other hand, the significantly rotation angle of wing plate and the telescopic nature of holder will all expand applicability of such aerodynamic Measures in terms of improving Flutter Stability for Bridge significantly.
Description
Technical field
The present invention relates to bridge technology fields, it particularly relates to a kind of wing plate that can improve Flutter Stability for Bridge.
Background technology
A kind of twisting vibration of diversity can occur under certain wind speed for bridge, and the vibration of this diversity is eventually led
The destruction of bridge structure is caused, this vibration is referred to as flutter.Wind speed when flutter takes place in bridge is known as critical wind speed of flutter, when
When actual wind speed is less than this critical wind velocity, flutter would not occur for bridge structure.Currently, improving bridge structure flutter stability
Method be mainly by certain measures come improve Bridge Flutter generation critical wind velocity, be broadly divided into three classes measure：Structure is arranged
It applies, that is, improves the torsion stiffness of bridge structure, reduce mass mement of inertia, to improve the torsion fundamental frequency of bridge structure
Improve critical wind speed of flutter；Mechanical measure, i.e., by the way that damper is arranged come dissipation energy, to press down in bridge structure specific position
The vibration of bridge structure processed；Aerodynamic Measures improve the aerodynamic configuration of bridge structure by certain measures, to improve bridge
Structural stability.In three classes measure, structural measure improves limitation to improving bridge structure flutter stability, mechanical measure
Improvement is preferable, but cost is high.For aerodynamic Measures due to low cost, effect is good and is widely used in the flutter of bridge structure
Control.
Current common Bridge Flutter control measure are aerodynamic Measures, such as tuyere, deflector, steadying plate etc., such as patent text
Offer (publication number：CN101892625A, CN206553911U), as shown in Figure 1, it discloses a kind of wind fin plates 1, with certain
Angle is fixed in bridge main body structure, the aeroperformance for improving bridge, improves flutter stability, that is to say, that related
The prior art is substantially on the certain position of bridge by welding or riveting or other fixed forms fix and wind deflector or are
Steadying plate, or referred to as wind fin plate, are usually fixed along the direction for carrying out wind, water conservancy diversion are carried out to air-flow, to improve flutter instability
Property, Wind-resistance of Bridges performance is improved, but the disadvantage is that these wind deflectors are all integrally fixed at the specific position of bridge, is passive control
Measure processed, restricted application can only be applicable under specific wind field, and only in wind levels, by bridge, (or other specific incline
Angle) when just show preferable air-flow guiding function, for various special wind existing for nature, these fixed measures
It is difficult to accomplish to improve the flutter stability of bridge in all cases, universality is poor, and this is mainly due to addition theretos
Relative position on bridge is fixed, cannot be adjusted according to incoming wind characteristic Real-time Feedback, bad adaptability.The present invention is carried
The wing plate of the Posable gone out can carry out the adjustment of posture according to the characteristic of incoming wind, and this adjustment, which expands wing plate and is used as, quivers
It shakes the applicability in stability contorting face.
Invention content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of mechanism improving Flutter Stability for Bridge, mesh is solved
It is poor that universality existing for the pneumatic structure of flutter stability is improved in preceding existing highway bridge structure, cannot be carried out according to the variation of wind direction
Adjustment, the problem of technique effect difference significantly improve the whole flutter stability of bridge structure, improve the service life of bridge, reduce
Risk.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs：Including being located at Stochastic FEM (10) two
The movable wing plate (11) of side and the power plant (15) positioned at Stochastic FEM (10) inside and connection wing plate (11) outer rim
With the drag-line (14) of the power plant (15)；Holder, the holder are set between the wing plate (11) and the box beam (10)
Including fixed part (12) and telescopable portion (13), the fixed part (12) is fixedly connected with the box beam (10), described
Telescopable portion (13) is fixedly connected with the wing plate (11), drives the drag-line (14) to control by the power plant (15)
Wing plate (11) rotation.
Further, the wing plate (11) is located at the box beam (10) both sides tuyere position, with beam body have it is scheduled away from
From.
Further, one end of the telescopable portion (13) of the holder by rotatably cut with scissors in the wing plate (11)
The heart connects, and the wing plate (11) can rotate around one end of the telescopable portion (13), and rotation angle is close to 180 °.
Further, the both ends of the wing plate (11) are both provided with the drag-line (14), wherein drag-line described in side (14)
The wing plate (11) is driven to rotate, drag-line (14) described in the other side makes the wing plate (11) restore reference attitude.
Further, the telescopable portion (13) of the holder is stretched back and forth adjusts the wing plate (11) and the box beam
(10) distance, the holder are fluid pressure type structure or electric structure or manual adjustment structure.
Further, box beam (10) the width 32.24cm, height 35cm, wing plate (11) the width 5cm, length
50cm, the bracket fixture portions point (12) long 5cm, the long 4cm of the telescopable portion (13).
(3) advantageous effect
The present invention provides a kind of mechanisms improving Flutter Stability for Bridge, have following advantageous effect：It is filled by power
The posture for setting adjustment wing plate, can improve Flutter Stability for Bridge well, on the other hand, the significantly rotation angle of wing plate,
And the telescopic nature of holder will all expand such aerodynamic Measures being applicable in terms of improving Flutter Stability for Bridge significantly
Property.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of structural schematic diagram for improving Flutter Stability for Bridge in the prior art；
Fig. 2 is the Bridge Sections figure of the mechanism according to the ... of the embodiment of the present invention for being arranged and being improved Flutter Stability for Bridge；
Fig. 3 is that the bridge box and beam segment of the mechanism according to the ... of the embodiment of the present invention for being arranged and being improved Flutter Stability for Bridge is bowed
View；
Fig. 4 is wing plate holder action schematic diagram according to the ... of the embodiment of the present invention；
Fig. 5 is wing plate holder action schematic diagram according to the ... of the embodiment of the present invention.
In figure：1 wind fin plate, 10 box beams, 11 wing plates, 12 bracket fixture portions point, 13 holder telescopable portions, 14 drag-lines, 15
Power plant.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained belong to what the present invention protected
Range.
Fig. 2 and Fig. 3 is the segment cross-section diagram and vertical view of box beam, by the movable of centrally located Stochastic FEM 10 and both sides
Wing plate 11 and the power plant 15 inside box beam 10 form, and are connected by the holder being spaced between wing plate 11 and box beam 10,
The holder includes the fixed part 12 being connect with box beam 10 and the telescopable portion 13 being connect with wing plate 11.11 width midway of wing plate
Place is connect by rotary hinge with holder.11 outer rim of wing plate passes through drag-line 14 and the power plant 15 inside box beam 10
It is connected.
Example model main body box beam 10 width 32.24cm, height 35cm, wing plate 11 width 5cm, length 50cm, holder are solid
Determine 12 long 5cm of part, 13 long 4cm of telescopable portion.
Operation principle：
Under calm condition, 11 face of wing plates on two sides keeps horizontal, and power plant 15 does not work, when blowing air over Bridge Sections
When, according to the characteristic of actual measurement incoming wind, cable movement is driven by power plant 15, to drive the rotation of wing plate 11 (as schemed
4), mitigate pneumatic load, reach mitigation bridge vibration, improve the purpose of flutter stability；On the other hand, it can artificially adjust
The length of holder telescopic section 13 optimizes 11 position of wing plate (such as Fig. 5), to raising Flutter Stability for Bridge by a larger margin.
1) rotation of wing plate
In Fig. 4,11 both sides of wing plate in left side have drag-line 14, the rope of side that can make under the drive of power plant 15
Wing plate 11 drives rope rotation, and rotational steps are close to 180 degree, and when blowing air over Bridge Sections, power plant 15 is according to wind characteristic
It is adjusted in real time, wing plate 11 is driven to rotate corresponding amplitude；The drag-line of the other side is the drag-line for having reset effect, can be made
Wing plate 11 restores posture originally.Two drag-lines 14 can make wing plate 11 has to move back and forth under the drive of power plant 15
Effect.
2) holder is flexible
In figure 5 it is possible to the length of artificial adjusting bracket telescopic segment changes the distance that wing plate 11 leaves main body box beam 10,
To preferably improve Flutter Stability for Bridge, the use scope of this aerodynamic Measures is expanded.
More than, it is merely preferred embodiments of the present invention, but scope of protection of the present invention is not limited thereto, it is any
Those familiar with the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its invents
Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of mechanism improving Flutter Stability for Bridge, it is characterised in that：Including being located at the movable of Stochastic FEM (10) both sides
Wing plate (11) and positioned at the internal power plant (15) of Stochastic FEM (10) and connection wing plate (11) outer rim and described dynamic
The drag-line (14) of power apparatus (15)；Holder is set between the wing plate (11) and the box beam (10), and the holder includes fixing
Partly (12) and telescopable portion (13), the fixed part (12) are fixedly connected with the box beam (10), the telescoping section
Divide (13) to be fixedly connected with the wing plate (11), passes through the power plant (15) and the drag-line (14) is driven to control the wing plate
(11) it rotates.
2. a kind of mechanism improving Flutter Stability for Bridge according to claim 1, it is characterised in that：The wing plate (11)
Positioned at the box beam (10) both sides tuyere position, there is scheduled distance with beam body.
3. a kind of mechanism improving Flutter Stability for Bridge according to claim 1, it is characterised in that：The holder can
One end of telescopic section (13) is connect by rotatably cutting with scissors with the wing plate (11) center, the wing plate (11) can around it is described can
One end of telescopic section (13) rotates, and rotation angle is close to 180 °.
4. a kind of mechanism improving Flutter Stability for Bridge according to claim 1, it is characterised in that：The wing plate (11)
Both ends be both provided with the drag-line (14), wherein drag-line described in side (14) drives wing plate (11) rotation, other side institute
Stating drag-line (14) makes the wing plate (11) restore reference attitude.
5. a kind of mechanism improving Flutter Stability for Bridge according to claim 1, it is characterised in that：The holder can
Telescopic section (13) stretches the adjustment wing plate (11) at a distance from the box beam (10) back and forth, and the holder is fluid pressure type structure
Or electric structure or manual adjustment structure.
6. a kind of mechanism improving Flutter Stability for Bridge according to claim 1, it is characterised in that：The box beam (10)
Width 32.24cm, height 35cm, wing plate (11) the width 5cm, length 50cm, the bracket fixture portions point (12) long 5cm,
The long 4cm of the telescopable portion (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810347074.0A CN108505431B (en) | 2018-04-17 | 2018-04-17 | A kind of mechanism improving Flutter Stability for Bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810347074.0A CN108505431B (en) | 2018-04-17 | 2018-04-17 | A kind of mechanism improving Flutter Stability for Bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108505431A true CN108505431A (en) | 2018-09-07 |
| CN108505431B CN108505431B (en) | 2019-05-17 |
Family
ID=63382717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810347074.0A Active CN108505431B (en) | 2018-04-17 | 2018-04-17 | A kind of mechanism improving Flutter Stability for Bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108505431B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468676A (en) * | 2019-08-26 | 2019-11-19 | 同济大学 | Bridge structure |
| CN111441234A (en) * | 2020-03-27 | 2020-07-24 | 中南大学 | Deformable air nozzle for inhibiting wind-induced vibration of bridge |
| CN112012094A (en) * | 2020-09-22 | 2020-12-01 | 同济大学 | Angle-adjustable flow restraining plate device suitable for bridge deck |
| CN112458882A (en) * | 2020-11-30 | 2021-03-09 | 大连理工大学 | Flexible device for controlling bridge vortex vibration |
| CN112942066A (en) * | 2021-01-12 | 2021-06-11 | 西南交通大学 | Mountain bridge wind-resistant stabilizing plate with adjustable form and installation method |
| CN113235387A (en) * | 2021-06-16 | 2021-08-10 | 重庆大学 | Three-degree-of-freedom active wing plate device for controlling multi-mode coupling flutter and bridge box girder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226946A (en) * | 1996-05-29 | 1999-08-25 | 通用电器马可尼有限公司 | Bridge stabilization |
| KR100319593B1 (en) * | 1999-04-22 | 2002-01-09 | 장승필 | A Passive Aerodynamics Control Apparatus for Bridge Flutter |
| JP2002266315A (en) * | 2001-03-07 | 2002-09-18 | Mitsubishi Heavy Ind Ltd | Bridge |
| CN102191747A (en) * | 2011-03-25 | 2011-09-21 | 中铁大桥勘测设计院有限公司 | Adaptive tuyere of steel box girder |
| CN106758774A (en) * | 2016-12-22 | 2017-05-31 | 西南交通大学 | A kind of suppression whirlpool grid device of control of being shaken for wide cut Separated Twin-box Girder bridge whirlpool |
| CN207003276U (en) * | 2017-07-19 | 2018-02-13 | 贵州理工学院 | A kind of bridge paravent being easily installed |
-
2018
- 2018-04-17 CN CN201810347074.0A patent/CN108505431B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226946A (en) * | 1996-05-29 | 1999-08-25 | 通用电器马可尼有限公司 | Bridge stabilization |
| KR100319593B1 (en) * | 1999-04-22 | 2002-01-09 | 장승필 | A Passive Aerodynamics Control Apparatus for Bridge Flutter |
| JP2002266315A (en) * | 2001-03-07 | 2002-09-18 | Mitsubishi Heavy Ind Ltd | Bridge |
| CN102191747A (en) * | 2011-03-25 | 2011-09-21 | 中铁大桥勘测设计院有限公司 | Adaptive tuyere of steel box girder |
| CN106758774A (en) * | 2016-12-22 | 2017-05-31 | 西南交通大学 | A kind of suppression whirlpool grid device of control of being shaken for wide cut Separated Twin-box Girder bridge whirlpool |
| CN207003276U (en) * | 2017-07-19 | 2018-02-13 | 贵州理工学院 | A kind of bridge paravent being easily installed |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110468676A (en) * | 2019-08-26 | 2019-11-19 | 同济大学 | Bridge structure |
| CN110468676B (en) * | 2019-08-26 | 2021-08-27 | 同济大学 | Bridge structure |
| CN111441234A (en) * | 2020-03-27 | 2020-07-24 | 中南大学 | Deformable air nozzle for inhibiting wind-induced vibration of bridge |
| CN111441234B (en) * | 2020-03-27 | 2021-04-20 | 中南大学 | Deformable air nozzle for inhibiting wind-induced vibration of bridge |
| CN112012094A (en) * | 2020-09-22 | 2020-12-01 | 同济大学 | Angle-adjustable flow restraining plate device suitable for bridge deck |
| CN112012094B (en) * | 2020-09-22 | 2021-12-07 | 同济大学 | Angle-adjustable flow restraining plate device suitable for bridge deck |
| CN112458882A (en) * | 2020-11-30 | 2021-03-09 | 大连理工大学 | Flexible device for controlling bridge vortex vibration |
| CN112942066A (en) * | 2021-01-12 | 2021-06-11 | 西南交通大学 | Mountain bridge wind-resistant stabilizing plate with adjustable form and installation method |
| CN113235387A (en) * | 2021-06-16 | 2021-08-10 | 重庆大学 | Three-degree-of-freedom active wing plate device for controlling multi-mode coupling flutter and bridge box girder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108505431B (en) | 2019-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108505431A (en) | A kind of mechanism improving Flutter Stability for Bridge | |
| CN108396636B (en) | A kind of central stabilizing mechanism improving Flutter Stability for Bridge | |
| EP0247139B1 (en) | Wind turbine system using a savonius-type rotor | |
| ES2704629T3 (en) | Wind turbine blade | |
| ES2326352B1 (en) | AEROGENERATOR SHOVEL WITH DEFLECTABLE ALERONS CONTROLLED BY CHANGES OF PRESSURE ON THE SURFACE. | |
| CA2710524C (en) | Wind turbine blade and assembly | |
| EP1891326A1 (en) | A blade with hinged blade tip | |
| WO2001002742A2 (en) | Rotor with a split rotor blade | |
| CN109153440B (en) | Aircraft with load-reducing wing-like elements | |
| US20180142673A1 (en) | Vertical axis wind turbine with automatic adjustment of blade angle based on centrifugal force | |
| CN109533316B (en) | But differential displacement paddle and helicopter rotor system | |
| US4142832A (en) | Fluid current motor | |
| CN108643019A (en) | A kind of Bridge Flutter and whirlpool shake integrated control unit and its control method | |
| CN106574603A (en) | Structure with rigid winglet adapted to traverse a fluid environment | |
| WO2015178788A1 (en) | Vertical-type wind-energy installation | |
| CN108517760B (en) | A kind of central stabilizing mechanism improving split type box beam flutter stability | |
| JP2011256862A (en) | Horizontal axis type wind power generator equipped with air channel | |
| DE102015113404A1 (en) | Multifunctional flap system to improve energy efficiency | |
| US20190024628A1 (en) | Wind turbine blade, tubular structure for wind turbine blade, wind turbine and wind-utilization monitoring method | |
| CN116848319A (en) | Pitch control wind turbine with blade connection members | |
| CN112458882A (en) | Flexible device for controlling bridge vortex vibration | |
| DE102015113347A1 (en) | Multifunctional flaps for improving energy efficiency and safety | |
| CN109185051B (en) | Wind turbine and vertical axis wind generating set | |
| Lu et al. | Hybrid nutation damper for controlling galloping power lines | |
| CN214271661U (en) | Flexible device for controlling vortex vibration of bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190507 Address after: No. 1239, Siping Road, Yangpu District, Shanghai Applicant after: Tongji University Address before: No. 1239, Siping Road, Yangpu District, Shanghai Applicant before: Tongji University Applicant before: Chongqing University |
|
| TA01 | Transfer of patent application right |