CN108643019A - A kind of Bridge Flutter and whirlpool shake integrated control unit and its control method - Google Patents
A kind of Bridge Flutter and whirlpool shake integrated control unit and its control method Download PDFInfo
- Publication number
- CN108643019A CN108643019A CN201810659868.0A CN201810659868A CN108643019A CN 108643019 A CN108643019 A CN 108643019A CN 201810659868 A CN201810659868 A CN 201810659868A CN 108643019 A CN108643019 A CN 108643019A
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- box beam
- bridge
- lower cover
- whirlpool
- cover plates
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D1/00—Bridges in general
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- 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
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- Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
It shakes integrated control unit and its control method the invention discloses a kind of Bridge Flutter and whirlpool, the bridge main beam include two on the outside of symmetrical band tuyere polygon box beam, the control device includes scalable and rotation upper and lower cover plates and the power plant inside the box beam, the upper and lower cover plates is mounted on the inside of the split type box beam opposite face, and the upper and lower cover plates can be flexible relative to the polygon box beam and be rotated.Flutter cannot be controlled and the technical issues of whirlpool shakes simultaneously by solving present in current existing split type bridge structure, utilize scalable cover board, it can be adjusted according to the characteristic of incoming wind, this adjustment while ensure that the flutter stability of Longspan Bridge and whirlpool shake performance.
Description
Technical field
The present invention relates to bridge technology fields, shake with whirlpool it particularly relates to which one kind can improve split type box beam flutter
The integrated control unit and its control method of stability.
Background technology
1940, in gentle breeze, (strong gale, wind speed were about U.S.'s Tacoma bridge (Tacoma Narrows Bridge)
Twisting vibration 19m/s) being had never seen before this, i.e. bridge floor both sides periodically replace height fluctuations.With across
The relaxation of middle side main push-towing rope and sunpender junction cord clip, unexpected Main Bridge across half across road surface side started, cause lateral
Fierce twisting, another half across then also and then twisting.Later, Oscillation Amplitude constantly increases, and maximum twist amplitude reaches about 35 °
Afterwards, hoist cable is broken by root, and final bridge floor caves in.After event occurs, many world-renowned scholars have carried out point cause of accident
Analysis research, and extensive common recognition is obtained, caving in for Tacoma bridge is attributed to be turned round by the separation stream that wind-induced negative damping drives
Turn flutter.Since then, the Flutter Control research of Loads of Long-span Bridges becomes one of all Bridge Design persons the most concern.
Bridge Flutter is a kind of self-excitation diverging vibration of destructive, shows as the interaction between flow field and structure, draws
It plays torsional amplitudes constantly to increase, until wind is ruined.Mainly since vibrational structure can constantly absorb energy in the air of flowing,
And the energy is more than the energy that structural damping is dissipated in vibration.When air-flow passes through streamlined section, the flowing of air-flow
Speed mainly influences or changes the amplitude between streamlined section torsion and bending degree of freedom and phase relation, so as to cause
Coupled vibrations between different degree of freedom and pneumatic negative damping cause to twist and warp coupled flutter.When air-flow bypasses bluff section, gas
The flowing velocity of stream mainly influences or changes the amplitude and phase of bluff section torsional freedom movement, so as to cause torsion
Vibration and pneumatic negative damping, lead to torsional flutter.For practical Bridge Sections, between streamlined between bluff body, due to curved
The degree of participation of bent degree of freedom is different, and flutter modality is between torsional flutter and coupled flutter.
Vortex-induced vibration is Longspan Bridge has forced and self-excitation double properties non-destructives certainly what low wind speed was easily sent out
Amplitude limit wind-induced vibration phenomenon.Japan's Tokyo bay channel bridge (Trans-Tokyo Bay Bridge), Brazilian Rio Ni Tailuoyi are big
The big band bridge (Great East Belt Bridge) of bridge (Rio-Niteroi Bridge) and Denmark all once occurred serious
Curved whirlpool is erected to shake.Xihoumen Bridge under the orthogonal wind effect that wind speed interval is 9m/s~11m/s, is also sent out under low turbulent-flow conditions
Apparent vertical whirlpool has been given birth to shake phenomenon.Although vortex-induced vibration will not cause to dissipate as flutter or galloping, due to being low wind
The lower often incident vibration of speed, and amplitude is big is enough to influence traffic safety, in some instances it may even be possible to induce drag-line parameter resonance etc. other
The fatal aerodynamic instability problem of type.
Flutter stability and whirlpool for Longspan Bridge shake performance, China《Highway bridge wind force proofing design specification》(JTG/T
D60-01-2004) clear stipulaties：Within the service life of Bridge Design, in the maximum wind velocity that bridge location region is likely to occur
Under, the self-excitation diverging vibration of destructive should not occur for structure.The amplitude of structure non-destructive wind-induced vibration should meet traffic safety,
The requirement of structural fatigue and driving comfort level.The bridge structure of code requirement cannot be met for wind loading rating, specification it further provides that：
The wind loading rating of structure can be improved by aerodynamic Measures, structural measure and mechanical measure.
Generally by two, the symmetrical polygon box structure with tuyere forms split type box-beam structure in, more than two
There are spacing, two polygon box structures to be connected by transversary between the shape box structure of side.Split type box-beam structure is
A kind of important cableway platform Flutter Control measure, and be widely applied, Chinese Xihoumen Bridge (China first
Across main span 1650m), the AngChuan Zhou bridge (main span 1018m) in Hong Kong and Tsing Ma Bridge (main span 1377m) be exactly using this disconnected
Face form.Although the box beam section of this form has preferable flutter stability, due to the presence in gap between two box beams,
So that the flow field structure complex around box beam, Vortex Shedding characteristic significantly increases, to exacerbate girder vortex-induced vibration.
Currently, being roughly divided into two kinds for seperated box-beam structure main beam section vortex-induced vibration control measure：One is fixed
Aerodynamic Measures, the aerodynamic configuration by changing girder change its wind load born, can be applied to the additional of Longspan Bridge
The aerodynamic Measures of component form generally include：Longitudinal grid changes groove width, deflector.A kind of control as shown in Figure 1 is split type
The cell structure (Publication No. CN201534954U) of box beam vortex-induced vibration, is arranged at the top of the central slot of split type steel box-girder
Cell structure 1, cell structure 1 include the grid 2 welded together and grille frame 3, inhibit air stream by the cell structure
The vortex generated when split type steel box-girder is crossed, vortex-induced vibration is controlled.However, shake although the measure can effectively control whirlpool, it may
Can have an adverse effect to the Flutter Performance of split type box beam；Another is TMD, and the operation principle of TMD is by adjusting TMD
Quality, rigidity and the damping system of itself are by the energy transmission to TMD of structural vibration, to reach the mesh for weakening structural vibration
's.Fujino is directed to the vortex-induced vibration that Tokyo Bay bridge occurs, and develops a kind of TMD controls shaken for controlling the vertical whirlpool of box beam
Device, the control device achieve good control effect after being installed on real bridge.But for Excitations for Long Span Suspension bridge, often
The vortex-induced vibration under different modalities occurs, and TMD can only generally control the response of a certain first order mode, this feature will be limited seriously
Utilizations of the TMD in Excitations for Long Span Suspension bridge whirlpool shakes control.In addition TMD sole mass is heavier, and bridge can be undoubtedly significantly greatly increased in this
Vertical load.Currently, apply to bridge whirlpool shake control measure it is typically permanent, do not have controllability, it is difficult to accomplish
The whirlpool that bridge can be improved in all cases shakes performance, and universality is poor, and this is mainly due to addition theretos on bridge
Relative position is fixed, cannot be adjusted according to incoming wind characteristic Real-time Feedback, bad adaptability.In addition, for inhibiting whirlpool to shake
Aerodynamic Measures may have an adverse effect to structure Flutter Performance.
Invention content
(1) the technical issues of solving
In view of the deficiencies of the prior art, it shakes integrated control unit and its control the present invention provides a kind of Bridge Flutter and whirlpool
Method processed solves above-mentioned technical problem present in current existing split type bridge structure, utilizes scalable cover board, Ke Yigen
It is adjusted according to the characteristic of incoming wind, this adjustment while ensure that the flutter stability of Longspan Bridge and whirlpool shake performance.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs：A kind of Bridge Flutter and whirlpool shake one
Change control device, the bridge include two on the outside of symmetrical band tuyere polygon box beam, the control device packet
Scalable or rotation upper and lower cover plates and the power plant inside the box beam are included, the upper and lower cover plates is mounted on described point
The inside of body formula box beam opposite face, the upper and lower cover plates can be flexible relative to the polygon box beam or be rotated.
Further, the power plant drives the upper and lower cover plates flexible and rotation.
Further, sliding slot is set inside the polygon box beam, and the upper and lower cover plates is flexible to be arranged in the sliding slot.
Further, the upper and lower cover plates is according to wind conditions, different length of stretching, and maximum length is completely enclosed institute
Split type box beam is stated, the box beam is made to be integrally formed.
Further, further include a kind of control method for the integrated control unit that shakes using the Bridge Flutter and whirlpool, the party
Method includes：1, under normal conditions, the power plant does not work, and the upper and lower cover plates is retracted in the sliding slot；2, work as wind speed
Instrument monitor incoming wind enter whirlpool shake lock-in regime when, drive the upper cover plate and lower cover to move by the power plant,
The split type box beam zoarium is set to be integrally formed box beam.
Further, described according to come the difference of wind, the upper and lower cover plates can be controlled and be in different collapsing lengths, made
The box beam is in semi-closed state.
(3) advantageous effect
Scalable cover board proposed by the invention can be adjusted according to the characteristic of incoming wind, this to adjust while ensureing
The flutter stability of Longspan Bridge and whirlpool shake performance.
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 to improve bridge whirlpool in the prior art to shake a kind of structural schematic diagram of stability；
Fig. 2 is that Bridge Flutter according to the ... of the embodiment of the present invention and whirlpool shake the semiclosed shape of upper and lower cover plates of integrated control unit
State；
Fig. 3 is that Bridge Flutter according to the ... of the embodiment of the present invention and whirlpool shake the totally-enclosed shape of upper and lower cover plates of integrated control unit
State；
Fig. 4 be Bridge Flutter according to the ... of the embodiment of the present invention with whirlpool shake integrated control unit upper cover plate it is totally-enclosed, under
Cover board opening-wide state；
Fig. 5 is Bridge Flutter according to the ... of the embodiment of the present invention and the shake upper cover plate of integrated control unit of whirlpool opens wide, lower cover
Plate full closeding state；
Fig. 6 is that Bridge Flutter according to the ... of the embodiment of the present invention and whirlpool shake the full open state of upper and lower cover plates of integrated control unit
State.
In figure：1 cell structure, 2 grids, 3 grille frames.
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. 2-6 is provided with the split type box beam different conditions figure of upper and lower cover plates, and the bridge includes two along center line pair
The polygon box beam of tuyere on the outside of the band of title, the control device include scalable or rotation upper and lower cover plates and are located at the case
Power plant inside beam, the upper and lower cover plates are mounted on the inside of the split type box beam opposite face, the upper and lower cover plates energy
It stretches or rotates relative to the polygon box beam；The power plant drives the upper and lower cover plates flexible or rotation；It is described more
Sliding slot is set inside the shape box beam of side, and the upper and lower cover plates is flexible to be arranged in the sliding slot；The upper and lower cover plates is according to wind-force feelings
Condition, different length of stretching, maximum length are to completely enclose the split type box beam, and the box beam is made to be integrally formed.
Further, further include a kind of control method for the integrated control unit that shakes using the Bridge Flutter and whirlpool, the party
Method includes：1, under normal conditions, the power plant does not work, and the upper and lower cover plates is retracted in the sliding slot；2, work as wind speed
Instrument monitor incoming wind enter whirlpool shake lock-in regime when, drive the upper cover plate and lower cover to move by the power plant,
The split type box beam zoarium is set to be integrally formed box beam.
Further, described according to come the difference of wind, the upper and lower cover plates can be controlled and be in different collapsing lengths, made
The box beam is in semi-closed state.
Example model main body case beam width 48.78cm, height 5.04cm, upper and lower cover plates maximal tensility can close following table
Face.
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)
- The integrated control unit 1. a kind of Bridge Flutter and whirlpool shake, it is characterised in that：The bridge includes two symmetrical along center line Band on the outside of tuyere polygon box beam, the control device include it is scalable and rotation upper and lower cover plates and be located at the box beam Internal power plant, the upper and lower cover plates are mounted on the inside of the split type box beam opposite face, the upper and lower cover plates energy phase It stretches or rotates for the polygon box beam.
- The integrated control unit 2. a kind of Bridge Flutter according to claim 1 and whirlpool shake, it is characterised in that：The power Device drives the upper and lower cover plates flexible or rotation.
- The integrated control unit 3. a kind of Bridge Flutter according to claim 2 and whirlpool shake, it is characterised in that：It is described polygon Sliding slot is set inside shape box beam, and the upper and lower cover plates is flexible to be arranged in the sliding slot.
- The integrated control unit 4. a kind of Bridge Flutter according to claim 1 and whirlpool shake, it is characterised in that：Above and below described For cover board according to wind conditions, different length of stretching, maximum length is to completely enclose the split type box beam, make the box beam at It is integrated.
- 5. a kind of a kind of controlling party for the integrated control unit that shaken using claim 1-4 any Bridge Flutter and whirlpool Method, this method include：1, under normal conditions, the power plant does not work, and the upper and lower cover plates is retracted in the sliding slot；2、 When anemobiagraph monitor incoming wind enter whirlpool shake lock-in regime when, pass through the power plant and drive the upper cover plate and lower cover It is mobile, so that the split type box beam zoarium is integrally formed box beam.
- 6. according to the method described in claim 5, it is characterized in that：It is described according to come the difference of wind, can control it is described up and down Cover board is in different collapsing lengths, and the box beam is made to be in semiclosed or full closeding state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810659868.0A CN108643019B (en) | 2018-06-22 | 2018-06-22 | Bridge flutter and vortex vibration integrated control device and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810659868.0A CN108643019B (en) | 2018-06-22 | 2018-06-22 | Bridge flutter and vortex vibration integrated control device and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108643019A true CN108643019A (en) | 2018-10-12 |
| CN108643019B CN108643019B (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810659868.0A Active CN108643019B (en) | 2018-06-22 | 2018-06-22 | Bridge flutter and vortex vibration integrated control device and control method thereof |
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| Country | Link |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119031A (en) * | 2020-01-14 | 2020-05-08 | 中铁二院工程集团有限责任公司 | Device for inhibiting bridge flutter and using method thereof |
| CN112458882A (en) * | 2020-11-30 | 2021-03-09 | 大连理工大学 | Flexible device for controlling bridge vortex vibration |
| CN112900229A (en) * | 2021-01-14 | 2021-06-04 | 同济大学 | Split type case roof beam of adjustable intertroove ventilation rate |
| CN113235386A (en) * | 2021-05-26 | 2021-08-10 | 长安大学 | Device and method for inhibiting vortex vibration generated by separated double-box-girder section bridge |
| WO2022012001A1 (en) * | 2020-07-16 | 2022-01-20 | 重庆文理学院 | Bridge vortex-induced vibration control device |
| CN114197290A (en) * | 2021-12-29 | 2022-03-18 | 同济大学 | Vortex suppression device for split box girder bridge and split box girder bridge |
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| JP2004285753A (en) * | 2003-03-24 | 2004-10-14 | Public Works Research Institute | Bridge |
| CN201372406Y (en) * | 2009-02-19 | 2009-12-30 | 同济大学 | Guide plate device used for vortex vibration control of separative 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 |
| 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 |
| CN108035237A (en) * | 2017-12-31 | 2018-05-15 | 西南交通大学 | The wing plate system and its control method that a kind of suppression Bridge Flutter and whirlpool shake |
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2018
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004285753A (en) * | 2003-03-24 | 2004-10-14 | Public Works Research Institute | Bridge |
| CN201372406Y (en) * | 2009-02-19 | 2009-12-30 | 同济大学 | Guide plate device used for vortex vibration control of separative 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 |
| 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 |
| CN108035237A (en) * | 2017-12-31 | 2018-05-15 | 西南交通大学 | The wing plate system and its control method that a kind of suppression Bridge Flutter and whirlpool shake |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119031A (en) * | 2020-01-14 | 2020-05-08 | 中铁二院工程集团有限责任公司 | Device for inhibiting bridge flutter and using method thereof |
| WO2022012001A1 (en) * | 2020-07-16 | 2022-01-20 | 重庆文理学院 | Bridge vortex-induced vibration control device |
| CN112458882A (en) * | 2020-11-30 | 2021-03-09 | 大连理工大学 | Flexible device for controlling bridge vortex vibration |
| CN112900229A (en) * | 2021-01-14 | 2021-06-04 | 同济大学 | Split type case roof beam of adjustable intertroove ventilation rate |
| CN113235386A (en) * | 2021-05-26 | 2021-08-10 | 长安大学 | Device and method for inhibiting vortex vibration generated by separated double-box-girder section bridge |
| CN114197290A (en) * | 2021-12-29 | 2022-03-18 | 同济大学 | Vortex suppression device for split box girder bridge and split box girder bridge |
| CN114197290B (en) * | 2021-12-29 | 2023-02-03 | 同济大学 | Vortex suppression device for split box girder bridge and split box girder bridge |
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| Publication number | Publication date |
|---|---|
| CN108643019B (en) | 2020-03-27 |
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