CN101824795B - Installation component of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device - Google Patents
Installation component of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device Download PDFInfo
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- CN101824795B CN101824795B CN2010101363131A CN201010136313A CN101824795B CN 101824795 B CN101824795 B CN 101824795B CN 2010101363131 A CN2010101363131 A CN 2010101363131A CN 201010136313 A CN201010136313 A CN 201010136313A CN 101824795 B CN101824795 B CN 101824795B
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Abstract
The invention discloses an installation component of a steel truss girder cable-stayed bridge inhibition vortex-induced vibration device, aiming to conveniently and fixedly install a guide plate on a steel truss girder and efficiently avoid adverse influences on a steel truss girder structure. The installation component is provided with buckling structures corresponding to flanges (30a, 30b) at both transverse ends of a lower chord bottom plate (30) of the steel truss girder. The invention adopts the buckling structures to fixedly install the guide plate on a lower chord bottom plate of the steel truss girder with convenient installation operation, and also enables the set position of the guide plate not to be restricted by the position of a steel truss girder beam; and by adopting a bar system connecting structure, compared with a plate type component, the invention can dramatically lighten the weight of the installation component without needing a hole or welding on the steel truss girder, therefore, the invention can efficiently avoid the adverse influences on the steel truss girder structure, can dramatically enhance the construction efficiency and lower the engineering cost and has convenient structure construction and later stage maintenance.
Description
Technical field
The present invention relates to a kind of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device is installed in the installation component on the steel truss girder lower chord.
Background technology
Cable stayed bridge is the main bridge type of LONG-SPAN RAILWAY bridge.Built up many Railway Cable-stayed Bridge abroad, as crossing over the dual-purpose cable stayed bridge of public railway of Denmark Oresund, main span reaches 490 meters; The heavy haul railway cable stayed bridge in savart river is crossed in the Federal Republic of Yugoslavia Belgrade city, and span is 254m; Japan's the 2,000 bent river railway bridge, 134 meters of main spans.Domestic independent LONG-SPAN RAILWAY service bridge is few; Line Hongsuihe River, Hunan and Guangxi bridge like span 96m is first Railway Cable-stayed Bridge of China, and the highway and railway bi-purpose cable-stayed bridge that has built up has Construction of Wuhu Changjiang River Bridge (312 meters of spans), the Wuhan Tian Xingzhou Yangtze Bridge (504 meters of main spans).
Under natural wind action, the incident wind-induced vibration phenomenon of Longspan Bridge comprises flutter, vortex-induced vibration, buffeting, static(al) unstability etc., and these wind-induced vibrations are related to construction, operation security and the comfort of bridge.At present, the vortex-induced vibration system that the case beam has been studied by the many countries scheme of shaking, major measure has: install tuyere, deflector, steadying plate additional, its effect is to make main beam section near streamlined, avoids or postpone the generation that whirlpool breaks away from.Wherein, Is the main technical measures that adopt along bridge to elongated layout deflector on edge, case beam bottom; Deflector is through installation component and welding of case beam or bolt, and installation component is generally steel plate (dull and stereotyped or cross section is the plate of angle steel, channel-section steel, I-shaped die).But these measures all are to the case beam, and are still blank at present for the inhibition vortex-induced vibration research of steel truss girder bridge.
Korea Spro family's a small bay in a river bridge is positioned on the sharp railway line in newly-built Chongqing; Near the Han Jia a small bay in a river of Fuling, cross over the Changjiang river; Be the important component part of Shanghai-Chinese-Rong's passenger traffic passage, the design speed per hour is the passenger-cargo conllinear railway bridge of 200km/h, will become the Railway Steel Truss girder stayed-cable bridge of span the biggest in the world after building up.This bridge master bridge is the two main truss cable stayed bridges of the two rope faces of double tower, strides the footpath and is combined as 81m+135m+432m+135m+81m, and girder adopts steel truss girder, the wide 18m of trusses, high 14m.For satisfying the requirement of railway operation safety property and stationarity, must suppress the steel truss girder vortex-induced vibration effectively.The applicant is that 201010134238.5 application for a patent for invention manual discloses a kind of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device at application number; It is included in symmetrically arranged two row deflectors below the and arranged on left and right sides steel truss girder lower chord bottom, and deflector is fixedly connected on the installation component on the steel truss girder beam body; Each is made up of said two row deflectors to the unit of section gap setting deflector along bridge the edge, and the plate mask of each unit deflector has the inclination angle that deflects down with respect to steel truss girder lower chord bottom surface.Because it is inconsistent that the deflector of segmentation setting makes the whirlpool of adjacent beams section take off frequency; Therefore can reduce or fully suppress the steel truss girder vortex-induced vibration greatly; Can effectively avoid the steel truss girder bridge construction and become the bridge stage, and satisfy the requirement of railway the driving stationarity owing to the safety issue that vortex-induced vibration caused.But, if the unit deflector in this invention adopts and the similar connected mode of case beam deflector, will there be following problem, the steel truss girder deadweight has bigger increase, and welding residual stress or bolt perforate etc. all can be given steel truss girder structure deleterious impact; The installing engineering amount is big, and construction is inconvenient, is unfavorable for improving efficiency of construction and reduces construction costs; Each unit deflector the restriction that the position will receive steel truss girder crossbeam position is set.Therefore, be necessary to research and develop the member that a kind of novel deflector is connected with lower chord.
Summary of the invention
Technical problem to be solved by this invention provides a kind of installation component of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device, can very easily deflector be fixedly mounted on the steel truss girder, and avoid effectively the steel truss girder structure is caused adverse effect.
The technical solution adopted for the present invention to solve the technical problems is: installation component of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device of the present invention; Deflector is fixed on the steel truss girder lower chord bottom, and it is characterized in that: said installation component has and the corresponding interface arrangment of steel truss girder lower chord base plate transverse ends flange; Said installation component is made up of lateral branch strut, the medial branch strut erect and the pull bar that is used for fixing its relative position, and the lower end of lateral branch strut, medial branch strut forms hingedly with deflector respectively, and two pin joints are certain distance along the deflector lateral separation; Said interface arrangment be separately positioned on lateral branch strut, medial branch strut upper end and with the suitable bayonet socket of steel truss girder lower chord base plate transverse ends flange.
The invention has the beneficial effects as follows, adopt interface arrangment that deflector is fixedly mounted on the steel truss girder lower chord base plate, fitting operation and makes the restriction that the position no longer receives steel truss girder crossbeam position that is provided with of deflector very easily; Adopt the leverage syndeton, comparing with plate-type component to alleviate the weight of installation component significantly, does not need on steel truss girder perforate or welds, and therefore can avoid effectively the steel truss girder structure is caused adverse effect; Can improve efficiency of construction significantly and reduce construction costs, structure construction, later stage maintenance are conveniently.
Description of drawings
This manual comprises following four width of cloth accompanying drawings:
Fig. 1 is the structural representation of inhibition vortex-induced vibration device installation component of the present invention;
Fig. 2 is the user mode sketch map of inhibition vortex-induced vibration device installation component of the present invention;
Fig. 3 is the enlarged diagram of local A among Fig. 2;
Fig. 4 is the enlarged diagram of local B among Fig. 2.
Component shown in the figure, position and pairing mark: lateral branch strut 11, draw-in groove 11a, medial branch strut 12, draw-in groove 12a, pull bar 13, deflector 20, connection hinge 21, connection hinge 22, steel truss girder lower chord base plate 30, flange 30a, flange 30b.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
With reference to Fig. 2; Installation component of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device of the present invention; Deflector 20 is fixed on the steel truss girder lower chord bottom, and said installation component has and steel truss girder lower chord base plate 30 transverse ends flange 30a, the corresponding interface arrangment of 30b.Adopt interface arrangment with on the deflector 20 fixed installation steel truss girder lower chord base plates 30; Fitting operation very easily; And make the restriction that the position no longer receives steel truss girder crossbeam position that is provided with of deflector 20; Can improve efficiency of construction significantly and reduce construction costs, structure construction, later stage maintenance are conveniently.
See figures.1.and.2; Said installation component is made up of lateral branch strut 11, the medial branch strut 12 erect and the pull bar 13 that is used for fixing its relative position; The lower end of lateral branch strut 11, medial branch strut 12 is hinged with deflector 20 formation respectively, and two pin joints are along deflector 20 lateral separation certain distances.With reference to Fig. 1 and Fig. 3, Fig. 4, said interface arrangment be separately positioned on lateral branch strut 11, medial branch strut 12 upper ends and with steel truss girder lower chord base plate 30 transverse ends flange 30a, suitable bayonet socket 11a, the 12a of 30b.Adopt the leverage syndeton, comparing with plate-type component to alleviate the weight of installation component significantly, does not need on steel truss girder perforate or welds, and therefore can avoid effectively the steel truss girder structure is caused adverse effect.
See figures.1.and.2; The effect of pull bar 13 is after outside support bar 11, the bayonet socket 11a of medial branch strut 12,12a snap in steel truss girder lower chord base plate 30 transverse ends flange 30a, 30b, and lateral branch strut 11, medial branch strut 12 are fixedly connected and fixing its relative position.For making the maximum effect of pull bar 13 performances, said pull bar 13 is positioned at the top of lateral branch strut 11, medial branch strut 12, and its two ends are connected with lateral branch strut 11, medial branch strut 12 respectively below bayonet socket 11a, 12a.Pull bar 13 can adopt multiple form of structure; Consider from farthest making things convenient for production, assembling and on-the-spot installation aspect; The two ends of said pull bar 13 preferably all have the thread segment of certain-length, form and removably connect through locking nut and lateral branch strut 11, medial branch strut 12 with this thread segment.
With reference to Fig. 1, the lateral separation is set with two connection hinges 21,22 on the said deflector 20, and the lower end of lateral branch strut 11, medial branch strut 12 is hinged on these two respectively and connects on the hinge 21,22.Connect hinge 21,22 for 12 1 groups although only show one group of lateral branch strut 11, medial branch strut among the figure, the installation that is understood that deflector 20 needs be connected with two groups to two groups of lateral branch struts 11, medial branch strut 12 at interval along bridge at least cuts with scissors 21,22.
Some principles of the above installation component of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device of the present invention that just explains through diagrams; Be not be to the present invention be confined to shown in described concrete structure and the scope of application in; So every the modify and equivalent that might be utilized, the claim that all belongs to the present invention and applied for.
Claims (4)
1. installation component of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device; Deflector (20) is fixed on the steel truss girder lower chord bottom, and it is characterized in that: said installation component has and the corresponding interface arrangment of steel truss girder lower chord base plate (30) transverse ends flange (30a, 30b); Said installation component is by lateral branch strut (11), the medial branch strut (12) erect and pull bar (13) formation that is used for fixing its relative position; The lower end of lateral branch strut (11), medial branch strut (12) forms hingedly with deflector (20) respectively, and two pin joints are certain distance along deflector (20) lateral separation; Said interface arrangment be separately positioned on lateral branch strut (11), medial branch strut (12) upper end and with the suitable bayonet socket (11a, 12a) of steel truss girder lower chord base plate (30) transverse ends flange (30a, 30b).
2. installation component of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device according to claim 1; It is characterized in that: said pull bar (13) is positioned at the top of lateral branch strut (11), medial branch strut (12), and its two ends are connected with lateral branch strut (11), medial branch strut (12) respectively in the below of bayonet socket (11a, 12a).
3. like the said installation component of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device of claim 2; It is characterized in that: the two ends of said pull bar (13) have the thread segment of certain-length, form and removably connect through locking nut and lateral branch strut (11), medial branch strut (12) with this thread segment.
4. like claim 1,2 or 3 said installation component of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device; It is characterized in that: said deflector (20) is gone up the lateral separation and is set with two connection hinges (21,22), and the lower end of lateral branch strut (11), medial branch strut (12) is hinged on these two respectively and connects on the hinge (21,22).
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| CN2010101363131A CN101824795B (en) | 2010-03-30 | 2010-03-30 | Installation component of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device |
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| CN2010101363131A CN101824795B (en) | 2010-03-30 | 2010-03-30 | Installation component of steel truss girder cable-stayed bridge inhibition vortex-induced vibration device |
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| CN101824795B true CN101824795B (en) | 2012-02-01 |
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| CN103821081B (en) * | 2014-03-18 | 2015-08-12 | 天津市市政工程设计研究院 | A kind of whirlpool for box section steel tower column shakes and galloping control device |
| CN111441245A (en) * | 2020-05-11 | 2020-07-24 | 山东省交通规划设计院有限公司 | Track system for additionally installing and overhauling truss car for concrete cable-stayed bridge and using method of track system |
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| CN201778285U (en) * | 2010-03-30 | 2011-03-30 | 中铁二院工程集团有限责任公司 | Mounting component of vortex-induced vibration suppression device for steel truss cable-stayed bridges |
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| JPH11264114A (en) * | 1998-03-17 | 1999-09-28 | Nkk Corp | Improving method of torsional attenuation of suspension bridge and suspension bridge |
| JP2001271311A (en) * | 2000-03-28 | 2001-10-05 | Nkk Corp | Plate girder bridge having excellent weather resistance |
| CN201292503Y (en) * | 2008-11-19 | 2009-08-19 | 中交公路规划设计院有限公司 | Pneumatic control apparatus for enhancing steel girder suspension bridge buffet stability |
| CN101608424A (en) * | 2009-07-07 | 2009-12-23 | 中铁大桥勘测设计院有限公司 | A kind of octahedral tank type steel purlin arc bridge boom |
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| CN201778285U (en) * | 2010-03-30 | 2011-03-30 | 中铁二院工程集团有限责任公司 | Mounting component of vortex-induced vibration suppression device for steel truss cable-stayed bridges |
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