CN201574356U - Viscous damping auxiliary cable device for cable-stayed bridge - Google Patents
Viscous damping auxiliary cable device for cable-stayed bridge Download PDFInfo
- Publication number
- CN201574356U CN201574356U CN2009202460343U CN200920246034U CN201574356U CN 201574356 U CN201574356 U CN 201574356U CN 2009202460343 U CN2009202460343 U CN 2009202460343U CN 200920246034 U CN200920246034 U CN 200920246034U CN 201574356 U CN201574356 U CN 201574356U
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- lazy halyard
- cable
- cuff
- stayed bridge
- viscous
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Abstract
The utility model relates to a viscous damping auxiliary cable device for a cable-stayed bridge, and belongs to the technical field of the wind and shock resistances and shock absorption of bridge projects. The device comprises auxiliary cables, hoops connected with external sleeves of main stayed cables, external hoops of the auxiliary cables, connecting bolt rods and connecting bolt hole pieces of the hoops connected with the external sleeves of the main stayed cables, viscous dampers, and connecting elements connecting the dampers and the auxiliary cables, wherein the two ends of each viscous damper are connected with the corresponding auxiliary cable and a main bridge beam respectively. The auxiliary cables are connected with the main cables of the cable-stayed bridge through the hoops and the bolt connecting pieces, so as to form a new cable net system to improve the dynamic characteristics and aerodynamic property of the stayed cables; the viscous dampers are capable of vibration reduction and energy dissipation when the auxiliary cables are deformed, thereby further reducing the vibration of the bridge and achieving the applicability particular for the energy-dissipating shock absorption in case of typhoons and strong shocks; and the device has the advantages of extremely low cost of materials, simple structure and remarkable effects.
Description
Technical field
The utility model relates to a kind of viscous vibration lazy halyard device that is used for cable stayed bridge, belongs to bridge engineering wind resistance and antidetonation and cushion technique field.
Background technology
Cable stayed bridge is the tower by pressure-bearing, the rope of tension and hold a kind of structural system that curved beam body combines.Because cable stayed bridge is bigger than the span ability of beam bridge, in bridge construction, be widely used, be the main bridge type of Longspan Bridge.Characteristics such as cable stayed bridge is a kind of self-anchoring system, and having does not need expensive earth anchor, and integral rigidity and wind resistance are good, but add its span ability greatly cantilever construction, cost is low and characteristics such as good looking appearance.But along with the continuous increase of cable stayed bridge span, it is more and more longer that suspension cable becomes.As the suspension cable of the main supporting member of cable stayed bridge, it is wide that it is flexible greatly, internal damping is low, intrinsic frequency distributes, and very easily vibrates under the beam tower displacement effect of wind, wind and rain and supported end.
Cable-stayed bridge cable cause the mechanism of shaking in a minute complexity.According to the difference of driving source, the main oscillatory type of suspension cable can be divided into two classes: a class is the Inclined Cable Vibration that wind or wind and rain acting in conjunction cause, the another kind of vibration that takes place under beam tower displacement effect for the suspension cable supported end.At present, Passive Control is to suppress the main means of Inclined Cable Vibration, and major measure comprises: change the suspension cable surface configuration to change the dynamic characteristics of rope; Set up the passive damping device at the rope close end.To the suspension cable on the cable stayed bridge, use viscoelastic damper to be control appliance usually, the more viscoelastic damper of domestic and international application has oil damper and efficient rubber cushion assembly at present.Yet the Passive Control Inclined Cable Vibration is not the optimal selection of Inclined Cable Vibration control, and the ratio that the control effect that studies show that Passive Control and damper are grown apart from bitter end portion distance and rope is relevant, and ratio is big more, and to control effect good more.Because the restriction of suspension cable present position is attractive in appearance for not influencing bridge, damper is restricted apart from bitter end portion distance and the long ratio of rope.Thereby for long rope, the vibration that can't provide enough dampings to come control cord probably, thus Passive Control was lost efficacy.So cheap, the diverse in function of development cost, respond well vibration absorber has great engineering significance.
The utility model content
The utility model proposes a kind of viscous vibration lazy halyard device that is used for cable stayed bridge, this device has characteristics such as effectiveness in vibration suppression with low cost, comprehensive is obvious.Bear under high wind and the geological process at cable stayed bridge, this device can be combined to form rope net system with main suspension cable, increases the damping of suspension cable, improve integral power performance and air force character, dissipation energy effectively, the vibration that alleviates bridge main body, thus guarantee the applicability and the safety of bridge.
To achieve these goals, the utility model has been taked following technical scheme.The utility model comprises lazy halyard, be connected in each tiltedly draws first cuff on the main rope outer sleeve, is fixed on and is used for second cuff and the viscous damper that lazy halyard passes on first cuff.Wherein: lazy halyard passes each second cuff successively and is serially connected in each and tiltedly draws between the main rope, and the one end is fixed on uppermost one and tiltedly draws on the main rope, and the other end is fixed on the cable-stayed bridge main-beam by viscous damper.Can slide second cuff and tiltedly draw relative deformation does not take place between the main rope outer sleeve between the lazy halyard and second cuff.
The diameter of described lazy halyard is for tiltedly drawing 0.2 to 0.5 times of main rope diameter, material with tiltedly draw main rope identical, the internal diameter of described second cuff is 1.0 to 1.2 times of lazy halyard diameter.
The structure of described first cuff is: two ring-like shaped steel of semicircle are fixed together by the bolt part, and the internal diameter of the ring-like shaped steel of semicircle is identical with the external diameter that tiltedly draws the main rope outer sleeve.
A lazy halyard links to each other with three skew cables serial connection at least, and lazy halyard and suspension cable intersecting angle are 70 degree～110 degree, are advisable with both square crossing efficient.
The displacement range of described viscous damper is more than or equal to ± 3cm.
Described lazy halyard need apply pretension when installing, and does not occur negative pulling force in the time of will guaranteeing tiltedly to draw the main rope vibration in principle in the lazy halyard.
Compared with prior art, the utlity model has following advantage:
1) the utility model links to each other the original part suspension cable of lazy halyard and cable stayed bridge, forms a new rope
The web frame system.On the one hand, thereby lazy halyard has reduced the frequency that the effective length of suspension cable has promoted drag-line, and on the other hand, rope net system has changed original bridge dynamic characteristic and air force character.
2) the lazy halyard vibration reducing measure is specially adapted to the overlength guy system of large span stayed-cable bridge, to suppressing parametric vibration and linear internal resonance in dividing effectively.
3) the utility model adopts viscous damper and lazy halyard with good characteristic to form the heavy damping device, has further strengthened the energy-dissipating property of utility model device, especially is fit to the energy-dissipating and shock-absorbing under hurricane and the severe earthquake action.
4) the material therefor cost is very low, does not have complicated structure, and effect is obvious.
Description of drawings
Fig. 1 lazy halyard and tiltedly draw annexation three-dimensional side view between the main rope;
Fig. 2 viscous damper lateral view;
Fig. 3 lazy halyard part is along the main rope cross-sectional view;
Fig. 4 lazy halyard cross section view
Fig. 5 viscous damper phantom;
The unitary side view that Fig. 6 the utility model is used on cable stayed bridge;
Among the figure: 1, lazy halyard, 2, first cuff, 3, second cuff, 4, first shank of bolt, 5, first bolt hole, 6, viscous damper, 7, connecting elements, 8, tiltedly draw main rope, 9, tiltedly draw the main rope outer sleeve, 10, piston rod, 11, the fixing termination of viscous damper, 12, sealing plate, 13, liquid silicone oil, 14, the piston head of band throttle orifice, 15, control valve, 16, regulate to support, 17, conditioning chamber, 18, outer wall cylindrical shell, 19, the cable stayed bridge king-tower, 20, cable-stayed bridge main-beam.
The specific embodiment
Describe the specific embodiment of the present utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 1, present embodiment mainly comprise lazy halyard 1, with first cuff 2 that tiltedly draws the main rope outer sleeve to link to each other, be fixed on and be used for second cuff 3 and the viscous damper 6 that lazy halyard passes on first cuff 2.Wherein: outer sleeve is enclosed within the outside of tiltedly drawing main rope, two ends with tiltedly draw the main rope end anchorage.Lazy halyard 1 passes each second cuff 3 successively and is serially connected in each and tiltedly draws between the main rope, the one end is fixed on uppermost one and tiltedly draws on the main rope, the other end links to each other with the piston rod of viscous damper by connecting elements 7, the fixedly termination 11 of viscous damper is anchored with cable-stayed bridge main-beam, as Fig. 2, shown in Figure 5.The displacement range of viscous damper must not be less than ± 3cm, and the viscous liquid of viscous damper 6 inside can be liquid-state silicon oil, mineral oil and lead etc.
On each first cuff 2, all be symmetrically fixed with two second cuffs 3, as shown in Figure 3, Figure 4, first cuff 2 with tiltedly draw main rope to be arranged vertically, second cuff 3 and first cuff 2 are arranged in parallel, and so just guarantee lazy halyard 1 and tiltedly draw between the main rope to be arranged vertically.First cuff 2 is two ring-like shaped steel of semicircle in the present embodiment, and semi-round ring shape shaped steel is provided with 5, two shaped steel in connecting bolt hole by first shank of bolt 4 and 5 butt joints of first bolt hole, will tiltedly draw main rope outer sleeve banding.Be weldingly connected with first cuff 2 that tiltedly draws the main rope outer sleeve to link to each other and outside second cuff 3 of lazy halyard simultaneously, thereby guarantee second cuff 2 and lazy halyard 1 compatible deformation.The internal diameter of the ring-like shaped steel of semicircle is identical with the external diameter that tiltedly draws the main rope outer sleeve in the present embodiment.
The mechanism of connecting elements 7 is: two ends also clamp with lazy halyard end and piston rod end anchoring respectively.
The lazy halyard diameter is for tiltedly drawing 0.35 times of main rope diameter in the present embodiment, material with tiltedly draw main rope consistent or similar.The internal diameter of the outside cuff of lazy halyard is 1.1 times of lazy halyard diameter.
As shown in Figure 6, a lazy halyard links to each other with three skew cables serial connection at least, and lazy halyard and suspension cable intersecting angle are that 85 degree are to 100 degree.
Suitably strain when lazy halyard is installed, do not occur negative pulling force in the time of should guaranteeing the main rope vibration in principle in the lazy halyard.
The mounting method of present embodiment is as follows:
At first, according to lazy halyard 1 concrete installation site, determine the length of lazy halyard 1, the performance parameter and the installation site of the cuff number, associated fitting number and the viscous damper 6 that link to each other with the outer sleeve 9 that tiltedly draws main rope.Principle is: a lazy halyard links to each other with three skew cables serial connection at least, and lazy halyard 1 is advisable with both square crossing efficient with suspension cable 8 intersecting angles.Secondly, according to along tiltedly drawing king-tower 19 direction from top to bottom, successively with second cuff 3 with lazy halyard 1 pierce into, banding.Afterwards, use with second cuff 2 that tiltedly draws the main rope outer sleeve to link to each other, connecting bolt bar 4, connecting bolt hole part 5 with lazy halyard 1 with tiltedly draw the outer sleeve 9 of main rope to couple together.Requirement guarantees that lazy halyard 1 and main suspension cable outer sleeve 9 are combined to form rope net system, guarantee both compatible deformations.Afterwards, lazy halyard 1 is linked to each other with the piston rod 10 of viscous damper by connecting elements 7 near girder one end, require lazy halyard is suitably applied pretension, do not occur negative pulling force in the time of should guaranteeing the main rope vibration in principle in the lazy halyard.With viscous damper 6 terminal and girder 20 anchorings, guarantee not take place relative deformation between the two at last.
Claims (7)
1. viscous vibration lazy halyard device that is used for cable stayed bridge is characterized in that: comprise lazy halyard (1), be connected in each and tiltedly draw outer all being fixed with of first cuff (2), each first cuff (2) on the main rope outer sleeve to be used for second cuff (3) and the viscous damper (6) that lazy halyard passes; Wherein: lazy halyard (1) passes second cuff (3) and is serially connected in each and tiltedly draws between the main rope, and an end of lazy halyard (1) is fixed on uppermost one and tiltedly draws on the main rope, and the other end is fixed on the cable-stayed bridge main-beam by viscous damper (6).
2. a kind of viscous vibration lazy halyard device that is used for cable stayed bridge according to claim 1 is characterized in that: all be symmetrically fixed with two second cuffs (3) on each first cuff (2).
3. according to claim 1 or the described a kind of viscous vibration lazy halyard device that is used for cable stayed bridge of claim 2, it is characterized in that: the diameter of described lazy halyard (1) is for tiltedly drawing 0.2 to 0.5 times of main rope diameter, material with tiltedly draw main rope identical, the internal diameter of described second cuff (3) is 1.0 to 1.2 times of lazy halyard (1) diameter.
4. according to claim 1 or the described a kind of viscous vibration lazy halyard device that is used for cable stayed bridge of claim 2, it is characterized in that: described first cuff (2) is fixedly formed by the bolt part by two ring-like shaped steel of semicircle, and the internal diameter of the ring-like shaped steel of semicircle is identical with the external diameter that tiltedly draws the main rope outer sleeve.
5. according to claim 1 or the described a kind of viscous vibration lazy halyard device that is used for cable stayed bridge of claim 2, it is characterized in that: a lazy halyard (1) links to each other with three skew cables serial connection at least, and lazy halyard (1) is 70 degree～110 degree with the suspension cable intersecting angle.
6. according to claim 1 or the described a kind of viscous vibration lazy halyard device that is used for cable stayed bridge of claim 2, it is characterized in that: the displacement range of described viscous damper (6) is more than or equal to ± 3cm.
7. according to claim 1 or the described a kind of viscous vibration lazy halyard device that is used for cable stayed bridge of claim 2, it is characterized in that: described lazy halyard (1) need apply pretension when installing, and does not occur negative pulling force in the time of will guaranteeing tiltedly to draw the main rope vibration in principle in the lazy halyard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202460343U CN201574356U (en) | 2009-09-25 | 2009-09-25 | Viscous damping auxiliary cable device for cable-stayed bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202460343U CN201574356U (en) | 2009-09-25 | 2009-09-25 | Viscous damping auxiliary cable device for cable-stayed bridge |
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| CN201574356U true CN201574356U (en) | 2010-09-08 |
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| CN2009202460343U Expired - Lifetime CN201574356U (en) | 2009-09-25 | 2009-09-25 | Viscous damping auxiliary cable device for cable-stayed bridge |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277830A (en) * | 2011-04-21 | 2011-12-14 | 深圳大学 | Cable stayed bridge and vibration-reducing auxiliary cable device for same |
| CN105220616A (en) * | 2015-09-15 | 2016-01-06 | 同济大学 | A kind of rope net damping system being used for oblique pull-suspension cable cooperation bridge |
| CN105765264A (en) * | 2013-10-23 | 2016-07-13 | 索列丹斯-弗莱西奈公司 | Device for damping vibrations in a cable |
| TWI548796B (en) * | 2013-12-30 | 2016-09-11 | Univ Chienkuo Technology | Oblique bridge cable vibration dampers |
| CN106284056A (en) * | 2016-08-31 | 2017-01-04 | 中国路桥工程有限责任公司 | Longspan Bridge elastoplasticity shock mitigation system |
| CN106320163A (en) * | 2016-08-31 | 2017-01-11 | 中国路桥工程有限责任公司 | Elastic-plastic damping cable for transverse damping of large-span bridge |
| CN109594463A (en) * | 2019-01-25 | 2019-04-09 | 中铁大桥科学研究院有限公司 | A kind of flexible impact damping unit and system applied to sling of suspension bridge |
| CN113685485A (en) * | 2021-09-07 | 2021-11-23 | 湖南科技大学 | Double-layer cantilever support self-anchored flexible tower mast structure vibration damping cable |
-
2009
- 2009-09-25 CN CN2009202460343U patent/CN201574356U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277830B (en) * | 2011-04-21 | 2014-11-26 | 深圳大学 | Cable stayed bridge and vibration-reducing auxiliary cable device for same |
| CN102277830A (en) * | 2011-04-21 | 2011-12-14 | 深圳大学 | Cable stayed bridge and vibration-reducing auxiliary cable device for same |
| CN105765264A (en) * | 2013-10-23 | 2016-07-13 | 索列丹斯-弗莱西奈公司 | Device for damping vibrations in a cable |
| CN105765264B (en) * | 2013-10-23 | 2018-01-12 | 索列丹斯-弗莱西奈公司 | Damp the device of rope vibrations |
| TWI548796B (en) * | 2013-12-30 | 2016-09-11 | Univ Chienkuo Technology | Oblique bridge cable vibration dampers |
| CN105220616B (en) * | 2015-09-15 | 2017-05-24 | 同济大学 | Cable net vibration reducing system for inclined pull-cable suspension cooperation bridge |
| CN105220616A (en) * | 2015-09-15 | 2016-01-06 | 同济大学 | A kind of rope net damping system being used for oblique pull-suspension cable cooperation bridge |
| CN106320163A (en) * | 2016-08-31 | 2017-01-11 | 中国路桥工程有限责任公司 | Elastic-plastic damping cable for transverse damping of large-span bridge |
| CN106320163B (en) * | 2016-08-31 | 2017-12-05 | 中国路桥工程有限责任公司 | A kind of elastoplasticity damping rope for Longspan Bridge horizontal shock-absorbing |
| CN106284056B (en) * | 2016-08-31 | 2017-12-05 | 中国路桥工程有限责任公司 | Longspan Bridge elastoplasticity shock mitigation system |
| CN106284056A (en) * | 2016-08-31 | 2017-01-04 | 中国路桥工程有限责任公司 | Longspan Bridge elastoplasticity shock mitigation system |
| CN109594463A (en) * | 2019-01-25 | 2019-04-09 | 中铁大桥科学研究院有限公司 | A kind of flexible impact damping unit and system applied to sling of suspension bridge |
| CN109594463B (en) * | 2019-01-25 | 2023-08-08 | 中铁大桥科学研究院有限公司 | Flexible collision damping device and system applied to suspension bridge sling |
| CN113685485A (en) * | 2021-09-07 | 2021-11-23 | 湖南科技大学 | Double-layer cantilever support self-anchored flexible tower mast structure vibration damping cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100908 Effective date of abandoning: 20090925 |