CN105220615B - A kind of vibration absorber for suppressing large-span suspension bridge suspension rod wind-induced vibration - Google Patents
A kind of vibration absorber for suppressing large-span suspension bridge suspension rod wind-induced vibration Download PDFInfo
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- CN105220615B CN105220615B CN201510586367.0A CN201510586367A CN105220615B CN 105220615 B CN105220615 B CN 105220615B CN 201510586367 A CN201510586367 A CN 201510586367A CN 105220615 B CN105220615 B CN 105220615B
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- suspension rod
- lazy halyard
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- vibration
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Abstract
It is a lazy halyard net system being arranged on suspension bridge suspension rod (2) the invention discloses a kind of vibration absorber for suppressing large-span suspension bridge suspension rod wind-induced vibration；The lazy halyard net system is several lazy halyards (1) network structure arranged in a crossed manner, and the lazy halyard (1) and the angle of suspension rod (2) are 30~70 degree；In the join domain (8) of lazy halyard and suspension rod, lazy halyard (1) is with suspension rod (2) by being fixedly connected positioned at two second attachment means (10) of suspension rod (2) both sides, two lazy halyards positioned at two the second attachment means (10) both sides with the rubber sheet gasket being provided between the connection intermediate plate (81) and lazy halyard of suspension rod and the connection intermediate plate (81) of suspension rod and suspension rod (2) with bolt.The attachment structure of the present invention is simple, and with the advantage for installing, safeguarding easy construction, cable body can be easily changed during use.
Description
Technical field
The invention belongs to engineering structure technical field, it is related to a kind of vibration damping for suppressing large-span suspension bridge suspension rod wind-induced vibration
Device.
Background technology
Under strong wind weather, overlength suspension bridge suspension rod is possible under wind action occur all kinds of vibrations.Because suspension rod is long
Degree is big, and spacing is small, it is possible to cause the mutual damaged in collision of suspension rod.Only occur in that some are short outstanding in being used for foreign countries at home at present
The parallel lazy halyard net damping system of cable bridge, the suspension rod vibration suppression dress for the cross-border overlength suspension rod system of overlength is not seen
Put.
Current oscillation damping method mainly includes installing damping unit, using separation design or uses disturbance-proof design.Using
The damper of installation can in structural vibration absorbing structure energy, be mainly used in oblique suspension rod vibration damping, Vehicle damper, industrial work
The fields such as journey.Separate design, to reach the purpose of vibration damping, is mainly used in all kinds of anti-earthquake magnitudes mainly by structure and focus segregation ratio
Other higher foundation engineering.Disturbance-proof design is mainly used in reducing wind-induced vibration, and air-flow and rain streamline are upset by certain design
Deng upsetting air-flow power to reach the purpose of vibration damping.Damping unit can be divided into liquid condenser again according to resisting medium is different, Gu
Body damper and air energy damper.It can be automatically adjusted according to damping size and be divided into active control damper and passive control
Damper.Current vibration damping patent concentrates on damper, vibration damping holder and flow spoiler.Such as：A kind of comprehensive eddy-current damping and rub
Wipe the oblique suspension rod pendulum-type lever mass vibration insulating system (patent No. of damping：CN201320373071.7), a kind of vibration damping holder (patent
Number：CN201420090732.X), the restraining device (patent No. of a kind of power transmission line steel tube pole tower vortex-induced wind vibration：
CN200920222688.2), the Research Literature on damper technique has examination of the MR damper to oblique suspension rod effectiveness in vibration suppression
Test research (《Vibration engineering journal》- 2004 years 1 phases), it is considered to bridge floor motion oblique suspension rod damping model (《Shenzhen University's journal
(science and engineering version)》- 2010 years 4 phases) etc..
The traditional oscillation damping method of suspension rod parallel for large-span suspension bridge is not too much practical.First, suspension rod is generally vertically
Arrangement, traditional damper can not be installed, and traditional damper vibration damping effect can only adapt to the oblique suspension rod of moderate-length, to up to the present
Can overlength suspension rod be applicable to be discussed afterwards.Suspension rod vibration main cause be wind excitation, there is no at present method by suspension rod with
External wind environment separation, so separate design can not be used.Flow-disturbing design on current bridge vibrates this mainly in wind and rain
Class vibration mode, and suspension rod vibration has diversified forms, it is impossible to rely solely on a kind of flow-disturbing this mode and suppressed.
The content of the invention
For the defect of prior art, large-span suspension bridge suspension rod wind-induced vibration is suppressed it is an object of the invention to provide one kind
Vibration absorber, scattered suspension rod can be linked to be entirety, increase suspension rod system integral rigidity, it is effective to reduce suspension rod amplitude,
So as to improve suspension rod service life.
To achieve these goals, technical scheme is as follows：
It is a kind of suppress large-span suspension bridge suspension rod wind-induced vibration vibration absorber, be one be arranged on it is auxiliary on suspension bridge suspension rod
Help rope net system；The lazy halyard net system is several lazy halyards network structure arranged in a crossed manner.
The angle of the lazy halyard and suspension rod is 30~70 degree.
The two ends of the lazy halyard are provided with screw thread.
The material of the lazy halyard uses memory alloy wire or high-damping steel wire.
The distance between two neighboring lazy halyard is 3~5 times of two neighboring suspension rod spacing；Specific spacing should be according to locality
Go over 20 years air speed datas and calculated in weather station.
Air viscous damper is arranged at intervals with the lazy halyard.
In the join domain of lazy halyard and suspension rod, lazy halyard and suspension rod positioned at two second of suspension rod both sides by being connected
Device, the connection intermediate plate of two lazy halyards positioned at two the second attachment means both sides and suspension rod and the company of lazy halyard and suspension rod
The rubber sheet gasket being provided between intermediate plate and suspension rod is connect to be fixedly connected with bolt.
In the join domain of lazy halyard and main push-towing rope, one end of lazy halyard is with main push-towing rope by the second attachment means, positioned at the
Two lazy halyards of two attachment means both sides and the connection intermediate plate of main push-towing rope are connected, and the connection intermediate plate other end of lazy halyard and main push-towing rope leads to
Two bolts are crossed to be fastened on main push-towing rope.
The lazy halyard and suspension rod connection intermediate plate and the lazy halyard and main push-towing rope connection intermediate plate be provided be used for through
The screwed hole of bolt.
The material of second attachment means is iron block, lead, elastomeric material or high-damping endurance material.
Second attachment means are provided with tapped through hole and screw thread half-via, and the tapped through hole is arranged on the second connection
The front of device, the screw thread half-via is arranged on the bottom of the second attachment means, and the tapped through hole passes through bolt and main push-towing rope
Connection intermediate plate or connected with the connection intermediate plate of suspension rod, the screw thread of lazy halyard end is connected with screw thread half-via.
In the join domain of lazy halyard and bridge tower, between lazy halyard and bridge tower by the connect base of lazy halyard and bridge tower and
First attachment means are connected, and fluid viscous damper is provided with first attachment means.
In the join domain of lazy halyard and steel box-girder, the connection bottom that lazy halyard and steel box-girder pass through lazy halyard and steel box-girder
Seat and the connection of the first attachment means, first attachment means are provided with fluid viscous damper.
The bridge tower, the steel girder box are provided with the hole for being used for connecting the first attachment means.
Due to using above-mentioned technical proposal, the present invention has advantages below and beneficial effect：
The present invention reduces the drift of long suspension rod by the connection of lazy halyard, suspension rod is connected with each other integral, carries
The high generalized mass of the integral rigidity of rope net system and each first order mode, makes suspension rod be intercoupled when vibrating between each mode, so that
Effectively suppress to hang vibration of bar.
The lazy halyard net system of the present invention need not reserve any device on suspension rod in advance, facilitate the later stage to add, can root
Factually lazy halyard is locally encrypted border operation situation, changes big damping material, reaches suppression suspension rod local vibration is excessive and ask
Topic.
The connection intermediate plate of middle hanger and lazy halyard of the present invention inherently includes air damper function, has suppression for some
Suspension rod vibrates demand and need not add big cross-border suspension bridge in lazy halyard net system, can be used alone on suspension rod.
Lazy halyard cable body uses memorial alloy wire material in the present invention, with the excellent spy such as shape memory function and super-elasticity
Property, bigger internal damping can be provided to rope net, effectively suppress vibration of the suspension rod caused by under extraneous various excitations, while
External force effect is lower to produce moderate finite deformation, it is to avoid the hardness impact injury that cord clip is brought to suspension rod or main push-towing rope；Can root on lazy halyard
According to needs, one or more air viscous dampers are installed additional, increase cable net structure damping suppresses the vibration of rope net.
Connector in the present invention between lazy halyard and suspension rod includes the first attachment means and the second attachment means, the second connection
Device as needed, can use iron block, lead, elastomeric material or other Novel high-damping endurance materials, the net resistance of increase rope
Buddhist nun's property；Lazy halyard is with that in bridge tower, the first attachment means of steel box-girder, can introduce fluid viscous damper, can be active
Fluid viscous damper or passive fluid viscous damper, dramatically increase the damping of rope net.
The first attachment means are used for lazy halyard and bridge tower, the connection of steel box-girder in the present invention, are adapted to a wide range of adjustment auxiliary
Suo Changdu, the second attachment means are used for lazy halyard and suspension rod, the connection of main push-towing rope, are adapted to fine setting lazy halyard length.
Connection intermediate plate has adjustment Suo Li function in the lazy halyard net system of the present invention, it is ensured that lazy halyard cable body is in length
Phase has enough tension force during runing.
The attachment structure of the present invention is simple, during use can easily more with the advantage for installing, safeguarding easy construction
Change cable body.
Brief description of the drawings
Fig. 1 is the structural representation of the vibration absorber of the suppression large-span suspension bridge suspension rod wind-induced vibration of the embodiment of the present invention
Figure.
Fig. 2 is the structural representation of lazy halyard.
Fig. 3 is the structural representation of the first attachment means.
Fig. 4 is the structural representation of the second attachment means.
Fig. 5 is the structural representation that lazy halyard is connected with bridge tower.
Fig. 6 is lazy halyard and the side view of main push-towing rope attachment structure.
Fig. 7 is lazy halyard and the front view of main push-towing rope attachment structure.
Fig. 8 is lazy halyard and the side view of suspension rod attachment structure.
Fig. 9 is lazy halyard and the top view of suspension rod attachment structure.
Figure 10 is the structural representation that lazy halyard is connected with steel box-girder.
Wherein：1 is lazy halyard, and 2 be suspension rod, and 3 be main push-towing rope, and 4 be bridge tower, and 5 be steel box-girder, the connection of 6 lazy halyards and main push-towing rope
Region, 7 be the join domain of lazy halyard and bridge tower, and 8 be the join domain of lazy halyard and suspension rod, and 9 be lazy halyard and steel box-girder
Join domain, 10 be the second attachment means, and 101 be tapped through hole, and 102 be screw thread half-via, and 11 be the first attachment means, 111
It is air viscous damper for fluid viscous damper, 12,13 be screw thread, and 61 be the connection intermediate plate of lazy halyard and main push-towing rope, and 71 are
The connect base of lazy halyard and bridge tower, 81 be the connection intermediate plate of lazy halyard and suspension rod, and 91 be the connection bottom of lazy halyard and steel box-girder
Seat.
Embodiment
The present invention is further detailed explanation for illustrated embodiment below in conjunction with the accompanying drawings.
Embodiment 1
As shown in figure 1, Fig. 1 is the vibration absorber of the suppression large-span suspension bridge suspension rod wind-induced vibration of the embodiment of the present invention
Structural representation.A kind of vibration absorber for suppressing large-span suspension bridge suspension rod wind-induced vibration, is one to be arranged on suspension bridge suspension rod 2
Lazy halyard net system；Lazy halyard net system is auxiliary in several lazy halyards 1 network structure arranged in a crossed manner, lazy halyard net system
Help between rope 1 across.
As shown in Fig. 2 Fig. 2 is the structural representation of lazy halyard.The angle of lazy halyard 1 and suspension rod 2 is 30~70 degree, auxiliary
The two ends of rope 1 are provided with screw thread 13, and the end thread 13 of lazy halyard 1 is screwed in the second attachment means 10, and precession depth is true as needed
It is fixed.The material of lazy halyard 1 uses memory alloy wire or high-damping steel wire.The distance between two neighboring lazy halyard 1 is between suspension rod 2
Away from 3~5 times；Specific spacing should go over 20 years air speed datas according to local weather station and be calculated, interval setting on lazy halyard 1
There is air viscous damper 12.
As shown in Figure 8 and Figure 9, Fig. 8 is lazy halyard and the side view of suspension rod attachment structure, and Fig. 9 is that lazy halyard connects with suspension rod
The top view of binding structure.In the join domain 8 of lazy halyard and suspension rod, lazy halyard 1 passes through positioned at the both sides of suspension rod 2 with suspension rod 2
The connection intermediate plate 81 of two the second attachment means 10, two lazy halyards positioned at two both sides of the second attachment means 10 and suspension rod with
And the rubber sheet gasket being provided between lazy halyard and connection intermediate plate 81 and the suspension rod 2 of suspension rod is fixedly connected with bolt.Second connection dress
Put 10 structure as shown in figure 4, Fig. 4 be the second attachment means structural representation.On the connection intermediate plate 81 of lazy halyard and suspension rod
Provided with for the screwed hole through bolt, the connection intermediate plate 81 itself of lazy halyard and suspension rod carries the function of air damper, energy
Increase cable net structure damping.
As shown in Figure 6 and Figure 7, Fig. 6 is lazy halyard and the side view of main push-towing rope attachment structure, and Fig. 7 is that lazy halyard connects with main push-towing rope
The front view of binding structure.In the join domain 6 of lazy halyard and main push-towing rope, one end of lazy halyard 1 is connected dress with main push-towing rope 3 by second
The connection intermediate plate 61 for putting 10, two lazy halyards positioned at the both sides of the second attachment means 10 and main push-towing rope is connected.Lazy halyard and main push-towing rope
Connecting intermediate plate 61 and being provided with is used for the screwed hole through bolt.The material of second attachment means 10 can be iron block or lead,
Can be elastomeric material or high-damping endurance material.It is logical provided with tapped through hole 101 and screw thread half in the second attachment means 10
Hole 102, tapped through hole 101 is arranged on the front of the second attachment means 10, and screw thread half-via 102 is arranged on the second attachment means 10
Bottom, tapped through hole 101 connects by the connection intermediate plate 61 of bolt and main push-towing rope or with the connection intermediate plate 81 of suspension rod, lazy halyard 1
The screw thread 13 of end is connected with screw thread half-via 102.Because being single bolt, the second attachment means 10 can be in bolt plane inward turning
Turn, eliminate Moment.The other end of connection intermediate plate 61 of lazy halyard and main push-towing rope is fastened on main push-towing rope 3 by two bolts, and second
Attachment means 10 are in the rotation with surface of main push-towing rope 3.
As shown in figure 5, Fig. 5 is the structural representation that lazy halyard is connected with bridge tower.In the join domain 7 of lazy halyard and bridge tower
It is interior, connected between lazy halyard 1 and bridge tower 4 by the attachment means 11 of connect base 71 and first of lazy halyard and bridge tower, (Fig. 3 is
The structural representation of one attachment means.) connect, it is provided with fluid viscous damper 111 in the first attachment means 11.On bridge tower 4
Provided with the hole for connecting the first attachment means 11.First attachment means 11 can be realized in bridge tower 4 to the initial strain of lazy halyard 1
A wide range of regulation.
As shown in Figure 10, Figure 10 is the structural representation that lazy halyard is connected with steel box-girder.In the company of lazy halyard and steel box-girder
Connect in region 9, lazy halyard 1 and steel box-girder 5 are connected by the attachment means 11 of connect base 91 and first of lazy halyard and steel box-girder,
First attachment means 11 are provided with fluid viscous damper 111.Steel girder box 5, which is provided with, to be used to connect the first attachment means 11
Hole.First attachment means 11 can be realized to be adjusted on a large scale in steel girder box 5 to the initial strain of lazy halyard 1.
The device Life prediction of the present invention is more than 15 years.The present invention is connected suspension bridge suspension rod in the form of lazy halyard
For an entirety, the integral rigidity of suspension rod system is improved, increases the vibration frequency of suspension rod system, suppresses single and hangs vibration of bar；
It can be widely used on suspension bridge suspension rod and similar structures.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using this hair
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without passing through performing creative labour.Therefore, the invention is not restricted to implementation here
Example, those skilled in the art do not depart from improvement that scope made and change all should be according to the announcement of the present invention
Within protection scope of the present invention.
Claims (13)
1. a kind of vibration absorber for suppressing large-span suspension bridge suspension rod wind-induced vibration, it is characterised in that：Suspension bridge is arranged on for one
Lazy halyard net system on suspension rod (2)；The lazy halyard net system is several lazy halyards (1) network structure arranged in a crossed manner；
In the join domain (8) of lazy halyard and suspension rod, lazy halyard (1) and suspension rod (2) pass through positioned at two second of suspension rod (2) both sides
Attachment means (10), the connection intermediate plate (81) of two lazy halyards positioned at two the second attachment means (10) both sides and suspension rod and
The rubber sheet gasket being provided between lazy halyard and the connection intermediate plate (81) and suspension rod (2) of suspension rod is fixedly connected with bolt；Described second
Attachment means (10) are provided with tapped through hole (101) and screw thread half-via (102), and the tapped through hole (101) is arranged on second
The front of attachment means (10), the screw thread half-via (102) is arranged on the bottom of the second attachment means (10), and the screw thread leads to
Hole (101) is connected by the connection intermediate plate (61) of bolt and main push-towing rope or with the connection intermediate plate (81) of suspension rod, lazy halyard (1) end
Screw thread (13) is connected with screw thread half-via (102).
2. the vibration absorber according to claim 1 for suppressing large-span suspension bridge suspension rod wind-induced vibration, it is characterised in that：Institute
The angle for stating lazy halyard (1) and suspension rod (2) is 30~70 degree.
3. the vibration absorber according to claim 1 for suppressing large-span suspension bridge suspension rod wind-induced vibration, it is characterised in that：Institute
The two ends for stating lazy halyard (1) are provided with screw thread (13).
4. the vibration absorber according to claim 1 for suppressing large-span suspension bridge suspension rod wind-induced vibration, it is characterised in that：Institute
The material for stating lazy halyard (1) uses memory alloy wire or high-damping steel wire.
5. the vibration absorber according to claim 1 for suppressing large-span suspension bridge suspension rod wind-induced vibration, it is characterised in that：Phase
The distance between adjacent two lazy halyards (1) are 3~5 times of two neighboring suspension rod (2) spacing.
6. the vibration absorber according to claim 1 for suppressing large-span suspension bridge suspension rod wind-induced vibration, it is characterised in that：Institute
State and air viscous damper (12) is arranged at intervals with lazy halyard (1).
7. the vibration absorber according to claim 1 for suppressing large-span suspension bridge suspension rod wind-induced vibration, it is characterised in that：
In the join domain (6) of lazy halyard and main push-towing rope, one end of lazy halyard (1) with main push-towing rope (3) by the second attachment means (10), be located at
Two lazy halyards of the second attachment means (10) both sides and the connection intermediate plate (61) of main push-towing rope are connected, the connection clip of lazy halyard and main push-towing rope
Piece (61) other end is fastened on main push-towing rope (3) by two bolts.
8. the vibration absorber according to claim 7 for suppressing large-span suspension bridge suspension rod wind-induced vibration, it is characterised in that：Institute
The connection intermediate plate (61) for stating lazy halyard and main push-towing rope is provided with for the screwed hole through bolt.
9. the vibration absorber of the suppression large-span suspension bridge suspension rod wind-induced vibration according to claim 1 or 7, its feature exists
In：The material of second attachment means (10) is iron block, lead, elastomeric material or high-damping endurance material.
10. the vibration absorber according to claim 1 for suppressing large-span suspension bridge suspension rod wind-induced vibration, it is characterised in that：
In the join domain (7) of lazy halyard and bridge tower, pass through the connect base of lazy halyard and bridge tower between lazy halyard (1) and bridge tower (4)
(71) connected with the first attachment means (11), fluid viscous damper (111) is provided with first attachment means (11).
11. the vibration absorber according to claim 10 for suppressing large-span suspension bridge suspension rod wind-induced vibration, it is characterised in that：
The bridge tower (4) is provided with the hole for being used for connecting the first attachment means (11).
12. the vibration absorber according to claim 1 for suppressing large-span suspension bridge suspension rod wind-induced vibration, it is characterised in that：
In the join domain (9) of lazy halyard and steel box-girder, the connection that lazy halyard (1) and steel box-girder (5) pass through lazy halyard and steel box-girder
Base (91) and the first attachment means (11) connection, first attachment means (11) are provided with fluid viscous damper (111).
13. the vibration absorber according to claim 12 for suppressing large-span suspension bridge suspension rod wind-induced vibration, it is characterised in that：
The steel box-girder 5) it is provided with the hole for being used for connecting the first attachment means (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510586367.0A CN105220615B (en) | 2015-09-15 | 2015-09-15 | A kind of vibration absorber for suppressing large-span suspension bridge suspension rod wind-induced vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510586367.0A CN105220615B (en) | 2015-09-15 | 2015-09-15 | A kind of vibration absorber for suppressing large-span suspension bridge suspension rod wind-induced vibration |
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| Publication Number | Publication Date |
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| CN105220615A CN105220615A (en) | 2016-01-06 |
| CN105220615B true CN105220615B (en) | 2017-07-11 |
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| CN201510586367.0A Active CN105220615B (en) | 2015-09-15 | 2015-09-15 | A kind of vibration absorber for suppressing large-span suspension bridge suspension rod wind-induced vibration |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106368343B (en) * | 2016-11-15 | 2019-01-18 | 湖南科技大学 | A kind of sag damping rope |
| CN107657126B (en) * | 2017-09-30 | 2023-11-24 | 大连理工大学 | Annular cylinder tuning liquid damper for controlling vibration of long boom of large-span bridge and design method |
| CN108179694A (en) * | 2018-02-07 | 2018-06-19 | 大连理工大学 | A kind of flexible support structure of the aerial express occupation bridge of suspension type |
| CN111663428B (en) * | 2020-06-24 | 2022-01-04 | 中铁二院工程集团有限责任公司 | Negative inhaul cable suspension bridge |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0849215A (en) * | 1994-08-05 | 1996-02-20 | Sumitomo Heavy Ind Ltd | Cable structure of suspension bridge |
| JPH09111716A (en) * | 1995-10-16 | 1997-04-28 | Kawada Kogyo Kk | Suspension bridge eccentrically loading during storm |
| CN102277830B (en) * | 2011-04-21 | 2014-11-26 | 深圳大学 | Cable stayed bridge and vibration-reducing auxiliary cable device for same |
| CN203782570U (en) * | 2014-01-29 | 2014-08-20 | 江苏法尔胜缆索有限公司 | Network cable node device used for suspension bridge and sling network cable system applying same |
| CN103790111A (en) * | 2014-01-29 | 2014-05-14 | 江苏法尔胜缆索有限公司 | Cable net joint device for suspension bridge and hanging cable net system with device |
| CN103835236A (en) * | 2014-02-28 | 2014-06-04 | 华南理工大学 | Sling vibration reduction mechanism of large-span suspension bridge |
| CN104233962A (en) * | 2014-08-11 | 2014-12-24 | 王双其 | Method for reinforcing and strengthening main cable of suspension bridge |
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