CN207017162U - Cable-stayed bridge vibration-proof structure - Google Patents
Cable-stayed bridge vibration-proof structure Download PDFInfo
- Publication number
- CN207017162U CN207017162U CN201720411306.5U CN201720411306U CN207017162U CN 207017162 U CN207017162 U CN 207017162U CN 201720411306 U CN201720411306 U CN 201720411306U CN 207017162 U CN207017162 U CN 207017162U
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- drag
- line
- damper
- buried cylinder
- cable
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Abstract
The utility model discloses a kind of cable-stayed bridge vibration-proof structure, including beam body and drag-line, beam body is provided with pre-buried cylinder, drag-line is fixedly connected after stretching into pre-buried cylinder with beam body, elastic damping part is provided between drag-line and pre-buried cylinder, vibration damping built-in fitting is provided with beam body, the vibration damping built-in fitting is provided with damper, one end of the damper is connected with drag-line, the other end is connected with vibration damping built-in fitting, first through damper vibration damping when passing to lower end using the vibration that the beneficial effects of the utility model are drag-line upper ends, amplitude substantially reduces, then just passed in pre-buried cylinder after the secondary vibration damping of banding sleeve, and further through the shock-absorbing spring vibration damping in pre-buried cylinder, continuous damping effect highly significant three times, and when running into strong wind, extraneous windage can be very small through the influence to pre-buried cylinder directly out of pre-buried cylinder.
Description
Technical field
It the utility model is related to technical field of bridge construction, a kind of cable-stayed bridge vibration-proof structure of specific design.
Background technology
Cable-stayed bridge is also known as Cable stayed bridge, is a kind of bridge being directly pulled in girder with many drag-lines on bridge tower, is by pressure-bearing
Tower, tension rope and hold a kind of structural system that curved beam body combines.It is considered as the multispan that drag-line replaces buttress
Elastic support continuous beam.It can reduce moment of flexure in beam body, reduce building height, alleviate construction weight, save material.Tiltedly
Bridge is drawn mainly to be made up of Sarasota, girder, suspension cable.
Suspension cable self-vibration characteristic is that Large Span Bridges are unavoidable.Exciting force is the basic reason for making drag-line starting of oscillation, can
So that suspension cable is regarded as vibrational system, three kinds of situations have been summed up：Sarasota vibrational excitation Inclined Cable Vibration, case vibrational excitation are oblique
Inhaul cable vibration and natural perturbed force excitation Inclined Cable Vibration.An actually part of the suspension cable as whole bridge structure, shakes
Dynamic is exactly disturbance etc. as caused by natural wind, rain etc. because environment is to the perturbation action of structure at all.In theory due to drag-line
Moment receives the excitation of three of the above mode, it is possible to suppresses mutually, this is desired, but due to mainly due to wind shape
Into vortex, tower, rope and box beam is set to be excited starting of oscillation, when frequency is suitable with a few drag-line intrinsic frequencies, it may occur that resonance, even
Generation engineering disaster.
Utility model content
To solve above technical problem, the utility model provides a kind of cable-stayed bridge vibration-proof structure.
Technical scheme is as follows：A kind of cable-stayed bridge vibration-proof structure, including beam body and drag-line, its key are：In the beam body
Provided with pre-buried cylinder, the drag-line is fixedly connected after stretching into pre-buried cylinder with beam body, is subtracted between the drag-line and pre-buried cylinder provided with elasticity
Shake part, is provided with vibration damping built-in fitting in the beam body, the vibration damping built-in fitting is provided with damper, one end of the damper
It is connected with the drag-line, the other end is connected with the vibration damping built-in fitting.Stretched into using the lower end of above-mentioned technical proposal drag-line pre-buried
It is connected after cylinder with beam body, damper is provided between drag-line and the beam body of bridge, head behind lower end is passed in the vibration of drag-line upper end
Damper vibration damping is first passed through, further by the further vibration damping of elastic damping part in pre-buried cylinder, then passes to beam body
Vibrate very little, beam body is not easy to be excited starting of oscillation, stability, anti-fatigue performance etc. to greatly promote.
Above-mentioned vibration damping built-in fitting includes being embedded in the embedded board inside the beam body, and support is vertically provided with the embedded board
Post, described damper one end are hinged with the drag-line, and the other end is be hinged with the support column.Conveniently will using this scheme
Damper is arranged on from sleeve drag-line remotely, and effectiveness in vibration suppression is more preferable.
The upper end level of above-mentioned support column is equipped with damper connecting rod, and the both ends of the damper connecting rod pass the branch
Locking nut is connected with after dagger, the both ends of the damper connecting rod have been respectively articulated with the damper, the damping
The damper upper end at device connecting rod both ends is hinged with same clip, and the clip banding is on the drag-line.Using we
Case two forms firm triangular structure between damper and connecting rod.
Upper elastic damping part is shock-absorbing spring, the both ends inwall with the pre-buried cylinder and the drawing respectively of the shock-absorbing spring
Rope is fixedly connected.It can be digested and substantially reduced through shock-absorbing spring using the vibration of the design drag-line lower end.
The circumferential circular array shape of drag-line is provided with the shock-absorbing spring described in above-mentioned pre-buried cylinder interior edge.Using this design not
By drag-line amplitude direction how, there is corresponding shock-absorbing spring to play damping effect.
Protection tube is arranged with outside above-mentioned drag-line, the clip banding is on the protection tube, the lower end of the drag-line
Stretch into the pre-buried cylinder after passing the protective sleeve and be fixedly connected with the beam body, the top of the pre-buried cylinder is provided with hoop
Tight set cylinder, the lower nozzle of the banding sleeve are set in the tube port position of the pre-buried cylinder, and the barrel dliameter of the banding sleeve is along the drawing
The bearing of trend of rope is gradually reduced, and the upper nozzle banding of the banding sleeve is on the protection tube.Using this design banding
Sleeve reduces drag-line lower end banding, amplitude, plays a part of secondary vibration damping.
On the barrel of above-mentioned pre-buried cylinder circular array shape be provided with multiple windages decompression via, wind from the pre-buried cylinder windward
The windage decompression via in face passes after entering in the pre-buried cylinder from the windage decompression via of pre-buried cylinder lee face.Using this
When extraneous windage is larger, wind directly passes through from pre-buried cylinder, small to the resistance of pre-buried cylinder for design.
Angle between above-mentioned damper and the drag-line is 90 °.
Above-mentioned damper is MR damper.
Beneficial effect：First through vibration damping when passing to lower end using the vibration that the beneficial effects of the utility model are drag-line upper ends
Damper vibration damping, amplitude substantially reduce, and are then just passed in pre-buried cylinder after the secondary vibration damping of banding sleeve, and further through pre-buried
Shock-absorbing spring vibration damping in cylinder, continuous damping effect highly significant three times, and when running into strong wind, extraneous windage can be directly from pre-buried
It is very small through the influence to pre-buried cylinder in cylinder.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the mounting structure schematic diagram of damper；
Fig. 3 is the enlarged drawing in a portions in Fig. 1；
Fig. 4 is the structural representation of pre-buried cylinder and shock-absorbing spring.
Embodiment
With reference to embodiment and accompanying drawing, the utility model is described in further detail.
As Figure 1-4, a kind of cable-stayed bridge vibration-proof structure, including beam body 1 and drag-line 2, the beam body 1 are provided with pre-buried cylinder
3, the drag-line 2 is fixedly connected after stretching into pre-buried cylinder 3 with beam body 1, and elastic damping part is provided between the drag-line 2 and pre-buried cylinder 3,
Be provided with vibration damping built-in fitting in the beam body 1, the vibration damping built-in fitting is provided with damper 5, one end of the damper 5 and
The drag-line 2 is connected, and the other end is connected with the vibration damping built-in fitting.
The vibration damping built-in fitting includes being embedded in the embedded board 4 inside the beam body 1, and the embedded board 4 is steel plate, and this is pre-
Support column 6 is vertically welded with buried plate 4, described one end of damper 5 is be hinged with the drag-line 2, the other end and the support
Post 6 is hinged, and the upper end level of the support column 6 is equipped with damper connecting rod 7, and the both ends of the damper connecting rod 7 pass
Locking nut 8 is connected with after the support column 6, the both ends of the damper connecting rod 7 have been respectively articulated with the damper
5, the upper end of damper 5 at the both ends of damper connecting rod 7 is hinged with same clip 9, and the banding of clip 9 is in the drawing
On rope 2, the angle between the damper 5 and the drag-line 2 is 90 °, and the damper 5 is magnetorheological damping
Device, on the locking nut 8, the damper connecting rod 7 and junction between support column 6 and embedded board 4 are painted with ring respectively
Oxygen zinc rich paint.
The elastic damping part is shock-absorbing spring 11, the both ends of the shock-absorbing spring 11 inwall with the pre-buried cylinder 3 respectively
It is fixedly connected with the drag-line 2, it is preferable that the circumferential circular array shape of drag-line 2 described in the pre-buried interior edge of cylinder 3 is provided with described
Shock-absorbing spring 11, the drag-line 2 are arranged with protection tube 10 outside, and the banding of clip 9 is on the protection tube 10, the drawing
The lower end of rope 2 is stretched into the pre-buried cylinder 3 after passing the protective sleeve 10 and is fixedly connected with the beam body 1, described pre-buried
The top of cylinder 3 is provided with banding sleeve 12, and the lower nozzle of the banding sleeve 12 is set in the tube port position of the pre-buried cylinder 3, the hoop
Bearing of trend of the barrel dliameter of tight set cylinder 12 along the drag-line 2 is gradually reduced, and the upper nozzle banding of the banding sleeve 12 is described
On protection tube 10.
Circular array shape is provided with multiple windages decompression via 13 on the barrel of the pre-buried cylinder 3, and wind is from the pre-buried cylinder 3
The windage decompression via 13 of windward side depressurizes via 13 after interior into the pre-buried cylinder 3 from the windage of the pre-buried lee face of cylinder 3
Pass.
Finally it should be noted that foregoing description is only preferred embodiment of the present utility model, the common skill of this area
Art personnel on the premise of without prejudice to the utility model aims and claim, can make under enlightenment of the present utility model
Expression, such conversion are each fallen within the scope of protection of the utility model as multiple types.
Claims (9)
1. a kind of cable-stayed bridge vibration-proof structure, including beam body (1) and drag-line (2), it is characterised in that：The beam body (1) is provided with pre-
Bury cylinder (3), the drag-line (2) is stretched into pre-buried cylinder (3) and is fixedly connected afterwards with beam body (1), the drag-line (2) and pre-buried cylinder (3) it
Between be provided with elastic damping part, is provided with vibration damping built-in fitting in the beam body (1), the vibration damping built-in fitting is provided with damper (5),
One end of the damper (5) is connected with the drag-line (2), and the other end is connected with the vibration damping built-in fitting.
2. cable-stayed bridge vibration-proof structure according to claim 1, it is characterised in that：The vibration damping built-in fitting includes being embedded in institute
The internal embedded board (4) of beam body (1) is stated, support column (6), the damper (5) one are vertically provided with the embedded board (4)
End is be hinged with the drag-line (2), and the other end is be hinged with the support column (6).
3. cable-stayed bridge vibration-proof structure according to claim 2, it is characterised in that：The upper end level of the support column (6) is worn
Provided with damper connecting rod (7), the both ends of the damper connecting rod (7) are connected with locking nut after passing the support column (6)
(8), the both ends of the damper connecting rod (7) have been respectively articulated with the damper (5), the damper connecting rod (7)
Damper (5) upper end at both ends is hinged with same clip (9), and clip (9) banding is on the drag-line (2).
4. according to the cable-stayed bridge vibration-proof structure described in claim 1,2 or 3, it is characterised in that：The elastic damping part is vibration damping
Spring (11), the both ends of the shock-absorbing spring (11) are fixedly connected with the inwall and the drag-line (2) of the pre-buried cylinder (3) respectively.
5. cable-stayed bridge vibration-proof structure according to claim 4, it is characterised in that：Drag-line described in pre-buried cylinder (3) interior edge
(2) circumferential circular array shape is provided with the shock-absorbing spring (11).
6. cable-stayed bridge vibration-proof structure according to claim 3, it is characterised in that：Protective jacket is arranged with outside the drag-line (2)
Manage (10), for clip (9) banding on the protection tube (10), the lower end of the drag-line (2) passes the protective sleeve
(10) stretch into after in the pre-buried cylinder (3) and be fixedly connected with the beam body (1), the top of the pre-buried cylinder (3) is provided with banding
Sleeve (12), the lower nozzle of the banding sleeve (12) are set in the tube port position of the pre-buried cylinder (3), the banding sleeve (12)
Bearing of trend of the barrel dliameter along the drag-line (2) is gradually reduced, and the upper nozzle banding of the banding sleeve (12) is in the protective jacket
Manage on (10).
7. cable-stayed bridge vibration-proof structure according to claim 4, it is characterised in that：It is in ring on the barrel of the pre-buried cylinder (3)
Shape array-like is provided with multiple windages decompression via (13), and wind depressurizes via from the windage of pre-buried cylinder (3) windward side
(13) passed into the pre-buried cylinder (3) after interior from the windage decompression via (13) of pre-buried cylinder (3) lee face.
8. cable-stayed bridge vibration-proof structure according to claim 4, it is characterised in that：The damper (5) and the drawing
Angle between rope (2) is 90 °.
9. cable-stayed bridge vibration-proof structure according to claim 1, it is characterised in that：The damper (5) is magnetorheological
Damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720411306.5U CN207017162U (en) | 2017-04-18 | 2017-04-18 | Cable-stayed bridge vibration-proof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720411306.5U CN207017162U (en) | 2017-04-18 | 2017-04-18 | Cable-stayed bridge vibration-proof structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207017162U true CN207017162U (en) | 2018-02-16 |
Family
ID=61460601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720411306.5U Expired - Fee Related CN207017162U (en) | 2017-04-18 | 2017-04-18 | Cable-stayed bridge vibration-proof structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207017162U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080105A (en) * | 2019-04-04 | 2019-08-02 | 深圳大学 | Combined vibration-damping sheath drag-line |
| CN110409287A (en) * | 2018-04-26 | 2019-11-05 | 株式会社韩国桥梁 | Symmetrical hydraulic circuit drag-line damping unit and control method comprising spring-damper |
| CN110685212A (en) * | 2019-09-23 | 2020-01-14 | 同济大学 | External granule damping device of suspension cable |
| CN110804941A (en) * | 2019-11-20 | 2020-02-18 | 佛山科学技术学院 | Stay cable stretching anchoring anti-retraction device |
| CN111877159A (en) * | 2020-09-17 | 2020-11-03 | 何静 | Bridge stay cable damping mechanism |
| CN112012106A (en) * | 2020-09-15 | 2020-12-01 | 同济大学 | Flexible waterproof cover free from bridge inhaul cable vibration damage |
| CN114395948A (en) * | 2022-01-05 | 2022-04-26 | 北京九州一轨环境科技股份有限公司 | Tuned mass damper vibration reduction control device suitable for vibration reduction track |
-
2017
- 2017-04-18 CN CN201720411306.5U patent/CN207017162U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409287A (en) * | 2018-04-26 | 2019-11-05 | 株式会社韩国桥梁 | Symmetrical hydraulic circuit drag-line damping unit and control method comprising spring-damper |
| CN110080105A (en) * | 2019-04-04 | 2019-08-02 | 深圳大学 | Combined vibration-damping sheath drag-line |
| CN110685212A (en) * | 2019-09-23 | 2020-01-14 | 同济大学 | External granule damping device of suspension cable |
| CN110685212B (en) * | 2019-09-23 | 2020-07-28 | 同济大学 | External granule damping device of suspension cable |
| CN110804941A (en) * | 2019-11-20 | 2020-02-18 | 佛山科学技术学院 | Stay cable stretching anchoring anti-retraction device |
| CN112012106A (en) * | 2020-09-15 | 2020-12-01 | 同济大学 | Flexible waterproof cover free from bridge inhaul cable vibration damage |
| CN112012106B (en) * | 2020-09-15 | 2021-11-09 | 同济大学 | Flexible waterproof cover free from bridge inhaul cable vibration damage |
| CN111877159A (en) * | 2020-09-17 | 2020-11-03 | 何静 | Bridge stay cable damping mechanism |
| CN111877159B (en) * | 2020-09-17 | 2021-12-31 | 苏于水 | Bridge stay cable damping mechanism |
| CN114395948A (en) * | 2022-01-05 | 2022-04-26 | 北京九州一轨环境科技股份有限公司 | Tuned mass damper vibration reduction control device suitable for vibration reduction track |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180216 Termination date: 20180418 |