CN207210939U - Cable-stayed bridge vibration absorber - Google Patents
Cable-stayed bridge vibration absorber Download PDFInfo
- Publication number
- CN207210939U CN207210939U CN201720408744.6U CN201720408744U CN207210939U CN 207210939 U CN207210939 U CN 207210939U CN 201720408744 U CN201720408744 U CN 201720408744U CN 207210939 U CN207210939 U CN 207210939U
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- drag
- line
- beam body
- steel
- damping
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Abstract
The utility model discloses a kind of cable-stayed bridge vibration absorber, including beam body and drag-line, beam body is provided with built-in fitting, drag-line is fixedly mounted in beam body by built-in fitting, damping assembly is provided between drag-line and beam body, damping assembly one end is connected with the drag-line, the other end is connected with beam body, it is that the built-in fitting of stay guy is embedded with beam body using the beneficial effects of the utility model, directly drag-line is fixed on built-in fitting when drag-line is installed, it is fixed conveniently, damping ring banding is on drag-line, and oscillation crosswise is delivered on vibration damping steel wire rope by drag-line, reduce the vibration frequency and amplitude of drag-line, prevent resonance harm, it can still retain even if the damping assembly (is mounted with damper) after construction terminates and continue to play a role.
Description
Technical field
It the utility model is related to technical field of bridge construction, and in particular to a kind of cable-stayed bridge vibration absorber.
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, if
When suspension cable damps very little, resonance amplitude can be very big, is more harm than good so to the construction stage (not installing damper).
Utility model content
To solve above technical problem, the utility model provides a kind of cable-stayed bridge vibration absorber.
Technical scheme is as follows：A kind of cable-stayed bridge vibration absorber, including beam body and drag-line, its key are：In the beam body
Provided with built-in fitting, the drag-line is fixedly mounted in the beam body by the built-in fitting, is set between the drag-line and the beam body
There is damping assembly, the damping assembly one end is connected with the drag-line, and the other end is connected with the beam body.Using above-mentioned technical proposal
The built-in fitting of stay guy is embedded with beam body, directly drag-line is fixed on built-in fitting when drag-line is installed, is fixed conveniently,
It will be tensed by damping assembly between drag-line and beam body, reduce the vibration frequency and amplitude of drag-line, prevent resonance harm, should
It can still retain even if damping assembly (is mounted with damper) after construction terminates and continue to play a role.
As preferred：Above-mentioned damping assembly includes damping ring and draws anchor, and the damping ring is solidly set on the drag-line, described
Draw anchor to be fixedly mounted in the beam body, be fixedly connected between the damping ring and drawing anchor by vibration damping steel wire rope, the vibration-damp steel
Cord will tense between the drag-line and beam body.Using this programme damping ring banding on drag-line, and by drag-line by oscillation crosswise
It is delivered on vibration damping steel wire rope.
Turnbuckle is provided between above-mentioned vibration damping steel wire rope and the damping ring, the turnbuckle one end and the vibration-damp steel
Cord is fixedly connected, and the other end is fixedly connected with the damping ring.Vibration damping steel wire can be adjusted by turnbuckle using this design
The pretightning force of rope, increase the lateral confinement power of drag-line.
Above-mentioned drag-line includes at least three strands of steel strand wires components, and twisted wire sleeve pipe, institute have been respectively coated by outside per share steel strand wires component
There is the steel strand wires component to be coated with same protection tube.Mutually twined by multiply steel strand wires component using this design drag-line
Around into intensity is higher.
The per share steel strand wires component includes at least three steel wires, and epoxy coating has been respectively coated by outside the every steel wire,
Anti-corrosion grease is provided with space between the adjacent steel wire, all steel wires are coated with the same twisted wire sleeve pipe.
The per share steel strand wires component includes seven steel wires, and seven steel wires mutually wind shape along its length
Into the steel strand wires component, the cross section of the steel strand wires component is in regular hexagon.
The material of above-mentioned protection tube is HDPE, and the material of the twisted wire sleeve pipe is PE.
Beneficial effect：It is that the built-in fitting of stay guy is embedded with beam body using the beneficial effects of the utility model, installation
Directly drag-line is fixed on built-in fitting during drag-line, is fixed conveniently, damping ring banding is incited somebody to action laterally on drag-line, and by drag-line
Vibration is delivered on vibration damping steel wire rope, reduces the vibration frequency and amplitude of drag-line, prevents resonance harm, the damping assembly
Continue to play a role even if (being mounted with damper) after construction terminates and can still retain.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is Fig. 1 A-A ' sectional views；
Fig. 3 is the structural representation of steel strand wires.
Embodiment
With reference to embodiment and accompanying drawing, the utility model is described in further detail.
As Figure 1-3, a kind of cable-stayed bridge vibration absorber, including beam body 1 and drag-line 2, the beam body 1 are provided with built-in fitting
3, the drag-line 1 is fixedly mounted in the beam body 1 by the built-in fitting 3, is provided with and is subtracted between the drag-line 2 and the beam body 1
Shaken component, and the damping assembly one end is connected with the drag-line 2, and the other end is connected with the beam body 1.
The built-in fitting 3 is pre-buried cylinder, and the lower end of the drag-line 2 is stretched into the pre-buried cylinder and fixed with the pre-buried cylinder
Connection, is provided with elastic damping layer 8, the material of the elastic damping layer 8 is rubber between the drag-line 2 and the barrel of pre-buried cylinder；Institute
Stating damping assembly includes damping ring 6 and draws anchor 5, and the damping ring 6 is solidly set on the drag-line 2, and the drawing anchor 5 is fixedly mounted on
In the beam body 1, it is fixedly connected between the damping ring 6 and drawing anchor 5 by vibration damping steel wire rope 4, the vibration damping steel wire rope 4 is by described in
Tensed between drag-line 2 and beam body 1, distance and the drawing anchor 5 of the damping ring 6 away from the pre-buried cylinder arrive the damping ring 6
Distance is 2 meters or so, and turnbuckle 7 is provided between the vibration damping steel wire rope 4 and the damping ring 6, the one end of turnbuckle 7
Be fixedly connected with the vibration damping steel wire rope 4, the other end is fixedly connected with the damping ring 6, the vibration damping steel wire rope 4 it is a diameter of
15mm, strength grade 1770MPa.
The drag-line 2 includes at least three strands of steel strand wires components 201, and twisted wire has been respectively coated by outside per share steel strand wires component 201
Sleeve pipe 203, all steel strand wires components 201 are coated with same protection tube 202, the per share steel strand wires component 201
Including being at least respectively coated by epoxy coating 201b, the adjacent steel wire outside three steel wires 201a, the every steel wire 201a
In space between 201a the same twisted wire sleeve pipe is coated with provided with anti-corrosion grease 201c, all steel wire 201a
203, it is preferable that the per share steel strand wires component 201 includes seven steel wire 201a, and seven steel wire 201a grow along it
Degree direction is mutually wound the steel strand wires component 201, and the cross section of the steel strand wires component 201 is in regular hexagon, described
The material of protection tube 202 is HDPE, and the material of the twisted wire sleeve pipe 203 is PE, a diameter of 15.2mm of the steel wire 201a.
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 (6)
1. a kind of cable-stayed bridge vibration absorber, including beam body (1) and drag-line (2), it is characterised in that：The beam body (1) is provided with pre-
Embedded part (3), the drag-line (2) are fixedly mounted in the beam body (1) by the built-in fitting (3), the drag-line (2) and the beam
Damping assembly is provided between body (1), the damping assembly one end is connected with the drag-line (2), and the other end connects with the beam body (1)
Connect；
The damping assembly includes damping ring (6) and draws anchor (5), and the damping ring (6) is solidly set on the drag-line (2), described
Anchor (5) is drawn to be fixedly mounted in the beam body (1), it is solid by vibration damping steel wire rope (4) between the damping ring (6) and drawing anchor (5)
Fixed connection, the vibration damping steel wire rope (4) will tense between the drag-line (2) and beam body (1).
2. cable-stayed bridge vibration absorber according to claim 1, it is characterised in that：The vibration damping steel wire rope (4) subtracts with described
Shake and be provided with turnbuckle (7) between ring (6), turnbuckle (7) one end is fixedly connected with the vibration damping steel wire rope (4), another
End is fixedly connected with the damping ring (6).
3. cable-stayed bridge vibration absorber according to claim 1 or 2, it is characterised in that：The drag-line (2) includes at least three strands
Steel strand wires component (201), per share steel strand wires component (201) have been respectively coated by twisted wire sleeve pipe (203), all steel strand wires groups outside
Part (201) is coated with same protection tube (202).
4. cable-stayed bridge vibration absorber according to claim 3, it is characterised in that：Per share steel strand wires component (201) bag
At least three steel wires (201a) are included, epoxy coating (201b), the adjacent steel have been respectively coated by outside the every steel wire (201a)
Anti-corrosion grease (201c) is provided with space between silk (201a), all steel wires (201a) are coated with the same strand
Thread casing (203).
5. cable-stayed bridge vibration absorber according to claim 4, it is characterised in that：Per share steel strand wires component (201) bag
Seven steel wires (201a) are included, seven steel wires (201a) are mutually wound the steel strand wires component along its length
(201), the cross section of the steel strand wires component (201) is in regular hexagon.
6. cable-stayed bridge vibration absorber according to claim 3, it is characterised in that：The material of the protection tube (202) is
HDPE, the material of the twisted wire sleeve pipe (203) is PE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720408744.6U CN207210939U (en) | 2017-04-18 | 2017-04-18 | Cable-stayed bridge vibration absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720408744.6U CN207210939U (en) | 2017-04-18 | 2017-04-18 | Cable-stayed bridge vibration absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207210939U true CN207210939U (en) | 2018-04-10 |
Family
ID=61810922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720408744.6U Expired - Fee Related CN207210939U (en) | 2017-04-18 | 2017-04-18 | Cable-stayed bridge vibration absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207210939U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853361A (en) * | 2019-03-26 | 2019-06-07 | 中铁大桥科学研究院有限公司 | Rubber damping damper |
| CN110565522A (en) * | 2019-09-12 | 2019-12-13 | 无锡金诚工程技术服务有限公司 | Fireproof, waterproof and shockproof protection device for bridge inhaul cable |
| CN112832144A (en) * | 2021-01-08 | 2021-05-25 | 重庆交通大学工程设计研究院有限公司 | Pedestrian suspension bridge reinforcing structure and construction process thereof |
-
2017
- 2017-04-18 CN CN201720408744.6U patent/CN207210939U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853361A (en) * | 2019-03-26 | 2019-06-07 | 中铁大桥科学研究院有限公司 | Rubber damping damper |
| CN109853361B (en) * | 2019-03-26 | 2024-03-19 | 中铁大桥科学研究院有限公司 | Rubber vibration-damping damper |
| CN110565522A (en) * | 2019-09-12 | 2019-12-13 | 无锡金诚工程技术服务有限公司 | Fireproof, waterproof and shockproof protection device for bridge inhaul cable |
| CN112832144A (en) * | 2021-01-08 | 2021-05-25 | 重庆交通大学工程设计研究院有限公司 | Pedestrian suspension bridge reinforcing structure and construction process thereof |
| CN112832144B (en) * | 2021-01-08 | 2021-12-07 | 重庆交通大学工程设计研究院有限公司 | Pedestrian suspension bridge reinforcing structure and construction process thereof |
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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: 20180410 Termination date: 20190418 |