CN108457183A - A kind of anchor-hold end damper based on viscid fluid and spring damping - Google Patents
A kind of anchor-hold end damper based on viscid fluid and spring damping Download PDFInfo
- Publication number
- CN108457183A CN108457183A CN201810299807.8A CN201810299807A CN108457183A CN 108457183 A CN108457183 A CN 108457183A CN 201810299807 A CN201810299807 A CN 201810299807A CN 108457183 A CN108457183 A CN 108457183A
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- piston
- oil cylinder
- anchor
- connecting rod
- cylinder
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- 238000013016 damping Methods 0.000 title claims abstract description 56
- 239000012530 fluid Substances 0.000 title claims abstract description 34
- 238000004873 anchoring Methods 0.000 claims abstract description 13
- 239000011440 grout Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a kind of anchor-hold end damper based on viscid fluid and spring damping, including outer barrel and the oil cylinder and inner cylinder that are placed in outer barrel；Oil cylinder bottom surface is connected with bottom anchor cable wire；Piston is set inside oil cylinder；Piston is fixedly linked with connecting rod；Connecting rod is fixedly linked across the bottom of through-hole and inner cylinder that oil cylinder top surface opens up；It is sealed between plug and cylinder wall；It is sealed between connecting rod and oil cylinder top surface through-hole；By at least two stiffness spring connections between oil cylinder top surface and piston, the top of inner cylinder is connected with upper anchorage cable wire；Anchoring cable wire generates vibration under dynamic load function and pulls inner cylinder movement that connecting rod movement, connecting rod movement band piston is driven to move.Oil cylinder in the present invention generates the method that fluid damping forces damp collaborative work jointly with spring simultaneously, it can be under the premise of drag-line rigidity be lost, the internal force and Displacement Saltation that effectively control moment dynamic load function generates on cable-stayed bridge, mitigate the burden of guy anchor fixed end.
Description
Technical field
The present invention relates to civil engineering science of bridge building fields and structural vibration reduction control field, especially a kind of to be based on viscous flow
The anchor-hold end damper of body and spring damping.
Background technology
Cable-stayed bridge cable easily occurs significantly wind shake, wind and rain and shakes and parametric vibration.In the prior art, cable-stayed bridge reduction is shaken
Moving the measure reacted includes mainly（1）Cable-stayed Bridge Pylon layout is adjusted, scantling is optimized；（2）Improve cable-stayed bridge rigidity；（3）
Damping control device is set.Under the premise of Cable-Stayed Bridge Structure function determines, it is larger to adjust its Sarasota layout difficulty；And it improves oblique
It draws bridge rigidity necessarily to will increase key member sectional dimension, not only improves difficulty of construction, further increase construction cost and vibration is anti-
It answers.According to Energy dissipating material inside damper, suspension cable can be often divided into damper：High-damping rubber damper, viscosity are cut
Cut type damper, oil damper, magnetorheological (MR) damper and magnetic damper etc..Wherein viscid fluid damper consumes energy because of it
More, simple structure and be widely used in the fields such as building, machinery, therefore, the reasonable Arrangement vibration damping control on cable-stayed bridge key member
Device processed will be a kind of scheme of great foreground.Normal cable-stayed bridge drag-line is generally directly anchored in end of main beam, and utilization is external
Damper vibration damping, when drag-line is little because of vibration generation displacement, effectiveness in vibration suppression is unsatisfactory.
Invention content
1, technical problem to be solved：
The present invention provides a kind of anchor-hold end damper based on viscid fluid and spring damping, which changes commonly
The method that cable-stayed bridge cable is generally directly anchored in end of main beam, the method for use of the invention are that outer barrel is anchored at girder
Interior, vibration damping more directly effectively, can effectively control moment dynamic load function oblique under the premise of drag-line rigidity is not lost
The internal force and Displacement Saltation generated on bridge is drawn, the burden of guy anchor fixed end is mitigated.It uses in oil cylinder while producing in the present invention
The method that raw viscid fluid damping forces damp collaborative work jointly with spring, can have under the premise of drag-line rigidity is not lost
The internal force and Displacement Saltation that effect control moment dynamic load function generates on cable-stayed bridge, mitigate the burden of guy anchor fixed end.
2, technical solution：
A kind of anchor-hold end damper based on viscid fluid and spring damping, including outer barrel and the oil cylinder for being placed in outer barrel
And inner cylinder；It is characterized in that：The oil cylinder bottom surface is connected with bottom anchor cable wire；Piston is set inside the oil cylinder；Piston with
Connecting rod is fixedly linked；Connecting rod is fixedly linked across the bottom of through-hole and inner cylinder that oil cylinder top surface opens up；The piston and oil
It is sealed between casing wall；It is sealed between the connecting rod and oil cylinder top surface through-hole；By at least between the oil cylinder top surface and piston
Two stiffness spring connections, the top of the inner cylinder is connected with upper anchorage cable wire；The anchoring cable wire is in dynamic load function
Lower generation vibration, pulls inner cylinder movement, drives the connecting rod movement being fixed in inner cylinder, connecting rod movement band piston is along oil cylinder
Wall moves.
Further, damping fluid is filled inside the oil cylinder；Oil cylinder is divided into damping ante-chamber and back cavity by the piston；It is described
Piston face opens up at least two piston oilholes；The piston oilhole is the through-hole on piston, provides damping fluid in damping ante-chamber
The flow channel between back cavity.Small hole is provided on piston as piston oilhole, effect is when dynamic load and to occur
When relative displacement, damping fluid generates damping force by piston oilhole.Full of the damping fluid that damped coefficient is larger inside oil cylinder, drawing
Under cable stretching state, piston holddown spring provides rigidity for drag-line；When under dynamic load function and opposite position occurs for component
It moves, damping fluid flows through piston oilhole and generates damping force, while stiffness spring provides part and damps.
Further, the outer barrel is cylinder.
Further, the outer barrel bottom is followed successively by stop collar and fastening lid from inside to outside；The stop collar and fastening lid
It is fixedly linked；The stop collar is rubber；Through-hole, connection oil cylinder bottom is arranged in stop collar position corresponding with fastening cap surface
The anchoring cable wire in face sequentially passes through stop collar and the through-hole of fastening lid.
Further, the top of the outer barrel is followed successively by stop collar and fastening lid from inside to outside；The stop collar and fastening
Lid is fixedly linked；The stop collar is rubber；Through-hole is arranged in stop collar position corresponding with fastening cap surface, connects inner cylinder
The anchoring cable wire at top sequentially passes through stop collar and the through-hole of fastening lid.
Further, jack is arranged in the bottom anchor cable wire.In this method using jack be used for balance cable wire by
Arrive pulling force.
Further, grout hole is arranged in the inner cylinder side wall, is poured into grouting liquid in inner cylinder by grout hole.When above-mentioned
When component connection is completed, grouting liquid is circulated into inner cylinder by grout hole, after waiting grouting liquids to solidify, the non-piston end of connecting rod
It is secured in inner cylinder.
Further, it is located at the connecting rod surface on the outside of the outer and inner cylinder of oil cylinder and protective case is set.
3, advantageous effect：
（1）Damping fluid is filled in the present invention inside oil cylinder, will produce damping fluid damping when the piston movement in oil cylinder；Oil cylinder
Stiffness spring is fixed between piston and the end of oil cylinder, will produce according to the position of piston movement when the piston movement in oil cylinder
Corresponding elastic damping.Either damping fluid damping or elastic damping are the stress in cable wire on same straight line, together
When generate damping force be sized to meet drag-line rigidity requirement, thus can be used for vibration require stringent bridge cable anchored end
Connection.
（2）In the present invention, the damping fluid in oil cylinder is viscid fluid damping, and stiffness spring is provided in oil cylinder
Spring damping is carried out, is both designed in the same oil cylinder and cooperates, can effectively improve the efficiency of vibration damping.
（3）Both ends in the present invention in outer barrel add stop collar and fastening lid, so as to solve sealing problem.
（4）The position of the installation of the present invention is that outer barrel is anchored in girder, and such fixation can make vibration damping more directly effectively,
The internal force and position that moment dynamic load function generates on cable-stayed bridge can be effectively controlled under the premise of drag-line rigidity is not lost
Mutation is moved, the burden of guy anchor fixed end is mitigated.
Description of the drawings
Fig. 1 is the installation diagram of the present invention；
Fig. 2 is the structural schematic diagram of the present invention；
Fig. 3 is the sectional view of the oil cylinder of the present invention；
The sectional view of the middle inner cylinder of Fig. 4 present invention；
Fig. 5 is the structural schematic diagram at Bar Anchorage position of the present invention.
In figure：1- outer barrels, 2- oil cylinders, 3- inner cylinders, 4- pistons, 5- piston oilholes, 6- damping fluids, 7- connecting rods, 8- stiffnesses
Spring, 9- stop collars, 10- fastening lids, 11- protective cases, 12- anchoring cable wires, 13- jack, 14- girders, 15- outer barrel anchorages,
16- fastening bolts, 17- steel strand anchorages, 18- grout holes, 19- grouting materials.
Specific implementation mode
The invention will now be described in detail with reference to the accompanying drawings.
As shown in figure 1 and 2, a kind of anchor-hold end damper based on viscid fluid and spring damping, including outer barrel 1
With the oil cylinder 2 and inner cylinder 3 for being placed in outer barrel, the oil cylinder 2 is connected with inner cylinder 3；The oil cylinder bottom surface and anchoring 12 phase of cable wire
Even；Piston 4 is set inside the oil cylinder；Piston 4 is fixedly linked with connecting rod 7；The through-hole that connecting rod 7 is opened up by oil cylinder top surface
It is fixedly linked with the bottom of inner cylinder；The connecting rod is moved together with piston；The piston oil-cylinder side wall sealing；The connecting rod
It is sealed with oil cylinder top surface；At least two springs 8 are arranged between the oil cylinder top surface and piston to connect, the top of the inner cylinder and anchor
Gu cable wire 12 is connected.
If 1 outer barrel 1 of attached drawing is cylindrical tube, cylinder one end is equipped with anchoring fixture 15 and is embedded in concrete girder 14
In, there are the holes of pluggable inner cylinder 3 for the other end.Outer barrel both ends are both provided with stop collar 9 and fastening lid 10, and stop collar 9 constrains
The steel wire bundle position of cable wire 12 is anchored, stop collar 9 and inner cylinder 3 are fixed on inside outer barrel 1 by fastening lid 10.
Cavity body, that is, oil cylinder 2 is equipped in the middle part of outer barrel, one end of oil cylinder is connect with anchoring cable wire 12, and the other end is furnished with stiffness bullet
Spring 8 and the hole that pluggable connecting rod 7 is reserved at the top of oil cylinder, the hole and interior barrel chamber intercommunication fill damping fluid 6 in oil cylinder,
Cavity is separated into damping ante-chamber and back cavity by piston 4.Steel wire bundle hole is reserved in 3 one end of inner cylinder, and one end is reserved to can be inserted into connection
The hole of bar 7, inner cylinder 3 are inserted into outer barrel；7 one end of connecting rod connects piston 4, and the other end is anchored in inner cylinder 3.Wherein Fig. 3 is oil
The sectional view of cylinder；The sectional view of Fig. 4 inner cylinders；Fig. 5 is the structural schematic diagram for anchoring position.
Under normal usage, drag-line is in tensile state to damper structure, and the steel strand wires of anchoring cable wire 12 are drawn
Force effect, pulling the compression of piston 4 in oil cylinder 2 to be connected to 2 one end of oil cylinder by connecting rod 7 has larger Compressive Bearing Capacity
Stiffness spring 8, makes entire component be in equilibrium state, and stiffness spring 8 collectively forms viscid fluid-spring with viscid fluid 6 and hinders
Buddhist nun's damping system.
When component is under dynamic load function and relative displacement occurs, the relative motion under transient dynamics effect of inner cylinder 3,
And piston 4 is pushed by connecting rod 7, the part damping fluid 6 in piston 4, which is squeezed to flow through small piston oilhole 5 and generate, to be hindered
Buddhist nun's power, while the stiffness spring 8 being squeezed before this also provides part and damps, and is disappeared with reaching viscid fluid and spring damping cooperation
The working condition of energy.
Simultaneously as damping force size is directly proportional to the path length of the piston oilhole 5, so can be by increasing piston 4
Thickness achievees the effect that increase damping force using two methods of 5 path length of piston oilhole are increased.
Although the present invention has been described by way of example and in terms of the preferred embodiments, they be not it is for the purpose of limiting the invention, it is any ripe
This those skilled in the art is practised, without departing from the spirit and scope of the invention, can make various changes or retouch from working as, therefore the guarantor of the present invention
Shield range should be subject to what claims hereof protection domain was defined.
Claims (8)
1. a kind of anchor-hold end damper based on viscid fluid and spring damping, including outer barrel and the oil for being placed in outer barrel
Cylinder and inner cylinder；It is characterized in that：The oil cylinder bottom surface is connected with bottom anchor cable wire；Piston is set inside the oil cylinder；Piston
It is fixedly linked with connecting rod；Connecting rod is fixedly linked across the bottom of through-hole and inner cylinder that oil cylinder top surface opens up；The piston with
It is sealed between cylinder wall；It is sealed between the connecting rod and oil cylinder top surface through-hole；By extremely between the oil cylinder top surface and piston
Few two stiffness springs connection, the top of the inner cylinder is connected with upper anchorage cable wire；The anchoring cable wire is made in dynamic load
It is vibrated with lower generation, pulls inner cylinder movement, drive the connecting rod movement being fixed in inner cylinder, connecting rod movement band piston is along oil
Casing wall moves.
2. a kind of anchor-hold end damper based on viscid fluid and spring damping according to claim 1, feature
It is：Damping fluid is filled inside the oil cylinder；Oil cylinder is divided into damping ante-chamber and back cavity by the piston；The piston face opens up
At least two piston oilholes；The piston oilhole is the through-hole on piston, provides damping fluid and is flowed between damping ante-chamber and back cavity
Dynamic channel.
3. a kind of anchor-hold end damper based on viscid fluid and spring damping according to claim 1, feature
It is：The outer barrel is cylinder.
4. a kind of anchor-hold based on viscid fluid and spring damping according to claim 1 or 3 any claims
Hold damper, it is characterised in that：The outer barrel bottom is followed successively by stop collar and fastening lid from inside to outside；The stop collar and fastening
Lid is fixedly linked；The stop collar is rubber；Through-hole is arranged in stop collar position corresponding with fastening cap surface, connects oil cylinder
The anchoring cable wire of bottom surface sequentially passes through stop collar and the through-hole of fastening lid.
5. a kind of anchor-hold based on viscid fluid and spring damping according to claim 1 or 3 any claims
Hold damper, it is characterised in that：The top of the outer barrel is followed successively by stop collar and fastening lid from inside to outside；The stop collar with it is tight
Gu Gai is fixedly linked；The stop collar is rubber；The stop collar and the corresponding position of fastening cap surface are arranged through-hole, in connection
The anchoring cable wire at cylinder top sequentially passes through stop collar and the through-hole of fastening lid.
6. a kind of anchor-hold end damper based on viscid fluid and spring damping according to claim 1, feature
It is：Jack is arranged in the bottom anchor cable wire.
7. a kind of anchor-hold end damper based on viscid fluid and spring damping according to claim 1, feature
It is：；Grout hole is arranged in the inner cylinder side wall, is poured into grouting liquid in inner cylinder by grout hole.
8. a kind of anchor-hold end damper based on viscid fluid and spring damping according to claim 1, feature
It is：Protective case is arranged in connecting rod surface on the outside of the outer and inner cylinder of oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299807.8A CN108457183A (en) | 2018-04-04 | 2018-04-04 | A kind of anchor-hold end damper based on viscid fluid and spring damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299807.8A CN108457183A (en) | 2018-04-04 | 2018-04-04 | A kind of anchor-hold end damper based on viscid fluid and spring damping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108457183A true CN108457183A (en) | 2018-08-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810299807.8A Pending CN108457183A (en) | 2018-04-04 | 2018-04-04 | A kind of anchor-hold end damper based on viscid fluid and spring damping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108457183A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576678A (en) * | 2019-09-27 | 2021-03-30 | 中国电力科学研究院有限公司 | Vertical shock absorber and method for determining quality of damping liquid medium in vertical shock absorber |
| CN112576676A (en) * | 2019-09-27 | 2021-03-30 | 中国电力科学研究院有限公司 | Horizontal shock absorber and method for determining medium mass of damping liquid in horizontal shock absorber |
| CN113914213A (en) * | 2021-10-13 | 2022-01-11 | 江阴市斯瑞特石油机械制造有限公司 | Filling protective pipe for protecting overhead guardrail |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576678A (en) * | 2019-09-27 | 2021-03-30 | 中国电力科学研究院有限公司 | Vertical shock absorber and method for determining quality of damping liquid medium in vertical shock absorber |
| CN112576676A (en) * | 2019-09-27 | 2021-03-30 | 中国电力科学研究院有限公司 | Horizontal shock absorber and method for determining medium mass of damping liquid in horizontal shock absorber |
| CN112576678B (en) * | 2019-09-27 | 2023-12-08 | 中国电力科学研究院有限公司 | Vertical vibration absorber and method for determining mass of damping fluid medium in vertical vibration absorber |
| CN112576676B (en) * | 2019-09-27 | 2024-04-09 | 中国电力科学研究院有限公司 | Horizontal vibration damper |
| CN113914213A (en) * | 2021-10-13 | 2022-01-11 | 江阴市斯瑞特石油机械制造有限公司 | Filling protective pipe for protecting overhead guardrail |
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