CN206174180U - Sag damping cable - Google Patents
Sag damping cable Download PDFInfo
- Publication number
- CN206174180U CN206174180U CN201621226900.9U CN201621226900U CN206174180U CN 206174180 U CN206174180 U CN 206174180U CN 201621226900 U CN201621226900 U CN 201621226900U CN 206174180 U CN206174180 U CN 206174180U
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- China
- Prior art keywords
- main rope
- sag
- rope
- hoist cable
- ground
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a sag damping cable. The utility model discloses sag damping cable, it includes the main rope, and the upper end and the last anchor point who concreties in the structure of main rope are connected, and the lower extreme and the anchorage that is fixed in ground of main rope are connected, it has a hoist cable to concrete at the main rope mid point, and this hoist cable is roughly perpendicular with the main rope, and the entablature is connected to its lower extreme, the bottom end rail concreties or directly concreties in ground through another hoist cable and ground, install the attenuator between entablature and bottom end rail. The utility model discloses a form that single main rope, hoist cable and attenuator combine utilizes structural vibration to make the main rope vibration, and its sag changes along with structural vibration occurs periodically, utilizes the power consumption of main rope sag periodic change drive attenuator to restrain structural vibration.
Description
Technical field
This utility model belongs to structural vibration reduction technical field, and in particular to a kind of sag damps rope.
Background technology
Viscous damper is strong due to its energy dissipation capacity, and reliable operation, robustness is good, easy for installation, the low advantage of expense, respectively
The viscous damper for planting various kinds is widely used in structures under wind and antidetonation.But viscous damper carries out power consumption and subtracts to structural vibration
When shaking, need to be arranged on the point of a vicinity for having relative motion with the structure, driven by the relative motion of structure and the point
There is reciprocal relative movement and consumed energy in the piston rod of fluctuation dampers, with cylinder body so as to reduce the vibration of structure.High-rise building
Transverse vibration (or vibration) by a relatively large margin can occur under earthquake or wind action, existing damping technology is hindered using frequency modulation mass
Buddhist nun's device (Tune mass damper, abbreviation TMD) carries out vibration damping, but its quality is big, needs many sheaf spaces for taking structure, and
It is costly.When coming earthquake, because duration of earthquake is short, TMD may have little time to start.Particularly cantilever construction it is big across
Degree bridge, in the great cantilever stage before closure of bridge structure, can occur significantly vertical and teeter under high wind effect, to structure and
Personal security brings very big hidden danger.Typically vertical motion, TMD control oscillation crosswises are controlled using vertical suspension rod at present.
Double rope composite damping ropes eliminate main rope sag, are allowed to larger axial rigidity, and using the big axial direction of main rope
Rigidity is realized realizing vibration damping between two structures apart from each other, but it is suffered from the drawback that：(1) its main rope has larger axial direction
Rigidity, because secondary rope is sagging in vertical plane, so the vertical rigidity of main rope and secondary rope is relatively large, and lateral stiffness is very
It is little, beam wind effect under larger transversely deforming can occur, cause main rope pulling force to significantly increase, so as to cause structure occur compared with
Large deformation.(2) during structural vibration, the stretching force of mechanical periodicity can be axially produced in its main rope, secondary rope, when the change frequency of stretching force
When rate is with main rope or consistent secondary rope natural frequency, the significantly vibration of main rope or secondary rope can be caused, to structural vibration reduction unfavorable shadow is brought
Ring.(3) composite damping Cable Structure is relative complex, and the length and installation site of suspension rod must accurately be calculated in advance and accurately installed,
The difficulty that later stage changes is big.
The content of the invention
The purpose of this utility model is to provide a kind of installation simply, it is not necessary to eliminates the impact of beam wind, and can utilize
The impact of beam wind, increases the sag damping rope of energy dissipation capacity.
Above-mentioned purpose of the present utility model is by the following technical solutions realizing：The sag damping rope, it includes
Main rope, the upper end of main rope is connected with the upper anchor point for being consolidated in structure, and the lower end of main rope is connected with the anchorage for being fixed on ground；
Main rope midpoint is consolidated with a hoist cable, and the hoist cable is substantially vertical with main rope, its lower end connection entablature；Sill passes through another
Hoist cable consolidates or is directly consolidated in ground with ground；Antivibrator is installed between entablature and sill.
Further, when main rope inclination angle is larger, with the hoist cable of main rope midpoint consolidation bypass one be fixed on ground determine cunning
After wheel, its lower end reconnects crossbeam.
Further, in order to plus heavy damping rope effectiveness in vibration suppression, spring is also equipped between entablature and sill.
This utility model vibrates main rope in the form of single main rope, hoist cable and antivibrator are combined using structural vibration, its
Sag changes with structural vibration generating period, drives antivibrator to consume jointly using the tensioning of main rope sag mechanical periodicity and spring
Can, so as to suppress structural vibration.
Innovative point of the present utility model be mainly reflected in it is following some：
(1) vibrational structure and ground are connected using main rope, when structure is vibrated, causes main cable's tension generating period
Change.
(2) there is main rope using main rope self gravitation sagging, by the control of initial rope tensility size, make rigging have one
Less sag；In the same manner, there is less horizontal direction sag to crosswind force.
(3) periodically variable main cable's tension, causes main rope sag size generating period to change, by the cycle of sag
Property change, with reference to hoist cable and the collective effect of spring, drive antivibrator motion power consumption, the mechanical energy of dissipation vibrational structure, so as to
Suppress the vibration of structure.
(4) the little sag of main rope can make main rope sag changing value much larger than the amplitude of structural vibration, play motion amplification work
With increase antivibrator energy dissipation capacity.
(5) under beam wind effect, main rope occurred level sag, now, simultaneously occurred level vibrates and vertically shakes main rope
It is dynamic.Referring to Fig. 2, two hoist cables 4 shown in Fig. 2 can be adopted, two directions that can simultaneously suppress main rope vibrate.In Fig. 2,11 represent
Two-way oscillation structure, 10 represent fixed pulley, and 5 represent upper entablature, and 6 represent spring, and 7 represent antivibrator, and 8 represent sill.
(6) compared with the damping rope that existing employing axially-movable drives antivibrator, this utility model is installed simple, it is not necessary to
The impact of beam wind is eliminated, and energy dissipation capacity can be increased using the impact of beam wind.
(7) in case of need, increase after main cable's tension, main rope there can also be the performance of horizontal wind resistance cable, reduce knot
Deformation of the structure under the effect of quiet wind, therefore, this utility model can simultaneously have the deformability for reducing structure under quiet wind, and knot
The wind-induced vibration of structure wind-engaging effect.
Description of the drawings
Fig. 1 is the structural representation of this utility model embodiment 1.
Structural representation when Fig. 2 is this utility model application.
Structural representation when Fig. 3 is this utility model deformation application.
Specific embodiment
This utility model is described in further detail with reference to the accompanying drawings and examples.
Referring to Fig. 1, by taking the towering structural vibration reduction such as power transmission tower as an example, to there is vibration in tall and slender structure (general under wind effect
Vacillate now to the left, now to the right for structure), the vibrational structure 1 being reduced to shown in Fig. 1.It can be seen from figure 1 that the upper end of main rope 2 be consolidated in vibration
The upper anchor point 9 of structure 1 connects, and the lower end of main rope 2 is connected with the anchorage 3 for being fixed on ground.Main rope 2 is in self gravitation or wind-force
Effect issues to give birth to hangs down or transversely deforming, deviates the direct-connected line of the upper and lower anchor point of main rope 2, and generally the midpoint of main rope 2 is to directly
The distance of line is maximum, now this ultimate range is referred to as into sag.With the increase of the tension force of main rope 2, the sag of main rope 2 reduces.From Fig. 1
In be also shown, consolidate hoist cable 4 at the midpoint of main rope 2, hoist cable 4 is substantially vertical with main rope 2, and hoist cable 4 is bypassed and is fixed on determining for ground
(for the less situation in the inclination angle of main rope 2, fixed pulley 10 can be not added with) after pulley 10, its lower end connection entablature 5；Sill 8
Consolidated by another hoist cable and ground, or be directly consolidated in ground；Spring 6 and resistance are installed in parallel between entablature 5 and sill 8
Buddhist nun's device 7.
When vibrational structure 1 vibrates to the left, the direct-connected linear distance increase of the upper and lower anchor point of main rope 2, main rope 2 is tensioned, and it hangs down
Degree reduces, and moves on the midpoint of main rope 2；Hoist cable 4 is pulled to move upwards, hoist cable 4 stretches antivibrator 7 and spring 6, and antivibrator 7 is in deformation
During consume energy.
When vibrational structure 1 vibrates to the right, the direct-connected linear distance of the upper and lower anchor point of main rope 2 reduces, and main rope 2 relaxes, and it hangs down
Degree increase, the midpoint of main rope 2 moves down；Spring 6 pulls hoist cable 4 to move downward, and antivibrator 6 is compressed, and antivibrator 6 is in deformation process
Power consumption.
Above example is only used for explaining this utility model that be not used to limit this utility model, this utility model may be used also
To have other deformations, conversion and application, such as：
(1) antivibrator can be removed, is directly changed into oblique tensioning wind resistance cable.
(2) if antivibrator can be automatically reset or partial reset using self gravitation or other power effect realizations, spring
Can remove, not affect the effectiveness in vibration suppression for damping rope.
(3) antivibrator uses other energy-dissipating devices instead, equally can reality constructs oscillation damping and energy dissipating.
(4) main rope inclination angle is changed, damping rope can realize vibration damping respectively or while subtract to structure vertical motion and oscillation crosswise
Shake.
(5) referring to Fig. 3, for structure vertical motion, main rope 2 is can remove, hoist cable 4 is directly connected in vertical motion structure 12
On, as shown in the right rope in Fig. 3.Or the vertical tension of main rope 2, hoist cable 4 and main rope 2 have angle oblique tensioning, the left side in such as Fig. 3
Shown in rope.
Claims (3)
1. a kind of sag damps rope, it is characterised in that：It includes main rope, and the upper end of main rope connects with the upper anchor point for being consolidated in structure
Connect, the lower end of main rope is connected with the anchorage for being fixed on ground；Be consolidated with a hoist cable at main rope midpoint, the hoist cable substantially with main rope
Vertically, its lower end connection entablature；Sill consolidates or is directly consolidated in ground by another hoist cable with ground；In entablature
Antivibrator is installed between sill.
2. according to claim 1 sag damps rope, it is characterised in that：A fixation is bypassed with the hoist cable of main rope midpoint consolidation
After the fixed pulley on ground, its lower end reconnects crossbeam.
3. sag according to claim 1 or claim 2 damps rope, it is characterised in that：It is also equipped between entablature and sill
Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621226900.9U CN206174180U (en) | 2016-11-15 | 2016-11-15 | Sag damping cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621226900.9U CN206174180U (en) | 2016-11-15 | 2016-11-15 | Sag damping cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206174180U true CN206174180U (en) | 2017-05-17 |
Family
ID=58684024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621226900.9U Withdrawn - After Issue CN206174180U (en) | 2016-11-15 | 2016-11-15 | Sag damping cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206174180U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445412A (en) * | 2021-07-26 | 2021-09-28 | 中铁桥研科技有限公司 | Vibration damper for controlling vortex-induced vibration of girder of large-span bridge |
-
2016
- 2016-11-15 CN CN201621226900.9U patent/CN206174180U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445412A (en) * | 2021-07-26 | 2021-09-28 | 中铁桥研科技有限公司 | Vibration damper for controlling vortex-induced vibration of girder of large-span bridge |
| CN113445412B (en) * | 2021-07-26 | 2022-05-13 | 中铁桥研科技有限公司 | Vibration damper for controlling vortex-induced vibration of girder of large-span bridge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170517 Effective date of abandoning: 20190118 |