CN106368343B - A kind of sag damping rope - Google Patents
A kind of sag damping rope Download PDFInfo
- Publication number
- CN106368343B CN106368343B CN201611005051.9A CN201611005051A CN106368343B CN 106368343 B CN106368343 B CN 106368343B CN 201611005051 A CN201611005051 A CN 201611005051A CN 106368343 B CN106368343 B CN 106368343B
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- main rope
- rope
- sag
- hoist cable
- ground
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/14—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate against other dangerous influences, e.g. tornadoes, floods
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a kind of sags to damp rope.Sag of the present invention damps rope, it includes main rope, and the upper end of main rope is connect with the upper anchor point for being consolidated in structure, and the lower end of main rope is connect with the anchorage for being fixed on ground；It is consolidated with a hoist cable at main rope midpoint, the hoist cable is substantially vertical with main rope, and lower end connects upper beam；Lower beam consolidates or is directly consolidated in ground by another hoist cable and ground；Damper is installed between upper beam and lower beam.The form that the present invention is combined using single main rope, hoist cable and damper, vibrates main rope using structural vibration, and sag changes with structural vibration generating period, is consumed energy using main rope sag mechanical periodicity driving damper, to inhibit structural vibration.
Description
Technical field
The invention belongs to structural vibration reduction technical fields, and in particular to a kind of sag damping rope.
Background technique
The advantages such as viscous damper is since its energy dissipation capacity is strong, and reliable operation, robustness is good, easy for installation, and expense is low, respectively
The viscous damper of kind various kinds is widely used in structures under wind and antidetonation.But viscous damper carries out energy consumption to structural vibration and subtracts
It when vibration, needs to be mounted on the point that one has with the structure near relative motion, be driven by the relative motion of structure and the point
The piston rod of fluctuation dampers occurs reciprocal relative movement with cylinder body and consumes energy, to reduce the vibration of structure.Super 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 to occupy the multilayer space of structure, and
It is costly.When coming earthquake, since duration of earthquake is short, TMD may have little time to start.Especially cantilever construction it is big across
Spend bridge, significantly vertical and horizontal swing can occur under high wind effect for the great cantilever stage before closure of bridge structure, to structure and
Personnel safety brings very big hidden danger.Vertical motion is generally controlled using vertical sunpender at present, TMD controls oscillation crosswise.
Double rope composite damping ropes eliminate main rope sag, with biggish axial rigidity, and utilize the big axial direction of main rope
Vibration damping is realized in rigidity realization between two structures apart from each other, but it has the disadvantage in that (1) its main rope has biggish 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 small, beam wind effect under biggish transversely deforming can occur, cause main rope pulling force to significantly increase, so as to cause structure occur compared with
Large deformation.It (2), can be in its main rope, the stretching force of secondary rope axial direction generation mechanical periodicity, when the variation frequency of stretching force when structural vibration
When rate is with main rope or consistent secondary rope intrinsic frequency, it will lead to the substantially vibration of main rope or secondary rope, bring unfavorable shadow to structural vibration reduction
It rings.(3) composite damping Cable Structure is relative complex, and the length and installation site of sunpender must be accurately calculated in advance and accurately be installed,
The difficulty that later period changes is big.
Summary of the invention
The purpose of the present invention is to provide a kind of installations simply, does not need the influence for eliminating beam wind, and can be using laterally
The influence of wind increases the sag damping rope of energy dissipation capacity.
Above-mentioned purpose of the invention is realized by the following technical solutions: the sag damps rope, it includes main rope,
The upper end of main rope is connect with the upper anchor point for being consolidated in structure, and the lower end of main rope is connect with the anchorage for being fixed on ground；In main rope
Midpoint is consolidated with a hoist cable, and the hoist cable is substantially vertical with main rope, and lower end connects upper beam；Lower beam passes through another hoist cable
Ground is consolidated or is directly consolidated in ground；Damper is installed between upper beam and lower beam.
Further, when main rope inclination angle is larger, with the hoist cable of main rope midpoint consolidation around one be fixed on ground determine cunning
After wheel, lower end reconnects crossbeam.
Further, in order to reinforce damp rope effectiveness in vibration suppression, spring is also equipped between upper beam and lower beam.
The form that the present invention is combined using single main rope, hoist cable and damper, vibrates main rope using structural vibration, sag
Change with structural vibration generating period, drives damper to consume energy jointly using the tensioning of main rope sag mechanical periodicity and spring, from
And inhibit structural vibration.
Innovative point of the invention is mainly reflected in following several points:
(1) main cable's tension generating period is caused when structure is vibrated using main rope connection vibrational structure and ground
Variation.
(2) keep main rope generation sagging using main rope self gravity, by the control of initial rope tensility size, rigging is made to have one
Lesser sag；Similarly, there is lesser horizontal direction sag to crosswind force.
(3) periodically variable main cable's tension causes main rope sag size generating period to change, passes through the period of sag
Property variation drive damper movement energy consumption in conjunction with the collective effect of hoist cable and spring, the mechanical energy of dissipation vibrational structure, thus
Inhibit the vibration of structure.
(4) the small sag of main rope can make main rope sag changing value be much larger than the amplitude of structural vibration, play motion amplification work
With increase damper energy dissipation capacity.
(5) under beam wind effect, horizontal sag occurs for main rope, at this point, horizontal vibration and vertical vibration occur simultaneously for main rope
It is dynamic.Referring to fig. 2, two hoist cables 4 shown in Fig. 2 can be used, two directions of main rope can be inhibited to vibrate simultaneously.In Fig. 2,11 are indicated
Direction vibration structure, 10 indicate fixed pulley, and 5 indicate upper upper beam, and 6 indicate spring, and 7 indicate damper, and 8 indicate lower beam.
(6) compared with existing using the damping rope for being axially moved driving damper, present invention installation is simple, does not need to eliminate
The influence of beam wind, and the influence of beam wind can be utilized, increase energy dissipation capacity.
(7) in case of need, after increasing main cable's tension, main rope can also have the performance of horizontal wind resistance cable, reduce knot
Deformation of the structure under the effect of quiet wind, therefore, the present invention can have simultaneously reduce deformability of the structure under quiet wind and structure by
The wind-induced vibration of wind effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention 1.
Structural schematic diagram when Fig. 2 is present invention application.
Structural schematic diagram when Fig. 3 is deformation application of the present invention.
Specific embodiment
The present invention 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, it is (general that vibration occurs under wind effect for tall and slender structure
It is swung left and right for structure), it is reduced to vibrational structure 1 shown in FIG. 1.It can be seen from figure 1 that the upper end of main rope 2 and being consolidated in vibration
The upper anchor point 9 of structure 1 connects, and the lower end of main rope 2 is connect with the anchorage 3 for being fixed on ground.Main rope 2 is in self gravity or wind-force
Effect, which issues, gives birth to vertical or transversely deforming, deviates the direct-connected line of the upper and lower anchor point of main rope 2, and 2 midpoint of main rope is to directly under normal circumstances
The distance of line is maximum, this maximum distance is now known as sag.With the increase of 2 tension of main rope, 2 sag of main rope reduces.From Fig. 1
In be also shown, main rope 2 midpoint consolidate hoist cable 4, hoist cable 4 is substantially vertical with main rope 2, hoist cable 4 bypass is fixed on determining for ground
(for the lesser situation in 2 inclination angle of main rope, fixed pulley 10 can be not added) after pulley 10, lower end connects upper beam 5；Lower beam 8
It is consolidated by another hoist cable and ground, or is directly consolidated in ground；Spring 6 and resistance are installed in parallel between upper beam 5 and lower beam 8
Buddhist nun's device 7.
When vibrational structure 1 vibrates to the left, the direct-connected linear distance of the upper and lower anchor point of main rope 2 increases, and main rope 2 is tensioned, and hangs down
Degree reduces, and 2 midpoint of main rope moves up；Hoist cable 4 is pulled to move upwards, hoist cable 4 stretches damper 7 and spring 6, damper 7 are deforming
It consumes energy in the process.
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 the relaxation of main rope 2 is hung down
Degree increases, and 2 midpoint of main rope moves down；Spring 6 pulls hoist cable 4 to move downward, and damper 6 is compressed, and damper 6 is in deformation process
Energy consumption.
Above embodiments for explaining only the invention, are not intended to limit the present invention, and the present invention can also have other changes
Shape, transformation and application, such as:
(1) damper can be removed, directly becomes oblique tensioning wind resistance cable.
(2) if damper can be using self gravity or the effect realization of other power automatically resets or partial reset, spring
It can remove, not influence the effectiveness in vibration suppression for damping rope.
(3) damper uses other energy-consuming devices instead, equally can reality constructs oscillation damping and energy dissipating.
(4) change main rope inclination angle, damping rope can realize vibration damping respectively to structure vertical motion and oscillation crosswise or subtract simultaneously
Vibration.
(5) main rope 2 can remove for structure vertical motion referring to Fig. 3, hoist cable 4 is directly connected in vertical motion structure 12
On, as shown in the right rope in Fig. 3.Or 2 vertical tension of main rope, hoist cable 4 and main rope 2 have angle oblique tensioning, such as the left side in 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
It connects, the lower end of main rope is connect 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, lower end connects upper beam；Lower beam consolidates or is directly consolidated in ground by another hoist cable and ground；In upper beam
Damper is installed between lower beam.
2. sag damps rope according to claim 1, it is characterised in that: bypass a fixation with the hoist cable of main rope midpoint consolidation
After the fixed pulley on ground, lower end reconnects crossbeam.
3. sag according to claim 1 or claim 2 damps rope, it is characterised in that: be also equipped between upper beam and lower beam
Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611005051.9A CN106368343B (en) | 2016-11-15 | 2016-11-15 | A kind of sag damping rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611005051.9A CN106368343B (en) | 2016-11-15 | 2016-11-15 | A kind of sag damping rope |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106368343A CN106368343A (en) | 2017-02-01 |
| CN106368343B true CN106368343B (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611005051.9A Active CN106368343B (en) | 2016-11-15 | 2016-11-15 | A kind of sag damping rope |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441730A (en) * | 2018-12-19 | 2019-03-08 | 上海电气风电集团有限公司 | Tower frame shock absorbing device and pylon including it |
| CN113585072B (en) * | 2021-08-18 | 2022-10-28 | 湖南科技大学 | Sliding damping cable vibration damper |
| CN113685485A (en) * | 2021-09-07 | 2021-11-23 | 湖南科技大学 | Double-layer cantilever support self-anchored flexible tower mast structure vibration damping cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327084C (en) * | 2004-12-07 | 2007-07-18 | 清华大学 | Stayed cable shock attenuation device |
| CN101550733B (en) * | 2009-05-07 | 2010-12-01 | 同济大学 | Stay cable end elastic constraint vibration controlling device |
| CN202689228U (en) * | 2012-04-09 | 2013-01-23 | 上海华尔派建筑装饰工程有限公司 | Safety device for pulling cable type glass curtain wall |
| CN105220615B (en) * | 2015-09-15 | 2017-07-11 | 同济大学 | A kind of vibration absorber for suppressing large-span suspension bridge suspension rod wind-induced vibration |
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