CN108385518A - One kind becoming expansion compensation device and its construction method with bridge cable is differential - Google Patents
One kind becoming expansion compensation device and its construction method with bridge cable is differential Download PDFInfo
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- CN108385518A CN108385518A CN201810205883.8A CN201810205883A CN108385518A CN 108385518 A CN108385518 A CN 108385518A CN 201810205883 A CN201810205883 A CN 201810205883A CN 108385518 A CN108385518 A CN 108385518A
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- differential
- bridge
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- 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
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses one kind becoming expansion compensation device and its construction method with bridge cable is differential.Existing expansion compensation device, cannot achieve miniaturization and modularization, not adapt to apply in bridge babinet.The present invention includes at least one differential compensation unit with the differential expansion compensation device that becomes of bridge cable；The differential compensation unit includes for carrying the arched elastic steel plate of power cable, front tension bar, back stay and differential gear in the same direction for being fixed on bridge platform；The both ends of the arched elastic steel plate are connected in forward and backward shaft, and respectively one pulley of connection, the pulley are placed on guide rail at the both ends of the shaft, and guide rail is used to support pulley；The front and rear portions of the differential gear in the same direction are separately connected forward and backward pull rod, and the front and rear connecting rods are connect with forward and backward shaft respectively.The expansion compensation device of the present invention optimizes structure, has the characteristics that miniaturization, modularization, generalization, can substantially reduce investment outlay.
Description
Technical field
The present invention relates to bridge power cable affiliated facility field, specifically one kind becoming flexible with bridge cable is differential
Compensation device and its construction method, be exclusively used in solve long range bridge floor docking at different expansion joint widths variation cause with
The frequent engineering problem extended and compress of bridge cable.
Background technology
With advances in technology with the development in epoch, in overhead transmission line tight passage, extra large cable investment cost is big and technology is difficult
In the case that degree is high, high-tension line cable is laid with bridge, increasingly by Design of Highway Bridge and administrative department receiving and recognize
It can.
With bridge cabling engineering, maximum technological difficulties be to efficiently solve at bridge floor docking because climatic environment,
Gap variation caused by the variation of the factors such as bridge floor load.These cyclically-varyings, the electricity between the two bridge end gaps that can cause to be laid in
Cable frequently elongation and compression, makes power cable fatigue failure.For Oversea bridge, there are different to stretch for different sections
Seam, the stroke that large span stayed-cable bridge, suspension bridge bridge floor end especially on main channel generate can be more than 1m or more.General cable
Telescoping collapse is far from meeting bridge dilatation needs under system of laying.Only by with bridge cable expansion compensation device
（OFFSET）, just can be well solved this engineering roadblock.
Expansion compensation device（OFFSET）The core concept of device design is, in elongation and contraction process, entire arc length
It answers uniform equivalent to be bent, cable mounted thereto is made to ensure that strain in its day and accumulated fatigue are broken under the conditions of allowing bending radius
Bad coefficient meets prescribed requirement.
Domestic and international existing expansion compensation device（OFFSET）To in the horizontal direction be formed with bridge cable one it is arc-shaped
It places, is fixed on the cable tray of same arc, by dividing equally link mechanism, sliding cable frame pulls cable bracket to move
It is dynamic, to drive with the flexible of bridge cable.When movable bridge floor is shunk, arc Cable Bending Radius increases, and arc string elongates, elongation
Amount is equal to the shrinkage of dynamic bridge floor.When movable bridge floor extends, arc Cable Bending Radius reduces, and arc string shortens, indent etc.
In the elongation of dynamic bridge floor.This device is horizontally oriented arc placement, and installation floor area requirement is larger, and ordinary circumstance is both needed to
Additional steel platform is built in bridge case periphery, and this mechanism is complicated, cost of investment is high.
Above-mentioned expansion compensation device（OFFSET）, miniaturization and modularization are cannot achieve, is not adapted in bridge babinet
Middle application.
Invention content
The technical problem to be solved by the present invention is to overcome the problems of the above-mentioned prior art, one kind is provided in limited bridge
In case（Or on platform）Realizing that miniaturization is modular has being stretched with differential become of bridge cable for adaptation wide area flexible compensation ability
Contracting compensation device, to simplify structure, reduce investment outlay.
To achieve the above object, the present invention adopts the following technical scheme that：One kind becoming flexible compensation with bridge cable is differential
Device comprising at least one differential compensation unit；
The differential compensation unit includes for carrying the arched elastic steel plate of power cable, front tension bar, back stay and being used for
The differential gear in the same direction being fixed on bridge platform；
The both ends of the arched elastic steel plate are connected in forward and backward shaft, and the both ends of the shaft respectively connect a pulley, institute
The pulley stated is placed on guide rail, and guide rail is used to support pulley；
The front and rear portions of the differential gear in the same direction are separately connected forward and backward pull rod, and the front and rear connecting rods connect with forward and backward shaft respectively
It connects；
Differential gear in the same direction, connecting rod, shaft and the pulley constitutes cooperative motion, and arched elastic steel plate is opened with pivot
It closes.
The present invention is utilizing bridge case（Or on platform）In the case of the confined space, it is wide with bridge cable to provide a kind of built modular
Domain expansion compensation device.
As the supplement of above-mentioned technical proposal, the differential compensation unit further includes two activities in splayed distribution
Brace, activity brace are used to support arched elastic steel plate, and the upper shaft of two activity braces connects, and lower end is connected to forward and backward
In shaft.
As the supplement of above-mentioned technical proposal, the differential gear in the same direction is gear differential mechanism or bar thick stick differential mechanism.
As the supplement of above-mentioned technical proposal, the guide rail is in dually arrayed, is fixed on bridge platform.
As the supplement of above-mentioned technical proposal, the differential compensation unit has multiple, is spliced successively from front to back.
As the supplement of above-mentioned technical proposal, the differential gear in the same direction has the differential factor K of two lateral bracing strut displacements,
Multiple differential compensation units are by logical join at the device for adapting to wide area flexible compensation ability.
As the supplement of above-mentioned technical proposal, when splicing, the differential system of the differential gear in the same direction in each differential compensation unit
Number K, respectively 0,1/2,2/3 ... ... n/ (n+1), n is natural number；One end of the differential compensation unit of K=0 is fixed on bridge seam
On the side bridge platform of gap, the equal both ends of differential compensation unit of other end movement, wherein K=(n-1)/n are differential simultaneously；K=n/
(n+1) one end of differential compensation unit is fixed on the other side bridge platform of bridge beam gap, other end movement.
The present invention another technical solution be：A kind of construction method with the differential change expansion compensation device of bridge cable,
Electric power threephase cable sync equalizing deformation is carried using the elasticity and domes of arch spring steel plate in differential compensation unit, is led to
Pull rod, differential gear in the same direction, shaft, pulley and the guide rail cooperative motion in differential compensation unit are crossed, realization is controllable, is superimposed, is even
The differential compensation of change is continuously spliced by logic with the compensation for adapting to wide area flexible compensation ability by multiple differential compensation units
Device adapts to being compensated with bridge cable expansion for bridge all size expansion joint.
As the supplement of above-mentioned construction method, each differential compensation unit is responsible for the even change of this unit and same compensation
Range, each differential compensation unit need to only preset the differential factor K of this unit differential gear in the same direction；It is real between unit and unit
It is existing continuously coupled, to meet the needs of different compensation ranges.
As the supplement of above-mentioned construction method, the differential compensation unit has multiple, is arranged in the same of bridge beam gap
Side or both sides.
The device have the advantages that as follows：Present invention optimizes structures, have miniaturization, modularization, generalization special
Point can substantially reduce investment outlay.Structure becomes expansion compensation device with bridge cable is differential, flexible with bridge beam gap, has unique
Movement locus, the compensation rate equilibrium of each differential compensation unit occurs, and each arched elastic steel plate folding is consistent, ensure that it
On electric power threephase cable Bending Deformation synchronize uniformly.The present invention solves the different expansion joints at long range bridge floor docking
Change width leads to the frequent engineering problem extended and compress with bridge cable.
Description of the drawings
Fig. 1 is the structural schematic diagram of differential compensation unit of the present invention；
Fig. 2 is the present invention with the differential structural schematic diagram for becoming expansion compensation device of bridge cable；
Fig. 3 is the structural schematic diagram of present invention differential gear in the same direction.
In Fig. 2, by the first differential compensation unit, the second differential compensation unit, third differential compensation unit spliced at flexible
Compensation device.
Differential compensation unit is by arched elastic steel plate, activity brace（Two are arranged in eight words）, pull rod, in the same direction differential dress
It sets, pulley, guide rail, shaft are constituted.One end of first differential compensation unit is fixed on the bridge platform of flexible side, poor in the same direction
Dynamic device also is secured on bridge platform；Four-headed arrow indicates that bridge beam gap stretches back and forth, that is, indicates the opposite of other side bridge
Movement.
In Fig. 3, differential gear in the same direction is fixed on bridge platform.The ratio between the amount of movement △ M and △ N at its both ends are differential
COEFFICIENT K=n/ (n+1), n are natural number 0,1,2,3 ....It is the corresponding first differential compensation unit module of embodiment, second differential
The n that compensating unit module, third differential compensation unit module build expansion compensation device is 0,1,2.K is respectively 0,1/2,2/3.
Specific implementation mode
In order to which the purpose and advantage that make invention are more clearly understood, with reference to embodiments, to of the invention further detailed
Explanation.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
Embodiment 1
As shown in Figure 2 becomes expansion compensation device with bridge cable is differential, by the first differential compensation unit 11, the second differential benefit
Repay unit 12, third differential compensation unit 13 is spliced.
As shown in Figure 1, the differential compensation unit includes for carrying the arched elastic steel plate 1 of power cable 10, preceding
Pull rod 2, back stay 3, the differential gear in the same direction 4 for being fixed on bridge platform and two are in the activity brace of splayed distribution
9。
The both ends of the arched elastic steel plate 1 are connected in forward and backward shaft 5,6, and the both ends of the shaft respectively connect
One pulley 7, the pulley 7 are placed on guide rail 8, and guide rail 8 is used to support pulley 7；
The front and rear portions of the differential gear in the same direction 4 are separately connected forward and backward pull rod 2,3, the front and rear connecting rods 2,3 respectively with it is preceding,
Shaft 5,6 connects afterwards；
Differential gear in the same direction, connecting rod, shaft and the pulley constitutes cooperative motion, and arched elastic steel plate is opened with pivot
It closes.
Activity brace 9 is used to support arched elastic steel plate 1, and the upper shaft of two activity braces 9 connects, and lower end is connected to
In forward and backward shaft 5,6.
The differential gear in the same direction 4 is gear differential mechanism or bar thick stick differential mechanism.The guide rail 8 is in dually arrayed, fixed
On bridge platform.
As shown in figure 3, the differential gear in the same direction has the differential factor K of two lateral bracing strut displacements, multiple differences
Dynamic compensating unit is by logical join at the device for adapting to wide area flexible compensation ability.
In Fig. 2, when four-headed arrow moves right 3X（X is amount of movement）When, i.e. F point displacement 3X, by differential compensation unit 13
Effect, E point displacements will become 2X, E points and D point Hard links, then the displacement of D points is also 2X；It is acted on by differential compensation unit 12,
C point displacements will become X, C points and B point Hard links, then the displacement of B points is also X；A points are fixed, its displacement is forever
Zero.This process be it is simultaneous, therefore, B-A=X, D-C=X, F-E=X, that is to say, that three blocks of arched elastic steel plates it is same
When joint open be X, thereby realize the purpose for the power cable homogeneous deformation being mounted above.
When four-headed arrow is moved to the left 3X（X is amount of movement）When, principle is identical, only becomes to close up process.It repeats no more.
Embodiment 2
The present embodiment provides a kind of with the differential construction method for becoming expansion compensation device of bridge cable, differential using embodiment 1
The elasticity of arch spring steel plate and domes carry electric power threephase cable sync equalizing deformation in compensating unit, pass through differential benefit
Repay pull rod, differential gear in the same direction, shaft, pulley and the guide rail cooperative motion in unit, realize controllable, superposition, even change it is differential
Compensation is continuously spliced into the compensation device for adapting to wide area flexible compensation ability by logic by multiple differential compensation units, is fitted
Answer being compensated with bridge cable expansion for bridge all size expansion joint.
Each differential compensation unit is responsible for the even change of this unit and same compensation range, each differential compensation unit
The differential factor K of this unit differential gear in the same direction need to only be preset；Realized between unit and unit it is continuously coupled, to meet different benefits
Repay the demand of range.
Embodiments of the present invention above described embodiment only expresses, can not be therefore understands that for patent of invention range
Limitation, also not to the present invention structure make any form of restriction.It should be pointed out that for the common skill of this field
For art personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made, these belong to this hair
Bright protection domain.
Claims (10)
1. one kind becoming expansion compensation device with bridge cable is differential, which is characterized in that including at least one differential compensation unit；
The differential compensation unit includes the arched elastic steel plate (1), front tension bar (2), back stay for carrying power cable
(3) and the differential gear in the same direction (4) for being fixed on bridge platform；
The both ends of the arched elastic steel plate (1) are connected in forward and backward shaft (5,6), and the both ends of the shaft respectively connect
One pulley (7), the pulley (7) are placed on guide rail (8), and guide rail (8) is used to support pulley (7)；
The front and rear portions of the differential gear in the same direction (4) are separately connected forward and backward pull rod (2,3), and the front and rear connecting rods (2,3) are respectively
It is connect with forward and backward shaft (5,6)；
Differential gear in the same direction, connecting rod, shaft and the pulley constitutes cooperative motion, and arched elastic steel plate is opened with pivot
It closes.
2. according to claim 1 become expansion compensation device with bridge cable is differential, which is characterized in that the differential benefit
It further includes two activity braces (9) in splayed distribution to repay unit, and activity brace (9) is used to support arched elastic steel plate (1),
The upper shaft of two activity braces (9) connects, and lower end is connected in forward and backward shaft (5,6).
3. according to claim 1 or 2 become expansion compensation device with bridge cable is differential, which is characterized in that described in the same direction
Differential gear (4) is gear differential mechanism or bar thick stick differential mechanism.
4. according to claim 1 or 2 become expansion compensation device with bridge cable is differential, which is characterized in that described leads
Rail (8) is in dually arrayed, is fixed on bridge platform.
5. according to claim 1 or 2 become expansion compensation device with bridge cable is differential, which is characterized in that the difference
Dynamic compensating unit has multiple, is spliced successively from front to back.
6. according to claim 5 become expansion compensation device with bridge cable is differential, which is characterized in that described is in the same direction poor
Dynamic device has the differential factor K of two lateral bracing strut displacements, and multiple differential compensation units are by logical join at adaptation
The device of wide area flexible compensation ability.
7. according to claim 6 become expansion compensation device with bridge cable is differential, which is characterized in that when splicing, each difference
The differential factor K of differential gear in the same direction in dynamic compensating unit, respectively 0,1/2,2/3 ... ... n/ (n+1), n is natural number；K
One end of=0 differential compensation unit is fixed on the side bridge platform of bridge beam gap, other end movement, wherein K=(n-1)/n
The equal both ends of differential compensation unit simultaneously it is differential；One end of the differential compensation unit of K=n/ (n+1) is fixed on the another of bridge beam gap
On the bridge platform of side, other end movement.
8. building described in claim any one of 1-7 with the differential method for becoming expansion compensation device of bridge cable, which is characterized in that
Electric power threephase cable sync equalizing deformation is carried using the elasticity and domes of arch spring steel plate in differential compensation unit, is led to
Pull rod, differential gear in the same direction, shaft, pulley and the guide rail cooperative motion in differential compensation unit are crossed, realization is controllable, is superimposed, is even
The differential compensation of change is continuously spliced by logic with the compensation for adapting to wide area flexible compensation ability by multiple differential compensation units
Device adapts to being compensated with bridge cable expansion for bridge all size expansion joint.
9. construction method according to claim 8, which is characterized in that each differential compensation unit is responsible for the even of this unit
Become and same compensation range, each differential compensation unit need to only preset the differential factor K of this unit differential gear in the same direction；It is single
Member and unit between realize it is continuously coupled, to meet the needs of different compensation ranges.
10. construction method according to claim 8, which is characterized in that the differential compensation unit has multiple, is arranged in
The same side or both sides of bridge beam gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205883.8A CN108385518B (en) | 2018-03-13 | 2018-03-13 | Bridge-following cable differential uniform-variation expansion compensation device and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810205883.8A CN108385518B (en) | 2018-03-13 | 2018-03-13 | Bridge-following cable differential uniform-variation expansion compensation device and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN108385518A true CN108385518A (en) | 2018-08-10 |
| CN108385518B CN108385518B (en) | 2023-09-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110106783A (en) * | 2019-05-31 | 2019-08-09 | 中铁第四勘察设计院集团有限公司 | Bridge structure and construction method on a kind of cable |
| CN111244841A (en) * | 2020-03-20 | 2020-06-05 | 张文彩 | MPP cable protection pipe |
| CN114566924A (en) * | 2021-11-22 | 2022-05-31 | 浙江华云电力工程设计咨询有限公司 | Horizontal type modularization is along with flexible compensation arrangement of bridge cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110106783A (en) * | 2019-05-31 | 2019-08-09 | 中铁第四勘察设计院集团有限公司 | Bridge structure and construction method on a kind of cable |
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| CN111244841A (en) * | 2020-03-20 | 2020-06-05 | 张文彩 | MPP cable protection pipe |
| CN111244841B (en) * | 2020-03-20 | 2021-04-23 | 浙江荣正管业有限公司 | MPP cable protection pipe |
| CN114566924A (en) * | 2021-11-22 | 2022-05-31 | 浙江华云电力工程设计咨询有限公司 | Horizontal type modularization is along with flexible compensation arrangement of bridge cable |
| CN114566924B (en) * | 2021-11-22 | 2023-10-27 | 浙江华云电力工程设计咨询有限公司 | Horizontal modularized bridge-following cable expansion compensation device |
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