CN112832129B - Built-in damping device of stay cable - Google Patents
Built-in damping device of stay cable Download PDFInfo
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- CN112832129B CN112832129B CN202110026313.4A CN202110026313A CN112832129B CN 112832129 B CN112832129 B CN 112832129B CN 202110026313 A CN202110026313 A CN 202110026313A CN 112832129 B CN112832129 B CN 112832129B
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- stay cable
- damper
- dampers
- cable
- damping device
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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
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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Abstract
The invention relates to the technical field of damping vibration attenuation, in particular to a stay cable built-in damping device, which comprises: the connecting disc, the cable clamp and at least two dampers which are arranged at set angles. The connecting disc is used for being connected with the steel guide pipe and sleeved on the stay cable; the cable clamp is used for being sleeved on the stay cable and is provided with a connecting lug plate; at least two dampers which are set at set angles, one end of each damper is connected with the connecting lug plate, and the other end of each damper is connected with the connecting disc. This scheme can solve among the prior art unable realization control a plurality of directions and produce the vibration, especially can't produce the problem of damping outside the face.
Description
Technical Field
The invention relates to the technical field of damping vibration attenuation, in particular to a stay cable built-in damping device.
Background
With the development of a large-span cable-stayed bridge, the stay cable has the problems of long length, large flexibility and small damping, and is easy to vibrate in a wind environment. The vibration direction of the stay cable is generally vertical to the wind direction, and when the external wind load is basically parallel to the axial direction of the bridge, the stay cable generates obvious out-of-plane vibration (transverse bridge vibration).
The existing cases show that the out-of-plane vibration of the plane of the stay cable occurs, and the effects of the traditional built-in damping rings which are applied more are basically consistent in all directions, but the damping performance is limited. The external shock absorber needs to be arranged between the stay cable and the box girder, and certain influence is caused on the bridge landscape, so that the built-in damping shock absorption mode that the viscous damper with smaller volume is arranged between the stay cable steel guide pipe and the waterproof cover is a better solution, but better damping shock absorption effects are required to be ensured inside and outside the plane.
The chinese patent CN 106609493B, "stay cable built-in damping vibration-damping device", adopts two viscous dampers arranged symmetrically and installed in a support connecting cylinder connected with a bridge embedded pipe to control the vibration of the stay cable.
However, when the cable starts to vibrate out of the plane, the damper rotates as a whole, the transverse damping force component of the damper approaches 0, and the out-of-plane vibration damping effect cannot be exerted.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a stay cable built-in damping device which can solve the problem that the prior art cannot control vibration in multiple directions, and particularly cannot damp vibration outside the face.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a stay cable built-in damping device, comprising:
the connecting disc is used for being connected with the steel guide pipe and sleeved on the stay cable;
the cable clamp is used for being sleeved on the stay cable and is provided with a connecting lug plate;
at least two dampers which are set at set angles, one end of each damper is connected with the connecting lug plate, and the other end of each damper is connected with the connecting disc.
In some optional embodiments, the damper comprises three dampers arranged in a triangle, and the connecting ear plate comprises a first ear plate and a second ear plate, wherein two dampers are rotatably connected with the first ear plate, and the other damper is connected with the second ear plate.
In some alternative embodiments, three of the dampers are angled relative to each other.
In some alternative embodiments, the first and second ear plates are symmetrically disposed about the cable clamp.
In some alternative embodiments, the first ear plate has a length greater than the second ear plate, the two damper ends are pivotally connected to the first ear plate, and the other damper side wall is connected to the second ear plate.
In some optional embodiments, the damper is connected with the connecting disc through a connecting lug arranged on the connecting disc.
In some optional embodiments, the damper further comprises a connecting casing sleeved outside the damper and connected with the connecting disc.
In some optional embodiments, the connecting plate is a flange plate, and includes an upper flange and a lower flange, the upper flange is connected with the connecting casing, and the lower flange is used for connecting with the steel guide pipe.
In some optional embodiments, the cable-stayed connector further comprises a waterproof cover, one end of the waterproof cover is used for being sleeved on the stay cable, and the other end of the waterproof cover is sleeved on the connecting casing.
In some optional embodiments, a rubber pad is further arranged between the cable clamp and the stay cable.
Compared with the prior art, the invention has the advantages that: when the damping device with the built-in stay cable is used, the connecting disc is connected with the steel guide pipe and sleeved on the stay cable, and a gap is reserved between the connecting disc and the stay cable. The cable clamp is sleeved on the stay cable, one end of two or more dampers arranged at a set angle is connected with the connecting lug plate on the cable clamp, and the other end of each damper is rotatably connected with the connecting disc. In the arrangement mode, the vibration generated in each direction can be damped by two or more dampers arranged at set angles, the damping effect can be exerted on the inclined stay cable in the plane and out of the plane, and the problem that the parallel arrangement mode only can exert the effect on the internal vibration of the plane is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a three-dimensional schematic diagram of a device for arranging two dampers in an embodiment of the present invention;
FIG. 2 is an axial schematic view of an apparatus for arranging two dampers in an embodiment of the present invention;
FIG. 3 is a schematic lateral view of an apparatus for deploying two dampers in an embodiment of the present invention;
FIG. 4 is a three-dimensional schematic diagram of a device for arranging three dampers in the embodiment of the present invention;
FIG. 5 is an axial view of an apparatus for arranging three dampers in an embodiment of the present invention;
FIG. 6 is a schematic lateral view of an apparatus for arranging three dampers in an embodiment of the present invention.
In the figure: 1. a connecting disc; 11. an upper flange; 12. a lower flange; 13. connecting the support lug; 2. a steel conduit; 3. a stay cable; 4. a cable clamp; 41. connecting the ear plates; 411. a first ear plate; 412. a second ear panel; 5. a damper; 6. connecting the protective cylinder; 7. a waterproof cover; 8. a pin shaft; 9. and (7) a rubber pad.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings. Fig. 1 is a three-dimensional schematic diagram of a device for laying two dampers in an embodiment of the present invention, and fig. 4 is a three-dimensional schematic diagram of a device for laying three dampers in an embodiment of the present invention, as shown in fig. 1 and 4: this scheme provides a built-in damping device of suspension cable, includes: the connecting disc 1, the cable clamp 4 and at least two dampers 5 arranged at set angles.
The connecting disc 1 is used for being connected with the steel guide pipe 2 and sleeved on the stay cable 3; the cable clamp 4 is used for being sleeved on the stay cable 3, and the connecting lug plate 41 is arranged on the cable clamp 4; one end of each damper 5 is connected with the connecting lug plate 41, and the other end is rotatably connected with the connecting disc 1.
When the damping device with the built-in stay cable is used, the connecting disc 1 is connected with the steel guide pipe 2 and sleeved on the stay cable 3, and a gap is reserved between the connecting disc 1 and the stay cable 3. The cable clamp 4 is sleeved on the stay cable 3, one end of two or more dampers 5 arranged at set angles is connected with a connecting lug plate 41 on the cable clamp 4, and the other end is rotatably connected with the connecting disc 1. The arrangement mode can play a role in damping vibration in the plane and out of the plane of the stay cable, and the problem that the parallel arrangement mode only can play a role in damping vibration in the plane is solved.
FIG. 2 is an axial schematic view of an apparatus for arranging two dampers in an embodiment of the present invention; FIG. 3 is a schematic lateral view of an apparatus for deploying two dampers in an embodiment of the present invention; as shown in fig. 1, 2 and 3, in some embodiments, two dampers are arranged in a limited arrangement space by using a certain angle alpha, the angle is 60-90 degrees, and the damping component force of the dampers outside the plane is increased. Assuming that the total damping force generated by the damper is F, the included angle of the damper is alpha, the component of the transverse damping force is F · sin (alpha/2), and the component of the vertical damping force is F · cos (alpha/2). Alpha belongs to [ pi/3, pi/2 ], the transverse damping force component is between 0.5F and 0.707F, the vertical damping force component is between 0.707F and 0.866F, and the logarithmic damping attenuation rate of vibration reduction in two directions can meet the requirement.
FIG. 5 is an axial schematic view of an apparatus for arranging three dampers in an embodiment of the present invention; FIG. 6 is a schematic lateral view of an apparatus for arranging three dampers in an embodiment of the present invention. In some alternative embodiments, as shown in fig. 4, 5 and 6, the stay cable built-in damper further comprises three dampers 5 arranged in a triangle, and the connecting ear plate 41 comprises a first ear plate 411 and a second ear plate 412, wherein two dampers 5 are rotatably connected with the first ear plate 411, and the other damper 5 is connected with the second ear plate 412.
In the present embodiment, three dampers 5 are attached to the connection plate 1 by the first lug plate 411 and the second lug plate 412, so that the three dampers 5 are arranged in a triangular shape, and vibration damping action can be exerted on the stay cable 3 in each direction. In other embodiments, of course, other arrangements may be adopted, and a greater number of dampers 5 may be provided to achieve the vibration damping effect on each stay cable 3 in the vibration direction.
In some alternative embodiments, the three dampers 5 are at an angle of 60 degrees to each other. In the present embodiment, the three dampers 5 are arranged at an angle of 60 degrees from each other, so that the dampers can damp vibration in all directions of the stay cable 3.
In alternative embodiments, the first ear plate 411 and the second ear plate 412 are symmetrically disposed about the cord clamp 4.
In alternative embodiments, the first ear plate 411 has a length greater than the length of the second ear plate 412, the ends of the two dampers 5 are pivotally connected to the first ear plate 411, and the side wall of the other damper 5 is connected to the second ear plate 412.
In this embodiment, the ends of the two dampers 5 are rotatably connected to the longer first ear plate 411, and the shorter second ear plate 412 is connected to the middle of the other damper 5, so that the three dampers 5 are arranged in a triangular shape, and vibration reduction of vibration in all directions is realized.
In some alternative embodiments, the damper 5 is connected to the connecting plate 1 through a connecting lug 13 provided on the connecting plate 1. In this embodiment, one end of the damper 5 connected to the connection pad 1 rotates through the connection lug 13, so that both ends of the damper 5 are hinged, and the out-of-plane vibration of the stay cable 3 can be better adapted.
A joint bearing is arranged in the connecting support lug 13, one end of the damper 5 is connected with a first lug plate 411 and a second lug plate 412 which are welded on the cable clamp, the other end of the damper is connected with the connecting support lug 13 which is welded on the upper flange 11 through a pin shaft, wherein a sleeve is arranged on the second lug plate 412 and is connected with the middle part of the corresponding damper 5.
In some optional embodiments, the stay cable built-in damping device further comprises a connecting casing 6 which is sleeved outside the damper 5 and is connected with the connecting disc 1. In this embodiment, the damper 5 is protected by providing the connection casing 6 outside the damper 5, and the service life of the damper is prolonged.
In some alternative embodiments, the connecting plate 1 is a flange plate, which includes an upper flange 11 and a lower flange 12, the upper flange 11 is connected to the connecting casing 6, and the lower flange 12 is used for connecting the steel conduit 2. In this embodiment, the steel guide pipe 2 and the connecting casing 6 are connected by using the connection mode of the upper flange and the lower flange, so that the disassembly and assembly efficiency can be improved, and broken parts can be conveniently replaced. In some optional embodiments, the stay cable built-in damping device further comprises a waterproof cover 7, one end of the waterproof cover 7 is used for being sleeved on the stay cable 3, and the other end of the waterproof cover is sleeved on the connecting casing 6. In this embodiment, the stay cable 3 is sleeved with the waterproof cover 7 and connected with the connecting casing 6 to cover all the dampers 5, which is beneficial to protecting the dampers 5 and preventing the dampers 5 from being corroded by rainwater.
In some alternative embodiments, a rubber pad is further disposed between the cable clamp 4 and the stay cable 3. In this embodiment, the damper may be a viscous damper, a magnetorheological damper, or other form of damper having a form factor disposed within the space of the attachment sleeve. A rubber pad is arranged between the cable clamp 4 and the stay cable 3, so that the mutual rotation between the cable clamp 4 and the stay cable 3 can be avoided, and the vibration reduction effect is not influenced.
In addition, the cable clamp 4 is divided into two semicircles which are fixed on the corresponding positions of the stay cables 3 through bolting, and a rubber pad 9 is padded between the cable clamp 4 and the stay cables 3 to prevent the outer PE sheath of the stay cable from being damaged in the vibration reduction process; the lower flange 12 is welded at the end of the steel guide pipe and is connected and fastened with the upper flange 11 through bolts; the upper flange 11 is divided into a left semicircle and a right semicircle which are connected by bolts; the upper flange 11 is welded with a connecting support lug 13 which is connected with the damper 5 through a pin shaft 8, and the other end of the damper 5 is fixedly connected with a connecting double-lug plate welded on the cable clamp 4 through the pin shaft 8. The connecting casing 6 is arranged on the outer side of the flange plate and is fixedly connected with the flange plate through bolts.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in this application, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A stay cable built-in damping device is characterized by comprising:
the connecting disc (1) is used for being connected with the steel guide pipe (2) and sleeved on the stay cable (3);
the cable clamp (4) is sleeved on the stay cable (3), and a connecting lug plate (41) is arranged on the cable clamp (4);
the three dampers (5) are arranged in a triangular shape, one end of each damper (5) is connected with the connecting lug plate (41), and the other end of each damper is connected with the connecting disc (1);
connect otic placode (41) including first otic placode (411) and second otic placode (412), the length of first otic placode (411) is greater than the length of second otic placode (412), the position of setting of first otic placode (411) and second otic placode (412) is about cable clamp (4) symmetry, two of them attenuator (5) are connected with first otic placode (411), another the middle part lateral wall of attenuator (5) with second otic placode (412) are connected.
2. The stay cable built-in damping device according to claim 1, wherein: the three dampers (5) mutually form included angles of 60 degrees.
3. The stay cable built-in damping device according to claim 1, wherein: the damper (5) is rotatably connected with the connecting disc (1) through a connecting lug (13) arranged on the connecting disc (1).
4. The stay cable built-in damping device according to claim 1, wherein: the damper is characterized by further comprising a connecting protective cylinder (6) which is sleeved on the outer side of the damper (5) and connected with the connecting disc (1).
5. The stay cable built-in damping device according to claim 4, wherein: the connecting disc (1) is a flange disc and comprises an upper flange (11) and a lower flange (12), the upper flange (11) is connected with the connecting casing (6), and the lower flange (12) is used for being connected with the steel guide pipe (2).
6. The stay cable built-in damping device according to claim 4, further comprising a waterproof cover (7), wherein one end of the waterproof cover (7) is used for being sleeved on the stay cable (3) and the other end thereof is sleeved on the connecting casing (6).
7. The stay cable built-in damping device according to claim 1, wherein: a rubber pad (9) is arranged between the cable clamp (4) and the stay cable (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110026313.4A CN112832129B (en) | 2021-01-08 | 2021-01-08 | Built-in damping device of stay cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110026313.4A CN112832129B (en) | 2021-01-08 | 2021-01-08 | Built-in damping device of stay cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112832129A CN112832129A (en) | 2021-05-25 |
| CN112832129B true CN112832129B (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110026313.4A Active CN112832129B (en) | 2021-01-08 | 2021-01-08 | Built-in damping device of stay cable |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100741555B1 (en) * | 2006-07-26 | 2007-07-20 | 케이블텍 주식회사 | Cable damper assembly |
| CN103469728B (en) * | 2013-09-25 | 2016-08-24 | 无锡市弘谷振控技术有限公司 | External stayed cable damping device |
| CN106609493B (en) * | 2016-12-30 | 2018-08-10 | 无锡市弘谷振控技术有限公司 | Stay cable internal damping device |
| CN108221669B (en) * | 2018-02-09 | 2023-10-20 | 柳州欧维姆机械股份有限公司 | Built-in cable vibration damper |
| CN210194417U (en) * | 2019-04-03 | 2020-03-27 | 柳州东方工程橡胶制品有限公司 | External vibration damper of suspension cable |
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2021
- 2021-01-08 CN CN202110026313.4A patent/CN112832129B/en active Active
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| CN112832129A (en) | 2021-05-25 |
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