CN203890902U - External prestressed cable vibration reduction device - Google Patents
External prestressed cable vibration reduction device Download PDFInfo
- Publication number
- CN203890902U CN203890902U CN201420305334.5U CN201420305334U CN203890902U CN 203890902 U CN203890902 U CN 203890902U CN 201420305334 U CN201420305334 U CN 201420305334U CN 203890902 U CN203890902 U CN 203890902U
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- China
- Prior art keywords
- inner sleeve
- prestressing tendon
- external prestressing
- sleeve
- round
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- Expired - Fee Related
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- Bridges Or Land Bridges (AREA)
Abstract
An external prestressed cable vibration reduction device comprises two outer cleadings, two inner cleadings, multiple vibration reduction springs and a pull rod. The outer cleadings and the inner cleadings are semi-circular, the two outer cleadings are spliced together to form a round outer sleeve, the two inner cleadings are spliced together to form a round inner sleeve, the diameter of the round outer sleeve is larger than that of the round inner sleeve, the round outer sleeve and the round inner sleeve are arranged concentrically, the vibration reduction springs are arranged between the outer circumference of the round inner sleeve and the inner circumference of the round outer sleeve, and one end of the pull rod is connected with the outer circumference of the round outer sleeve. The vibration reduction device has the advantages of obviously preventing random vibration of an external prestressed cable and guaranteeing that the reinforcing effect of the external prestressed cable is effective for a long time.
Description
Technical field
The utility model relates to a kind of structure and reinforces punishment technology, relates in particular to a kind of external prestressing tendon vibration absorber.
Background technology
In recent years, external prestressing technology, with himself advantage, has been widely used in the stabilization works of old bridge, numerous engineering practices prove, utilize the old bridge of external prestressing strengthening, can significantly improve structural bearing capacity and crack resistance, effectively improve the stress state of structure.External prestressing tendon length can reach tens rice up to a hundred, rigidity is little, self damping is little, under the excitation of vehicular load and wind load, easily there is strong vertical oscillation crosswise, this vibration is remarkable all the more along with the increase of Suo Changdu, if it is not suppressed, will affect stress performance and the application life of external prestressing tendon.
Utility model content
For the problem in background technology, the utility model proposes a kind of external prestressing tendon vibration absorber, its structure is: described external prestressing tendon vibration absorber is comprised of two flags, two inner sleeve plates, a plurality of shock-absorbing spring and pull bars; Described flag and inner sleeve plate are semicircle; Two flags formation round jacket that is stitched together, two inner sleeve plates are stitched together and form circular inner sleeve, and the diameter of round jacket is greater than circular inner sleeve, and round jacket and circular inner sleeve arrange with one heart; A plurality of shock-absorbing springs are arranged between the outer peripheral face of circular inner sleeve and the inner peripheral surface of round jacket; Pull bar one end is connected with the outer peripheral face of round jacket.
Principle of the present utility model is: external prestressing tendon is set in circular inner sleeve, adopt anchoring means that pull bar outer end is fixed, by round jacket, circular inner sleeve and the formed damping unit of shock-absorbing spring, can effectively increase the circumferential damping that external prestressing tendon is subject to, the random vibration that suppresses external prestressing tendon, guarantees that the consolidation effect of external prestressing tendon is permanently effective.In addition, round jacket and circular inner sleeve all adopt two cage plates to be spliced, and can be convenient to vibration absorber to be arranged on outside external prestressing tendon; When using external prestressing tendon vibration absorber, can select according to the length of external prestressing tendon the quantity of vibration absorber, if external prestressing tendon length is shorter, prestressed cable middle part arranges a vibration absorber in vitro, if external prestressing tendon length is longer, on prestressed cable, at interval of certain distance, a vibration absorber is just set in vitro.
Anchor structure for anchoring rod can adopt following two kinds of preferred embodiments: scheme one, and the other end of described pull bar is anchored on structure by an anchor plate; For bridge, pull bar directly can be anchored on bridge rib; Scheme two, the quantity of described external prestressing tendon vibration absorber is 2, and the pull bar of two external prestressing tendon vibration absorbers is connected to each other, and this mode utilizes two vibration absorbers to carry out mutually anchoring, than last scheme, the destructiveness of two pairs of structures of scheme is less.
For the ease of the length of adjusting yoke, the utility model has also been done following improvement: described pull bar is comprised of many connecting rods and a plurality of branch sleeve; In described branch sleeve, be provided with screwed hole, described connecting rod end is provided with external screw thread, and connecting rod is threaded with branch sleeve, between every two connecting rods, by branch sleeve, connects.During Specific construction, can rationally determine the quantity of connecting rod according to the actual span between external prestressing tendon and vibration absorber anchor point, then with branch sleeve, connecting rod be coupled together.
Useful technique effect of the present utility model is: can significantly suppress the random vibration of external prestressing tendon, guarantee that the consolidation effect of external prestressing tendon is permanently effective.
Accompanying drawing explanation
Fig. 1, structural representation of the present utility model;
Fig. 2, use state diagram one of the present utility model;
Fig. 3, use state diagram two of the present utility model;
Fig. 4, Tiebar structure schematic diagram;
In figure, the corresponding title of each mark is respectively: flag 1, inner sleeve plate 2, shock-absorbing spring 3, pull bar 4, connecting rod 4-1, branch sleeve 4-2, anchor plate 5.
The specific embodiment
An external prestressing tendon vibration absorber, described external prestressing tendon vibration absorber is comprised of two flags 1, two inner sleeve plates 2, a plurality of shock-absorbing spring 3 and pull bars 4; Described flag 1 and inner sleeve plate 2 are semicircle; Two flags 1 formation round jacket that is stitched together, two inner sleeve plates 2 are stitched together and form circular inner sleeve, and the diameter of round jacket is greater than circular inner sleeve, and round jacket and circular inner sleeve arrange with one heart; A plurality of shock-absorbing springs 3 are arranged between the outer peripheral face of circular inner sleeve and the inner peripheral surface of round jacket; Pull bar 4 one end are connected with the outer peripheral face of round jacket.
Further, the other end of described pull bar 4 is anchored on structure by an anchor plate 5.
Further, the quantity of described external prestressing tendon vibration absorber is 2, and the pull bar 4 of two external prestressing tendon vibration absorbers is connected to each other.
Further, described pull bar 4 is comprised of many connecting rod 4-1 and a plurality of branch sleeve 4-2; In described branch sleeve 4-2, be provided with screwed hole, described connecting rod 4-1 end is provided with external screw thread, and connecting rod 4-1 is threaded with branch sleeve 4-2, between every two connecting rod 4-1, by branch sleeve 4-2, connects.
Claims (4)
1. an external prestressing tendon vibration absorber, is characterized in that: described external prestressing tendon vibration absorber is comprised of two flags (1), two inner sleeve plates (2), a plurality of shock-absorbing spring (3) and pull bar (4); Described flag (1) and inner sleeve plate (2) are semicircle; Two flags (1) formation round jacket that is stitched together, two inner sleeve plates (2) are stitched together and form circular inner sleeve, and the diameter of round jacket is greater than circular inner sleeve, and round jacket and circular inner sleeve arrange with one heart; A plurality of shock-absorbing springs (3) are arranged between the outer peripheral face of circular inner sleeve and the inner peripheral surface of round jacket; Pull bar (4) one end is connected with the outer peripheral face of round jacket.
2. external prestressing tendon vibration absorber according to claim 1, is characterized in that: the other end of described pull bar (4) is anchored on structure by an anchor plate (5).
3. external prestressing tendon vibration absorber according to claim 1, is characterized in that: the quantity of described external prestressing tendon vibration absorber is 2, and the pull bar of two external prestressing tendon vibration absorbers (4) is connected to each other.
4. external prestressing tendon vibration absorber according to claim 1, is characterized in that: described pull bar (4) is comprised of many connecting rods (4-1) and a plurality of branch sleeve (4-2); In described branch sleeve (4-2), be provided with screwed hole, described connecting rod (4-1) end is provided with external screw thread, and connecting rod (4-1) is threaded with branch sleeve (4-2), between every two connecting rods (4-1), by branch sleeve (4-2), connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420305334.5U CN203890902U (en) | 2014-06-10 | 2014-06-10 | External prestressed cable vibration reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420305334.5U CN203890902U (en) | 2014-06-10 | 2014-06-10 | External prestressed cable vibration reduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203890902U true CN203890902U (en) | 2014-10-22 |
Family
ID=51717324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420305334.5U Expired - Fee Related CN203890902U (en) | 2014-06-10 | 2014-06-10 | External prestressed cable vibration reduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203890902U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638311A (en) * | 2016-11-15 | 2017-05-10 | 湖南科技大学 | Multi-cable compounded damping cable |
| CN110485267A (en) * | 2019-09-03 | 2019-11-22 | 哈尔滨工业大学（深圳） | A kind of adhesion type self-tuning mass damper and its application method based on shear thickening liquid |
| CN111622133A (en) * | 2020-05-20 | 2020-09-04 | 中国国家铁路集团有限公司 | Bridge external pre-tightening force reinforcing system and mounting method thereof |
-
2014
- 2014-06-10 CN CN201420305334.5U patent/CN203890902U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638311A (en) * | 2016-11-15 | 2017-05-10 | 湖南科技大学 | Multi-cable compounded damping cable |
| CN110485267A (en) * | 2019-09-03 | 2019-11-22 | 哈尔滨工业大学（深圳） | A kind of adhesion type self-tuning mass damper and its application method based on shear thickening liquid |
| CN111622133A (en) * | 2020-05-20 | 2020-09-04 | 中国国家铁路集团有限公司 | Bridge external pre-tightening force reinforcing system and mounting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20150610 |
|
| EXPY | Termination of patent right or utility model |