CN202081380U - Stay cable structure of cable-stayed bridge - Google Patents
Stay cable structure of cable-stayed bridge Download PDFInfo
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- CN202081380U CN202081380U CN2011201533999U CN201120153399U CN202081380U CN 202081380 U CN202081380 U CN 202081380U CN 2011201533999 U CN2011201533999 U CN 2011201533999U CN 201120153399 U CN201120153399 U CN 201120153399U CN 202081380 U CN202081380 U CN 202081380U
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- damper
- suspension cable
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- stay
- cable
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Abstract
The utility model discloses a stay cable structure of a cable-stayed bridge, which includes stay cables and dampers, wherein every three stay cables form a stay cable group, the three stay cables of every stay cable group are spatially arranged in a triangle, the upper end of the stay cable group is fixed on a bridge tower, and the lower end thereof is fixed on a girder; the damper is mounted between the two stay cables of every stay cable group, every stay cable is connected with the other two stay cables in the same stay cable group through the damper, and the dampers are spatially arranged relative to the stay cables. As every stay cable group consists of three stay cables, and every two stay cables are connected with the damper, under the action of external excitation, the vibration of every stay cable in any direction is limited by the other two stay cables due to the fact that the three spatially-arranged stay cables have different vibration characteristics, thereby achieving the purpose of vibration damping. As the mounting position of the damper can be determined according to the design requirements of vibration damping, the vibration damping effect of the damper can be brought into full play.
Description
Technical field
The utility model relates to a kind of suspension cable of cable stayed bridge beam and arranges and the damping scheme particularly a kind of suspension cable structure of cable stayed bridge beam.
Background technology
The cable stayed bridge beam is Longspan Bridge a kind of form of structure commonly used, and the layout of its suspension cable mostly is layout.Suspension cable is because its stressed and geometric aspects, very easily is subjected to the influence of factors such as wind, earthquake, traffic loading and significant vibration takes place.This vibration causes bigger adverse effect to the anchor system at suspension cable itself and two ends thereof, greatly reduces the durability of suspension cable system and the safety of bridge.In order to suppress and to reduce this vibration, the normal measure of adopting is that damper is installed on suspension cable.Damper is installed needs fulcrum, and present mounting means is that damper is installed between the bottom and bridge floor of suspension cable, as depicted in figs. 1 and 2.In this mounting means, because the too close anchored end of damper, damper is difficult to bring into play largely to the cushioning effect of suspension cable, and effectiveness in vibration suppression is very limited.Obviously, make the bigger effect of damper performance, damper should be installed in the middle part of suspension cable.A kind of possible mode is that the damper two ends are connected on two adjacent suspension cables.But suspension cable all adopts the plane or is similar to layout in the cable stayed bridge at present, and the above-mentioned scheme that damper is installed between adjacent suspension cable can only be controlled the vibration of suspension cable in the rope face, and the outer vibration of uncontrollable rope face.And general rope spacing is bigger, and it is very inconvenient that damper is installed.
Summary of the invention
For solving the problems referred to above that prior art exists, the utility model will design a kind of damper can be installed in any needed position of suspension cable, and while control cord face is interior and the vibration of the outer both direction of rope face, significantly improves the suspension cable structure of damper to the cable stayed bridge beam of the damping effect of suspension cable.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of suspension cable structure of cable stayed bridge beam comprises suspension cable and damper, and per three three skew cables that constitute a suspension cable group, every group of suspension cable of described suspension cable are pressed the triangle space layout, and its upper end is fixed on the bridge tower upper and lower end and is fixed on the girder; Described damper is installed between two skew cables of each suspension cable group, every skew cables all with same suspension cable group in other two skew cables link to each other by damper, make the relative suspension cable of damper form the space and arrange.
Every skew cables in the suspension cable group described in the utility model is parallel to each other.
Every skew cables in the suspension cable group described in the utility model is not parallel to each other mutually.
Every skew cables in the suspension cable group described in the utility model has different vibration characteristics.
Every skew cables in the suspension cable group described in the utility model same position respectively by damper with same group in other two skew cables link to each other, make three dampers constitute a damper group.
The damper group quantity that connects in the suspension cable group described in the utility model is greater than 1.
Compared with prior art, the utlity model has following beneficial effect:
1, because the utility model has been realized the space layout of every group three skew cables, after connecting damper in twos, do the time spent when being subjected to dynamic excitation, because being the space, arrange three skew cables, and vibration characteristics difference, thereby the vibration of any direction of each skew cables all is subjected to the restriction of other two skew cables, thereby realizes the vibration damping purpose.
2, because the installation site of damper can be definite according to the Vibration Absorption Designing requirement in the utility model, can be as required, on one or more positions of one group of suspension cable, arrange damper, can also be as required, the damper quantity of arranging on each position and the setting angle between each damper and the suspension cable are selected and adjusted, to obtain different effectiveness in vibration suppression, bring into play the damping effect of damper to greatest extent.
Description of drawings
4 in the total accompanying drawing of the utility model, wherein:
Fig. 1 is present used a kind of damper arrangement schematic diagram of controlling the suspension cable in plane vibration.
Fig. 2 is at present used a kind of damper arrangement schematic diagram of controlling in the suspension cable face with out-of-plane vibration.
Fig. 3 is that suspension cable of the present utility model is arranged and a kind of typical damper mount scheme schematic diagram wherein.
Fig. 4 is the partial enlarged drawing at A place among Fig. 3.
Among the figure: 1, girder, 2, bridge tower, 3, suspension cable, 4, damper.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
A kind of suspension cable structure of cable stayed bridge beam, comprise suspension cable 3 and damper 4, described suspension cable 3 per three three skew cables 3 that constitute 3 groups, every group suspension cable 3 of a suspension cable are pressed the triangle space layout, and its upper end is fixed on bridge tower 2 upper and lower ends and is fixed on the girder 1; Described damper 4 is installed between two skew cables 3 of each suspension cable group, every skew cables 3 all with same suspension cable group in other two skew cables 3 link to each other by damper 4, make the relative suspension cables 3 of damper 4 form spaces and arrange.
As shown in Figure 3, each suspension cable group is made up of three skew cables 3, and space triangular in shape layout each other can be parallel, also can be not parallel.Distance between three skew cables 3 requires comprehensive definite according to structure and Vibration Absorption Designing.Satisfying under the prerequisite of requirement for bearing capacity, according to the requirement of vibration isolation, by adjust separately relevant parameter as, section area, stretching force, length etc. make the vibration characteristics of three skew cables 3 on the same group keep enough othernesses.
On the basis of above-mentioned suspension cable arrangement, damper 4 is installed between same group two skew cables 3, every skew cables 3 all with same group in other two link to each other by damper 4, make damper 4 relative suspension cables 3 form spaces and arrange.Can select and dispose the technical data of each damper 4 respectively according to the requirement of vibration isolation, and the installation site of determining each damper 4.Can on one or more positions of one group of suspension cable 3, arrange damper 4 as required.Can also be as required, damper 4 quantity of arranging on each position and the setting angle between each damper 4 and the suspension cable 3 are selected and adjusted, to obtain different effectiveness in vibration suppression.Wherein, a kind of typical damper 4 mount schemes of such scheme as shown in Figure 3.Per three dampers 4 are one group in this typical scenario, and on same position, three dampers 4 of one group laterally link to each other three skew cables 3 respectively in twos, and three dampers 4 also are triangularly arranged.The technical data of each damper 4 can be selected respectively and disposes according to the requirement of vibration isolation.One group of suspension cable 3 can be arranged one or more groups damper 4 as required.
Claims (6)
1. the suspension cable structure of a cable stayed bridge beam, comprise suspension cable (3) and damper (4), it is characterized in that: per three three skew cables (3) that constitute a suspension cable (3) group, every group of suspension cable (3) of described suspension cable (3) are pressed the triangle space layout, and its upper end is fixed on bridge tower (2) upper and lower end and is fixed on the girder (1); Described damper (4) is installed between two skew cables (3) of each suspension cable group, every skew cables (3) all with same suspension cable group in other two skew cables (3) link to each other by damper (4), make damper (4) relatively suspension cable (3) form the space and arrange.
2. the suspension cable structure of a kind of cable stayed bridge beam according to claim 1 is characterized in that: the every skew cables (3) in the described suspension cable group is parallel to each other.
3. the suspension cable structure of a kind of cable stayed bridge beam according to claim 1 is characterized in that: the every skew cables (3) in the described suspension cable group is not parallel to each other mutually.
4. the suspension cable structure of a kind of cable stayed bridge beam according to claim 1 is characterized in that: the every skew cables (3) in the described suspension cable group has different vibration characteristics.
5. the suspension cable structure of a kind of cable stayed bridge beam according to claim 1, it is characterized in that: the every skew cables (3) in the described suspension cable group same position respectively by damper (4) with same group in other two skew cables (3) link to each other, make damper group of three dampers (4) formations.
6. the suspension cable structure of a kind of cable stayed bridge beam according to claim 5 is characterized in that: the damper group quantity that connects in the described suspension cable group is greater than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201533999U CN202081380U (en) | 2011-05-13 | 2011-05-13 | Stay cable structure of cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201533999U CN202081380U (en) | 2011-05-13 | 2011-05-13 | Stay cable structure of cable-stayed bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202081380U true CN202081380U (en) | 2011-12-21 |
Family
ID=45342018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201533999U Expired - Lifetime CN202081380U (en) | 2011-05-13 | 2011-05-13 | Stay cable structure of cable-stayed bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202081380U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277831A (en) * | 2011-05-13 | 2011-12-14 | 大连海事大学 | Stay cable structure for cable-stayed bridge |
| CN103711084A (en) * | 2013-12-18 | 2014-04-09 | 长安大学 | Cable-stayed bridge system in construction stage |
| CN112049010A (en) * | 2020-09-09 | 2020-12-08 | 段满红 | Stay cable vibration reduction system |
-
2011
- 2011-05-13 CN CN2011201533999U patent/CN202081380U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277831A (en) * | 2011-05-13 | 2011-12-14 | 大连海事大学 | Stay cable structure for cable-stayed bridge |
| CN102277831B (en) * | 2011-05-13 | 2012-12-26 | 大连海事大学 | Stay cable structure for cable-stayed bridge |
| CN103711084A (en) * | 2013-12-18 | 2014-04-09 | 长安大学 | Cable-stayed bridge system in construction stage |
| CN103711084B (en) * | 2013-12-18 | 2016-08-24 | 长安大学 | A kind of cable-stayed bridge system of construction stage |
| CN112049010A (en) * | 2020-09-09 | 2020-12-08 | 段满红 | Stay cable vibration reduction system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111221 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |