CN102277831B - Stay cable structure for cable-stayed bridge - Google Patents
Stay cable structure for cable-stayed bridge Download PDFInfo
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- CN102277831B CN102277831B CN 201110125329 CN201110125329A CN102277831B CN 102277831 B CN102277831 B CN 102277831B CN 201110125329 CN201110125329 CN 201110125329 CN 201110125329 A CN201110125329 A CN 201110125329A CN 102277831 B CN102277831 B CN 102277831B
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- damper
- cable
- suspension cable
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- stay
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- 239000000725 suspension Substances 0.000 claims description 69
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005755 formation reaction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000013016 damping Methods 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000005284 excitation Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract 1
- 238000002955 isolation Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
本发明公开了一种斜拉桥梁的斜拉索结构，包括斜拉索和阻尼器，所述的斜拉索每三根构成一个斜拉索组、每组斜拉索的三根斜拉索按三角形空间布置，其上端固定在桥塔上、下端固定在主梁上；所述的阻尼器安装在每一个斜拉索组的两根斜拉索之间，每根斜拉索都与同一个斜拉索组中的另外两根斜拉索通过阻尼器相连，使阻尼器相对斜拉索形成空间布置。本发明实现了每组三根斜拉索的空间布置，两两连接阻尼器后，当受外界激励作用时，由于三根斜拉索呈空间布置，且振动特性不同，因而，每一根斜拉索任何方向的振动都受到另外两根斜拉索的制约，从而实现减振目的。由于阻尼器的安装位置可根据减振设计要求确定，可最大限度地发挥阻尼器的减震效果。
The invention discloses a cable-stayed structure of a cable-stayed bridge, which comprises a cable-stay and a damper. Every three cable-stay cables constitute a cable-stay group, and the three cable-stay cables in each group of cable-stay cables form a triangle Spatial arrangement, the upper end of which is fixed on the bridge tower, and the lower end is fixed on the main girder; the damper is installed between the two stay cables of each stay cable group, and each stay The other two stay cables in the stay cable group are connected through a damper, so that the damper forms a spatial arrangement relative to the stay cables. The present invention realizes the spatial arrangement of three stay cables in each group. After two two stay cables are connected to the damper, when subjected to external excitation, since the three stay cables are arranged in space and have different vibration characteristics, each stay cable Vibration in any direction is restricted by the other two stay cables for vibration damping purposes. Since the installation position of the damper can be determined according to the design requirements of vibration reduction, the shock absorption effect of the damper can be maximized.
Description
Technical field
The suspension cable that the present invention relates to a kind of cable stayed bridge beam is arranged 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 mostly the layout of its suspension cable is layout.Suspension cable is because its stressed and geometric aspects, very easily receives 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, and is 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, the bigger effect of damper performance be made, the middle part of suspension cable should be damper be installed in.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 present invention 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, technical scheme of the present invention is following:
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 through damper, make the relative suspension cable of damper form spatial placement.
Every skew cables in the suspension cable group of the present invention is parallel to each other.
Every skew cables in the suspension cable group of the present invention is not parallel to each other mutually.
Every skew cables in the suspension cable group of the present invention has different vibration characteristics.
Every skew cables in the suspension cable group of the present invention same position respectively through damper with same group in other two skew cables link to each other, make damper group of three dampers formation.
The damper group quantity that connects in the suspension cable group of the present invention is greater than 1.
Compared with prior art, the present invention has following beneficial effect:
1, because the present invention has realized the spatial placement of every group three skew cables; After connecting damper in twos, when receiving dynamic excitation to do the time spent, because three skew cables are spatial placement; And vibration characteristics is different; Thereby the vibration of any direction of each skew cables all receives 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 among the present invention; 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 present invention, wherein:
Fig. 1 is present used a kind of damper arrangement sketch map of controlling the suspension cable in plane vibration.
Fig. 2 is at present used a kind of damper arrangement sketch map of controlling in the suspension cable face with out-of-plane vibration.
Fig. 3 is that suspension cable of the present invention is arranged and a kind of typical damper mount scheme sketch map 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 present invention 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 through damper 4, make the relative suspension cables 3 of damper 4 form spatial placement.
As shown in Figure 3, each suspension cable group is made up of three skew cables 3, and spatial placement triangular in shape 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, through adjustment relevant parameter separately 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 through damper 4, make damper 4 relative suspension cables 3 form spatial placement.Can select and dispose the technical data of each damper 4 respectively according to the requirement of vibration isolation, and the installation site of confirming 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 are 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 through damper (4), make damper (4) relatively suspension cable (3) form spatial placement.
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 through 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 |
|---|---|---|---|
| CN 201110125329 CN102277831B (en) | 2011-05-13 | 2011-05-13 | Stay cable structure for cable-stayed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110125329 CN102277831B (en) | 2011-05-13 | 2011-05-13 | Stay cable structure for cable-stayed bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102277831A CN102277831A (en) | 2011-12-14 |
| CN102277831B true CN102277831B (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110125329 Expired - Fee Related CN102277831B (en) | 2011-05-13 | 2011-05-13 | Stay cable structure for cable-stayed bridge |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI548796B (en) * | 2013-12-30 | 2016-09-11 | Univ Chienkuo Technology | Oblique bridge cable vibration dampers |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3012479B1 (en) * | 2013-10-31 | 2016-01-01 | Soletanche Freyssinet | CABLES VIBRATION DAMPING DEVICE OF AN ART WORK SUSPENSION SYSTEM |
| CN104631322B (en) * | 2015-01-29 | 2016-08-31 | 哈尔滨工业大学 | A kind of passive spring-damper negative stiffness antivibrator of pulling cable damping |
| CN104674644B (en) * | 2015-02-05 | 2016-09-07 | 中铁大桥科学研究院有限公司 | The vibration control apparatus of a kind of sling of suspension bridge and method |
| CN106638311A (en) * | 2016-11-15 | 2017-05-10 | 湖南科技大学 | Multi-cable compounded damping cable |
| CN108252200B (en) * | 2018-01-31 | 2019-08-09 | 华中科技大学 | A cable-stayed permanent magnet eddy current damper with variable power |
| CN114855592B (en) * | 2022-04-24 | 2023-11-21 | 中铁大桥勘测设计院集团有限公司 | Parameter calculation method of connecting device between stay cable and sling |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000328517A (en) * | 1999-05-17 | 2000-11-28 | Hayakawa Rubber Co Ltd | Cable damping device |
| CN1458347A (en) * | 2002-05-15 | 2003-11-26 | 柳州市建筑机械总厂 | Single stay tensing construction method and apparatus for parallel twisted steel stay system |
| WO2005050054A1 (en) * | 2003-11-19 | 2005-06-02 | Motioneering Inc. | Stay cable damper |
| CN1867736A (en) * | 2003-10-14 | 2006-11-22 | Aas-杰克博森公司 | Bridge structure comprising tower, bridge beam, main/suspension cable, suspending bars, and diagonal cable-stays |
| CN101672006A (en) * | 2009-09-25 | 2010-03-17 | 威胜利工程有限公司 | Stay cable |
| CN101709566A (en) * | 2009-10-14 | 2010-05-19 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Mass damping device of flexible connection space lever of stay cable |
| CN202081380U (en) * | 2011-05-13 | 2011-12-21 | 大连海事大学 | Stay cable structure of cable-stayed bridge |
-
2011
- 2011-05-13 CN CN 201110125329 patent/CN102277831B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000328517A (en) * | 1999-05-17 | 2000-11-28 | Hayakawa Rubber Co Ltd | Cable damping device |
| CN1458347A (en) * | 2002-05-15 | 2003-11-26 | 柳州市建筑机械总厂 | Single stay tensing construction method and apparatus for parallel twisted steel stay system |
| CN1867736A (en) * | 2003-10-14 | 2006-11-22 | Aas-杰克博森公司 | Bridge structure comprising tower, bridge beam, main/suspension cable, suspending bars, and diagonal cable-stays |
| WO2005050054A1 (en) * | 2003-11-19 | 2005-06-02 | Motioneering Inc. | Stay cable damper |
| CN101672006A (en) * | 2009-09-25 | 2010-03-17 | 威胜利工程有限公司 | Stay cable |
| CN101709566A (en) * | 2009-10-14 | 2010-05-19 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Mass damping device of flexible connection space lever of stay cable |
| CN202081380U (en) * | 2011-05-13 | 2011-12-21 | 大连海事大学 | Stay cable structure of cable-stayed bridge |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI548796B (en) * | 2013-12-30 | 2016-09-11 | Univ Chienkuo Technology | Oblique bridge cable vibration dampers |
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| Publication number | Publication date |
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| CN102277831A (en) | 2011-12-14 |
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Granted publication date: 20121226 Termination date: 20160513 |