Sling vibration reduction mechanism of large-span suspension bridge
A vibration damping mechanism and suspension bridge technology, applied in bridges, bridge parts, bridge construction, etc., can solve problems such as poor safety and durability, improve reliability and stability, solve vibration problems, and eliminate psychological anxiety.
Inactive Publication Date: 2014-06-04
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of poor safety and durability of the suspension cable vibration damping structure of the existing large-span suspension bridge, and provide a suspension cable vibration damping mechanism of the large-span suspension bridge
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[0013] Such as figure 1 shown. The suspension cable vibration damping mechanism of the large-span suspension bridge of the present invention comprises a main cable 3, a cable clamp 2 and a sling 1 connected to the cable clamp 2; 6. The lug plate 5 fixedly connected with the cable clamp 2; one side of the damper 6 is connected to the divider 8 through the divider connecting rod 7, and the other side of the damper 6 is connected through the lug plate connecting rod 9 Lug plate 5.
[0014] The lug plate connecting rod 9 is connected with the lug plate 5 through a pin 10 .
[0015] The damper 6 can be a viscous shear damper, and of course, it can also be a damper of various other forms capable of damping vibration.
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The invention discloses a sling vibration reduction mechanism of a large-span suspension bridge. The sling vibration reduction mechanism comprises a main cable, a sling clip, slings, a separator, a damper and a lifting lug plate. The slings are connected with the sling clip; the separator is used for separating the slings from each other, and the lifting lug plate is fixedly connected with the sling clip; one side of the damper is connected with the separator by a separator connecting rod, and the other side of the damper is connected with the lifting lug plate by a lifting lug plate connecting rod. The sling vibration reduction mechanism with the structure has the advantages that fundamental vibration frequencies of the slings and modal damping of the slings can be increased, so that vibration energy can be dissipated, the slings cannot meet vibration starting conditions, and the problem of vibration of existing slings can be fundamentally solved.
Description
technical field [0001] The invention relates to the technical field of bridge vibration reduction, in particular to a suspension cable vibration reduction mechanism of a large-span suspension bridge. Background technique [0002] In long-span suspension bridges, the sling is the most important structural component. The upper end of the sling is connected to the main cable through the cable clamp, and the lower end is fixed to the stiffening beam through the anchor head. The dead weight of the bridge deck system such as live load and stiffening beam is transmitted through the sling As for the main cable, its reliability directly affects the safety of the bridge deck. With the increase of the span of the structure, the flexible long cable with the characteristics of low natural frequency and small damping is likely to generate large vibration under the traffic load and environmental excitation. If the vibration of the sling is not eliminated or controlled, it is very difficult...
Claims
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Inventor 王荣辉陈黎谷利雄
Owner SOUTH CHINA UNIV OF TECH
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