Lever mass damping system for controlling stay cable vibration

A mass damping and cable-stayed technology, applied in cable-stayed bridges, bridge parts, bridge forms, etc., can solve the problems of reducing volume, affecting lateral stiffness, reducing brackets, etc.

Pending Publication Date: 2019-08-23
CHINA RAILWAY BRIDGE SCI RES INST LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the defects existing in the prior art, the object of the present invention is to provide a lever mass damping system for controlling the vibration of the stay cable, which has a good damping effect and reduces the volume at the same time, and solves the problem of reducing the size of the bracket. The problem that affects its lateral stiffness

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  • Lever mass damping system for controlling stay cable vibration
  • Lever mass damping system for controlling stay cable vibration

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Embodiment Construction

[0025] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] see figure 1 As shown, the embodiment of the present invention provides a lever mass damping system for controlling the vibration of a stay cable, which includes a fixing part 1 , a connecting part 2 , a damping device 3 , a support 5 and an L-shaped lever 4 . Wherein, the fixing part 1 is used to connect with the stay cable, and one end of the connecting part 2 is hinged with the fixing part 1; the damping device 3 includes a first damper 30 and a second damper 31, and the support 5 is provided with an accommodating cavity, the second A damper 30 and a second damper 31 are both arranged in the accommodating cavity, and the second damper 31 is connected with the end of the connecting piece 2 away from the fixing piece 1; the L-shaped lever 4 includes a first lever arm 40 and a second lever arm 40. Lever arm 41, the length of the first l...

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PUM

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Abstract

The invention discloses a lever mass damping system for controlling stay cable vibration. The system comprises a fixing member, a connecting member, a damping device, a support and an L-shaped lever;the fixing member is used for being connected with a stay cable, and one end of the connecting member is hinged to the fixing member; the damping device comprises a first damper and a second damper, and the second damper is connected to one end of the connecting member; the support is internally provided with a containing cavity used for containing the damping device; and the lever comprises a first lever arm and a second lever arm, the length of the first lever arm is larger than the length of the second lever arm, one end of the second lever arm is connected with the connecting member, one end of the first lever arm is connected to the first damper, and a vertex angle of the lever is fixed to the support. By means of the lever mass damping system, the size is decreased while the vibration damping effect is better, and the problem that the transverse stiffness is influenced by reducing the volume of the support is solved.

Description

technical field [0001] The invention relates to the technical field of bridge vibration control, in particular to a lever mass damping system for controlling the vibration of stay cables. Background technique [0002] With the continuous improvement of bridge design and construction technology, the longest span cable-stayed-suspension collaborative system bridge that has been built so far has a maximum main span of 1408 meters, and the length of its longest cable is close to 600 meters, the wind resistance performance of the stay cables becomes one of the main factors controlling the design of the bridge. In order to control the vibration of the cables, the use of external dampers is a practical and effective way. Since the vibration direction of the cables is related to the excitation direction of the wind load, the cables of many cable-stayed bridges have both vertical in-plane vibration, There is also out-of-plane vibration in the direction of the transverse bridge. In o...

Claims

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Application Information

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IPC IPC(8): E01D19/16E01D11/04
CPCE01D19/16E01D11/04
Inventor 汪正兴柴小鹏肖海珠张燕飞郑清刚刘德清李东超李荣庆王泽豪桂贵盛能军尹琪赵海威吕江高天张汉卫陶金峰
Owner CHINA RAILWAY BRIDGE SCI RES INST LTD
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