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Stay cable vibration damper of cable-stayed bridge

A vibration damping device and a technology for stay cables, which are applied to cable-stayed bridges, bridges, bridge parts, etc., can solve the problems of limited vibration damping effect and difficult damping effect of dampers on stay cables, and achieve good vibration damping effect. Effect

Inactive Publication Date: 2014-02-19
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the damper is too close to the anchorage end, it is difficult for the damper to exert its damping effect on the stay cable to a large extent, and the damping effect is very limited

Method used

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  • Stay cable vibration damper of cable-stayed bridge
  • Stay cable vibration damper of cable-stayed bridge
  • Stay cable vibration damper of cable-stayed bridge

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Experimental program
Comparison scheme
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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings. Such as Figure 3-4 As shown, the present invention is a cylindrical vibration damping device with elasticity, inertia and damping, which is composed of an inner cylinder 1, an outer cylinder 2, a damping element 3, an elastic element 4 and an accessory connector. Several damping elements 3 and elastic elements 4 are installed between the inner cylinder 1 and the outer cylinder 2 . The cable 5 passes through the inner tube 1 in a way of passing through the center and is connected with the inner tube 1 , so as to realize the installation of the vibration damping device on the cable 5 . The inner cylinder 1 and the outer cylinder 2 can be made of metal or non-metallic materials as required, and the damping element 3 and the elastic element 4 can be independent components or composite components with both elastic and damping properties. The outer cylinder 2 is not only th...

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Abstract

The invention discloses a stay cable vibration damper of a cable-stayed bridge. The stay cable vibration damper comprises an inner barrel, an outer barrel, elastic elements and damping elements, wherein the elastic elements are installed between the inner barrel and the outer barrel in the radial direction, the damping elements are installed between the inner barrel and the outer barrel in the radial direction, the number of the elastic elements and the number of the damping elements are multiple, and the multiple sets of the elastic elements and the multiple sets of the damping elements are distributed along the inner barrel in the axial direction. The stay cable vibration damper is a hanging type damping device and does not need supports besides a stay cable, and accordingly the optimal installation position and the optimal installation quantity of the stay cable vibration damper can be selected according to the damping effect, and a better damping effect can be achieved. Corresponding connecting elements exist between the inner barrel and the outer barrel in all directions of the radial direction, transverse vibration of the stay cable in any direction can make the vibration damper to respond and relatively move to consume energy, and therefore the stay cable vibration damper can perform the functions of damping vibration and consuming energy on transverse vibration of the stay cable in any direction.

Description

technical field [0001] The invention relates to a stay cable damping device, in particular to a stay cable damping device for a cable-stayed bridge. Background technique [0002] Cables are widely used in various structures. Among them, the cable stay on the cable-stayed bridge is a typical application. Due to its mechanical and geometric characteristics, stay cables are extremely susceptible to significant vibrations due to wind, earthquake, traffic loads and other factors. This vibration has a relatively large adverse effect on the stay cable itself and the anchoring system at both ends, greatly reducing the durability of the stay cable system and the safety of the structure. In order to suppress and reduce this kind of vibration, the commonly used measure is to install a vibration damper on the stay cable. Installing the damper requires a fulcrum, and the current installation method on the cable-stayed bridge is to install the damper between the lower part of the stay ...

Claims

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Application Information

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IPC IPC(8): E01D11/04E01D19/00
Inventor 孙宗光陈一飞邵元
Owner DALIAN MARITIME UNIVERSITY
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