A stay cable external particle damping device

A particle damping, external technology, applied to bridge parts, bridges, buildings, etc., can solve problems such as poor vibration damping effect, achieve vertical vibration suppression, improve energy consumption efficiency, and high energy consumption efficiency

Active Publication Date: 2020-07-28
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tuned mass damper can only have a certain vibration reduction effect in a specific frequency band range, and the vibration reduction effect for frequencies deviating from this frequency band is not good.

Method used

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  • A stay cable external particle damping device
  • A stay cable external particle damping device
  • A stay cable external particle damping device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] A stay cable external particle damping device, such as figure 1 As shown, the damper includes a cable hoop assembly, two damping devices and a flywheel crank mechanism; wherein, the cable hoop assembly and the damping device are connected by a support frame 5, and the damping device and the flywheel crank mechanism are connected by a flywheel The crank 14 is connected, and the flywheel crank mechanism is placed horizontally, and is in the same plane as the two damping devices.

[0032] Cable tie assemblies such as figure 2 As shown, it is assembled by two cable hoops 2 with bolt connection holes and bolt connector 3, and the stay cable 1 is enclosed in the cable hoop assembly. The device also includes two connecting pieces under the device. The sheet is connected with the supporting frame 5 through the pin shaft 4 . The inner wall of the cable clamp assembly is also covered with a resin or rubber pad.

[0033] The damping device includes a damper cylinder 6, such as...

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PUM

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Abstract

The invention relates to an external particle damping device for a stay cable. The external particle damping device includes a stay cable tightening assembly, two damping device bodies and a flywheelcrank mechanism, wherein the stay cable tightening assembly and the damping device bodies are connected by adopting supporting frames (5), the damping device bodies and the flywheel crank mechanism are connected through flywheel cranks (14), and the flywheel crank mechanism is horizontally placed and is in a same plane as the two damping device bodies. Compared with the prior art, the external particle damping device has a simple structure, a providing carrier taking reliable, durable and inexpensive particles as are additional damping is adopted, the advantages of a tuned mass damper and a particle damper are combined, energy is consumed through tuning mass and particle friction and collision, and the cost for arranging a traditional damper is reduced, so that the advantages of higher applicability and economy are achieved.

Description

technical field [0001] The invention relates to the field of bridge vibration control, in particular to an external particle damping device for stay cables. Background technique [0002] With the continuous development of modern bridge engineering technology, the design of bridges tends to be light and low damping. The cable vibration problem of cable-stayed bridges has long troubled engineering designers. The field observation data from the Japan Structural Engineering Society shows that cable-stayed The vibration amplitude of the cable may reach 5-10 times of the cable diameter. The long-term vibration will cause the material fatigue of the stay cable, affect the normal use of the bridge, and may even cause a safety accident of the whole bridge. In order to suppress the vibration of the cable stay, many experts have researched and practiced the additional cable vibration damper, using the modal damping principle of increasing a certain order or multi-order vibration of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/00
CPCE01D19/00
Inventor 鲁正张家伟范俏巧
Owner TONGJI UNIV
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