Stay cable damper combined with cable force testing

Abstract

The invention discloses a stay cable damper combined with cable force testing. A damper support, a face interior lever, a connecting rod, a damping device and a cable force testing device are included. The damper support comprises a fixing base and a support. The connecting rod penetrates through the face interior lever. The damping device comprises a face interior damping device and a face exterior damping device. The cable force testing device is fixedly arranged at the bottom of the face interior lever and used for detecting and uploading stay cable vibration time interval data and a spectral analysis result. According to the stay cable damper combined with cable force testing, the face interior damping device and the face exterior damping device are separated, parameter optimization can be conducted on the face interior damping coefficient and the face exterior damping coefficient, and the effect of control over the face interior vibration and face exterior vibration at the same time is achieved; through the lever amplification function of the damper structure, vibration signals at the position of a cable clamp are transmitted to the position of the cable force testing device after being amplified, and the cable force testing precision is improved; and meanwhile, installation and later maintenance of the cable force testing device are conducted on the bridge floor, the aerial operation risks are avoided, and safety is improved.

Description

technical field [0001] The invention relates to the technical field of vibration control of bridge structures, in particular to a stay cable damper which takes into account cable force testing. Background technique [0002] As the span of the bridge increases, the stiffness and damping of the bridge become smaller, and the stay cables are prone to severe vibration problems under the external wind, rain and traffic loads. The accumulation of fatigue damage shortens the service life of the cables and causes potential safety hazards for the bridge structure. Therefore, the vibration control of the cables is a problem that every cable-stayed bridge needs to seriously consider, and it is necessary to customize a reasonable damper form and optimize the damping parameters according to the different structural characteristics of the bridge. At the same time, since the cable is an important load-bearing component of the cable-stayed bridge, the abnormality of the cable force of the ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the existing cable vibration monitoring and control structure has the monitoring device and the control structure independently, which leads to inconvenient installation and maintenance of the monitoring device and low measurement accuracy of the monitoring device.

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