friction damper

Abstract

The invention belongs to the technical field of anti-seismic technology of building facilities, and in particular relates to a friction damper for anti-seismic of cable-stayed cables, which comprises a dynamic friction unit arranged on the cable-stayed bridge cable and synchronously vibrating with the cable-stayed cable, and relative to the body of the cable-stayed bridge A fixed static friction unit, the dynamic friction unit forms a sliding friction fit with the static friction unit along any direction in a plane perpendicular to the axis of the cable. The dynamic friction unit on the cable can form a sliding friction fit with the static friction unit on the bridge body in any direction. When the cable vibrates, relative friction will be generated between the dynamic friction unit and the tight friction unit, which can buffer and absorb any diameter of the cable The vibration in the direction provides full-degree-of-freedom damping for the cable, which greatly improves the anti-vibration performance of the cable.

Description

technical field [0001] The invention belongs to the technical field of vibration reduction of building facilities, and in particular relates to a friction damper used for anti-vibration of cable stays. Background technique [0002] As a classic design in the field of bridge construction, cable-stayed bridges have been widely used. However, cable-stayed bridges themselves have some defects that cannot be ignored. With the continuous development of bridge construction technology, higher requirements have been put forward for the stability of cable-stayed bridges. requirements. Cable-stayed bridges are generally used on rivers or seas with large exaggeration, and are more affected by wind force. Excessive wind force will cause the cable-stayed locks to vibrate, which will affect the stability of the bridge and seriously threaten the safety of driving and pedestrians on the bridge deck. Aiming at the vibration problem of the cable-stayed lock, various anti-seismic methods have ...

AI Technical Summary

Problems solved by technology

Common types of dampers in the prior art include hydraulic dampers, magnetic dampers, viscous dampers, etc. However, the above-mentioned dampers all have a common defect that the degree of freedom is relatively low, and the damper can only absorb a single direction Vibration or vibration in a limited number of specific directions cannot absorb vibration in any radial direction of the cable, and at the same time, the damping in each direction is uneven, and it is difficult to achieve the expected shock absorption effect

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