Stay cable end elastic constraint vibration controlling device

Abstract

The invention relates to a stay cable end elastic constraint vibration controlling device, which belongs to the stay cable vibration damping technology field. The device is composed of a fixed pulley,a groove, a rolling shaft, a stay cable, an elastic constraint and a stay cable bearing; the elastic constraint is composed of a spring and a damper by parallel connection; the fixed pulley is fixedon the stay cable bearing, has rolling shafts respectively disposed on both ends of the center, and a groove formed on the surface; one end of the stay cable passes the fixed pulley through the groove, and is connected to one end of the elastic constraint; the other end of the elastic constraint is fixed. The invention avoids the influence of the stay cable vibration damping device to the whole appearance of the cable structure, avoids the defect of connection rigidity of transverse vibration damper, and guarantees the stability of the vibration damper. The elastic constraint is convenient formanufacturing, mounting, maintaining and replacing, and has lower cost. By adjusting spring rigidity and damping value of the damper, the invention can achieve the best vibration damping effect.

Description

Vibration control device with elastic restraint at the end of cable technical field The invention belongs to the technical field of cable vibration reduction, and in particular relates to an elastic restraint vibration control device at the end of a cable. Background technique With the continuous development of computer technology and finite element analysis, the combination of steel cables and other materials or other structural forms has formed a new growth point of spatial structure, greatly enriching the scope of spatial structure, such as the cable-membrane structure and cable-membrane structure developed in the past 10 years. Net structure, tensegrity structure, cable-arch structure, etc. However, due to the large flexibility, small mass and small damping of the cable, it is easy to cause large-scale vibrations under the external environment excitation or external load, such as vortex induced vibration, wind and rain induced vibration, parametric vibration and intern...

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Problems solved by technology

However, all the shock absorbers are arranged laterally near the stay cable support, and the damping effect is related to the installation position of the shock absorber. The farther the shock absorber is installed from the stay cable support, the greater the vibration reduction effect Good, but this affects the overall appearance of the structure, and requires the connection stiffness of the shock absorber to increase, which increases the manufacturing cost of the shock absorber connection components

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