Double-spin vortex breaking device for inhibiting vortex-induced vibration of steel tube high-rise structure

Abstract

The invention provides a double-spin vortex breaking device for inhibiting vortex-induced vibration of a steel tube high-rise structure. The device comprises two annular bases which are arranged parallelly and vertically, and the outer wall of each base is rotationally sleeved with an annular rotating arm; the outer wall of each rotating arm is fixedly provided with four connecting arms, and the connecting arms are arranged uniformly around the axes of the rotating arms; the upper and lower bases are fixedly connected through rectangular plates, one edges of the rectangular plates are fixedlyconnected with the connecting arms of the upper and lower bases, the corresponding other edges of the rectangular plates are provided with two rotating rods, and the two rotating rods are parallel tothe connecting arms; one ends, away from the rectangular plates, of the rotating rods are rotationally provided with connecting rods, and the other ends of the connecting rods are fixedly provided with four hemispherical shell-shaped wind cups respectively. In short, the double-spin vortex breaking device has the advantages that the vortex-induced vibration of the steel tube high-rise structure generated in the transverse wind direction is inhibited, the safety of the steel tube high-rise structure is improved, and the economic loss is reduced.

Description

technical field [0001] The invention relates to a vortex-induced vibration suppressing device for a towering steel pipe structure, in particular to a dual spin vortex breaking device for suppressing the vortex-induced vibration of a towering steel pipe structure. Background technique [0002] With the continuous development of science and technology, the scale of various substations is increasing, and the voltage level is also increasing, which also makes the height of the substation structure also continue to increase. In order to avoid lightning strikes, towering independent lightning rods are often built in substations in engineering applications. Or install a lightning rod on the substation frame to protect the safety of the equipment. Since the substation frame mostly adopts steel structures, especially circular steel pipes, which are light-weight and high-strength materials, which belong to the towering structure of steel pipes, so under the action of cross-wind force,...

AI Technical Summary

Problems solved by technology

Since the substation frame mostly adopts steel structures, especially circular steel pipes, which are light-weight and high-strength materials, which belong to the towering structure of steel pipes, so under the action of cross-wind force, the two sides of the circular cross-section of steel pipes alternately generate vortices detached from the surface of the structure. When the natural frequency of the vortex is close to the detachment frequency of the vortex, the structure will undergo resonance damage. This phenomenon is called vortex-induced vibration, and the long-term effect of vortex-induced vibration will not only reduce the strength of the towering structure, but even destroy the entire structure in severe cases. Towering structure of steel pipes, causing huge economic losses

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