Annular liquid damper

Abstract

The invention discloses an annular liquid damper mainly used for damping a steel chimney. The annular liquid damper comprises at least two layers of annular liquid damper bodies vertically connected in series, each annular liquid damper body is composed of one or more water tanks, and each water tank comprises a tank body, a horizontal damping net and a vertical damping net, wherein the horizontal damping net is fixed to the inner side wall of the tank body, one end of the vertical damping net is fixed to the bottom of the tank body, the other end of the vertical damping net is fixed to the horizontal damping net, and tuning liquid is contained in the water tank. As the horizontal damping net and the vertical damping net are added into each water tank, the damping ratio of the TLD (tuned liquid damper) is increased, and the TLD meets the optimal damping ratio requirement needed by the steel chimney; meanwhile, two or more layers of water tanks vertically connected in series are adopted according to structural stress calculation, and therefore the annular liquid damper can be used for damping a steel chimney with the diameter of 25 m or more.

Description

technical field [0001] The invention relates to a tuned liquid damper, in particular to an annular liquid damper which can obtain the best damping effect, has low manufacturing cost and is mainly used for chimney damping. Background technique [0002] In recent years, with the continuous and in-depth research on the structure's earthquake resistance and disaster reduction, the new type of damper has gradually attracted people's attention. Among them, the tuned liquid damper (Tuned Liquid Damper, TLD for short) system is composed of the water tank and the liquid in the water tank. When the main structure is excited to vibrate, it will cause the liquid in the TLD tank to slosh and form waves on the surface of the liquid. The sloshing liquid and waves will generate a dynamic pressure difference on the TLD tank wall. At the same time, the liquid movement will also cause inertial force, dynamic pressure difference and The resultant force of the liquid inertial force is opposite ...

AI Technical Summary

Problems solved by technology

The damping ratio of the water tank installed with this liquid in the existing RS-TLD system is less than 1%, and the damping ratio of the system installed with this liquid will decrease with the increase of the liquid depth ratio, and its value is between 0.5% and 0.8 %, it is difficult to meet the requirements of the optimal damping ratio; in addition, the existing RS-TLD system is composed of one or several annular water tanks, if the weight of the liquid in the water tank is not enough, usually only for the 25m height The steel chimney has a good vibration reduction effect. For steel chimneys between 25m and 150m, generally the volume of the water tank is increased to obtain a larger damping ratio. increases, and is difficult to lift and install

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