Comprehensive control device for wind-induced vibration of high-rise structure

Abstract

A high-rise structure is low in rigidity, and large amplitude vibration is easy to cause under the action of wind loads, so that the fatigue damage or fatigue destruction of the structure is caused, and the safe reliability of the structure is reduced. Aiming at the wind-induced vibration of the high-rise structure, the invention develops a comprehensive control device for inhibiting the vibration of the structure. According to the comprehensive control device, a tuning liquid damper (TLD) and a tuning mass damper (TMD) are combined with the device theoretically to exert advantages and draw on merits to offset weaknesses, so that a damping energy consumption effect and output control force can be provided for the high-rise structure to the maximum degree to reduce the vibration of the structure; and a vibration damper is convenient to manufacture, the control force can be adjusted according to the requirements of the structure, and the optimal vibration damping effect is achieved by adjusting a ratio of steel balls and liquid. In addition, the comprehensive control device occupies small space, and is convenient to install, low in cost and easy to overhaul.

Description

Technical field [0001] The invention relates to a comprehensive control device for wind-induced vibration of a high-rise structure, and is particularly suitable for suppressing the vibration response of a high-rise structure in civil engineering under wind. Background technique [0002] Wind disaster is one of several major natural disasters faced by human society, which causes huge loss of life and property to humans every year. The global direct economic losses caused by wind disasters can reach tens of billions of dollars each year. In my country, an average of about 7-8 typhoons or severe tropical storms make landfall each year. Wind disasters have caused serious losses to my country. The damage of civil engineering structures under the action of wind is an important part of the losses caused by wind disasters. [0003] The main loads borne by high-rise structures include structural self-weight, live load for maintenance, wind load and seismic action; due to the low rigidity o...

AI Technical Summary

Problems solved by technology

[0006] In recent years, the research of TMD and TLD has made great progress, and there are many successful application cases in high-rise structures or high-rise structures; but in the vibration process, the shift of the natural frequency of the structure affects the vibration reduction effect of TMD or TLD, which is caused by This proposal uses MTMD to solve the problem, but the effectiveness of each mass block cannot be fully utilized, resulting in a waste of vibration damping devices.

Relevant scholars have proposed the theory of combining TMD and TLD for passive vibration reduction control, but it does not involve the vibration reduction of towering structures under wind-induced vibration, and they all combine TMD and TLD as independent devices

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