A mass-tuned vibration-damping multi-pendulum with air springs and damping particles

Abstract

A mass tuning type vibration reduction multi-pendulum structure with air springs and damping particles mainly comprises a rigid hanging rod, tuning mass balls, the air springs, anchoring bolts, a top hinged seat, reserved filling holes and the damping particles. The device is connected with a structural floor. By using the characteristic that the period, mass, pendulum length and rigidity of the multi-pendulum structure are all related, the mass of the tuning mass balls, the length of each section of the hanging rod, rigidity of the air springs and the overall damping of the damping particles are reasonably set, so that the multiple natural vibration periods of the mass tuning type vibration reduction multi-pendulum structure is equal to or close to the corresponding multi-order period of the structure, and accordingly tuning vibration reduction control over the structural multi-vibration mode is achieved and dynamic response of a structural body under earthquakes and wind loads is reduced.

Description

technical field [0001] The invention relates to a mass-tuned damping multi-pendulum with air springs and damping particles. The multi-mode tuning vibration reduction control, and the collision energy consumption through the damping particles to reduce the structural dynamic response belong to the field of structural vibration reduction. Background technique [0002] At present, with the continuous increase of the height of building structures in our country, the dynamic response and risk of building structures under the action of wind and earthquake are gradually increasing. It is more and more important to select dampers with sufficient damping effect to slow down the vibration of building structures. . The current dampers generally include spring dampers, hydraulic dampers, pulse dampers, viscous dampers, pendulum dampers and traditional TMD dampers. The traditional pendulum damper adjusts its vibration frequency to near the frequency of the main structure to change the ...

AI Technical Summary

Problems solved by technology

But the traditional pendulum damper has its disadvantages: 1) It can only control the response of the first vibration mode of the structure, and the control effect is very sensitive to the frequency of the controlled vibration mode; 2) Within the limited mass range of the traditional pendulum application, the The structural control ability is limited, and the energy dissipation capacity is insufficient; 3) The pendulum damper needs to be tuned to the frequency that resonates with the controlled vibration type response, and the mass stroke of the pendulum damper is usually large; 4) The damping of the traditional pendulum damper is adjustable 5) Limited by the pendulum length, multi-mode control and structural engineering requirements, the traditional suspended pendulum is only suitable for super high-rise structures and long-period structures. Pendulums cannot be used with short-period structures

Images