Mass tuned grain damper

Abstract

The invention relates to a mass tuned grain damper and belongs to the field of building shock absorption. The mass tuned grain damper comprises a damper cavity, damping grain groups, a one-way hinge system and a resetting spring, wherein the damping grain groups are uniformly placed in the damper cavity; an embedded part in a building structure or bridge structure is fixedly connected to the damper cavity by the one-way hinge system; and the resetting spring is arranged outside the damper cavity, thereby forming a substructure with a certain mass and a certain natural frequency of vibration. Under the effect of wind and / or an earthquake, the mass tuned grain damper can oscillate back and forth along the arrangement direction of the resetting spring so as to tune the natural frequency of vibration of the structure. Under the actions of the rolling or sliding, friction and colliding of the damping grain groups in the damper cavity, the kinetic energy of the structure can be transferred and consumed, the distribution additional damping is supplied to the structure in a flexible and scattered arranging mode, thereby restraining the structure vibration and ensuring the structure safety.

Description

technical field [0001] The invention relates to a particle damper with tuning quality and frictional collision energy consumption function by setting a one-way hinge system and a return spring that can swing along the main direction of structural vibration, and belongs to the technical field of anti-seismic, shock-absorbing and wind-resistant structural engineering. Background technique [0002] The tuned mass damper (TMD) or tuned liquid damper (TLD) vibration reduction control technology developed rapidly in recent years has attracted widespread attention due to its characteristics of small changes to the original structure, simple construction, and remarkable vibration damping effect. The tuning system is a shock-absorbing control system that sets inertial mass at the position where the structure vibrates greatly or adds flowing liquid inside the subsidiary structure, and is equipped with springs and dampers to control the dynamic displacement or acceleration of the struct...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the traditional tuned mass damper has a narrow tuning frequency band, setting an energy-dissipating damper is expensive, the installation position is not flexible, only provides additional damping to the local structure, and may cause excessive local stress of the structure, the present invention proposes a A kind of particle damper with tuning mass and friction collision energy dissipation function by setting a one-way hinge system and a return spring that can swing along the main direction of structural vibration

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