Vertical tuning damping/vibration reducing device with quasi-zero stiffness characteristic

Abstract

The invention discloses a vertical tuning damping / vibration reducing device with a quasi-zero stiffness characteristic. The vertical tuning damping / vibration reducing device comprises an outer sleeve, a vertical quasi-zero stiffness spring set, a tuning mass component, a viscous damper and a loading limiting rod. The loading limiting rod is borne on the vertical quasi-zero stiffness spring set, and the vertical quasi-zero stiffness spring set provides nonlinear elastic restoring force for the loading limiting rod; the two ends of the viscous damper are connected with the main body controlled structure and the loading limiting rod correspondingly, vibration energy is absorbed through relative deformation of the viscous damper and the loading limiting rod, and the vibration amplitude of the main body controlled structure is reduced. The tuned mass component is connected to the bottom end of the loading limiting rod and supports the vertical quasi-zero stiffness spring set. The outer sleeve is located on the outer layer of the loading limiting rod and the outer layer of the vertical quasi-zero stiffness spring set, and the outer sleeve is provided with a connecting part connected with the main body controlled structure. The non-linear stiffness characteristic of the vertical quasi-zero stiffness spring set is utilized, the control bandwidth range of the device is widened, and the earthquake and vibration double-control effect of the structural floor slab and the vertical flexible structure is achieved.

Description

technical field [0001] The invention relates to the technical field of earthquake disaster protection and vibration control, in particular to a vertically tuned shock absorption / vibration device with quasi-zero stiffness characteristics. Background technique [0002] Earthquake is a multi-dimensional action, and its vertical vibration component has a great influence on the building structure floor. Because the natural vibration period of the floor is much smaller than the vertical members such as walls and columns of the structure, it has amplifying effect on the vertical ground motion. Although the amplification of the earthquake action of the floor slab will not have a decisive impact on the earthquake damage of the structure, the research shows that the vertical vibration is the main factor causing damage to non-structural components, such as floor decoration ceilings, ventilation pipelines, and electrical furniture in the house. With the rapid development of urban rail ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a vertically tuned shock absorber / vibration device with quasi-zero stiffness characteristics to solve the problems of non-structural component damage caused by vertical earthquakes and environmental vibration control of vertically flexible structures

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