Self-resetting quasi-zero stiffness shape memory alloy vibration isolator

Abstract

The invention discloses a self-resetting quasi-zero stiffness shape memory alloy vibration isolator. The self-resetting quasi-zero stiffness shape memory alloy vibration isolator comprises a horizontal vibration isolation ring, an upper support, a lower support, an upper sliding block and a lower sliding block. The lower support is located in the upper support, and the horizontal vibration isolation ring is located on the upper plane of the bottom in the lower support and located between the side wall of the lower support and the side wall of the upper support. The lower sliding block is located on the upper plane of the bottom inside the lower support and is in sliding connection with the lower support, the upper sliding block is in sliding connection with the upper part of the lower sliding block, and the upper support is in sliding connection with the upper face of the upper sliding block. The horizontal shock insulation ring is a shape memory alloy rubber horizontal shock insulation ring, the upper plane of the bottom inside the lower support is zero in curvature, and the lower sliding block is tightly attached to the upper plane of the bottom of the interior of the lower support. Transverse seismic oscillation can be effectively isolated, collision between a structure subjected to seismic isolation and a seismic isolation groove retaining wall or the adjacent structure is reduced, and the self-resetting quasi-zero stiffness shape memory alloy vibration isolator has the advantages of being small in rigidity, low in cost and capable of eliminating residual displacement.

Description

Technical field [0001] The present invention relates to the field of seismic and reduced shock, specifically a self-reset zero-cemetery shape memory alloy seismor. Background technique [0002] Based isolation techniques can significantly reduce the seismic energy incoming upper structure, reduce the damage of the earthquake on the upper structure, so long-term promotion and a large number of applications worldwide. On the one hand, since the efficiency of the base isolation is mainly based on the basic cycle of the isolation system. According to the reaction spectrum theory, the longer the cycle of the isolation system, the smaller the acceleration response of the upper structure, but the horizontal displacement of the seismic layer will also increase, which may result in a substrate of the isolation structure and a peripheral seismic groove retaining wall or Other structures collide. The relevant personnel conducted an earthquake response measurement of the 2nd floor base isola...

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Problems solved by technology

[0008] Aiming at the limitation that the existing seismic isolation bearings cannot effectively limit the displacement of the slider under the large earthquake and the residual displacement of the bearing after the earthquake, the present invention proposes a new type of Self-resetting quasi-zero stiffness shape-memory alloy shock isolators provide better performance shock-isolation measures or means for the upper structure

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