Laminated intelligent shock-isolation bearing capable of self-adaptively regulating cutting performance

Abstract

The invention relates to a laminated intelligent shock-isolation bearing capable of self-adaptively regulating cutting performance, the bearing is mainly composed of a magnetic assembly, a sensor (8) and a controller (9), wherein, the magnetic assembly is composed of magnetorheological elastomers (2) which are alternatively overlapped together, have the same shape and are sulfurized as a whole, a magnetically-conducting steel plate (3) and a coil winding (5) which is separated from the magnetorheological elastomers and is wound on a magnetically-conducting iron core (6), all of them are mounted between an upper connecting plate and a lower connecting plate to thereby form a complete closed magnetic circuit; a large deformation soft magnetic material (7) is arranged in the middle of the magnetic circuit; the sensor is mounted on the top of the upper connecting plate (1) and the controller is connected with the sensor and the coil winding via data lines, respectively. The invention can self-adaptively regulates the cutting performance thereof in accordance with external response; compared with ordinary rubber shock-isolation bearing, the bearing has small displacement among shock-isolation layers and strong controllability; and compared with intelligent complex shock-isolation system, the bearing has simple structure and good stability.

Description

technical field [0001] The invention relates to the technical field of structural shock isolation, in particular to a laminated shock-isolation support based on elastic rheological smart materials, whose stiffness and damping can be intelligently adjusted. Background technique [0002] Structural isolation technology is already a well-developed earthquake protection technology. Its shock absorption concept is clear and the effect is obvious. In several major earthquakes, a large number of rubber pad isolation houses and bridges have successfully stood the test. However, under the long-period velocity and displacement pulse earthquakes near the fault, many catastrophic structural failures have occurred in isolated buildings, which has caused some scholars to pay attention to the effectiveness of isolation technology. For example, the Northridge Earthquake Damage Survey on January 17, 1994 found that most of the isolated buildings were damaged under the strong earthquake near ...

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Problems solved by technology

However, near-fault earthquake motions input high energy into the structure at the beginning of the earthquake, and the settlement of the magnetorheological fluid material in the magnetorheological fluid smart damper greatly affects the performance of the intelligent composite isolation system, often Before the magnetorheological fluid recovers from the sedimentation and condensation state to the flow state and the damper can work normally, the seismic action has caused serious damage to the isolation structure

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