Segmented type intelligent vibration isolator with impact resistance property

Abstract

The invention discloses a segmented type intelligent vibration isolator with an impact resistance property, and relates to the technical field of vibration isolation and reduction of civil engineeringstructures. The segmented type intelligent vibration isolator with the impact resistance property comprises a rubber vibration isolation layer, an MRA vibration isolation layer and an interlayer plate shell impact resistance layer, wherein the rubber vibration isolation layer is composed of an upper cover plate, a support column A, a limit ring column A, a ring steel plate, rubber and a cylindrical partition plate; the MRA vibration isolation layer is composed of a cylindrical partition plate, a support column B, a limit ring column B, a circular steel plate, MRE, a coil A and an intermediatecover plate; the interlayer plate shell impact resistance layer is composed of an immediate cover plate, an upper magnetic isolation plate shell, a lower magnetic guide plate shell, a lower magneticisolation plate shell, a magnetic guide plate, a magnetic guide gasket, a support column C, a coil B and a lower cover plate; and the rubber vibration isolation layer, the MRE vibration isolation layer and the interlayer plate shell impact resistance layer together form the segmented type intelligent vibration isolator with the impact resistance property. A three-section design is adopted, the rigidity of the vibration isolator is continuously and uniformly changed, the vibration isolation and reduction of various excitation under the small and large displacement can be realized, and meanwhile, the design of a controllable interlayer arc-shaped plate shell enables the vibration isolator to resist the impact force and dissipate the impact energy under the condition of large load impact.

Description

Technical field [0001] The present invention mainly relates to the technical field of vibration isolation and vibration reduction of civil engineering structures, and in particular to an intelligent shock isolator with impact resistance based on magnetorheological materials and shear thickening materials. Background technique [0002] The engineering structure will vibrate under the action of earthquake. Excessive structural vibration will not only affect the normal use of the structure, but also cause the damage or even collapse of the main structure. The traditional seismic design is mainly "to overcome rigidity with rigidity", which ensures the seismic safety of the structure by improving the strength and deformation capacity of structural members. With the development of society, the use of seismic isolation technology makes people have higher and higher requirements for the safety and stability of the structure. At present, the commonly used basic seismic isolation and damp...

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Problems solved by technology

[0005] Chinese patent (application number: 201710182094.2) discloses the "composite structure magnetorheological elastomer shock isolator" combined with the characteristics of controllable shear modulus and compression modulus of the elastic body, and makes full use of the controllable stiffness of the elastic body Sex, and has a certain strength of bearing capacity, but its energy dissipation capacity is poor

Chinese patent (application number: 201510044266.0) disclosed "shear mode magnetorheological elastomer frequency conversion vibration isolator" can realize multi-frequency vibration isolation in multi-frequency state through elastic body movement, but it cannot resist impact load

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