Laminated magneto-rheological high damping elastomer single core support

Abstract

The invention belongs to the field of bridge vibration control in civil engineering, and particularly relates to a laminated magneto-rheological high damping elastomer single core support. The supportcomprises an upper steel disc, a lower steel disc, a laminated supporting mechanism and a lead core arranged at the upper steel plate, and an excitation mechanism arranged at the lower steel disc. The laminated supporting mechanism is cylindrical, and a round hole used for the lead core to penetrate is formed in the center of the laminated supporting mechanism. The laminated supporting mechanismis formed alternate vulcanization of the magneto-rheological elastomer and a steel plate. The excitation mechanism comprises an excitation coil, a reeling bracket and an iron core. The excitation coilis wound to the iron core by the reeling bracket. A round hole is formed in the middle of the iron core, and is used for positioning the lead core. The the lead core is fixed to the middle of the laminated supporting mechanism and the iron core, and therefore the positioning accuracy of the whole structure is guaranteed, and firmness of connection is improved. When shearing deformation of the support occurs, shearing deformation of the whole lead core occurs forced by the laminated supporting mechanism and the iron core, and therefore energy dissipation is achieved, and damping and rigidity of the support is improved overall.

Description

technical field [0001] The invention belongs to the technical field of vibration control of civil engineering bridges, in particular to a laminated magnetorheological high-damping elastic body single-core support. Background technique [0002] Structural seismic isolation refers to the establishment of a seismic isolation layer in the lower part of the structure with a horizontal stiffness much lower than that of the upper structure to block the transmission of earthquake vibrations to the upper structure, thereby greatly reducing the seismic response of the upper structure. Seismic isolation technology not only has a clear concept of shock absorption and is convenient for design and installation, but also can effectively absorb earthquake energy, reduce the horizontal seismic action of structures, and improve the earthquake resistance of buildings. Therefore, compared with the previous seismic design methods of building structures, the advantages of buildings using seismic ...

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Problems solved by technology

However, under the action of large loads (such as plane sudden vibration, earthquake, etc.), there is insufficient initial lateral stiffness, strength, and damping, and the ability to resist damage caused by large horizontal shear forces is weak.

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