Three-dimensional seismic isolation device

Abstract

The invention discloses a three-dimensional seismic isolation device which is fixedly connected to a structure bottom plate. The three-dimensional seismic isolation device comprises a cylindrical base fixed on the structure bottom plate; a first iron core and a second iron core are mounted from bottom to top inside the base in an overlapping mode, wherein coils are wound on the first iron core and the second iron core; and two poles with same electromagnetism polarity of the first iron core and the second iron core are oppositely arranged. Limiting steps for mounting a positioning frame are arranged in the base, an opening is formed in the bottom face of the positioning frame, the opening is downward buckled outside the second iron core, and a horizontal seismic isolation supporting seat is fixed on the top face of the positioning frame. The horizontal seismic action and vertical seismic action are isolated or controlled by comprehensively utilizing the magnetic levitation technology and the horizontal seismic isolation supporting seat, and the risk that deviation or inclination of an superstructure occur due to an uneven magnetic field is prevented by utilizing the cylindrical base, three-dimensional seismic isolation of the building structure is realized, and the loss caused by earthquakes is reduced.

Description

technical field [0001] The invention relates to the technical field of shock isolation and protection of building structures, in particular to a three-dimensional shock isolation device. Background technique [0002] Earthquake is one of the common natural disasters. A strong earthquake will seriously damage the building structure and cause a large number of casualties. In terms of seismic isolation of building structures, friction pendulum bearings, laminated rubber bearings, and disc spring bearings have been relatively mature and widely used. However, friction pendulum bearings, laminated rubber bearings, etc. generally only consider the horizontal earthquake action, and seldom consider the vertical earthquake action, so they can only weaken the horizontal earthquake action. The disc spring bearing can only absorb energy to a certain extent. Reduce the threat of vertical earthquake action to the building structure. The above-mentioned passively controlled seismic isolat...

AI Technical Summary

Problems solved by technology

At present, magnetic suspension vibration isolation technology has been successfully applied to aerospace, precision instruments, transportation and other fields, but its technology is vibration isolation rather than vibration isolation, and vibration isolation equipment in civil engineering has not yet been used

[0004] The application publication number is CN 101481933A, and the Chinese invention patent application dated July 15, 2009 discloses an anti-shock method for building structures. When the method uses magnetic levitation repulsion to suspend the structure under normal conduction conditions, since the magnetic field itself does not Uniform, the upper structure will shift or tilt, but the patent application does not provide horizontal correction measures, so it is difficult to achieve a relatively stable state in seismic isolation

Images