Base isolation non-contact limit system

Abstract

A base isolation non-contact limit system belongs to the technical field of shock reduction and shock isolation in an engineering structure, and includes a limit magnet I (5), a limit magnet II (6) and a counter force support (7), wherein the counter force support (7) is connected with a base; the limit magnet II (6) is anchored onto the counter force support (7); the limit magnet I (5) is anchored onto a shock isolation layer upper floor system(8); N poles or S poles of the limit magnet I (5) and the limit magnet II (6) are opposite; and distance is reserved between the limit magnet I (5) and the limit magnet II (6). According to the homo-polar repulsion principle of the magnet, counter force is generated between the magnets to limit and control displacement of a shock isolation layer within a safe range, so that damage to the shock isolation layer and other auxiliary devices can be avoided.

Description

technical field [0001] The invention relates to a base isolation non-contact limit system using the principle of magnet homosexual repulsion, which belongs to the field of engineering structure damping and isolation technology, and is mainly used for the protection of base isolation devices of buildings such as houses and bridges . Background technique [0002] There are two most commonly used forms of foundation isolation structure, one is rubber bearing isolation structure, and the other is sliding isolation structure. Due to its excellent performance in earthquakes, it is more and more widely used. When investigating the earthquake-isolated buildings after the earthquake, it was found that the earthquake-isolation layer collided with the foundation. Due to the irregularity of the seismic wave, the low-frequency part of the earthquake wave has the possibility of resonating with the structure, so that the earthquake-isolation layer The displacement exceeds the original des...

AI Technical Summary

Problems solved by technology

The first two limit measures, due to the high contact stiffness during the collision, will bring impact to the shock-isolation layer, and when the impact is large, it will cause structural damage; the third measure, because the rubber layer When it is thick, the deformation is large, and it cannot play a limiting effect. When the rubber layer is thin, after the rubber layer is compressed, it will still bring impact to the upper structure

Images