Self-resetting sliding seismic isolation bearing of cross-shaped multi-layer friction plates

Abstract

The invention relates to a self-resetting sliding seismic isolation bearing of cross-shaped multi-layer friction plates; the self-resetting sliding seismic isolation bearing comprises a top plate, a C-shaped steel plate and a bottom plate, wherein the top plate and the bottom plate are square; four edges of the top plate and the bottom plate are respectively connected with the C-shaped steel plate in a tangential way and form a cavity; double-faced friction plates in a plurality of layers are formed in the cavity; the double-faced friction plates have unequal sizes; the seismic isolation bearing is integrally cross-shaped; the top plate and the bottom plate are single-faced friction plates; and anchoring bolts are respectively arranged at the top of the top plate and the bottom of the bottom plate. The self-resetting sliding seismic isolation bearing of the cross-shaped multi-layer friction plates, provided by the invention, is mounted at the bottom of a building and has the advantages as follows: larger vertical rigidity and horizontal rigidity are obtained, normal use of the building can be guaranteed, and living comfort and safety performance are enhanced. Through the adoption of a full-metal designing method, the working temperature range of the rubber seismic isolation bearing is effectively enlarged, the durability of the rubber seismic isolation bearing is effectively improved, and the durability problem of the rubber seismic isolation bearing is effectively solved. Good elastic restoring force is obtained in each horizontal direction, so that a seismic isolation structure system has a good instantaneous and automatic resetting function.

Description

technical field [0001] The invention relates to a vibration control device for a building structure, in particular to a cross-shaped multi-layer friction plate self-resetting sliding shock-isolation support for building structure vibration control. Background technique [0002] Earthquake disasters are sudden and devastating, which seriously threaten the safety of human life and property. Nearly a thousand destructive earthquakes occur every year in the world, and a major earthquake can cause hundreds of billions of dollars in economic losses, resulting in hundreds of thousands of deaths or serious injuries. my country is located in the two most active seismic belts in the world, and is one of the countries that suffered the most serious earthquake disasters. The casualties caused by the earthquake rank first in the world, and the economic loss is also very huge. The massive destruction and collapse of buildings in earthquakes is the direct cause of earthquake disasters. W...

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Problems solved by technology

[0003] At the beginning of the 20th century, the calculation method proposed by Professor Omori Fangyoshi and the seismic coefficient method proposed by Dr. Sano Toshiki did not consider the dynamic characteristics of the structure. Later, it was called the static theory of seismic design. The building structure, that is, "rigid structural system", but this kind of structural system is difficult to realize, and it is not economical. Only a very small number of important buildings adopt this structural system

[0006] However, it is difficult for some sliding isolation bearings to realize the automatic reset of the structure after the earthquake without using other equipment.

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