Fire prevention and seismic isolation support device and fire prevention and seismic isolation method under earthquake action

Abstract

The invention discloses a fire prevention and seismic isolation support device and a fire prevention and seismic isolation method under the earthquake action. A seismic isolation support comprises a rubber layer and an interlayer steel plate which are spaced and stacked up and down, a support core penetrates through the middle of the seismic isolation support from top to bottom, a shake cushioningand fire prevention protective layer surrounds the periphery of the seismic isolation support, the Fire prevention and seismic isolation support device and fire prevention and seismic isolation method under earthquake action is of a net structure and comprises a plurality of fire prevention balls used as net structure nodes, and adjacent fire prevention balls are connected through rigid springs;each fire prevention ball comprises a ball shell and a shape memory alloy block arranged in the center of the ball shell, the part, around the shape memory alloy block, of the ball shell is filled with a fire prevention coating, and coating overflow holes are distributed on the surface of the fire prevention ball; the gap between the shake cushioning and fire prevention protective layer and the seismic isolation support is filled with fire prevention rock wool. The fire prevention and seismic isolation support device has good fire prevention performance, can realize a normal seismic isolationeffect to ensure safety of buildings in case of fires; damage of the seismic isolation support structure and seismic isolation failure due to earthquake shake can be avoided, and lasting protection can be provided for buildings.

Description

technical field [0001] The invention relates to a fire-proof and shock-isolation support device and a fire-proof and shock-isolation method under earthquake action, belonging to the field of shockproof and disaster reduction of building structures. Background technique [0002] In recent years, there have been many earthquakes with large magnitudes and destructive degrees in my country. For example, the Wenchuan Ms 8.0 earthquake caused a total of nearly 90,000 deaths or missing, and the Lushan Ms 7.0 earthquake caused a total of 196 people were killed and 21 people were missing. With the rapid development of my country's national economy, the number of earthquake-isolated buildings in my country has increased rapidly in recent years. According to the statistics of the China Survey and Design Association, as of December 2016, the number of earthquake-isolated buildings in the country exceeded 3,000. The realization of the shock absorption effect of a seismically isolated bui...

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Problems solved by technology

[0003] The seismic isolation bearing is a rubber product, which is an important part in the seismic isolation building, but on the one hand, its fire resistance is poor. After a fire occurs, it will have a great impact on the normal use of the building. It can also be used normally in the event of a fire to ensure the safety of the building. The fireproof structure of the seismic isolation nodes of the seismic isolation building must be considered emphatically; It can move freely, but under the action of the irregular vibration of the earthquake, the upper structure and the lower structure of the seismic isolation bearing will have a relative displacement, and at this time, the seismic isolation bearing between the upper structure and the lower structure will have a large displacement. In turn, it leads to the damage of the support structure and the failure of the seismic isolation, which cannot effectively protect the building

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