@safetyinside.cn: seismic isolation bearer/seismic isolation bearing Base isolation technology or Building seismic isolation technology involves installing devices such as isolators and dampers between the foundation or substructure and the superstructure of a building, thus forming an isolation layer. Its principle lies in isolating the transmission of seismic energy to the superstructure, reducing the seismic energy input to the superstructure. Meanwhile, it prolongs the natural vibration period of the superstructure and reduces the seismic response of the superstructure, so as to achieve the expected anti-seismic and earthquake-proof goals and provide a more reliable guarantee for the safety of buildings. Among numerous isolators, the rubber bearing is the most common and has a very high cost-performance ratio. It is mainly composed of rubber, steel plates (and lead cores) and is usually placed in a laminated manner. Among them, the laminated steel plates are like the "skeleton" of the isolation bearing, providing sufficient bearing capacity to ensure that the isolation bearing can move freely in the horizontal direction while remaining rigid in the vertical direction. The laminated rubber is just like the "muscles" of the isolation bearing, endowing it with the ability to move flexibly and reset automatically. Even if the isolated building does not fully return to its original position after an earthquake, the rubber will slowly "pull" it back. The rubber wrapped on the outside is like the "skin" of the isolation bearing, possessing functions such as corrosion resistance, anti-aging, flame retardancy and partial heat insulation. And the lead core, as a highly effective energy dissipation mechanism in the isolation system, can be regarded as the "ligament" of the isolation bearing. Lead is chosen because of its good plasticity. Although it may deform with the movement of the isolated building, it will return to its original shape and can be deformed multiple times without losing its effectiveness. When an earthquake occurs and the lead core deforms, the kinetic energy of the earthquake is converted into heat energy. #seismic #seismicdesign #isolator #seismicisolation #rubberbearing #baseisolation #earthquake #earthquakeproofbuilding

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Monday 30 December 2024 01:52:56 GMT