The structure of seismic isolation products for buildings mainly includes the following types:
Rubber bearing seismic isolation: This is the most mature and widely used seismic isolation technology in the world. The specific application method is to regularly arrange the laminated rubber bearings between the foundation and the superstructure to form a layer of plastic connection device, which not only increases the vibration period of the building, but also reduces the horizontal stiffness and horizontal acceleration of the structure, thereby consuming seismic energy and reducing damage to the superstructure.
Sliding seismic isolation: By setting a sliding layer between the foundation and the ground of the building, such as lead rubber bearings or sliding bearings, the building can slide horizontally during an earthquake, thereby isolating seismic energy. This seismic isolation method is suitable for various building structures, including high-rise buildings, bridges, etc.
Friction pendulum seismic isolation: The friction pendulum system is used to consume seismic energy. The system consists of a pendulum and a fixed point, and the seismic energy is consumed by the swing of the pendulum. The friction pendulum seismic isolation system has a good seismic isolation effect and is suitable for large buildings and important facilities.
Suspension isolation: The building is suspended by a suspension system to isolate it from the ground. This type of isolation is suitable for important buildings or precision instruments and equipment that require special protection.