Seismic isolation products for buildings mainly include the following categories:
Seismic isolation bearings:
Natural rubber bearings (LNR): Made of multiple layers of rubber and multiple layers of steel plates alternately stacked and vulcanized, they have the characteristics of strong vertical bearing capacity and low horizontal stiffness, and are suitable for all types of buildings, such as residential buildings, office buildings, etc.
Lead rubber bearings (LRB): On the basis of natural rubber bearings, lead cores are inserted in the middle, which have both the flexibility of rubber bearings and the energy dissipation capacity of lead cores. They are suitable for important buildings and buildings in earthquake-prone areas, such as hospitals and schools.
High damping rubber bearings (HDR): Through special formulas and processes, rubber has higher damping performance, which is suitable for medium and high-rise buildings, large-span buildings, etc.
Elastic skateboard bearings (ESB): Using the low friction characteristics of skateboard materials, the structure is allowed to have a large displacement, which is suitable for bridges, large industrial plants, etc.
Friction Pendulum Support (FPS): It consumes seismic energy through the swing and friction of the support, and is suitable for large-span buildings and important buildings, such as airport terminals, stations, exhibition halls, etc. Energy Dissipation Damper Type: Viscous Damper (VFD): It consumes energy by using the damping force generated by the viscous medium during piston movement, and is suitable for seismic reinforcement and shock absorption control of various building structures, such as high-rise buildings and bridges, etc. Buckling Restrained Energy Dissipation Brace (BRB): It consists of a core plate, an outer sleeve and filling materials. It has the characteristics of strong energy dissipation capacity and excellent hysteresis performance. It is suitable for large-span heavy-load structures, high-rise buildings, etc. Viscous Damping Wall (VFW): Viscous materials are filled in the wall to consume seismic energy through the shear deformation of the wall. It is suitable for residential buildings, office buildings, etc. Viscoelastic Damper (VED): It consumes seismic energy by using the energy dissipation characteristics of viscoelastic materials, and is suitable for shock absorption control of various building structures . Friction damper (FD): dissipates energy through relative sliding between friction elements.
These seismic isolation products each have their own characteristics and scope of application, and selection requires comprehensive consideration based on specific building requirements and engineering conditions.