Seismic isolation products for buildings mainly include the following categories:
Rubber seismic isolation bearings:
Natural rubber seismic isolation bearings (LNR): It is composed of multiple layers of rubber sandwiched with steel plates. It has the characteristics of low horizontal stiffness and high vertical stiffness. It is suitable for general structures and important structures.
Lead rubber seismic isolation bearings (LRB): On the basis of natural rubber bearings, lead cores are embedded. It has large damping and horizontal displacement capabilities and is suitable for building structures that require high seismic performance.
High damping rubber seismic isolation bearings (HDR): Carbon or other elements are added to rubber to improve damping performance. It is suitable for important projects such as high-rise buildings and large-span bridges.
Sliding seismic isolation bearings:
Elastic sliding plate bearings (ESB): Using the low friction characteristics of the sliding plate, the structure is allowed to produce large displacements during earthquakes. It is suitable for building structures with high displacement requirements such as bridges and large industrial plants.
Friction Pendulum Support (FPS): It consumes seismic energy through the swing and friction of the support, has good seismic isolation and energy dissipation performance, and is suitable for large-span buildings and important buildings with high requirements for seismic safety.
Damper:
Viscous damper (VFD): It consumes energy by using the damping force generated by the viscous medium when the piston moves, and is suitable for seismic reinforcement and shock absorption control of various buildings.
Buckling restrained energy dissipation brace (BRB): It is composed of core plate, outer sleeve and filling material, has strong energy dissipation capacity, and is suitable for seismic reinforcement and new construction design of large-span heavy-load structures and high-rise buildings.
Metal damper: It includes buckling restrained brace (BRB), metal damping wall and metal connecting beam type damper, which are suitable for steel structure buildings.
These seismic isolation products are suitable for different types of building structures through different working principles and material properties, aiming to reduce the impact of earthquakes on buildings and improve the seismic resistance of buildings.