THK Seismic Isolation Systems (pic)
Viscous damping system RDT
This system absorbs earthquake force transmitted to the building with the resistance offered by a viscous substance. The viscous damping system RDT has a structure in which linear motion is converted via a ball screw nut into rotary motion. A shearing force is applied to the viscous substance between the inner tube, which connects to the nut, and a fixed outer tube.
Recovery system
When an earthquake occurs, houses with isolated bases can freely move away from their foundations in any horizontal direction. Therefore, they need to return to their original positions when the earthquake ends. For that purpose they are equipped with this recovery system, which incorporates laminated rubber and other materials.
Preventing transmission of earthquake force
THK Isolation Table, model TSD
In an actual earthquake, even if the building is not damaged, people inside can be injured in secondary accidents. Valuable indoor property can fall over and be destroyed. To prevent such destruction, it is vital to consider how to prevent the indoor space from "quaking." THK has utilized its knowledge of residential isolation technology to create indoor isolation measures.
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