base isolation structure; seismic isolation system
Engineering term for a building design that uses isolators to decouple the structure from ground motion during earthquakes.
This building uses a base isolation structure, so it shakes less during earthquakes.
Base isolation is a technique that places laminated rubber bearings between the building and its foundation.
耐震構造 (earthquake-resistant structure) strengthens the building to resist shaking, while 免震構造 (base isolation) reduces the shaking transmitted to the building.
制震構造 (seismic damping structure) uses dampers to absorb energy, whereas 免震構造 isolates the building from ground motion.
Compound of 免 (めん, 'avoid' or 'escape') + 震 (しん, 'earthquake') + 構造 (こうぞう, 'structure'). A modern technical term.