Base isolated high-rise housing must offer safe and comfortable life not only for an earthquake but also for a storm. In order to raise base isolated effect for an earthquake, base isolated story should be made mobile for small power. On the other hand, once base isolated story moves by a storm, excessive displacement will remain, so a stopper is necessary against a storm. In design of base isolated high-rise building, we need to solve this contradiction. We developed a rational trigger system using a device “Shear-pin with a gap resisting wind load” which ensures base isolated performance and applied it to two projects.
