To improve the degrees of freedom of the floor planning of an upper structure section and a lower structure section and the site planning of a vibration isolation device, having a vibration isolation function by installing a mega- structure between the upper structure section and a vibration isolation layer.
In the vibration isolation structure B in which a vibration isolation layer B2 is mounted between a lower structure section B1 and an upper structure section B4, a mega-structure B3 is set up between the upper structure section B4 and the vibration isolation layer B2. Accordingly, the degrees of freedom of the floor planning of the upper structure section B4 and the lower structure section B1 and the site planning of a vibration isolation device can be improved, having a vibration isolation function. When the mega-structure B3 is positioned on the ground first floor section of a structure B body, a large space is ensured easily on the ground first floor section, and the efficiency of utilization can be improved. When the lower structure section B1 is constructed previously and the mega-structurre B3 and the upper structure section B4 are constructed anew, the vibration isolation structure can be made to correspond to extension and rebuilding construction works economically.
TANAKA TOSHIYUKI
KITA YASUYUKI
ENDO KIMISUKE
MURAI NOBUYOSHI
HAYAMIZU HIROSHI
