| 摘要 |
PROBLEM TO BE SOLVED: To provide a building with stairs in base isolation structure in which seismic force on an earthquake can be decreased for damping vibrations quickly and thereby an escape passage can be secured sufficiently for each of stories. SOLUTION: Stairs 13 for a specified number of stories are provided at the inside of a frame, and a stairs frame 10 installed along the exterior of a building 2 and bearing devices 8 interposed between the stairs frame and foundation parts 6 for supporting the stairs frame so that the frame can be displaced horizontally against the foundation parts are provided. Then, dampers 12, each arranged horizontally between opposite laterals of the building and the stairs frame and produces damping force as horizontal distance between the laterals of the building and the stairs frame varies, are provided. |
