| 摘要 |
PROBLEM TO BE SOLVED: To reliably generate damping force in accordance with a vibration level.SOLUTION: A seismic isolation device placed between a superstructure and a substructure comprises: a seismic isolation support section for seismic isolation support of the superstructure; and a damping section arranged in parallel to the seismic isolation support section. The damping section has: a slide plate which is installed on one of either the superstructure or the substructure; a skid which slides on a slide surface of the sliding plate while being pressed against the same; and a pressure application section which is installed on the other of either the superstructure or the substructure and applies pressing force to the skid against the sliding surface. A friction coefficient at a peripheral section of the slide surface is larger than the same at a central section thereof.SELECTED DRAWING: Figure 1 |
