Base-isolated structure with a rigid system of the negative stiffness and equipment of negative

摘要

Exerts a function of both the friction damping and stiffness of the negative [challenges] with a simple configuration, trigger function also provide rigidity device or the like capable of imparting negative. A top member 2 having an [SOLUTION] concavely curved grooves 2a, and the lower member 3 has a surface 3a convex curved shape on a smaller curvature than the concavely curved grooves of the upper member, formed in a semi-cylindrical, the upper member surface 4a convex curved shape on the same curvature and concavely curved grooves of, and consists of a sliding member 4 which has a concavely curved lower surface 4b of the same curvature and surface convex curved shape on the lower member, projections of the sliding member while the concavely curved bottom surface of the sliding member is in contact with the convex curved surface of the lower substrate surface and contacts the concavely curved grooves of the upper member curved on the sliding member and the upper member The slides on the upper surface of the lower member while rotating between the rigidity of the device 1 negative to obtain a frictional damping and stiffness of the negative. The structure 31, formed a rigid device 1 of the negative, the laminated rubber 32 having a restoring force characteristics, possible to adjust the seismic isolation effect, homing can be constructed easy seismic isolation structure 30 after the earthquake or the like. [Selection Figure Figure 3