BASE-ISOLATED FLOOR STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a base-isolated floor structure which is simple to enable a material cost and a manufacturing cost to be reduced and can perform base isolation movement for a foundation floor surface having an uneven portion with equal effectiveness for the same having no uneven portion.SOLUTION: A base-isolated floor structure 40 comprises: a base-isolation frame 42 with a plurality of frames 46; and a plurality of base-isolation support sections 44 which support the base-isolation frame 42. The base-isolation support section 44 has: a ball bearing 60 placed on a foundation floor surface 41; a plate member 54 arranged above the ball bearings 60; and a rod member 64 with an outer peripheral face thereof fixed to a lower face 54b of the plate member 54. The ball bearing 60 is installed in a manner that allows the same to be inclined with respect to the plate member 54 through the rod member 64.