DOUBLE ROLLING SUPPORT BODY WITH PLURALITY OF SPHERICAL BODIES, BASE ISOLATION DEVICE COMPRISING EXCESSIVE DISPLACEMENT SUPPRESSING MECHANISM AND BASE ISOLATION STRUCTURE FORMED BY COMBINATION WITH ANOTHER HYDRAULIC SYSTEM OR LAMINATED RUBBER DEVICE

摘要

PROBLEM TO BE SOLVED: To avoid damage of a pan due to stress concentration by using a plurality of spherical bodies proportional to a vertical load, and avoid collision of the spherical bodies. SOLUTION: The plurality of spherical bodies 1 supporting building weight below corner columns, side columns, and a center column with different loads of a building and between upper plates 4 and lower plates 5 of double pans are filled in holes opened radially at even intervals for a number N of the spherical bodies on circumferences for a number proportional to the load so that a supporting load per each spherical body is the same. Intermediate plates 3 arranged with holes are provided so that the plurality of sliding spherical bodies 1 do not approach each other. COPYRIGHT: (C)2004,JPO