EARTHQUAKEPROOF FOUNDATION Russian patent published in 1994 - IPC

FIELD: construction. SUBSTANCE: foundation has lower and upper supporting belts, located by some distance from each other. Upper belt transfers operational loading to lower belt through supports, that act as switching off links. projections are formed between supports in upper belt and matching pits - in lower belt. Projections enter pits with formation of side and horizontal clearances. Vertical flexible rods, ends of which are fixed to belts, are set in side clearances. Height of horizontal clearances does not exceed value of vertical projection of calculated deformation of rods and does not exceed distance between belts. Width of side clearances by horizontal line is less than half of amplitude of relative relocations of supporting belts under calculated seismic action. EFFECT: foundation is used in construction. 7 cl, 1 dwg