PILE FOUNDATION FOR SEISMIC TERRITORIES Russian patent published in 2007 - IPC E02D27/14 

FIELD: construction, particularly pile foundations to be erected in seismic territories characterized by earthquake intensities of 9 or 10 points.

SUBSTANCE: pile foundation has intermediate pad arranged so that upper pad surface is flush with designed ground surface mark. During foundation erection two or three pile rows are arranged directly under grillage. One or two pile rows used for foundation base reinforcement outside foundation contour extend in both directions from foundation center. Sliding member having low friction coefficient is arranged at grillage base. The sliding member is covered with concrete mattress. Reinforcement bars of monolithic grillage used for independent column foundation erection may be formed as reinforcing cage. The reinforcing cage includes transversal reinforcement bars and free length of maim reinforcement bars.

EFFECT: decreased horizontal seismic impact to building superstructure.

2 cl, 3 dwg