GB1315609A - Anchorable piles - Google Patents

Abstract

1315609 Piles T L ADAMS and F C STEPANICH 17 Sept 1971 43450/71 Heading E1H A hollow steel or concrete pile 10 includes a number of anchoring plates e.g. 25, 28 which once the pile has been driven, are extended through corresponding staggered apertures e.g. 25a, 28a in the pile wall by removable and reusable means inserted through the hollow pile bore. In one form, Fig. 1, the plates are extended by a removable screw threaded shaft 16 which forces out the plates from within the pile as it is screwed down through the pile interior. Alternatively (Fig. 9 not shown) a hydraulic jack may be lowered through the pile to successively extend each plate through its corresponding aperture. The anchoring plates may be provided in any part of the pile including its shoe portion 12. The pile which can be of circular, square or polygonal section may be internally reinforced by an inner tubular bracing section (Fig. 11 not shown) at the region containing the extensible anchoring plates.