Deep water piling and method of installing or removing

Details Deep water piling and method of installing or removing Deep water piling and method of installing or removing

1995-11-29

1998-01-06

Graysay, Tamara L.

Hydraulic and earth engineering

Marine structure or fabrication thereof

With anchoring of structure to marine floor

405224, 405232, 114296, E02D 720

Patent

active

057047324

ABSTRACT:
A deep water pile and installation and removal method that eliminates the need for underwater hammers or pile drivers. The pile is a hollow tube that is open at the lower end and provided with a fitting at the upper end for attachment to a lowering pipe. The fitting at the upper end also for fluid communication between the lowering pipe and the pile. Injecting air into the lowering pipe draws water from the lowering pipe and pile. This creates a hydrostatic pressure differential whereby the greater pressure on the outside of the pile head forces the pile into the sea floor. Removal of the pile may be accomplished by injecting high pressure water into the pile through the pile head. The high pressure water injection aids in overcoming the hydrostatic pressure on the outside of the pile head.

REFERENCES:
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patent: 3817040 (1974-06-01), Stevens
patent: 4045969 (1977-09-01), Jansz
patent: 4257721 (1981-03-01), Haynes
patent: 4318641 (1982-03-01), Hogervorst
patent: 4432671 (1984-02-01), Westra et al.
patent: 4572304 (1986-02-01), Mahar et al.
patent: 4575282 (1986-03-01), Pardue, Sr. et al.
patent: 4619218 (1986-10-01), Kenny

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