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US 3,939,664 AGranted
Large diameter tubular piles and the bedding thereof
AssigneeSolmarine S.A.
InventorsGeorges Mazier, Jean Paul Geffriaud, Daniel Gouvenot
Life of this patent
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AssigneeSolmarine S.A.
InventorsGeorges Mazier, Jean Paul Geffriaud, Daniel Gouvenot
Estimating the term…
A large diameter tubular pile for bedding into a borehole has an auxiliary tube extending inside it and a series of axially spaced apart holes through its wall which communicate with the interior of the auxiliary tube through discharge pipes which are arranged to allow flow only from the auxiliary tube to outside the pile. The pile is bedded in a borehole by first inserting the pile and then introducing into the auxiliary tube an injection pipe having a pair of axially spaced apart plugs which seal against the inner wall of the auxiliary tube. The injection pipe is located so that the plugs seal on opposite sides of an opening into a discharge pipe, and grout under pressure is forced from the injection pipe through the discharge pipe into the borehole around the pile. This procedure may be repeated for the other discharge pipes.
A method of bedding a main tube of relatively large diameter in a borehole, comprising adding to the main tube to be bedded an auxiliary injection-tube of smaller diameter arranged in this main tube and which communicates with openings from the latter by means of sidepipes furnished with non-return valve means enabling the flow of an injection grout only from the auxiliary tube towards the main tube, and injecting grout into the borehole through said pipes and said openings by introducing into the auxiliary tube and injection-pipe having plugs which are arranged on opposite sides of a side pipe through which the grout is to flow.
A tubular pipe device adapted to be bedded in a borehole comprising in combination:
Dependencies are inferred from the claim text.