Method of making cast-in-place prestressing concrete pile by mea

Details Method of making cast-in-place prestressing concrete pile by mea Method of making cast-in-place prestressing concrete pile by mea

1985-08-19

1990-04-10

Corbin, David H.

Hydraulic and earth engineering

Foundation

Columnar structure

405239, 405257, E02D 538

Patent

active

049155440

ABSTRACT:
A method of making a cast-in-place prestressed pile by means of a movable casing set composed of some separable casings which can be displaced vertically, and pull and push each other after displacing. Reinforcing cage and prestressing strands can be placed within the casing set. After grouting, each section, the casings can be pulled out one by one with an external force to overcome friction between the earth and casings till complete removal of all casing, a cast-in-place pile is then formed, and the movable casing set can be used at another spot.

REFERENCES:
patent: 1607613 (1926-11-01), Upson
patent: 1912089 (1933-05-01), Moe
patent: 1969229 (1934-08-01), Marsden
patent: 2797466 (1957-07-01), Lidberg
patent: 4043133 (1977-08-01), Yegge

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