Structure and method of constructing and test-loading pile ancho

Details Structure and method of constructing and test-loading pile ancho Structure and method of constructing and test-loading pile ancho

1976-07-21

1977-08-23

Shapiro, Jacob

61 39, 61 565, 52166, 521691, E02D 574

Patent

active

040431339

ABSTRACT:
A method of constructing pre-tested concrete pilings and pile caps particularly for use in supporting structures, such as transmission line towers that are subjected to large overturning moments. One or more pile holes are bored, a small diameter sheathing containing one or more steel tendons is inserted and a concrete mixture is poured in the pile hole exterior of the tendon sheathing with the tendons anchored in the bottom of the pile. When the concrete has obtained sufficient strength, the tendon is stressed, thereby testing the tension-carrying capacity of the pile and its surrounding foundation soil. A concrete pile cap is thereafter joined to the pile, the tendons are again stressed and anchored to the pile cap and the tendon sheathing is filled with concrete grout to form a solid post-tensioned foundation that has been pre-tested at a force in excess of its design load.

REFERENCES:
patent: 2763464 (1956-09-01), Leonhardt
patent: 3087308 (1963-04-01), Hart et al.
patent: 3256694 (1966-06-01), Siedenhans
patent: 3299644 (1967-01-01), White

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