Hydraulic and earth engineering – Foundation – Columnar structure
Patent
1989-08-16
1990-10-30
Reese, Randolph A.
Hydraulic and earth engineering
Foundation
Columnar structure
405232, 405241, 405248, 175171, E02D 724, E02D 534
Patent
active
049664980
ABSTRACT:
An improved method and apparatus for the formation of casing assisted grout piles at low density overburden construction sites is provided which includes a collar assembly (44) adapted to be secured to the conventional upright support frame (12) forming a part of typical pile-forming equipment. Preferably, the assembly (44) includes a pair of hingedly interconnected arcuate collar sections (46,48) which cooperatively grip the upper protruding end (42) of an embedded metallic casing (40). The sections (46,48) are provided with circumferentially spaced elongated, gripping elements (70) thereon, as well as a piston and cylinder assembly (60) for selective opening and closing movement of the sections (46,48). Use of the casing-gripping assembly (44) prevents substantial movement or uprooting of the embedded casing (40), and permits pile formation at sites such as landfills containing municipal solid wastes.
REFERENCES:
patent: 1570404 (1926-01-01), Rotinoff
patent: 3499293 (1970-03-01), Kato
patent: 3707848 (1973-01-01), Chelminski
patent: 3869003 (1975-03-01), Yamada et al.
patent: 4100750 (1978-07-01), Labrue
patent: 4637758 (1987-01-01), Tamaki et al.
Berkel & Company Contractors, Inc.
Reese Randolph A.
Ricci John
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