Hydraulic and earth engineering – Foundation – Columnar structure
Patent
1981-12-23
1984-01-17
Taylor, Dennis L.
Hydraulic and earth engineering
Foundation
Columnar structure
405240, 405247, 405248, 405269, E02D 544
Patent
active
044261756
ABSTRACT:
A precast concrete pile is provided which has spaced apart concavities disposed in its inner or outer peripheral wall surface. The spaced apart concavities partially extend into the wall surface and terminate with frangible end portions. These end portions break under pressure of mortar pumped into the pile body, thereby forming apertures through which the mortar flows from the pile into the ground adjacent the pile. The precast concrete pile, after being driven into the ground, has a hydraulic sealing apparatus suspended at a desired level within the pile. The hydraulic sealing apparatus is filled with oil to cause radial swelling of the rubber packing to seal off a hollow space within the pile under the packing, and mortar is pumped under pressure into the sealed space until the concavities burst open to enable internal mortar to penetrate the ground surrounding the pile. The subsequently hardened masses of mortar serve as a set of claws protruding outwardly from within the pile body to prevent settlement thereof.
REFERENCES:
patent: 2591807 (1947-08-01), Greene
patent: 3010514 (1961-11-01), Fox
patent: 3184924 (1961-11-01), Staunau
patent: 3578083 (1971-05-01), Anderson et al.
patent: 4045966 (1977-09-01), Rusche
patent: 4299255 (1981-11-01), Miller
Gungor John A.
Taylor Dennis L.
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