Hydraulic and earth engineering – Foundation – Columnar structure
Patent
1996-03-04
1998-09-29
Graysay, Tamara L.
Hydraulic and earth engineering
Foundation
Columnar structure
405244, 405250, 405251, E02D 564, E02D 700, E02D 1100
Patent
active
058138005
ABSTRACT:
Damaged sections of existing piles are replaced with a replacement pile section that includes various segments, including a jack section for sizing and preloading the replacement pile section to original design loads and strengths. The replacement pile section includes at least one coupler having a jack section, which includes a jack for applying a design load to the pile and a plurality of jack screws that are adjusted to accept the design pile load; the hydraulic jack is removed through an access opening, so that the jack screws carry the load; the cavity in the jack section is filled with grout, such as concrete through the access opening, which is then sealed. Other sections of the replacement pile section include, for example, intermediate pile sections, shock absorbing sections, and additional couplers. An alternative embodiment employs two or more balanced hydraulic jacks bearing against external jack flanges fastened to the pile above and below the replaced section.
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Graysay Tamara L.
Iles Kenneth W.
Mayo Tara L.
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