Hydraulic and earth engineering – Foundation – Underpinning
Patent
1991-06-11
1992-05-26
Taylor, Dennis L.
Hydraulic and earth engineering
Foundation
Underpinning
254 29R, 405229, E20D 1702, E20D 522
Patent
active
051163551
ABSTRACT:
A pier driving assembly is disclosed which supports the foundation under compression forces. The pier driving assembly includes a driving pier bracket which drives the pier pipes into the ground, a pier head which is placed on the pier pipe after the pipe has been driven to bedrock and the pier driving bracket assembly has been removed, and a loading bracket which gives the final lift to the foundation to make it level. When complete, all that is left in the ground is the pier and the pier head. The pier driving bracket and loading bracket are removed when their use is completed. This assembly allows for easy access to the pier should the building settle again. A modified pier driving assembly includes a pier driving unit, incorporating a pair of hydraulic jacking cylinders, for stabilization of the unit into position when located within the foundation excavation, the unit having a pair of hydraulic driving cylinders, cooperating with a guide block, for driving pier pipe segments into the ground; the unit being removed, and replaced by a pier head, incorporating a pair of lateral brackets, for supporting a pair of hydraulic jacking cylinders, for stabilizing or raising of the foundation wall and footing, when energized, and providing for the locating of a bolt means therein, which when tightened against a bearing plate arranged at the underside of the footing, supports the building foundation and footing thereon, allowing for the removal of the temporarily emplaced hydraulic jacking cylinders. When accomplished, the excavation can be refilled, concealing the supporting bolt means, pipe segments, bearing plate, all underground, and stabilizing the building wall and integral footing.
REFERENCES:
patent: 2742258 (1956-04-01), Rosasco
patent: 3709464 (1973-01-01), Johnson et al.
patent: 3807695 (1974-04-01), Gremillion et al.
patent: 4070867 (1978-01-01), Cassidy
patent: 4147457 (1979-04-01), Washida
patent: 4432664 (1984-02-01), Baldyga
patent: 4921217 (1990-05-01), Kies et al.
Denk Paul M.
Taylor Dennis L.
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