Hydraulic and earth engineering – Foundation – Columnar structure
Patent
1994-07-11
1996-11-19
Graysay, Tamara L.
Hydraulic and earth engineering
Foundation
Columnar structure
405232, 405244, 405233, F02D 544
Patent
active
055755933
ABSTRACT:
A method and apparatus used to increase the stiffness characteristic of soil to improve its ability to support a structures and to provide a tie-back anchoring force. The apparatus includes an anchor having helixes thereon is rotated into the ground. The helical anchor is hollow and includes multiple perforated holes along its length and about its perimeter. Once, the anchor is drilled into the ground, pressurized grout is injected therein. The grout is forced through the helical anchor and out through the perforated holes. The grout fills any voids along the sides of the anchor and stiffens the surrounding soil. Once the grout hardens, it may be used in a tie-back application or to support new and old construction or the like. The grout surrounding the anchor increases its lateral support and prevents deflection thereof.
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Atlas Systems Inc.
Graysay Tamara L.
Lagman Frederick L.
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