Auger piling
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 12, 2000
Grant Date -
N/A
app pub date -
May 28, 1998
filing date -
Jul 31, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is disclosed a method of continuous flight auger piling and a continuous flight auger rig (1), wherein an auger (2) is applied to the ground so as to undergo a first, penetration phase and a second, withdrawal phase, and wherein the rotational speed of and/or the rate of penetration of and/or the torque applied to the auger (2) during the first, penetration phase are determined and controlled as a function of the ground conditions and the auger geometry by means of an electronic computer (8) so as to tend to keep the auger flights loaded (11) with soil originating from the region of the tip of the auger (2). During the withdrawal phase, concrete (14) may be supplied to the tip (12) of the auger (2) by way of flow control and measuring means (6, 7), the rate of withdrawal of the auger (2) being controlled as a function of the flow rate of the concrete (14), or vice versa, by means of an electronic computer (8) so as to ensure that sufficient concrete (14) is supplied to keep at least the tip (12) of the auger (2) immersed in concrete (14) during withdrawal.
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