Method for compaction detection and control when compacting a soil with a deep vibrator

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United States of America Patent

PATENT NO 10385530
APP PUB NO 20190234035A1
SERIAL NO

16256457

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Abstract

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A method for detecting and controlling compaction when compacting a soil by a depth vibrator which has a rotationally drivable imbalance (3) and at least one sensor (6, 12, 13, 14, 19), comprising the steps of:

    inserting the depth vibrator (2) into the soil (17) up to a desired final depth (Tm); compaction of the soil (17) during which the forward angle (φ) of the imbalance (3) as well as the oscillation amplitude (A) of the depth vibrator (2) are determined;detection of a soil stiffness profile from soil stiffness values (k) determined over time (t);determination of a first soil stiffness value (k1) and a second soil stiffness value (k2) from the soil stiffness profile (k), for which it applies that a rate of increase (k′2) of the second soil stiffness value (k2) exceeds a rate of increase (k′1) of the first soil stiffness value (k1) by a defined factor;calculation of a transition soil stiffness value (k12) which is between the first soil stiffness value (k1) and the second soil stiffness value (k2); andstoring the transition soil stiffness value (k12) detected in the respective compaction step to the associated depth (T).

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Patent Owner(s)

Patent OwnerAddress
KELLER HOLDING GMBH63067 OFFENBACH/MAIN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Adam, Christoph Innsbruck, AT 9 14
Adam, Dietmar Mödling, AT 3 4
Freitag, Peter Eggendorf/Siedlung Maria Theresia, AT 1 0
Kopf, Fritz Vienna, AT 11 74
Nagy, Peter Vienna, AT 19 151
Schmitter, Maximilian Kirchberg in Tirol, AT 1 0
Strauch, Gerhard Vienna, AT 3 26

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