| 摘要 |
Method and device for compacting the soil by means of vibration transmitted to the soil particles through a tube open or closed at its lower end and having at its upper end a vibration source with an adjustable counter-weight, said source being capable of generating vibrations in the longitudinal sense of the tube; around the lower portion of the tube a number of radial plates are rigidly connected, the dimensions of said plates being determined such in relationship with the vibration source, that the frequency of said source is tuned to the own vibration frequency (also called resonancy) of the surrounding soil or of said radial plates in the lower portion of said tube or to a multiple of it; the tube is lowered into the ground only by gravitational force during the operation of the vibration source.
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