The article describes the vibroplotation method of improving the load bearing capacity of such weak soils as loose sands and soft clay. The method involves mechanical vibration often with saturation of the soil to achieve the required density of compaction in a column penetrating the weak soils. The equipment used in this process, the vibroflat, consists of a vibrator and a follower tube. The vibrator is fitted with a motor-driven eccentric which generates a lateral centrifugal force of some 10 tonnes. The follower tube carries hydraulic power to the motor and also the water supply to the jets. Where sands and gravels are being treated the soil must be sufficiently permeable to allow for dissipation of excess pore-pressure during vibration. The soil should also be non-plastic since cohesion inhibits the vibratory compaction process. /TRRL/

  • Availability:
  • Corporate Authors:

    Morgan-Grampian (Professional Press) Limited

    Morgan-Grampian House, Calderwood Street
    London SE18 6QH,   England 
  • Publication Date: 1977-12


  • English

Media Info

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Filing Info

  • Accession Number: 00183398
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Dec 29 1978 12:00AM