DYNAMIC CONSOLIDATION. NEW FOUNDATIONS FOR OLD

This article describes the principle of dynamic consolidation for the construction of new foundations on the site of existing or recently demolished structures. Dynamic consolidation (menard technique) is carried out by repeated surface tamping with appropriate tampers up to 20 tonnes weight dropping from approximately 20 M height by a heavy duty crane. Energy per blow and the tamping weight are chosen to maximise penetration of the resulting stress impulses, and several passes of tamping are required. Substantial compaction of the fill results, thus reducing total and differential settlements occurring after erection and permitting use of conventional spread footings. The transmitted vibration frequency is between 5 and 10 hz. The spacing of the initial impact positions is particularly critical to achieve compaction at the bottom of the fill. Methods of controlling dynamic consolidation involve the use of pressuremeters, or static and dynamic penetrometers. /TRRL/

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  • Corporate Authors:

    Morgan-Grampian (Professional Press) Limited

    Morgan-Grampian House, Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Pearce, G W
  • Publication Date: 1975-12

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Filing Info

  • Accession Number: 00184305
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Dec 29 1978 12:00AM