DYNAMIC CONSOLIDATION AT SURREY DOCKS

Dynamic consolidation is a method of deep ground compaction effective to depths of several meters, in which the ground is subjected to massive impacts that generate high energy shock waves. This is done by dropping a large tamping block of steel and concrete from a predetermined height using an adapted crawler crane. The shock waves and high stresses induced in the soil result in a series of simultaneous effects: a compression of the voids and a partial liquefaction of the soil is accompanied by the creation of preferential drainage paths through which pore water can be dissipated, resulting in consolidation. The compaction energy, i.e. the product of the fall height of the tamping mass and the number of blows imparted per sq m, is dependent on the type of ground and the loadings to which it will be subsequently subjected. The base area and weight of the block are calculated for each application, the depth of effective consolidation being related to the square root of the black's weight and the height from which it is to be dropped. This article describes the first application of this method in the London area which is now being carried out at the now discussed Surrey Docks, Rotherhithe.

  • Availability:
  • Corporate Authors:

    Foundation Publications Limited

    7 Ongar Road
    Brentwood CM15 9AU, Essex,   England 
  • Publication Date: 1979-1

Media Info

  • Features: Figures;
  • Pagination: p. 32-34
  • Serial:
    • GROUND ENGINEERING
    • Volume: 12
    • Issue Number: 1
    • Publisher: EMAP CONSTRUCT LIMITED
    • ISSN: 0017-4653

Subject/Index Terms

Filing Info

  • Accession Number: 00194160
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 11 1979 12:00AM