COMPACTION DUE TO A CYCLIC FORCE ACTING IN THE INSIDE OF A SANDY SUBSOIL

The paper deals with some applications of the compaction theory to the analysis of densification and settlements of a sandy subsoil due to a cyclic force acting inside of it. The fundamentals of the compaction theory are presented first, then a numerical algorithm for dealing with boundary value problems is described. The compaction model has been formulated in terms of the cyclic stress and strain amplitudes. The first equation describing the model is the compaction law and the second one is the stress-strain relationship between cyclic amplitudes. The compaction theory is then appled to predict compaction in a sandy subsoil subjected to cyclic forces acting inside it. It is assumed that the subsoil response due to these cyclic forces is elastic. The methods of analysis proposed is illustrated for both vertical and horizontal cyclic forces, as well as for some complex loading programmes. Some results of small scale experiments are presented and discussed against theoretical predictions. The analysis presented are of some importance to practical geotechnical problems as, for example, the behaviour of a subsoil loaded by anchors or the compaction of sandy subsoil by vibroflotation. One of the advantages of the method proposed is that the analysis of compaction can be performed using small microcomputers like ibm-pcs. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0266352X
• Corporate Authors:

  Elsevier Science Publishers

  Crown House, Linton Road
  Barking, Essex IG11 8JU,   England 
• Authors:
  • Sawicki, A
  • Sliwinski, P
• Publication Date: 1989

Language

• English

Media Info

• Pagination: p. 223-237
• Serial:
  • COMPUTERS AND GEOTECHNICS
  • Volume: 7
  • Issue Number: 3
  • Publisher: Elsevier
  • ISSN: 0266-352X

Subject/Index Terms

• TRT Terms: Compaction; Elasticity (Mechanics); Finite element method; Forecasting; Ground settlement; Mathematical models; Sand; Soils; Subsoil
• ITRD Terms: 5904: Compaction (state of); 5912: Elasticity; 6490: Finite element method; 132: Forecast; 6473: Mathematical model; 4105: Sand; 5792: Settlement; 4156: Soil; 2930: Subsoil
• Subject Areas: Construction; Geotechnology;

Filing Info

• Accession Number: 00499371
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Sep 30 1990 12:00AM