Model for Large Strain Consolidation by Centrifuge

A numerical model, called CC1, is presented for one-dimensional large strain consolidation in a geotechnical centrifuge. The model includes all the capabilities of a previous large strain consolidation code, CS2, written for surcharge loading under normal gravity conditions. In addition, CC1 accounts for variation of acceleration factor N over the depth of a centrifuge test specimen. The development of CC1 is first presented, followed by a comparison of simulated time-settlement curves with experimental measurements for Singapore marine clay and a parametric study illustrating the effects of nonuniform N distribution on centrifuge consolidation behavior. Simulations indicate that the effect of spatially varying N is most strongly controlled by the ratio of specimen height to centrifuge arm length and that the error associated with the assumption of constant N is relatively small if this ratio is 0.2 or less. Finally, CC1 is used to calculate the optimal location within a centrifuge specimen of Singapore marine clay at which to match the desired N value and the error that results if N is matched at the initial midheight of the specimen.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/15323641
• Authors:
  • Fox, Patrick J
  • Lee, Jangguen
  • Qiu, Tong
• Publication Date: 2005-12

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 267-275
• Serial:
  • International Journal of Geomechanics
  • Volume: 5
  • Issue Number: 4
  • Publisher: American Society of Civil Engineers
  • ISSN: 1532-3641
  • EISSN: 1943-5622
  • Serial URL: http://ascelibrary.org/journal/ijgnai

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Centrifuges; Consolidation; Error analysis; Geotechnical engineering; Marine clays; Mathematical models; Parametric analysis; Simulation; Strain (Mechanics)
• Geographic Terms: Singapore
• Subject Areas: Data and Information Technology; Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 01014896
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 29 2005 4:43PM