CONSOLIDATION OF A SOIL UNDER VARIABLE LOAD WITH VERTICAL DRAINS

CONSOLIDATION D'UN SOL AVEC DRAINS VERTICAUX SOUS CHARGE VARIABLE

A large part of the consolidation of compressible soil, in which vertical drains have been installed, takes place during the construction of an embankment, if the construction is spread over a certain length of time. To prevent failure and determine the loads at the planning stage or during construction, it is necessary to take into account the excess pore water pressure and the degree of consolidation at all times. The methods outlined in this report: analytical and numerical solutions (finite difference method) enable the evolution of these parameters to be calculated as a function of time. The analytical method facilitated the derivation of relations describing the excess pore water pressure at any point and of charts for calculating the degree of consolidation in the case of an embankment being built in stages. The finite difference method led to the establishment of a program taking into account any type of loading. This program enables the excess pore water pressure to be calculated at any point of the compressible layer and the degree of consolidation to be determined at any time. Numerical applications show that those two methods when compared (case of simple loading) give very similar results. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00852643
• Corporate Authors:

  Central Laboratory of Bridges & Highways, France

  75732 Paris,   France 
• Authors:
  • CHAPUT, D
  • Thomann, G
• Publication Date: 1975-9

Language

• French

Media Info

• Features: Figures; References; Tables;
• Pagination: 66 p.
• Serial:
  • Publication of: Central Laboratory of Bridges & Highways, France
  • Publisher: Central Laboratory of Bridges & Highways, France
  • ISSN: 0085-2643

Subject/Index Terms

• TRT Terms: Analysis; Calculation; Charts; Compressibility; Computer programs; Consolidation; Consolidations; Construction; Construction management; Embankments; Finite differences; Loads; Mathematical analysis; Measurement; Numerical analysis; Pore water pressures; Sand drains; Soils; Time; Vertical drains
• Uncontrolled Terms: Loading; Modifications; Soil consolidation; Stage construction
• Old TRIS Terms: Analytical method
• ITRD Terms: 6471: Analysis (math); 6464: Calculation; 6486: Chart; 5905: Compressibility; 5791: Consolidation (soil); 2801: Embankment; 6460: Finite difference method; 5567: Load; 9048: Modification; 5762: Pore water pressure; 2929: Sand drain; 8645: Software; 4156: Soil; 3657: Stage construction; 5414: Time
• Subject Areas: Construction; Geotechnology; Highways;

Filing Info

• Accession Number: 00163136
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Report No. 47 Monograph
• Files: ITRD, TRIS
• Created Date: Mar 14 1978 12:00AM