TECHNIQUES OF BACKFIGURING CONSOLIDATION PARAMETERS FROM FIELD DATA

Methods of analyzing field consolidation data from areas with and without vertical drains are presented. All methods analyze field data independently of laboratory data. Settlement data from areas having vertical drains can be analyzed by three different techniques to yield values of the apparent coefficient of consolidation and the ultimate settlement for foundation clay. Analysis of piezometer data yields values of apparent coefficient of consolidation by a separate technique. Data from areas without drains can be analyzed for similar parameters. All methods involve the use of Terzaghi's theory of consolidation or Barron's equal strain theory for areas with vertical drains. These theories are appropriate for analysis of most clay deposits. The techniques are illustrated and results from their use on the consolidation of varved clay beneath the approach fills of the Putnam Bridge are presented. These techniques were used in analyzing the data from 49 settlement platforms and two piezometer groups of this project. The results show interesting phenomena that should be explored further with data from other sites.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: p. 71-79
  • Monograph Title: Modern geotechnical methods: instrumentation and vibratory hammers
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00603609
  • Record Type: Publication
  • ISBN: 030905057X
  • Files: TRIS, TRB, ATRI
  • Created Date: Feb 28 1991 12:00AM