CHANGES IN TOTAL STRESSES AND PORE WATER PRESSURES DURING PILING

Installation of piles in soft clay induces excess pore water pressures. To investigate the significance of such an excess for slope stability, field measurements of the change in total and effective stresses were carried out during a piling operation with relatively dense piling. Measurements along the soil profile initially yielded an increase in the horizontal total stress, but when the pile driving came out of range, the horizontal total stresses decreased quite rapidly. Since the excess pore pressure decreased more slowly, the effective stresses decreased successively. This behavior was also confirmed by modified triaxial tests. In a stability analysis it is not recommendable to utilize the increase in horizontal total stress without a detailed study.

Language

  • English

Media Info

  • Features: Figures; References;
  • Pagination: p. 553-558

Subject/Index Terms

Filing Info

  • Accession Number: 00779924
  • Record Type: Publication
  • ISBN: 9058090477
  • Report/Paper Numbers: Volume 1
  • Files: TRIS
  • Created Date: Dec 4 1999 12:00AM