SETTLEMENT CHARACTERISTICS OF PRECONSOLIDATED NATURAL SAND. IN SITU SCREW-PLATE, PRESSUREMETER AND PENETRATION TESTS

SAETTNINGSPARAMETRAR FOER FOERBELASTAD NATURLIGT LAGRAD SAND. SKRAVPLATTE-, PRESSIOMETER- OCH SONDERINGSFOERSOEK

The effects of overconsolidation have mainly been investigated for cohesive soils because undisturbed samples can be fairly easily obtained for laboratory investigations in comparison with gravel, sand or silt. It is also possible to install in cohesive soils different measuring devices in the field and to determine in-situ, for example, the lateral earth pressure at rest. In this report the settlements of footings on slightly overconsolidated sands loaded beyond the preconsolidation pressure have been investigated. Settlement calculations require a knowledge of the preconsolidation pressure, and of the modulus of deformation below and above the preconsolidation pressure. Different methods of determining these parameters in-situ have been examined. The investigation was carried out at a test site (16x18m) the thickness of the sand deposit investigated was 8 M. Its thickness had been reduced about 16 M by excavation. The remaining 8 M of sand rested directly on rock. The ground water level was located below the surface of the bed-rock. The sand was overconsolidated due to the excavation. /TRRL/

  • Corporate Authors:

    National Swedish Institute for Building Research

    Box 27 163, 102 52
    Stockholm,   Sweden 
  • Authors:
    • Dahlberg, R
  • Publication Date: 1975

Language

  • Swedish

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: 316 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00096766
  • Record Type: Publication
  • Source Agency: Swedish National Road and Traffic Research Institute
  • Report/Paper Numbers: D1: 1975
  • Files: ITRD, TRIS
  • Created Date: Jul 15 1975 12:00AM