BEARING CAPACITY OF DRIVEN FRICTION PILES IN LOOSE SAND

IN SWEDEN DYNAMIC DRIVING FORMULAE ARE FREQUENTLY USED FOR THE EVALUATION OF THE BEARING CAPACITY OF FRICTION PILES IN SAND. HOWEVER, THERE IS NOT A SATISFACTORY AGREEMENT BETWEEN CALCULATED BEARING CAPACITIES AND BEARING CAPACITIES OBTAINED IN THE TEST LOADS. FOR THIS REASON THE SWEDISH COMMISSION FOR PILES IS CARRYING OUT EXPERIMENTS USING INSTRUMENTED STEEL PIPE PILES. IN ADDITION, METHODS FOR CALCULATING BEARING CAPACITY WITH THE AID OF PROBES HAVE BEEN INVESTIGATED. IN THOSE EXPERIMENTS CARRIED OUT, BEARING CAPACITY ON THE PILE TIP WAS FOUND TO BE APPROXIMATELY HALF THAT OF THE POINT RESISTANCE FOR STATIC PROBES IN LOOSE SAND. THE SURFACE FRICTION OF A ROUGH-SURFACE PILE WAS FOUND TO BE TWICE THAT OF A SMOOTH STEEL PIPE. THE SURFACE FRICTION OF TENSION STRESSED PILES WAS HOWEVER ONLY HALF THAT OF COMPRESSED PILES. THE COVERING ABSTRACT FOR THE CONFERENCE IS IRRD NO 306088.

  • Authors:
    • BERGDAHL, U
    • WENNERSTRAND, J
  • Publication Date: 1976-3

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01301888
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD
  • Created Date: Nov 21 2010 8:25AM