EMBANKMENT BUILT UP TO FAILURE POINT - EXPERIMENTAL SITE AT CUBZAC-LES-PONTS

REMBLAI CONSTRUIT JUSQU'A LA RUPTURE - SITE EXPERIMENTAL DE CUBZAC-LES-PONTS.

THE AUTHORS DESCRIBE AN EXPERIMENT WITH AN EMBANKMENT OF SOFT SOIL WHICH WAS BUILT UP TO FAILURE POINT. THIS EXPERIMENT IS PART OF A LARGER PROGRAMME COMPRISING THE CONSTRUCTION OF THREE EMBANKMENTS WHICH WILL PERMIT THE STUDY NOT ONLY OF FAILURE BUT ALSO OF ONE-DIMENSIONAL AND TWO-DIMENSIONAL CONSOLIDATION, IMMEDIATE SETTLEMENT, ROLE OF THE OVER CONSOLIDATED LAYER, CREEP PHENOMENA. THE FOLLOWING POINTS ARE TREATED IN TURN: MECHANICAL AND GEOTECHNICAL CHARACTERISTICS OF SOILS, PREPARATION OF ULTIMATE TESTS (IN-SITU TESTS, LABORATORY TESTS, INITIAL CALCULATIONS, INSTRUMENTATION), COURSE OF THE EXPERIMENT. THE FIRST RESULT OF THIS EXPERIMENT IS TO DEMONSTRATE THAT TRADITIONAL METHODS OF STABILITY CALCULATIONS ARE NOT SATISFACTORY FOR CERTAIN SOILS. THE FOLLOWING HYPOTHESES ARE ADVANCED: (1) IT SHOULD NOT BE NECESSARY TO TAKE ACCOUNT OF THE OVER CONSOLIDATION AT THE SURFACE; (2) THE ANISOTROPY OF THE SOIL FROM THE POINT OF VIEW OF COHESION, CANNOT EXPLAIN THE DIFFERENCES BETWEEN THE THEORETICAL AND EXPERIMENTAL VALUES. THE SECOND CONCLUSION IS THAT IN THE CASE OF A RAPID CONSTRUCTION OF AN EMBANKMENT, THERE IS NO ROUGH MEASUREMENT WHICH WOULD GIVE AN INDICATION OF A LOW SAFETY FACTOR AT A SUFFICIENTLY EARLY TIME BEFORE FAILURE. ONE OF THE OBJECTIVES OF EVALUATION AND INTERPRETATION OF TESTS WILL, THEREFORE, BE THE DEMONSTRATION OF THE CHOICE OF MEASUREMENTS TO BE MADE, THE MANNER IN WHICH THEY ARE TO BE INTERPRETED, AND THE CHOICE OF THE LOCATION OF THE MEASURING APPARATUS.

  • Availability:
  • Authors:
    • MIEUSSENS, C
    • QUEYROI, D
    • VOGIEN, M
  • Publication Date: 1974-11

Language

  • French

Media Info

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Filing Info

  • Accession Number: 01296707
  • Record Type: Publication
  • Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)
  • Files: ITRD
  • Created Date: Nov 21 2010 6:02AM