FAILURE OF FOUNDATIONS AND SLOPES ON LAYERED DEPOSITS IN RELATION TO SITE INVESTIGATION PRACTICE

TWELVE RECENT FAILURES OR UNSATISFACTORY MOVEMENTS OF WORKS ON OR IN NON-UNIFORM STRATA ARE DESCRIBED, WHERE THE ORIGINAL GROUND WATER LEVELS WERE NOT FAR REMOVED FROM GROUND LEVEL. A FEATURE COMMON TO ALL CASES IS THAT THE GEOLOGICAL ARRANGEMENT OF THE STRATA AND THE MACRO-FABRIC OR 'SECONDARY STRUCTURE' OF CLAY DEPOSITS RESULTED IN UNEXPECTED DISTRIBUTIONS OF WATER PRESSURE. THESE OCCURED (1) AFTER CONSTRUCTION DUE TO LATER WORKS IN THE SAME VICINITY; (2) DURING CONSTRUCTION DUE TO CHANGES IN GROUND CONDITIONS IMPOSED BY THE WORKS; AND (3) IN CERTAIN CASES DURING SHELL AND AUGER DRILLING BEFORE CONSTRUCTION. THE SIGNIFICANCE OF THE CASE HISTORIES IS DISCUSSED IN RELATION TO SITE INVESTIGATION PRACTICE. /RRL/

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Filing Info

  • Accession Number: 00234749
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Apr 12 1971 12:00AM