IN SITU STUDY OF THE BEARING CAPACITY OF DRIVEN PILES IN EXPANSIVE SOIL

RESULTS ARE PRESENTED OF EXPERIMENTAL STUDY OF THE BEHAVIOR OF DRIVEN REINFORCED CONCRETE PILES IN A SOIL UNDERGOING SWELLING ON WETTING. THE STUDY CONSISTED OF IN SITU TESTING OF PILES AND TEST PLATES OF DIFFERENT SIZES IN A SOIL WITH NATURAL MOISTURE CONTENT AND AFTER WETTING. DEFORMATIONAL AND STRENGTH PROPERTIES OF EXPANSIVE KHVALYNSK CLAYS, AND THE DEGREE TO WHICH THESE PROPERTIES CHANGE ON WETTING, WERE DETERMINED IN THE LABORATORY WITH THE AID OF OEDOMETERS AND BY THE BALL-PLATE METHOD. IT IS SHOWN THAT THE USE OF PILE FOUNDATIONS REDUCES THE AMOUNT OF RISE OF A BUILDING, DUE TO THE SWELLING OF WETTED CLAYS, AND ENSURES THE STRENGTH OF THE STRUCTURE. ON THE BASIS OF THE RESULTS, SPECIFIC FEATURES OF PILE BEHAVIOR IN EXPANSIVE SOIL AND THE VARIATION OF THE BEARING CAPACITY OF PILES ON WETTING, ARE ESTABLISHED. A NEW DESIGN METHOD FOR DRIVEN PILES IN EXPANSIVE SOIL IS RECOMMENDED, AND DESIGN DATA ARE GIVEN FOR KHVALYNSK CLAYS, FOUND IN THE LOWER STRETCHES OF THE VOLGA. THESE DATA INCLUDE< SOIL RESISTANCE AT THE LATERAL SURFACE OF THE PILE AND UNDER ITS TIP, THE AMOUNT OF ITS RISE AND VALUES OF THE SWELLING PRESSURE ACTING ON IT ON WETTING. /RRL/A/

  • Supplemental Notes:
    • Vol 1, pp 81-83, 5 FIG, 1 PHOT, 6 REF
  • Authors:
    • Doroshkevich, N M
    • Boim, U P
  • Publication Date: 0

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Filing Info

  • Accession Number: 00232131
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Apr 27 1970 12:00AM