EARTH PRESSURE ACTING ON STEEL ARCH SUPPORTS AND LINING CONCRETE IN SWELLING ROCKS

AT THE "KAMUI" TUNNEL (L=4,523M), CONSTRUCTUED THROUGH A SERPENTINE FORMATION NOTED FOR SWELLING PHENOMENA, THE EARTH PRESSURE WAS MEASURED ON A LARGE SCALE TO INVESTIGATE THE CAUSE OF SWELLING, THE AMOUNT OF SWELLING, AND THE STRONG EARTH PRESSURE ANTICIPATED. THE MAIN ITEMS OF MEASUREMENT WERE THE STRESSES OCCURRING IN THE STEEL ARCH SUPPORTS AND THE LINING CONCRETE, THE EXTERNAL FORCE (I.E. THE EARTH PRESSURE) WORKING ON THE STEEL ARCH SUPPORTS, AND THE VOLUME OF SWELLING AT THE GROUND SURFACE. THE RESULTS OF THE MEASUREMENT SHOWED THAT THE SWELLING OF SERPENTINE WAS CAUSED BY THE EXPANSION AND MOVEMENT OF THE PLASTIC ZONE PRODUCED AROUND THE TUNNEL. MAXIMUM POSSIBLE EARTH PRESSURE AND THE DESIGN EARTH PRESSURE WERE CALCULATED TO FACILITATE THE DESIGNING OF STEEL ARCH SUPPORT AND THE LINING CONCRETE, APPLICABLE TO CERTAIN CASES CHARACTERIZED BY EARTH PRESSURE. THE ACTUALLY MEASURED VALUES OF THE SECTION FORCE PRODUCED IN THE STEEL ARCH SUPPORT AGREED WITH THE CALCULATED VALUES BASED ON THE ELASTICITY THEORY. /AUTHOR/

  • Supplemental Notes:
    • Vol 2, No 4-28, PP 587-591, 7 FIG
  • Authors:
    • Takibuchi, K
  • Publication Date: 1970

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00236208
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 22 1972 12:00AM