COMPUTERIZED SLOPE STABILITY ANALYSIS; THE SLIDING BLOCK

THIS PAPER PRESENTS A COMPUTER PROGRAM FOR A COMMON TYPE OF ANALYSIS OF THE SLOPE STABILITY PROBLEM: THE POSSIBILITY OF SLOPE FAILURE BY TRANSLATION OF A MASSIVE BLOCK ALONG A WEAK LAYER OF SOIL. THE PROBLEM, WHICH CAN OCCUR IN EITHER NATURAL OR MAN-MADE SLOPES, IS MOST GENERALLY REFERRED TO AS THE SLIDING BLOCK PROBLEM. VARIATION IN THE WATER SURFACE POSITION REQUIRES THREE SUBROUTINES OR CASES. THE PROGRAM AUTOMATICALLY SEQUENCES SELECTED POTENTIAL SLIDING SURFACES ONE BY ONE, THEN SELECTS THE DESIRED WATER SURFACE CASE, AND FINALLY COMPUTES THE FACTOR OF SAFETY AGAINST SLIDING ALONG THE BASE OF THE CENTRAL BLOCK. THE ANALYSIS IS BASED ON TOTAL UNIT WEIGHTS AND BOUNDARY FORCES. IT IS POSSIBLE TO CONSIDER 10 DIFFERENT SOIL TYPES HAVING VERY DIFFERENT SOIL PARAMETERS, SUCH AS UNIT WEIGHT, MOHR-COULOMB COHESION INTERCEPT, AND MOHR-COULOMB ANGLE OF FRICTION. A MAXIMUM OF 12 CONTINUOUS SOIL LAYERS AT ANY INCLINATION CAN BE CONSIDERED IN THE PRESENT PROGRAM. A TOTAL OF 10 VERTICAL STRIP LOADS OF DIFFERENT INTENSITIES CAN BE PLACED ON THE GROUND SURFACE ANYWHERE BELOW THE TOE AND ABOVE THE CREST. FINALLY, WITH ALL THIS INFORMATION, 10 SLIDING SURFACES CAN BE CONCURRENTLY ANALYZED FOR THE FACTOR OF SAFETY. THIS FACTOR IS APPLIED TO THE STRENGTH OF THE SOIL AT THE BASE OF THE CENTRAL BLOCK, ASSUMING THAT THERE IS LIMITING EQUILIBRIUM FOR THE ACTIVE AND PASSIVE EARTH PRESSURE FORCES AT THE ENDS OF THE CENTRAL BLOCK.

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 9-17
  • Monograph Title: Soil slopes and embankments
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00236754
  • Record Type: Publication
  • ISBN: 0309021901
  • Files: TRIS, TRB
  • Created Date: Jan 31 1974 12:00AM