Passive Earth Pressure with Critical State Concept

This paper presents experimental data of earth pressure acting against a vertical rigid wall, which moved toward a mass of dry sand. The backfill had been placed in lifts to achieve relative densities of 38, 63, and 80%. The instrumented retaining-wall facility at National Chiao Tung University in Taiwan was used to investigate the effects of soil density on the development of earth pressure. Based on the experimental data, it has been found that the Coulomb and Terzaghi solutions calculated with the peak internal friction angle significantly overestimated the ultimate passive thrust for the retaining wall filled with dense sand. As the wall movementS exceeded 12% of the wall height H, the passive earth thrust would reach a constant value, regardless of the initial density of backfill. Under such a large wall movement, soils along the rupture surface had reached the critical state, and the shearing strength on the surface could be properly represented with the residual internal-friction angle. The ultimate passive earth pressure was successfully estimated by adopting the critical state concept to either Terzaghi or Coulomb theory. CE Database keywords: Passive pressure; Earth pressure; Sand; Vertical angles.

[1]  P. W. Rowe,et al.  Passive Earth Pressure Measurements , 1965 .

[2]  Z. Eisenstein,et al.  Methods of Estimating Lateral Loads and Deformations , 1970 .

[3]  W. D. Kovacs,et al.  An Introduction to Geotechnical Engineering , 1981 .

[4]  Yung-Show Fang,et al.  PASSIVE EARTH PRESSURES WITH VARIOUS WALL MOVEMENTS , 1994 .

[5]  Fumio Tatsuoka,et al.  SHEAR RESISTANCE BETWEEN SAND AND SMOOTH OR LUBRICATED SURFACES , 1985 .

[6]  P Nandakumaran,et al.  MODEL STUDY OF PASSIVE PRESSURE IN SAND , 1969 .

[7]  Yung-Show Fang,et al.  EARTH PRESSURES WITH SLOPING BACKFILL , 1997 .

[8]  K. Terzaghi.  GENERAL WEDGE THEORY OF EARTH PRESSURE , 1941 .

[9]  K. Terzaghi,et al.  Soil mechanics in engineering practice , 1948 .

[10]  Vasily Vasilevic Sokolovski,et al.  Statics of soil media , 1960 .

[11]  J. Kérisel,et al.  Tables for the calculation of passive pressure, active pressure and bearing capacity of foundations , 1948 .

[12]  John Dunnicliff,et al.  Geotechnical Instrumentation for Monitoring Field Performance , 1988 .

[13]  A. Casagrande,et al.  Characteristics of cohesionless soils affecting the stability of slopes and earth fills , 1940 .

[14]  Braja M. Das,et al.  Principles of Foundation Engineering , 1984 .

[15]  J. Michael Duncan,et al.  Passive earth pressures : Theories and tests , 2001 .

[16]  H. Kishida,et al.  INFLUENTIAL FACTORS OF FRICTION BETWEEN STEEL AND DRY SANDS , 1986 .

[17]  P. L. Bransby,et al.  EXPERIMENTAL AND THEORETICAL INVESTIGATIONS OF A PASSIVE EARTH PRESSURE PROBLEM , 1970 .

[18]  K Mortensen.  STATICALLY ADMISSIBLE EARTH PRESSURE AND BEARING CAPACITY CALCULATIONS , 1993 .

[19]  J B Hansen,et al.  Earth pressure calculation , 1961 .

[20]  Minoru Matsuo,et al.  EXPERIMENTAL STUDY ON EARTH PRESSURE OF RETAINING WALL BY FIELD TESTS , 1978 .

[21]  G Philipponat.  FOUNDATIONS AND EARTH STRUCTURES , 1979 .