Active and Passive Coefficients of Lateral Earth Pressures
DeepEX offers a number of options for evaluating the Active and Passive coefficients that depend on the analysis method employed (Nonlinear or Conventional). THe following sections present the methods employed in determining active and passive coefficients/pressures in Conventional and Nonlinear analyses respectively. However, in all cases the methods listed in Table 1 are available for computing active and passive coefficients.
Table 1: Available Exact Solutions for Active and Passive Lateral Earth Pressure Coefficients
Method | Active Coefficient | Passive Coefficient | |||||||
Available | Surface angle | Wall Friction | EQ2 | Available | Surface angle | Wall Friction | EQ | ||
NO | Rankine | YES | NO1 | NO1 | NO | YES | NO1 | NO1 | NO |
YES | Coulomb | YES | YES | YES | NO | YES | YES | YES | YES |
NO | Caquot-Kerisel Tabulated | NO | - | - | - | YES | YES | YES | NO |
YES | Lancellota | NO | - | - | - | YES | YES | YES | YES |
Notes:
Rankine method automatically converts to Coulomb if a surface angle or wall friction is included.
Seismic effects are added as separately.
Active and Passive Pressures in the Conventional Analyses
Active and Passive Pressures for Non-Level Ground
Peck 1969 Earth Pressure Envelopes
FHWA Apparent Earth Pressures
FHWA Recommended Apparent Earth Pressure Diagram for Soft to Medium Clays
FHWA Loading for Stratified Soil Profiles
Modifications to stiff clay and FHWA diagrams
Custom Trapezoidal Pressure Diagrams
Two Step Rectangular Pressure Diagrams
Vertical wall adhesion in undrained loading
WMATA Construction Manual Pressures
Training Video: Lateral Earth Coefficients and Soil Pressure Methods in DeepEX
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