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Active and passive coefficients of lateral earth pressures

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:


  1. Rankine method automatically converts to Coulomb if a surface angle or wall friction is included.

  2. 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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