Seismic Earth pressures

Dear plaxis,

when obtaining earth pressures behind a retaining structure from plaxis by using a cross section to get the sigma xx, in a pseudostatic analysis phase, the obtained earth pressures are a total right?

Meaning that, to obtain only the seismic correspondent, one has to subtract the corresponding static phase right?

Parents
  • Dear Abdirahman,

    The results obtained in Output are not separating the components of the stresses depending on the type of analysis. The σxx are the total horizontal stresses for that calculation phase.
    Providing that changes in geometry, materials and boundary conditions (including loading conditions) have not been performed, apart from the introduction of the pseudo-static forces, the differences in stresses between those obtained for the final step of the pseudo-static analysis and for the final step of the parent (static) phase may provide an estimation of the pseudo-static induced stresses, although redistribution of stresses (and, therefore, changes also in the static component) might have occurred during the pseudo-static analysis.
Reply
  • Dear Abdirahman,

    The results obtained in Output are not separating the components of the stresses depending on the type of analysis. The σxx are the total horizontal stresses for that calculation phase.
    Providing that changes in geometry, materials and boundary conditions (including loading conditions) have not been performed, apart from the introduction of the pseudo-static forces, the differences in stresses between those obtained for the final step of the pseudo-static analysis and for the final step of the parent (static) phase may provide an estimation of the pseudo-static induced stresses, although redistribution of stresses (and, therefore, changes also in the static component) might have occurred during the pseudo-static analysis.
Children