## Pseudostatic Analyses

## Pseudostatic Analyses

(OP)

The recently published book "Soil Strength and Slope Stability" by Duncan and Wright discusses procedures for conducting pseudostatic analyses. I often evaluate simplified seismic displacements of slopes/embankments and use pseudostatic analyses to estimate yield acceleration.

Duncan and Wright state a single stage pseudostatic analysis may be performed using the R strength envelope from a CU test together with effective stresses and steady state pore water pressure.

The use of effective stresses and steady state pore water pressures with a total stress (R) shear strength envelope seems contrary to me and contrary to the dirth of literature on the subject. I have always used total stresses and no pore water pressure when using a total stress (R) shear strength envelope.

Any thoughts on this?

Duncan and Wright state a single stage pseudostatic analysis may be performed using the R strength envelope from a CU test together with effective stresses and steady state pore water pressure.

The use of effective stresses and steady state pore water pressures with a total stress (R) shear strength envelope seems contrary to me and contrary to the dirth of literature on the subject. I have always used total stresses and no pore water pressure when using a total stress (R) shear strength envelope.

Any thoughts on this?

## RE: Pseudostatic Analyses

## RE: Pseudostatic Analyses

## RE: Pseudostatic Analyses