netsonicyxf
Structural
- Feb 19, 2010
- 49
This is from "An Introduction to Geotechnical Engineering (3e)" by Robert Holtz etc
I add "B" and "C" in the above figure. The "u0" is not the excess pore pressure, it's the background pressure which ensure the 100% saturation for the soil specimen.
This is what I'm understanding
When the pore pressure is dissipating, the "B" on the ESP is moving to "C" on the TSP, then it is moving away from the Kf line, instead of moving to the Kf line.
Therefore long-term conditions should be safe, which conflicts to what's said in the book.
For the foundation loading of an overconsolidated clay, the TSP and ESP would look something like the paths shown in Figs. 13.4 and 13.6(b). As the negative excess pore pressure dissipates, the stresses on the element move closer to the Kf line, which means that the long-term conditions are actually the least safe after dissipation of the pore pressure has occurred.
I add "B" and "C" in the above figure. The "u0" is not the excess pore pressure, it's the background pressure which ensure the 100% saturation for the soil specimen.
This is what I'm understanding
When the pore pressure is dissipating, the "B" on the ESP is moving to "C" on the TSP, then it is moving away from the Kf line, instead of moving to the Kf line.
Therefore long-term conditions should be safe, which conflicts to what's said in the book.
