In questi casi generalmente la verifica va fatta al taglio e al momento:

http://geoscience.wes.army.mil/SardisDam_Hall.PDF

http://www.icfi.com/Markets/Environment/doc_files/lateral-resistance.pdf

http://www.eng-tips.com/viewthread.cfm?qid=154387&page=8

http://www.eng-tips.com/viewthread.cfm?qid=158103

http://www.ce.gatech.edu/~rd72/tri-center-workshop/Final%20Presentations/PBE%20of%20Bridges%20on%20Liquefiable%20Soils.pdf

http://www-civ.eng.cam.ac.uk/geotech_new/publications/TR/TR324.pdf

Però mi sembra che gli applicativi di verifica di stabilità il taglio sulle palificate, se non il momento, lo forniscano...

"Data speak for themselves" -Reverend Thomas Bayes 1702-1761
P(Ai|E)=(P(E|Ai)P(Ai))/P(E)