72_CEG 4012 Notes Fall 2011 CEG 4012 Notes Fall 2011

72_CEG 4012 Notes Fall 2011 CEG 4012 Notes Fall 2011 - ~:...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
X13 Useful for water table, c u , and 8 I I IIOTII' L (~ SooN 0...,., 101M"" cf _,";l~_"",,_- 1....... - &-I;~I-_"'''"" II.UI. ......... contl.'IMI. _.(a'. .' f\GIiU. Z .. .. ! Oollilar SILT-SAND V c.aotlllH MIXTURES -~- ~. ---- /' :f CLAYEY-SANDS I-! AND SILTS / ~ANDY AlID SILTY 1/ SAND /. CLAYS ~ ~ENSITIVE ... :II V V NDIl-FISSUR£D OJ L 1Il0~yNIC ... l5 v."sul,_ > I-- - Loou / I V I~r--. ." snll V....... - - ... . I --. ..t. . L ".dlom I. ORGANIC I --- ~ysaUIXEO SOILS Sof' Friel'" Rilio-. _ ..I. I--j,-;;,- Act.- "ID Low va. ... el to .... WIlt•• 11.10 • F.. f. ., el,. IOQ I I I 0 1 2 3 4 5 6 7 FRICTION RATIO. (SLEEVE FRICTION/CONE BEARING).% I o May include measurement of pore pressure at tip. OCR estimates. Decay curves useful for Cv k. o Use friction ratio , R" to estimate soil 1000 type (Schmertmann, 1978): , R = unit friction x100% = ~ x1 00% ~ 4 f unit bearing qc ~ 2i o Much research done at UF by "- Dr. Schmertmann. ~ z 100 o
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ~: because of measurement location f 3 4 o Cone bearing is a function of relative ell density and both vertical and horizontal ~ l stress (depth). Direct correlation of qc ~ to bearing factors for clay and sand. i 10 o Correlation of friction angle to qc in :z: 8 sands (Bowles, 1996) through BC. 5 G Q 4 o Correlation of undrained shear strength, c u , to qc in clays through Be: qc- a'y } C u = N (Bowles, 1996 . k o Correlation of qc to stiffness (E) is necessarily conservative - too conservative for OC soils and clean sands. 301-I I I I I I I q.-Po s,,=~ Correlation between peak friction angle r;' and q. for uncementcd quartz sands. Data/rom Robertson and Campanella (/983) and others....
View Full Document

This note was uploaded on 02/10/2012 for the course CEG 4012 taught by Professor Staff during the Fall '08 term at University of Florida.

Ask a homework question - tutors are online