T. Masood et Jk. Mitchell, ESTIMATION OF IN-SITU LATERAL STRESSES IN SOILS BY CONE-PENETRATION TEST, Journal of geotechnical engineering, 119(10), 1993, pp. 1624-1639
A simple method for the estimation of in situ lateral stress in soils
using the results of a cone-penetration test (CPT) is described and il
lustrated. The method is based on the dependence of cone-penetration-t
est sleeve friction on lateral stress. It recognizes that insertion of
the cone causes soil disturbance, so the normal stress on the frictio
n sleeve must differ from the initial in situ value. The lateral earth
pressure on the sleeve during penetration is assumed equal to the Ran
kine passive pressure value. Field test results show that the method g
ives estimates of lateral stress that compare well with values determi
ned by other procedures, such as the self-boring pressuremeter, the fl
at-plate dilatometer, laboratory tests on undisturbed samples, and the
Brooker and Ireland correlations. The method in its present form requ
ires separate assumption or determination of the overconsolidation rat
io of the soil.