chapter  51
CPT in thinly inter-layered soils
ByD.A. de Lange, J. Terwindt, T.I. van der Linden
Pages 6

The interpretation of CPT within intervals consisting of multiple sequences of thin soil layers holds large uncertainty. For multi-layer systems, it is expected that the cone resistance would be influenced by the layer thickness (relative to the cone diameter), the number of layers within the zone of influence and the characteristic cone resistances of the individual layers. The Dutch method for determination of the pile base resistance can be used to simulate the cone resistance in thinly inter-layered soils and to come up with correction factors as function of the aspects mentioned above. A test program (parametric study) is defined in order to validate the proposed modified Dutch method. The proposed simulation method fits reasonably well with the interim test results.