Houman Soleimani Fard, Nicol Chang

Abstract: Many research works have proved that CPT results (especially the cone resistance, qc) are not only a function of the properties of the soil in which the cone is located, but also the layers ahead and behind that. in this paper, using series of numerical simulations, variations of qc in a multiple-layered soil with sharp borders were studied. The model consisted of a 50- to 300-mm-thick layer of soft fine grained soil embedded in dense coarse grained layers. The ratio of the moduli of elasticity of the soft to dense soils, Rs, ranged from 0.042 to 0.833. The transition zones (the distances above and below the soft layer over which the qc is affected) were analyzed as a function of hs and Rs. Further, a method was introduced to capture and back-calculate the actual qc from the measured values.

Keywords: CPT, Layered Soils, Thin-Layer Correction, Numerical Modelling

Date Published: July 5, 2022
DOI: 10.11159/ijci.2022.009

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