Measurements and predictions of settlements induced by preloading and vertical drains on a heterogeneous soil deposit
Giuseppe Di Filippo, Valeria Bandini, Ernesto Cascone, Giovanni Biondi *
Dipartimento di Ingegneria Civile, Informatica, Edile, Ambientale e Matematica Applicata, University of Messina, Contrada di Dio, 98166 Messina, Italy
a b s t r a c t
The paper describes a comparison between in situ measurements and theoretical predictions of the ground settlements induced by preloading and vertical drains on a heterogeneous soil deposit. Settlement measurements, normalized with respect to the final value of the consolidation settlements computed using the hyperbolic approach, were compared with an average degree of consolidation predicted by a rigorous theoretical solution accounting for radial and vertical consolidation induced by a time-dependent loading history and including the smear effect. The comparison allowed estimating proper values of the diameter describing the smeared zone and revealed the remarkable influence of the lithological and mechanical heterogeneity of the soil deposit.
Settlement measurements and prediction.Preloading with vertical drain.Radial consolidation.Soil heterogeneity.Smear effect