The paper accounts for a comprehensive parametric study carried out on a single pile embedded in layered soils, in order to evaluate pile bending moments due to kinematic interaction. The analyses have been performed using a properly calibrated Beam-on-Dynamic-Winkler-Foundation (BDWF) model. Kinematic effects in the pile have been evaluated as function of: (i) stiffness contrast between upper and lower layer, (ii) depth of upper layer, (iii) waveform of input motion and (iv) soil damping adopted in the free-field site response analysis. On the basis of the above results, new regression analyses have been carried out for computing the transient pile bending moments at the soil layer interface, revisiting the predictive equations introduced by Nikolaou et al. (2001) and Mylonakis (2001).
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