Kinematic bending moments in pile foundations

• Published in: Soil dynamics and earthquake engineering (1984) Vol. 30; no. 3; pp. 119 - 132
• Main Authors: Dezi, F., Carbonari, S., Leoni, G.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.03.2010; Elsevier
• Subjects: Dynamics; Earth sciences; Earth, ocean, space; Earthquakes, seismology; Engineering and environment geology. Geothermics; Engineering geology; Exact sciences and technology; Internal geophysics; Kinematic interaction; Natural hazards: prediction, damages, etc; Pile foundations; Piles; Soil–structure interaction; Pile foundations; Piles; Kinematic interaction; Soil–structure interaction; Dynamics; Soil-structure interaction; cross sections; interfaces; foundations; kinematics; structure soil interaction; propagation; bedrock; piles; soils
• ISSN: 0267-7261; 1879-341X
• DOI: 10.1016/j.soildyn.2009.10.001

In this paper the kinematic seismic interaction of single piles embedded in soil deposits is evaluated by focusing the attention on the bending moments induced by the transient motion. The analysis is performed by modeling the pile like an Euler–Bernoulli beam embedded in a layered Winkler-type medium. The excitation motion is obtained by means of a one-D propagation analysis. A comprehensive parametric analysis is carried out by varying the main parameters governing the dynamic response of piles like the soil properties, the bedrock location, the diameter and embedment in the bedrock of piles. On the basis of the parametric analysis, a new design formula for predicting the kinematic bending moments for both the cross-sections at the deposit–bedrock interface and at the pile head is proposed.