Applicability of Conventional p-y Relations to the Analysis of Piles in Laterally Spreading Soil

作者：McGann Christopher R; Arduino Pedro^*; Mackenzie Helnwein Peter

来源：Journal of Geotechnical and Geoenvironmental Engineering, 2011, 137(6): 557-567.

DOI：10.1061/(ASCE)GT.1943-5606.0000468

• Lateral spreading
• Soil-pile interaction
• 3D FEA
• p-y curves
• Laterally loaded piles.

This paper presents a kinematic analysis of a single pile embedded in a laterally spreading layered soil profile and discusses the relevancy of conventional analysis models to this load case. The research encompasses the creation of three-dimensional (3D) finite-element (FE) models using the OpenSees FE analysis platform. These models consider a single pile embedded in a layered soil continuum. Three reinforced concrete pile designs are considered. The piles are modeled using beam-column elements and fiber-section models. The soil continuum is modeled using brick elements and a Drucker-Prager constitutive model. The soil-pile interface is modeled using beam-solid contact elements. The FE models are used to evaluate the response of the soil-pile system to lateral spreading and two alternative lateral load cases. Through the computation of force density-displacement (p-y) curves representative of the soil response, the FE analysis (FEA) results are used to evaluate the adequacy of conventional p-y curve relationships in modeling lateral spreading. It is determined that traditional p-y curves are unsuitable for use in analyses where large pile deformations occur at depth. DOI: 10.1061/(ASCE)GT.1943-5606.0000468.

• 出版日期2011-6