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p-y Formulations from Elastoplastic Finite-Element Analysis of Laterally Loaded Piles.

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Bibliographic Details
Title: p-y Formulations from Elastoplastic Finite-Element Analysis of Laterally Loaded Piles.
Authors: Wang, Yao1 (AUTHOR), Salgado, Rodrigo2 (AUTHOR) rodrigo@ecn.purdue.edu, Prezzi, Monica3 (AUTHOR) mprezzi@ecn.purdue.edu
Source: Journal of Geotechnical & Geoenvironmental Engineering. Sep2026, Vol. 152 Issue 9, p1-19. 19p.
Subjects: Finite element method, Clay soils, Building foundations, Eccentric loads, Bored piles, Soil-structure interaction
Abstract: The p-y method has commonly been used in the design of laterally loaded piles. The results of a p-y analysis are highly dependent on the p-y curves or relationships used in the analysis. Since the p-y curves routinely used in p-y analyses had been traditionally derived empirically from data obtained from a limited number of lateral pile load tests and in situ test data, the domain of applicability of the p-y method would necessarily be limited. An alternative path for p-y curve development is to obtain them from realistic numerical analyses, an approach explored in this study. This paper presents the results of a series of three-dimensional finite-element analyses of single piles in uniform soil profiles of sand and clay using advanced two-surface-plasticity constitutive models. The analyses were performed for different values of pile diameter, pile length, and lateral load eccentricity. For sand, we considered various values of relative density. We extracted p-y curves from the simulation results and studied the factors that would be expected to have an impact on the p-y curves: relative density, soil type, pile diameter, load eccentricity, and depth to the water table. The analyses were validated against load test results. Based on these analyses, we propose a new set of p-y relationships that can be used for sand or clay in the design of laterally loaded piles. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:The p-y method has commonly been used in the design of laterally loaded piles. The results of a p-y analysis are highly dependent on the p-y curves or relationships used in the analysis. Since the p-y curves routinely used in p-y analyses had been traditionally derived empirically from data obtained from a limited number of lateral pile load tests and in situ test data, the domain of applicability of the p-y method would necessarily be limited. An alternative path for p-y curve development is to obtain them from realistic numerical analyses, an approach explored in this study. This paper presents the results of a series of three-dimensional finite-element analyses of single piles in uniform soil profiles of sand and clay using advanced two-surface-plasticity constitutive models. The analyses were performed for different values of pile diameter, pile length, and lateral load eccentricity. For sand, we considered various values of relative density. We extracted p-y curves from the simulation results and studied the factors that would be expected to have an impact on the p-y curves: relative density, soil type, pile diameter, load eccentricity, and depth to the water table. The analyses were validated against load test results. Based on these analyses, we propose a new set of p-y relationships that can be used for sand or clay in the design of laterally loaded piles. [ABSTRACT FROM AUTHOR]
ISSN:10900241
DOI:10.1061/JGGEFK.GTENG-13864