ArticleScientific reports2025
An analytical solution for load transfer mechanism of Plum blossom pile foundations.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Plum blossom pile, a recently developed non-cylindrical pile, exhibits a load transfer mechanism distinct from conventional circular piles due to its unique cross-section. This study presents an analytical approach to characterize its load transfer behavior based on cross-sectional geometry and vertical shearing mechanisms. Based on the equilibrium analytical method, expressions for axial force/dragload and skin friction are derived. The effects of pile-soil shear action, cross-sectional shape, and effective vertical stress were investigated. The results indicate that the convex zone of the pile increases the soil squeezing stress at the pile-soil interface, and the sharp corner zone creates a semi-soil-plug space made up of circular segments, which increases the vertical effective stress of surrounding soil and then increases the skin friction, which means the cross-section of plum blossom pile has a significant enhancement effect on the shaft resistance. The proposed analytical method provides an effective approach for describing the bearing behavior of the plum blossom pile.
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