Behavior of Rigid and Semi-Rigid Monopiles: A Critical Analysis of Ultimate Capacity
Behavior of Rigid and Semi-Rigid Monopiles: A Critical Analysis of Ultimate Capacity
This study presents a comprehensive investigation into the ultimate bearing capacity of piles embedded in sand, employing three-dimensional finite element analyses based on the hypoplastic constitutive model. The two-triangle soil pressure distribution model proposed by Prasad and Chari (1999) is evaluated and recommended for rigid and semi-rigid piles. However, finite element analysis reveals limitations in the model's ability to accurately capture soil-pile interactions. Existing theoretical models are found to underestimate the ultimate soil pressure coefficient Kult, a crucial parameter for predicting pile ultimate bearing capacity. To address this, soil pressure-based methods are developed, incorporating multi-parameter linear regression of Pult and Kult to account for the influence of pile-soil characteristics. These methods, when combined with appropriate modification factors, have proven effective in predicting pile ultimate capacity, particularly for larger diameter piles.
W. Wei; F. Wang; Fan Yang; Chengchao Guo
5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG2025)
8 - Monopile design to lateral monotonic loads
https://doi.org/10.53243/ISFOG2025-473
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