Randomized trial assesses load-carrying performance using a new elastoplastic model for axially loaded piles, suggesting improved accuracy for predictive modeling.
Key Points
This research aims to develop a double-hardening elastoplastic load-transfer model for better predicting the load–settlement responses of axially loaded piles.
Developed a double-hardening elastoplastic load-transfer model based on pile-soil interface formulations.
Utilized the Hardening Soil model for shear hardening and the Modified Cam-clay model for volumetric hardening.
Validated the model with interface direct shear tests and static pile load tests.
The shear stress–displacement curves and pile-head load–settlement responses closely matched measured data.
MAPE values were lower than 5%, indicating high prediction accuracy.
R2 values exceeded 0.96 in all validation cases, demonstrating model robustness.