A Simple Method for Predicting the Response of Single Energy Pile Considering Temperature Variation of Pile-Soil Interface
INTERNATIONAL JOURNAL OF GEOMECHANICS（2023）
Shandong Univ
Abstract
To capture the influence of temperature variation of pile-soil interface on the response of a single energy pile, numerical simulation and theoretical analysis were adopted in this paper. The temperature variation mechanism of a single energy pile was clarified using numerical simulation, and the temperature variation model of the pile-soil interface was established. Considering the influence of temperature variation on the conventional load transfer model of the pile-soil interface, the improved hyperbolic functions were proposed, and the parameters related to the improved load transfer model were determined. To predict the response of a single energy pile considering the temperature variation of the pile-soil interface, an iterative algorithm was developed using load transfer methods. Comparisons of the load-settlement response of three well-documented cases between the present computation results and the results derived from other methods were made to verify the reliability of the calculation method. Furthermore, a parameter analysis was carried out to assess the influence of soil properties and the parameters related to the load transfer models on the thermomechanical response of a single energy pile.
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Key words
Energy pile,Pile-soil interface,Temperature variation,Load transfer method,Load-settlement response
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