Numerical analysis of energy piles under different boundary conditions and thermal loading cycles
1 Assistant Professor, Civil Engineering Department, Sharif University of Technology, Tehran, Iran
2 Graduate Student, Civil Engineering Department, Sharif University of Technology, Tehran, Iran
3 Associate Professor, Department of Structural Engineering, University of California San Diego, La Jolla, USA
4 Ph.D., Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Colorado Boulder, Boulder, USA
a Corresponding author: email@example.com
The thermo- mechanical behavior of energy piles has been studied extensively in recent years. In the present study, a numerical model was adapted to study the effect of various parameters (e.g. heating/cooling temperature, head loading condition and soil stiffness) on the thermo-mechanical behavior of an energy pile installed in unsaturated sandstone. The results from the simulations were compared with measurements from a thermal response test on a prototype energy pile installed beneath a 1-story building at the US Air Force Academy (USAFA) in Colorado Springs, CO. A good agreement was achieved between the results obtained from the prototype and the numerical models. A parametric evaluation were also carried out which indicated the significance of the stiffness of the unsaturated sandstone and pile’s head loading condition on stress-strain response of the energy pile during heating/cooling cycles.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.