Abstract:
Effects of Self-weight on Thermal Response of Energy Piles
Arash Saeidi Rash Olia, Dunja Peri?, Kansas State University
Energy geostructures such as piles, walls, and slabs are sustainable eco-friendly techniques to provide supplemental heating and cooling for the buildings. These multifunctional structural elements simultaneously transfer superstructure loads and exchange thermal energy with ground layers, thus providing supplemental energy for space heating and cooling.
The aim of this study is to further advance understanding of the impact of the pile self-weight on the response of a single energy pile subjected to thermal loading through the use of mechanics-based analytical solutions. The restraints imposed to an energy pile by the surrounding soil during heating and cooling induce compressive and tensile stress in the pile respectively. In this study, we present recently derived analytical solutions for thermal displacements, strains, and stresses with and without consideration of the self-weight of the pile. We compare the solutions with experimental results for different loading scenarios, thus providing the mechanics based assessment of the effects of self-weight on the observed thermal response.