Cross-sectional thermo-mechanical responses of energy piles

Despite the widespread research on energy piles, there remain critical knowledge gaps in cross-sectional thermal responses of concrete piles. This paper implements a unique approach by developing and validating numerical model with temperatures strains measured field-scale pile (diameter = 0.6 m length 10 m), strengthening reliability modelling for The was used to investigate influences inlet fluid temperature, soil conductivity, elastic modulus, expansion coefficient, presence nearby at centre-to-centre distance 3.5 an pile. These investigations demonstrate practical significance above parameters results show that temperature stresses were largest centre reduced increasing radial pile's edge, differences up 4 °C 2.2 MPa, respectively, between edge. A comparison existing stress estimation methods cross-section commonly based average single spot, reveals lead overdesign 2 MPa. Therefore, actual variations planar piles should be accounted design