TY - JOUR
T1 - Extension of Winkler's solution to non-isothermal conditions for capturing the behaviour of plane geostructures subjected to thermal and mechanical actions
AU - Zannin, Jacopo
AU - Rotta Loria, Alessandro F.
AU - Llabjani, Qazim
AU - Laloui, Lyesse
N1 - Publisher Copyright:
© 2020 The Authors
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/12
Y1 - 2020/12
N2 - Before this study, no analytical models had been made available for describing the behaviour of plane geostructures subjected to thermal and mechanical actions. This knowledge gap notably represented a limitation for investigations about the behaviour of so-called energy geostructures, which are subjected to the considered actions due to their geothermal heat exchanger and structural support roles. In this study, the first analytical model that allows describing the behaviour of plane geostructures subjected to thermal and mechanical actions is presented. This model extends Winkler's solution to non-isothermal conditions for quantifying the effects of temperature variations, axial loads, transversal loads and bending moments applied to plane geostructures resting on an elastic soil mass. The model is applied to the analysis of an elementary unit represented by a single beam as well as to more complex plane geostructures using the superposition principle. The obtained results are compared with predictions deriving from more rigorous yet time-consuming numerical analyses, showing close agreement. This result makes the developed analytical model a useful tool for scientific and engineering purposes, paving the way for future developments in this scope.
AB - Before this study, no analytical models had been made available for describing the behaviour of plane geostructures subjected to thermal and mechanical actions. This knowledge gap notably represented a limitation for investigations about the behaviour of so-called energy geostructures, which are subjected to the considered actions due to their geothermal heat exchanger and structural support roles. In this study, the first analytical model that allows describing the behaviour of plane geostructures subjected to thermal and mechanical actions is presented. This model extends Winkler's solution to non-isothermal conditions for quantifying the effects of temperature variations, axial loads, transversal loads and bending moments applied to plane geostructures resting on an elastic soil mass. The model is applied to the analysis of an elementary unit represented by a single beam as well as to more complex plane geostructures using the superposition principle. The obtained results are compared with predictions deriving from more rigorous yet time-consuming numerical analyses, showing close agreement. This result makes the developed analytical model a useful tool for scientific and engineering purposes, paving the way for future developments in this scope.
KW - Analytical modelling
KW - Soil-structure interaction
KW - Thermomechanical behaviour
KW - Winkler solution
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U2 - 10.1016/j.compgeo.2020.103618
DO - 10.1016/j.compgeo.2020.103618
M3 - Article
AN - SCOPUS:85091344808
VL - 128
JO - Computers and Geotechnics
JF - Computers and Geotechnics
SN - 0266-352X
M1 - 103618
ER -