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Cyclic Thermal Effects on Soil-Structure Interaction in Case of Energy Piles

Conference paper
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Part of the Sustainable Civil Infrastructures book series (SUCI)

Abstract

This paper presents the effect of thermal and mechanical load on stress-strain response of energy piles in Ottawa Sand. The study is focussed on the thermally induced displacement of energy piles due to cyclic thermal loading. The pile response to combined thermal and mechanical loading is analysed through axisymmetric nonlinear finite element analysis procedure using Abaqus software for a single energy pile in Ottawa sand. The stress-strain response of pile is assumed as linear elastic and the stress-strain response of sand is simulated using constitutive model CASM. The CASM model is incorporated in finite element software Abaqus through user defined material subroutine. The pile base displacement-time history and shear stress in soil at pile-soil interface are analysed. The analyses are performed for 50 thermal cycles considering different pile base conditions (i) floating base pile and (ii) fixed base pile. A parametric study is carried out by varying (i) stiffness of surrounding soil and (ii) temperature change applied on the pile. It is concluded from the results that the pile response to thermomechanical loading can be attributed to stiffness of soil and the magnitude of thermal load applied on the pile. The mechanical loading of the piles causes downward displacement and thermal load causes upward displacement of pile head. Consequently, the shear stress response at pile-soil interface is altered. The negative shear stress generates in the fixed base pile in loose sand. The resultant pile displacement is controlled by the magnitude of applied thermal load. Elastic behaviour of piles is observed for the piles subjected to cyclic thermomechanical loading.

Keywords

Energy Piles Pile-soil Interface Cyclic Thermo-mechanical Loading Pile Head Pile Base 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Abaqus/Standard User’s Manual, Version 6.11: Dassault Systèmes Simulia Corporation, Providence, Rhode Island, USA (2011)Google Scholar
  2. Bourne-Webb, P.J., Amatya, B., Soga, K., Amis, T., Davidson, C., Payne, P.: Energy pile test at Lambeth College, London: geotechnical and thermodynamic aspects of pile response to heat cycles. Géotechnique 59(3), 237–248 (2009).  https://doi.org/10.1680/geot.2009.59.3.237CrossRefGoogle Scholar
  3. Brandl, H.: Energy foundations and other thermo-active ground structures. Géotechnique 56(2), 81–122 (2006)CrossRefGoogle Scholar
  4. Di Donna, A., Laloui, L.: Advancements in geotechnical design of energy piles. In: International Workshop on Geomechanics and Energy - The Ground as Energy Source and Storage, Lausanne, Switzerland, 26–28 November 2013 (2013).  https://doi.org/10.3997/2214-4609.20131946
  5. Green, A.E., Naghdi, P.M.: On undamped heat waves in an elastic solid. J. Therm. Stresses 15, 253–264 (1992)CrossRefGoogle Scholar
  6. Goode, J.C. III, Zhang, M., McCartney, J.S.: Centrifuge modeling of energy foundations in sand. In: Gaudin, C., White, D. (eds.) Physical Modeling in Geotechnics: Proceedings of the 8th International Conference on Physical Modelling in Geotechnics, Perth, Australia, 14–17 January 2014, pp. 729–736. Taylor and Francis, London (2014)Google Scholar
  7. Laloui, L., Nuth, M., Vulliet, L.: Experimental and numerical investigations of the behavior of a heat exchanger pile. Int. J. Numer. Anal. Meth. Geomech. 30, 763–781 (2006)CrossRefGoogle Scholar
  8. Loukidis, D.: Advanced constitutive modeling of sands and applications to foundation engineering. Ph.D. thesis, Purdue University (2006)Google Scholar
  9. Murphy, K.D., McCartney, J.S., Henry, K.S.: Thermo-mechanical characterization of a full scale energy foundation. Soil Behav. Fundam. Innov. Geotech. Eng. 617–628 (2014).  https://doi.org/10.1061/9780784413265.050
  10. Murthy, T.G., Loukidis, D., Carraro, J.A.H., Prezzi, M., Salgado, R.: Undrained monotonic response of clean and silty sands. Géotechnique 57(3), 273–288 (2006)CrossRefGoogle Scholar
  11. Peron, H., Knellwolf, C., Laloui, L.: A method for geotechnical design of heat exchanger piles. Geo-Frontiers, 470–479 (2011)Google Scholar
  12. Saggu, R., Chakraborty, T.: Thermal analysis of energy piles in sand. Geomech. Geoeng. Int. J. 10(1), 10–29 (2015a).  https://doi.org/10.1080/17486025.2014.923586CrossRefGoogle Scholar
  13. Saggu, R., Chakraborty, T.: Cyclic thermo-mechanical analysis of energy piles in sand. Geotech. Geol. Eng. 33(2), 321–342 (2015b).  https://doi.org/10.1007/s10706-014-9798-8CrossRefGoogle Scholar
  14. Saggu, R., Chakraborty, T.: Pile-soil interaction under thermomechanical loading conditions imposed by geothermal energy piles in sand. In: Proceedings of Geochina 2016, Geotechnical Special Issue 259, 41–48 (2016a)Google Scholar
  15. Saggu, R., Chakraborty, T.: Thermo-mechanical response of geothermal energy pile group in sand. Int. J. Geomech. 16(4) (2016b).  https://doi.org/10.1061/(asce)gm.1943-5622.0000567CrossRefGoogle Scholar
  16. Saggu, R., Chakraborty, T.: Thermo-mechanical response of geothermal energy piles in sand and parametric study. Int. J. Geomech. 17(9) (2017).  https://doi.org/10.1061/(asce)gm.1943-5622.0000962CrossRefGoogle Scholar
  17. Stewart, M.A., McCartney, J.S.: Centrifuge modeling of soil-structure interaction in energy foundations. J. Geotech. Geoenviron. Eng. 140(4), 04013044 (2014).  https://doi.org/10.1061/(ASCE)GT.1943-5606.0001061CrossRefGoogle Scholar
  18. Tarnawski, V.R., Momose, T., Leong, W.H., Bovesecchi, G., Coppa, P.: Thermal conductivity of standard sands. Part I. Dry state conditions. Int. J. Thermophys. 30(3), 949–968 (2009)CrossRefGoogle Scholar
  19. Yu, H.S.: Plasticity and Geotechnics. Springer Publishers, New York (2006)Google Scholar
  20. Wang, B., Bouazza, A., Singh, R.M., Barry, D.M., Haberfield, C., Chapman, G., Baycan, S.: Field investigation of geothermal energy pile: initial observations. In: Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris, pp. 3415–3418 (2013)Google Scholar
  21. Wang, W., Regueiro, R.A., McCartney, J.S.: Coupled axisymmetric thermo - poro-mechanical finite element analysis of an energy foundation centrifuge experiment in partially saturated silt. In: Abu-Farsakh, M., Hoyos, L. (eds.) Proceedings of GeoCongress 2014 (GSP 234), ASCE, pp. 2675–2684 (2014)Google Scholar

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Civil EngineeringGalgotias College of Engineering and TechnologyGreater NoidaIndia

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