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Thermo-hydro-mechanical Analysis of an Offshore Monopile Foundation Used for Geothermal Energy Extraction and Storage

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Abstract

A novel concept of incorporating a heat exchanger system in an offshore wind turbine-monopile foundation and its effect on the stress–strain response of pile are investigated in the present work. Thermo-mechanical analysis of the steel monopile with fluid carrying pipes is carried out using finite element method through heat flow and structural analyses. The effect of thermal loading–unloading cycle on the pile, the temperature distribution in the pile and soil, resultant pore pressure development in the soil, the axial stress and strain in the pile and the shear stresses in soil are studied. The thermal stresses and displacement of the piles are checked against the serviceability limits for the offshore structure.

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Authors and Affiliations

  1. Department of Civil Engineering, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi, 110 016, India

    Arundhuti Banerjee, Tanusree Chakraborty & Vasant Matsagar

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  1. Arundhuti Banerjee
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  2. Tanusree Chakraborty
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  3. Vasant Matsagar
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Correspondence to Arundhuti Banerjee.

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Banerjee, A., Chakraborty, T. & Matsagar, V. Thermo-hydro-mechanical Analysis of an Offshore Monopile Foundation Used for Geothermal Energy Extraction and Storage. Geotech Geol Eng 36, 2305–2329 (2018). https://doi.org/10.1007/s10706-018-0464-4

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