Abstract In the present study, a novel concept of incorporating a heat exchanger system in an existing offshore wind turbine-monopile foundation and its effect on the stress-strain response of the structure is investigated. Thermo-mechanical analysis of the steel monopile with fluid carrying pipes was carried out using finite element method (FEM) considering heat transfer and structural analyses. The effect of offshore loading is taken into account using random wind and wave loading simulated using the Kaimal and the Pierson Moskowitz spectra, respectively. The combined effect of thermal as well as offshore loading on the monopile, resultant pore pressure development in soil due to the loads, the axial and radial stresses and strains in the structure and the shear stresses in soil were studied in detail. The strains and displacement of the structure are checked against the serviceability limits for the offshore wind turbine structure and it has been observed that the combination of offshore as well as thermal load on the monopile foundation along with the duration of the load, affects the stresses and strains in the structure significantly.

中文翻译：

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海上单桩基础作为能源提取换热器的动力分析

摘要 在本研究中，研究了在现有海上风力涡轮机-单桩基础中结合换热器系统的新概念及其对结构应力应变响应的影响。考虑到传热和结构分析，使用有限元方法 (FEM) 对带有流体输送管的钢单桩进行了热力学分析。使用分别使用 Kaimal 和 Pierson Moskowitz 谱模拟的随机风载荷和波浪载荷来考虑海上载荷的影响。详细研究了热载荷和海上载荷对单桩的综合影响、由于载荷引起的土壤孔隙压力、结构中的轴向和径向应力和应变以及土壤中的剪切应力。