APPLICATION RESEARCH OF EPOXY RESIN GROUTS IN STRENGTHENING OF RING FOUNDATION FOR WIND TURBINE TOWER

Chen Junling; Duan Jianping; Feng Youquan; Li Qize

doi:10.19912/j.0254-0096.tynxb.2021-0301

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (10) : 259-265. DOI: 10.19912/j.0254-0096.tynxb.2021-0301

APPLICATION RESEARCH OF EPOXY RESIN GROUTS IN STRENGTHENING OF RING FOUNDATION FOR WIND TURBINE TOWER

Chen Junling¹, Duan Jianping¹, Feng Youquan², Li Qize¹

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Abstract

In order to solve the common cracking and slurry emitting problems in the embedded-ring foundation, the epoxy resin grouting material is proposed to repair the cracks and fill the cavities near the T-flange. The local finite element models at the weakest section of the undamaged foundation and the reinforced foundation by epoxy resin grouting material are developed by the finite element software ABAQUS. The energy dissipation capacity of the models under the reciprocating loading are studied . Numerical results show that the energy dissipation capacity is significantly improved after reinforcement. Then, two overall finite element models are established for the reinforced foundations grouted by epoxy-resin and cement-based materials, respectively. The stress and strain distribution of the foundations are investigated under monotone loading of the standard value and design value of ultimate load. Results show that the distribution of compressive stress on the interface between the T-flange and the foundation concrete for the foundation reinforced by epoxy resin material is more uniform. The stress concentration phenomenon is obviously alleviated and the plastic zone of concrete above the T-flange is obviously reduced.

Key words

wind turbines / foundations / finite element analysis / epoxy resins / strengthening

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Chen Junling, Duan Jianping, Feng Youquan, Li Qize. APPLICATION RESEARCH OF EPOXY RESIN GROUTS IN STRENGTHENING OF RING FOUNDATION FOR WIND TURBINE TOWER[J]. Acta Energiae Solaris Sinica. 2022, 43(10): 259-265 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0301

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