SEISEMIC DYNAMIC RESPONSE ANALYSIS OF WIND TURBINE FOUNDATION CONSIDORING VISCOELASTIC BOUNDARY

Hu Hao; Wang Hailong; Jiang Qi; Zhang Jianwei; Wang Huazhen

doi:10.19912/j.0254-0096.tynxb.2024-0684

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (8) : 159-167. DOI: 10.19912/j.0254-0096.tynxb.2024-0684

SEISEMIC DYNAMIC RESPONSE ANALYSIS OF WIND TURBINE FOUNDATION CONSIDORING VISCOELASTIC BOUNDARY

Hu Hao^1,2, Wang Hailong², Jiang Qi², Zhang Jianwei², Wang Huazhen³

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Abstract

In order to explore the dynamic response characteristics of prestressed anchor bolt infrastructure of wind turbines under earthquake action, taking a wind farm in Xinjiang as an example, based on the concrete damaged plasticity model and considering the interaction between foundation and anchor and bolt cage, a three-dimensional numerical simulation model of foundation-base-anchor bolt cage was established, The viscoelastic boundary simulation of foundation boundary spring-damper was realized by secondary development. The dynamic response rules of wind turbine foundation and anchor cage under P wave 45° oblique incidence and SV wave critical angle 30° oblique incidence are clarified. The results show that stress concentration is more prominent in the contact surface between the top of foundation and the grout layer and the joint area between the anchor plate and the bottom of the foundation under seismic load, which is a high-risk area for damage. Compared with P wave, foundation damage is more sensitive to SV wave near fault pulse. Oblique incidence causes the anchor bolt inside the anchor cage to bear greater stress, which has a greater impact on the safety of fan foundation. Therefore, the effect of near-fault pulse SV wave on wind power foundation should be considered in the seismic design of wind power engineering to ensure its safety and reliability in extreme seismic events.

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oblique incidence of seismic waves / viscoelastic artificial boundary / plastic damage model / anchor cage

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Hu Hao, Wang Hailong, Jiang Qi, Zhang Jianwei, Wang Huazhen. SEISEMIC DYNAMIC RESPONSE ANALYSIS OF WIND TURBINE FOUNDATION CONSIDORING VISCOELASTIC BOUNDARY[J]. Acta Energiae Solaris Sinica. 2025, 46(8): 159-167 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0684

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