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Centrifuge test on instrumented FBGs monopile foundation in sand

Abstract : Monopile foundation is a typical foundation for offshore wind farms. An important issue related to the stability of monopiles is the lateral service loads resulted mainly from winds and currant. In this study, the centrifuge test was conducted at 100×g to study the response of this monopile under lateral loading. An alumin-ium tube with diameter D = 50 mm was instrumented with diametrically-opposed and symmetrically-distributed Fibre Bragg Grating sensors (FBGs), allowing to measure the moment profile of the pile below the ground level. Four LASER displacement sensors were used to detect the displacement of the pile above the ground. The model pile was jacked 5D into the saturated sand at 1×g. The lateral loading was applied at 5D above the ground level. The general and local behaviour is determined from the different experimental measurements.
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Submitted on : Monday, April 19, 2021 - 12:26:24 PM
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Matthieu Blanc, Zhong-Sen Li, Luc Thorel. Centrifuge test on instrumented FBGs monopile foundation in sand. ECSMGE 2019, 17th European Conference on Soil Mechanics and Geotechnical Engineering, Sep 2019, Reykjavik, Iceland. 8 p, ⟨10.32075/17ECSMGE-2019-0263⟩. ⟨hal-02430597v2⟩



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