@inproceedings{a9b2aa951a9647b6ae57d89e119c77a4,
title = "An extended model of impedance functions of monopile-supported offshore wind turbines incorporating soil-structure interaction effect",
abstract = "Sensitivity of the Offshore Wind Turbine (OWT) natural frequency on the monopile length lower and beyond the active length was provided for the sake of safe design purpose. Four types of monopiles having aspect ratios (Depth to the diameter of the foundation) L p /D of 4, 5, 6 and 8 were studied numerically. The analytical model proposed here for constructing the OWT natural frequency considering soil-pile interaction can be conveniently constructed by monopile head springs characterized by lateral stiffness K L, rotational stiffness K R, cross-coupling stiffness K LR and parabolic soil stiffness variation with depth. However, recent research conclusively showed that if the monopile length lies below the certain depth so called active length, it might cause shifting of the natural frequency to the forcing excitation frequencies range. ",
keywords = "Nutural frequency, Offshore Wind Turbine (OWT), Monopile head springs, Stiffness, Nutural frequency, Offshore Wind Turbine (OWT), Monopile head springs, Stiffness",
author = "Amin Barari and Ibsen, {Lars Bo}",
year = "2019",
month = apr,
doi = "10.1201/9780429058882-7",
language = "English",
isbn = "978-0-367-17983-0 ",
series = "Proceedings in Earth and geosciences (Print)",
publisher = "CRC Press/Balkema",
pages = "30--35",
editor = "Rashid Mangushev and Askar Zhussupbekov and Yoshinori Iwasaki and Igor Sakharov",
booktitle = "Geotechnics Fundamentals and Applications in Construction",
note = "International Conference on Geotechnics Fundamentals and Applications in Construction : New Materials, Structures, Technologies and Calculations, GFAC 2019 ; Conference date: 06-02-2019 Through 08-02-2019",
url = "https://www.issmge.org/events/international-conference-on-geotechnics-fundamentals-and-applications-in-construction-new-materials-structures-technologies-and-calculations-gfac-2019",
}