TY - JOUR
T1 - Response of Hybrid Monopile-Friction Wheel Foundation under Earthquake Loading Using Centrifuge Modelling
AU - Wang, Xuefei
AU - Zeng, Xiangwu
AU - Li, Xinyao
N1 - Publisher Copyright:
© 2018 American Society of Civil Engineers.
PY - 2018
Y1 - 2018
N2 - Offshore wind farms that are constructed in seismic active areas have high requirements for their foundation designs. The earthquake induced soil liquefaction may cause severe damage to the whole structure and consequently influence the operation of wind turbines. Monopile foundation has been widely used currently, and based on this type of foundation, an innovative foundation is proposed. The concept of hybrid monopile-friction wheel foundation is a combination of a monopile and a gravity base, which is regarded as an improved and reinforced design of the original monopile. A series of centrifuge tests was performed to investigate the seismic response of the hybrid foundation system in sandy soil. Two types of hybrid monopile-friction wheel foundations, which contain solid wheel or gravel wheel, were tested, and the results were compared with the original monopile foundation. Accelerations, pore water pressure ratios, and settlements were recorded to illustrate the results. Each tested model exhibited distinct behaviors during the earthquake. It was found that the friction wheel further reinforced the foundation soil, and the liquefaction tendency is lower. The results validate this new concept of offshore wind hybrid foundation systems.
AB - Offshore wind farms that are constructed in seismic active areas have high requirements for their foundation designs. The earthquake induced soil liquefaction may cause severe damage to the whole structure and consequently influence the operation of wind turbines. Monopile foundation has been widely used currently, and based on this type of foundation, an innovative foundation is proposed. The concept of hybrid monopile-friction wheel foundation is a combination of a monopile and a gravity base, which is regarded as an improved and reinforced design of the original monopile. A series of centrifuge tests was performed to investigate the seismic response of the hybrid foundation system in sandy soil. Two types of hybrid monopile-friction wheel foundations, which contain solid wheel or gravel wheel, were tested, and the results were compared with the original monopile foundation. Accelerations, pore water pressure ratios, and settlements were recorded to illustrate the results. Each tested model exhibited distinct behaviors during the earthquake. It was found that the friction wheel further reinforced the foundation soil, and the liquefaction tendency is lower. The results validate this new concept of offshore wind hybrid foundation systems.
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U2 - 10.1061/9780784481479.046
DO - 10.1061/9780784481479.046
M3 - Conference article
AN - SCOPUS:85048886375
SN - 0895-0563
VL - 2018-June
SP - 445
EP - 453
JO - Geotechnical Special Publication
JF - Geotechnical Special Publication
IS - GSP 292
T2 - 5th Geotechnical Earthquake Engineering and Soil Dynamics Conference: Numerical Modeling and Soil Structure Interaction, GEESDV 2018
Y2 - 10 June 2018 through 13 June 2018
ER -