TY - JOUR
T1 - A new soil reaction model for large-diameter monopiles in clay
AU - Cao, Guangwei
AU - Ding, Xuanming
AU - Yin, Zhenyu
AU - Zhou, Hang
AU - Zhou, Peng
N1 - Funding Information:
This work is supported by the National Natural Science Foundation of China (Grant Nos. 51878103 and 51778092 ) and Innovation Group Science Foundation of the Natural Science Foundation of Chongqing , China (Grant No. cstc2020jcyj-cxttX0003 ).
Publisher Copyright:
© 2021
PY - 2021/9
Y1 - 2021/9
N2 - Considering the limits of the traditional p-y method and the omission of the non-negligible additional lateral resistance components for large-diameter monopiles, the effects of rotational soil flow and pile tip lateral components on the soil-pile lateral behavior are discussed in detail. A new unified soil reaction model is proposed to obtain a more accurate prediction of the lateral behavior of monopiles supporting offshore wind turbines (OWTs), which consists of the lateral p-y spring, the base moment (Mbase-θ) spring and the base shear (T-u) spring. This model is suitable for cases of slender, semi-rigid and rigid piles, and can be modified to include the effects of different soil flow mechanisms, large diameter and base lateral resistances. From the analysis results, the model proposed in this study provides a better prediction and is more appropriate for the design of OWT foundation. The traditional p-y method underestimates the lateral resistance and stiffness of the soil-pile system, is overly conservative and is not economical for the design of OWT foundations.
AB - Considering the limits of the traditional p-y method and the omission of the non-negligible additional lateral resistance components for large-diameter monopiles, the effects of rotational soil flow and pile tip lateral components on the soil-pile lateral behavior are discussed in detail. A new unified soil reaction model is proposed to obtain a more accurate prediction of the lateral behavior of monopiles supporting offshore wind turbines (OWTs), which consists of the lateral p-y spring, the base moment (Mbase-θ) spring and the base shear (T-u) spring. This model is suitable for cases of slender, semi-rigid and rigid piles, and can be modified to include the effects of different soil flow mechanisms, large diameter and base lateral resistances. From the analysis results, the model proposed in this study provides a better prediction and is more appropriate for the design of OWT foundation. The traditional p-y method underestimates the lateral resistance and stiffness of the soil-pile system, is overly conservative and is not economical for the design of OWT foundations.
KW - Clay
KW - FE analysis
KW - Large-diameter monopile
KW - OWT
KW - P-y method
KW - Soil flow mechanisms
UR - http://www.scopus.com/inward/record.url?scp=85109518032&partnerID=8YFLogxK
U2 - 10.1016/j.compgeo.2021.104311
DO - 10.1016/j.compgeo.2021.104311
M3 - Journal article
AN - SCOPUS:85109518032
SN - 0266-352X
VL - 137
JO - Computers and Geotechnics
JF - Computers and Geotechnics
M1 - 104311
ER -