Centrifuge model tests and numerical simulations of horizontal bearing behaviors of monopiles with wings

LI Bo; LI Wei

doi:10.11779/CJGE2022S2046

Volume 44 Issue S2

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Geotechnical Engineering > 2022 > 44(S2): 211-214. > DOI: 10.11779/CJGE2022S2046

LI Bo, LI Wei. Centrifuge model tests and numerical simulations of horizontal bearing behaviors of monopiles with wings[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(S2): 211-214. DOI: 10.11779/CJGE2022S2046

Citation:

PDF (1069 KB)

Centrifuge model tests and numerical simulations of horizontal bearing behaviors of monopiles with wings

LI Bo^1,,
LI Wei²

1.
Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Changjiang River Scientific Research Institute, Wuhan 430010, China
2.
HYDRO CHINA Huadong Engineering Corporation, Hangzhou 310014, China

More Information

Received Date: December 05, 2022
Available Online: March 26, 2023

Graphical Abstract

Abstract

Abstract

The horizontal bearing behaviors of a large-diameter monopile and that with wings for offslore wind turbines are studied through the centrifuge tests and three-dimensional finite element methods. Three centrifugal model tests are conducted on the purpose of exploring the variation curves of the horizontal bearing capacity of the monopiles with different wings during the stepped horizontal loading process, and the distribution laws of their bending moment. Based on the fundamental parameters of the centrifugal model tests, three-dimensional finite element models are established to carry out the comparison with the results of the centrifuge tests. The layered foundation is adopted to factually simulate the strength features of foundation in the centrifuge field. Comparison of the calculated results with the measured results of the centrifugal model tests identifies the rationality of the established model. Furthermore, the effects of the foundation properties on the horizontal bearing capacity are studied through the numerical method. The results show that the horizontal bearing behaviors of the large-diameter monopile with wings are much more than those without wings because of the full use of the soil resistance of the shallow layer of the foundation. Increasing the length of the wing plate can effectively improve its horizontal bearing capacity.
- pile foundation,
- wind turbine foundation,
- horizontal bearing capacity,
- centrifugal model test,
- 3D finite element

FullText(HTML)

References (6)

References

[1]	WANG H, FU D W, YAN T T, et al. Bearing characteristics of multi-wing pile foundations under lateral loads in Dapeng Bay silty clay[J]. Journal of Marine Science and Engineering, 2022, 10(10): 1391. doi: 10.3390/jmse10101391
[2]	李炜, 赵生校, 周永, 等. 海上风机基础大直径加翼单桩常重力模型试验研究[J]. 土木工程学报, 2013, 46(4): 124–132. https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC201304019.htm LI Wei, ZHAO Sheng-xiao, ZHOU Yong, et al. 1g-model test of large diameter monopile with wings for offshore wind turbine[J]. China Civil Engineering Journal, 2013, 46(4): 124–132. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC201304019.htm
[3]	何建新, 李致, 孟星宇, 等. 对称布置翼板加翼桩的水平承载性能分析[J]. 水利水运工程学报, 2020(5): 109–115. https://www.cnki.com.cn/Article/CJFDTOTAL-SLSY202005015.htm HE Jian-xin, LI Zhi, MENG Xing-yu, et al. Analysis of lateral bearing capacity of wing-monopile with symmetrical wing plates[J]. Hydro-Science and Engineering, 2020(5): 109–115. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SLSY202005015.htm
[4]	胡烨之, 鲁子爱, 张雅琪, 等. 加载方向对加翼桩极限横向承载力的影响[J]. 水电能源科学, 2019, 37(1): 106–110, 90. https://www.cnki.com.cn/Article/CJFDTOTAL-SDNY201901028.htm HU Ye-zhi, LU Zi-ai, ZHANG Ya-qi, et al. Effects of load direction on ultimate bearing lateral capacity of winged pile[J]. Water Resources and Power, 2019, 37(1): 106–110, 90. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SDNY201901028.htm
[5]	SHARMA J. Centrifugal and numerical modelling of reinforced embankments on soft clay installed with wick drains[J]. Geotextiles and Geomembranes, 2001, 19(1): 23–44. doi: 10.1016/S0266-1144(00)00009-1
[6]	荣冰, 张嘎, 张建民. 水平荷载作用下风电机桩基础的离心模型试验研究[J]. 岩土力学, 2012, 33(2): 428–432. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201202019.htm RONG Bing, ZHANG Ga, ZHANG Jian-min. Centrifuge model tests for pile foundation of wind power generation under horizontal loads[J]. Rock and Soil Mechanics, 2012, 33(2): 428–432. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201202019.htm