HORIZONTAL BEARING CAPACITY OF OFFSHORE WIND TURBINE FOUR-PILE FOUNDATION IN SOFT CLAY SOIL

被引：0
|
作者：
Zhao, Zihao [1 ,2 ,3 ]
Zhang, Zhengfei [1 ]
Du, Wei [4 ]
Wu, Fengyuan [1 ]
机构：
[1] School of Civil Engineering, Shenyang Jianzhu University, Shenyang
[2] Key Laboratory of Ministry of Education for Geomechanics and Embankement Engineering, Hohai University, Nanjing
[3] Jiangsu Research Center for Geotechnical Engineering Technology, Hohai University, Nanjing
[4] State Construction Railway Investment and Engineering Group Co.，Ltd., Central China Branch, Nanchang
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2024年 / 45卷 / 10期
关键词：
clay; four-pile foundation; horizontal bearing capacity; offshore wind power; strain rate; strain softening;
D O I：
10.19912/j.0254-0096.tynxb.2023-0875
中图分类号：
学科分类号：
摘要：
In order to evaluate the influence of strain softening and strain rate effect on the horizontal bearing characteristics of the four-pile foundation，a two-dimensional plane tetrapod pile foundation model by ABAQUS is developed. The relationship between the change of the undrained shear strength su of soft clay with the cumulative plastic shear strain and the maximum shear strain rate is defined in the vumat user subroutine，and the effects of the strain softening parameters δrem，ξ95 and the strain rate parameter μ on the horizontal bearing characteristics of the four-pile foundation are analyzed. The analysis results show that the horizontal bearing capacity of the four-pile foundations decreases with the decrease of the strain softening parameters δrem and ξ95，among which δrem has a more significant effect on the horizontal bearing capacity；The strain rate parameter μ shows a linear positive correlation with the horizontal bearing capacity of the four-pile foundations. Finally，based on the study findings，an unified prediction model of the horizontal bearing capacity of four-pile foundations considering strain softening and strain rate effect is established. © 2024 Science Press. All rights reserved.
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页码：446 / 452
页数：6
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