岩土工程学报2024，Vol.46Issue(8)：1573-1581,9.DOI:10.11779/CJGE20220703
基于极限分析下限法的筒型基础地基承载特性研究
Bearing characteristics of bucket foundation based on lower bound method of limit analysis
摘要
Abstract
With the advantages of low cost,short construction period and relatively small foundation disturbance,the bucket foundation has become one of the important foundation forms of offshore wind power in China.Because of its complex foundation structure,the classical method for foundations can not accurately evaluate the vertical bearing capacity of the bucket foundation.In this study,the lower bound method of finite element limit analysis is used to transform the bucket-soil interaction into an inequality constraint condition between the bucket-soil friction and the undrained shear strength of the soil,and a lower bound solution program for the vertical bearing capacity of the bucket foundation is established.On this basis,the effects of the non-uniformity of the soil strength,length-diameter ratio of the bucket foundation and friction between the outer wall of the bucket and the soil on the vertical bearing capacity of the bucket foundation are analyzed,and a formula for calculating the vertical bearing capacity of the bucket foundation considering the above factors is proposed.关键词
有限元极限分析下限法/筒型基础/地基竖向承载力Key words
lower bound finite element method/bucket foundation/vertical bearing capacity of foundation分类
建筑与水利引用本文复制引用
刘润,杨灿,陈广思..基于极限分析下限法的筒型基础地基承载特性研究[J].岩土工程学报,2024,46(8):1573-1581,9.基金项目
国家杰出青年科学基金项目(51825904) （51825904）
