岩土工程学报2025，Vol.47Issue(10)：2056-2065,10.DOI:10.11779/CJGE20240960
深厚软土地基中桶式基础护岸的变位模式研究
Study on displacement mode of bucket foundation revetment in deep soft soil foundation
摘要
Abstract
Bucket foundation structures are commonly employed as breakwaters or revetments in deep soft soil foundations,particularly when used as bucket foundation revetments with complex backfill load conditions.To explore the displacement mode and the influencing mechanism of bucket foundation revetments under different stages of backfill loads,geotechnical centrifuge model tests and finite element simulations are carried out.Subsequently,a method for displacement decomposition calculation of bucket foundation revetments is proposed.The research findings reveal that during the backfilling process inside the bucket,the soil at the bucket bottom is compressed,resulting in a settlement-displacement mode of the bucket.During the land-side backfilling stage,the soil in the upper part of the land side and the sea side of the lower bucket is compressed.This causes the bucket to experience a sliding-displacement mode towards the sea side and an overturning-displacement mode towards the land side.The rotation center is located at the bucket bottom on the sea side and gradually moves towards the bucket in an oblique upward direction during the backfilling process.Reinforcing the soft soil foundation with sand piles around and at the bottom of the bucket can effectively enhance the vertical bearing capacity and reduce settlement.However,it is not effective for reducing lateral loads.The research results of this article can offer a theoretical basis for the study of the displacement mode of bucket foundation revetments.关键词
桶式基础护岸/深厚软土/变位模式/离心模型试验/数值模拟Key words
bucket foundation revetment/deep soft soil/displacement mode/centrifugal model test/numerical analysis分类
建筑与水利引用本文复制引用
潘卓杰,关云飞,李武,韩迅,张红梅..深厚软土地基中桶式基础护岸的变位模式研究[J].岩土工程学报,2025,47(10):2056-2065,10.基金项目
国家自然科学基金项目(52271286) （52271286）
国家重点研发计划项目(2023YFB2604200) （2023YFB2604200）
南京水利科学研究院创新团队基金项目(Y321008)This work was supported by the National Natural Science Foundation of China(52271286),the National Key Research and Development Program of China(2023YFB2604200),The Innovation team fund of Nanjing Hydraulic Research Institute(Y321008). （Y321008）
