海南大学学报（自然科学版）2025，Vol.43Issue(4)：416-423,8.DOI:10.15886/j.cnki.hndk.2024110803
砂土地基中吸力桶基础抗拔承载特性试验研究
Experimental study on the uplift bearing capacity characteristics of suction caisson in sand
摘要
Abstract
The suction caisson serves as an important anchoring foundation for floating platforms,widely used in deep-sea oil/gas platforms and offshore wind turbines due to its convenient construction,cost-effectiveness,and structural reliability.This study,based on the scaled model tests conducted in saturated sand under displacement control,investigates the uplift bearing capacity,ultimate failure modes,and pore pressure evolution pattern of suction caissons under varying loading rates and aspect ratios.The results indicate that:1)Under fully drained conditions,the main uplift resistance of the suction caisson is derived from structural self-weight and sidewall friction,with negligible contributions from internal negative excess pore pressure and minimal loading rate effects on the bearing capacity;2)Under partially drained conditions,the uplift bearing capacity increases correspondingly with the growth of negative pressure,demonstrating significant influence of negative pressure on load-bearing performance;3)Within a certain range,as the aspect ratio increases,the dissipation rate of pore pressure decreases while the sidewall friction resistance enhances,leading to substantial improvement in ultimate uplift capacity.关键词
吸力桶基础/抗拔承载力/承载特性/模型试验Key words
suction caisson/uplift bearing capacity/bearing characteristics/model tests分类
建筑与水利引用本文复制引用
谢金城,周宇轩,任莎莎,熊树森,朱斌,张友良,张海滨..砂土地基中吸力桶基础抗拔承载特性试验研究[J].海南大学学报（自然科学版）,2025,43(4):416-423,8.基金项目
海南省院士创新平台科研项目(YSPTZX202320) （YSPTZX202320）
