东南大学学报（自然科学版）2023，Vol.53Issue(6)：1034-1043,10.DOI:10.3969/j.issn.1001-0505.2023.06.010
黏土地基中斜向荷载作用下吸力式沉箱的承载性能试验研究
Experiment study on bearing performance of suction caisson under oblique load in clay
摘要
Abstract
In order to study the bearing capacity of suction caisson under oblique load in clay foundation,a se-ries of laboratory model tests were carried out to analyze the ultimate bearing capacity to study the ultimate bearing capacity and load-displacement of suction caisson foundation under oblique loads at different angles and loading positions.The three-dimensional numerical model of suction caisson foundation under oblique load was established by ABAQUS.The effects of length-diameter ratio and loading position on the ultimate bearing capacity of the foundation were explored.The location of the optimal mooring point of caisson foundation was determined,and a method for calculating the ultimate bearing capacity of suction caisson foundation under ob-lique load was proposed based on the limit envelope method.The results show that when the angle between the load direction and the horizontal direction is less than 30°,the burying depth of the loading position has a great influence on the ultimate bearing capacity of the suction caisson foundation.When the angle between the load direction and the horizontal direction is more than 45°,the buried depth of the loading position has little influ-ence on the ultimate bearing capacity of the foundation.In the range of oblique load angle where the bearing capacity of foundation is greatly affected by the loading position,the position of the corresponding optimal mooring point moves upward with the increase of the loading angle.关键词
吸力式沉箱基础/斜向荷载/软黏土/极限承载力Key words
suction caisson foundation/oblique load/soft clay/ultimate bearing capacity分类
建筑与水利引用本文复制引用
戴国亮,黄琚琦,候晓愉..黏土地基中斜向荷载作用下吸力式沉箱的承载性能试验研究[J].东南大学学报（自然科学版）,2023,53(6):1034-1043,10.基金项目
国家自然科学基金资助项目(52078128,52178317). （52078128,52178317）
