河南城建学院学报2023，Vol.32Issue(6)：16-21,6.DOI:10.14140/j.cnki.hncjxb.2023.06.003
软土地基预制桩沉桩对桩周土体扰动研究
Disturbance of surrounding soil by pre-cast pile sinking in soft soil foundation
摘要
Abstract
Precast piles,as squeezed soil piles or partially squeezed soil piles,will compress the surrounding soil and disturb the soil structure during the pile sinking process.In order to study the disturbance of the sur-rounding soil caused by the sinking of precast piles in soft soil foundations,the finite element CEL method is used to simulate the entire process of precast pile sinking in soft soil foundations.The displacement law of the soil around the pile during and after the pile sinking is obtained,and the influence of soil elastic modulus and Poisson's ratio on the displacement of the soil around the pile is analyzed.The research results show that during the pile sinking process,the soil near the pile body is subjected to the dragging effect of the pile,and the radial displacement first increases and then decreases.After the pile sinking is completed,the horizontal displacement distribution of the soil around the pile decays logarithmically along the radial direction.With the increase of the elastic modulus,the vertical displacement of the soil around the pile gradually increases,and with the increase of the Poisson's ratio,both the radial displacement and the vertical displacement of the soil increase.关键词
预制桩/CEL方法/挤土效应/土体位移Key words
precast pile/CEL method/soil squeezing effect/soil displacement分类
建筑与水利引用本文复制引用
张军菲,郑昆鹏,边晓亚..软土地基预制桩沉桩对桩周土体扰动研究[J].河南城建学院学报,2023,32(6):16-21,6.基金项目
国家自然科学基金(52078396) （52078396）
