桂林理工大学学报2017，Vol.37Issue(3)：519-524,6.DOI:10.3969/j.issn.1674-9057.2017.03.020
钻孔灌注桩桩周土扰动的有限元分析
Finite element analysis of soil disturbance of bored piles
摘要
Abstract
With the development of engineering technology,the research of soil disturbance of bored piles has important significance for engineering practice.Based on finite element method,the whole process of bored piles was simulated.The research covers the calculation of the pile hole excavation,slurry-supported and hardening process.(1) The unloading effect of pile soil,weak layers,compaction effect and other factors were studied during the construction process.The control variable method was used to analyze the influence of various factors.(2) Stress release,mud cake,sediment,compaction effect and other construction factors were organized into different cases,and analyzed in numerical simulation.The results show that the mud cake and the stress released most likely lead to the fall of pile bearing.After pouring concrete,the pile soil affected by compaction,the effect of bearing capacity improving of piles is very limited,the influence of the compacting effect in the practical design was negligible.关键词
桩周土扰动/钻孔灌注桩/数值模拟/有限元分析Key words
soil disturbance/bored piles/numerical simulation/finite element analysis分类
建筑与水利引用本文复制引用
石振明,秦浩,张清照,赵思奕..钻孔灌注桩桩周土扰动的有限元分析[J].桂林理工大学学报,2017,37(3):519-524,6.基金项目
国家自然科学基金项目(40972177) （40972177）
