中南大学学报（自然科学版）Issue(2)：569-576,8.DOI:10.11817/j.issn.1672-7207.2016.02.029
非饱和土基坑刚性挡墙抗倾覆设计与参数分析
Anti-overturning design and parametric analysis for rigid retaining wall of foundation pit in unsaturated soils
摘要
Abstract
Some basic assumptions for the anti-overturning calculation were firstly made for rigid retaining wall of foundation pit in unsaturated soils; then the embedment depth equations to meet different anti-overturn stability coefficients were derived at the matric suction with both uniform distribution and linear distribution; finally, parametric investigations about a new definition anti-overturning buried coefficient were discussed. The results show that the influence of matric suction and its distribution, suction angle and effective shear strength parameters on the anti-overturning buried coefficient is significant; the anti-overturning buried coefficient decreases and even becomes zero with the increase of the matric suction, suction angle and effective shear strength parameters; the anti-overturning design for foundation pit wall with saturated soils ignoring matric suction is too conservative; the influence of matric suction with linear distribution is not as remarkable as that of matric suction with uniform distribution; the distribution of matric suction should be reasonably assumed and some engineering measures are needed to ensure its stability.关键词
非饱和土/基坑刚性挡墙/抗倾覆稳定性/埋置深度Key words
unsaturated soils/rigid retaining wall of foundation pit/anti-overturning stability/embedment depth分类
建筑与水利引用本文复制引用
张常光,陈新栋,朱东辉..非饱和土基坑刚性挡墙抗倾覆设计与参数分析[J].中南大学学报（自然科学版）,2016,(2):569-576,8.基金项目
国家自然科学基金资助项目(41202191)；陕西省自然科学基础研究计划项目(2015JM4146)；中国博士后科学基金资助项目(2014M562358)；陕西省博士后科研资助项目(2015年)(Project (41202191) supported by the National Natural Science Foundation of China （41202191）
Project (2015JM4146) supported by the Natural Science Foundation of Shaanxi Province （2015JM4146）
Project (2014M562358) supported by the China Postdoctoral Science Foundation （2014M562358）
Project (2015) supported by the Postdoctoral Research Project of Shaanxi Province) （2015）
