电力勘测设计Issue(1)：11-16,19,7.
湿陷性黄土地区桩基负摩阻力试验研究
Study on Negative Friction Force of Pile Foundations in Collapsible Loess Area
摘要
Abstract
Negative skin friction (NSF) numerical simulation of pile foundation is carried out combined with pile foundation test instance in collapsible loess area. Some significant factors,such as the length of pile,the load on the top,overload,the soil elastic modulus and consolidation time of pile are analyzed. The results indicate: The shorter of the pile, the faster of the settlement caused by the load on the top of pile increase. The location of neutral point move up evidently, downdrag caused by NSF and decreasing trend becomes gently while working load acting upon the pile increase. Maximal NSF absolute value increase, the location of neutral point move down, maximal axis strength increase when the overload and the soil elastic modulus increase during consolidation time lapsed.关键词
湿陷性黄土/桩基/负摩阻力/中性点/数值模拟Key words
collapsible loess area/pile foundation/negative skin friction/neutral point/numerical Simulation分类
建筑与水利引用本文复制引用
陈新泽,胡昕,张希宏..湿陷性黄土地区桩基负摩阻力试验研究[J].电力勘测设计,2015,(1):11-16,19,7.基金项目
西北电力设计院技术创新项目(XB1-TM12-2010) （XB1-TM12-2010）
