中南大学学报（自然科学版）2016，Vol.47Issue(11)：3884-3889,6.DOI:10.11817/j.issn.1672-7207.2016.11.035
负摩阻力作用下桩基中性点位置、下拽力及下拽位移与时间的关系
Relationship of neutral point position, dragload or downdrag of pile versus time under negative skin friction
摘要
Abstract
The develop process of negative skin friction of pile was briefly introduced. The relationship curves models for neutral point position versus time, dragload versus time, and downdrag versus time were developed. The curve model results were comparatively analyzed with field test results;and the physical meanings of parameters were discussed and analyzed. The results show that the results obtained by curves models fit well with those of field test results, which verifies the accuracy and reliability of curves models developed in this paper. The results also provide a reference for further study of the characteristics of negative skin friction and its design and calculation.关键词
桩基/负摩阻力/中性点位置/下拽力/下拽位移/时间效应Key words
pile foundation/negative skin friction/neutral point position/dragload/downdrag/time effect分类
建筑与水利引用本文复制引用
孔纲强,周杨,彭怀风..负摩阻力作用下桩基中性点位置、下拽力及下拽位移与时间的关系[J].中南大学学报（自然科学版）,2016,47(11):3884-3889,6.基金项目
国家自然科学基金资助项目(51278170，51478165)(Projects(51278170,51478165) supported by the National Natural Science Foundation of China) （51278170，51478165）
