南京航空航天大学学报（英文版）2008，Vol.25Issue(4)：311-317,7.
湿作业成孔钻孔灌注桩时间效应试验
EXPERIMENTAL STUDY ON TIME EFFECT OF WET DRILLING PILE
程晔 1龚维明 2戴国亮 1季杰1
作者信息
- 1. 东南大学土木工程学院,南京,210096,中国
- 2. 南京航空航天大学航空宇航学院,南京,210016,中国
- 折叠
摘要
Abstract
Time effect of wet drilling pile is investigated through the static load experiment on pile No.22 of Guanhe Bridge. Post-grouting under pile tip is adopted in the project. To study the bearing performance of the pile, the self-balanced method is used and two load cells are assembled in the pile body. The experiments are carried out before and after post-grouting. The upper part of the pile is not influenced by post-grouting under the pile tip. Experimental results of the upper part of the pile show that the bearing capacity and the rigidity of wet drilling pile increase with time passing on. Analysis results show the time effect of wet drilling pile is influenced by many factors, such as alteration of stress field around pile, characteristics of soil around pile, variety of mud cake, and property of residue under pile tip.关键词
承载力/钻孔灌注桩/时间效应/自平衡Key words
bearing capacity/drilling pile/time effect/self-balanced分类
建筑与水利引用本文复制引用
程晔,龚维明,戴国亮,季杰..湿作业成孔钻孔灌注桩时间效应试验[J].南京航空航天大学学报（英文版）,2008,25(4):311-317,7.
