| 砂土-风化岩地基中钻孔灌注桩抗拔承载力时效性研究 |
| |
| 引用本文： | 张明义,刘俊伟.砂土-风化岩地基中钻孔灌注桩抗拔承载力时效性研究[J].岩土力学,2008,29(11):3153-3156. |
| |
| 作者姓名： | 张明义 刘俊伟 |
| |
| 作者单位： | 青岛理工大学，青岛 266033 |
| |
| 摘 要： | 砂土及风化砂岩地基中钻孔灌注桩抗拔承载力的时效性研究至今尚无明确的研究成果，此方面的研究具有重要的意义。结合现场抗拔试验数据和灌注桩的施工工艺，对时效性机制进行了分析。结果显示，由于泥浆护壁所形成的过厚泥皮的影响，砂土及风化砂岩地基中钻孔灌注桩抗拔承载力的时效性十分明显，甚至比在黏性土地基中还要强，在前期承载力的增长较快，后期较慢。为了充分利用该类桩的抗拔承载力，建议适当延长试桩前的休止期。
|
| 关 键 词： | 钻孔灌注桩 时间效应 风化岩 休止期 抗拔承载力 侧摩阻力 |
| 收稿时间： | 2007-02-06 |
Time-effect of uplift bearing capacity of drilled grouting pile in ground of sandy soil and weathered sandrock |
| |
| ZHANG Ming-yi,LIU Jun-wei.Time-effect of uplift bearing capacity of drilled grouting pile in ground of sandy soil and weathered sandrock[J].Rock and Soil Mechanics,2008,29(11):3153-3156. |
| |
| Authors: | ZHANG Ming-yi LIU Jun-wei |
| |
| Institution: | Qingdao Technological University, Qingdao 266033, China |
| |
| Abstract: | No explicit result has been achieved on the research of time-effect on uplift bearing capacity of drilled grouting pile in the ground of sandy soil and weathered sandrock. The mechanism of time-effect is analyzed by the data from the test and the construction draft of drilled grouting pile. It is shown that the time-effect of drilled grouting pile on sandy soil is significant under the effect of too thick lateral mud, even strong than cohesive soil. The uplift bearing capacity increases more quickly in the ... |
| |
| Keywords: | drilled grouting pile time-effect weathered rock time of repose uplift bearing capacity lateral resistance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
