| 水作用下黄土土层锚杆的预应力损失 |
| |
| 引用本文： | 汪班桥,门玉明,沈星.水作用下黄土土层锚杆的预应力损失[J].水文地质工程地质,2010,37(1):76-79. |
| |
| 作者姓名： | 汪班桥 门玉明 沈星 |
| |
| 作者单位： | 长安大学地质工程与测绘学院;陕西地矿局第六地质队; |
| |
| 摘 要： | 为研究水的作用下,土层锚杆的预应力损失,作者进行了土层锚杆抗拔模型试验。利用所得数据,得到了锚杆预应力损失随时间变化的曲线、预应力锚杆的锚头位移随时间而变化的曲线等。在对所得曲线分析与讨论的基础上,得出黄土土层锚杆的预应力损失主要是由于锚固段土层的蠕变引起的,而且随着土体含水量增加,土体的蠕变性也愈加明显,使得锚杆最终因锚固力不足而被拔出破坏。并提出施工过程中,注意排水、选择优质材料、保证安装质量,同时注重超张拉和二次张拉,是补偿预应力损失,确保工程安全性的重要手段。
|
| 关 键 词： | 土层锚杆 模型试验 预应力损失 土体蠕变 排水 |
Analysis on the pre-stress loss of pre-stressed anchors in loess under water action |
| |
| WANG Ban-qiao,MEN Yu-ming,SHEN Xing.Analysis on the pre-stress loss of pre-stressed anchors in loess under water action[J].Hydrogeology and Engineering Geology,2010,37(1):76-79. |
| |
| Authors: | WANG Ban-qiao MEN Yu-ming SHEN Xing |
| |
| Institution: | 1.School of Geological Engineering and Surveying Engineering,Chang’an University,Xi’an 710054,China;2.Sixth Team under Shanxi Bureau of Geology and Mineral Resources,Xi’an 710061,China |
| |
| Abstract: | The author made an uplift model test on anchors in loess,to study the pre-stress loss of pre-stressed anchors in loess under water action.On the basis of data obtained from the test,the author obtains the pre-stress loss of pre-stressed anchors in loess with time and the curve of pre-stressed anchors bolt head displacement with time.With focus on the analysis and discussion,the author draws a conclusion that the pre-stress loss of pre-stressed anchors in loess was caused mainly by creep of soil,and with the... |
| |
| Keywords: | anchors in soil model test pre-stress loss creep of soil drainage |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《水文地质工程地质》浏览原始摘要信息 |
| 点击此处可从《水文地质工程地质》下载免费的PDF全文 |
|
