| 顶管施工中顶力和平均摩阻力与顶程关系分析 |
| |
| 引用本文： | 向安田,朱合华,丁文其.顶管施工中顶力和平均摩阻力与顶程关系分析[J].岩土力学,2008,29(4):1005-1009. |
| |
| 作者姓名： | 向安田 朱合华 丁文其 |
| |
| 作者单位： | 同济大学地下建筑工程系，上海 200092 |
| |
| 摘 要： | 顶力是顶管施工中必须确定的一个重要参数，平均摩阻力则是衡量顶进效果的一个重要指标。为研究二者与顶程的关系，通过现场实测某长距离大口径急曲线顶管两节管段顶进过程中的顶力以及由顶力计算的平均摩阻力的变化情况，对顶力和平均摩阻力随顶程变化规律及其影响因素作了深入分析。由于影响因素复杂多变，顶力全程呈较为剧烈震荡上升的趋势，平均摩阻力则在经过初期的高位震荡后，由于施工趋于稳定，如泥浆套已成型、轴线控制已相对稳定，以及顶程对影响因素的稀释作用，而迅速下降并变得比较平稳。只要施工控制措施得力，长距离大口径急曲线顶管的平均摩阻力完全可以控制在较低的水平上。最后，本文就施工措施提出了一些建议。
|
| 关 键 词： | 顶力 平均摩阻力 顶程 影响因素 震荡 稀释 |
| 文章编号： | 1000-7598-(2008)04-1005-05 |
| 收稿时间： | 2006-04-03 |
| 修稿时间： | 2006年4月3日 |
Relationship of jacking force and average friction with jacking path in pipe-jacking construction |
| |
| XIANG An-tian,ZHU He-hua,DING Wen-qi.Relationship of jacking force and average friction with jacking path in pipe-jacking construction[J].Rock and Soil Mechanics,2008,29(4):1005-1009. |
| |
| Authors: | XIANG An-tian ZHU He-hua DING Wen-qi |
| |
| Institution: | Department of Geotechnical Engineering , Tongji University, Shanghai 200092, China |
| |
| Abstract: | Jacking force and average friction both are important parameters in pipe-jacking construction, the former can affect construction scheme greatly; the latter can embody whether the construction crafts are good. In the construction of a long distance and large diameter pipe-jacking tunnel with small curvature in Shanghai, jacking forces along jacking path are measured for two pipes. Based on the on-site observation, relationship of jacking force and average friction with jacking path and its influence factors are analyzed. Due to complexity of the influence factors, jacking force increases with violent vibration along jacking path，average friction also vibrates initially at high level. As a result of construction stabilization such as formation of slurry-cover, stabilization of axis-control, and dilution of influence factor along jacking path, average friction decreases quickly and tends to stabilize after initial stage. If construction measures are sound, average friction for long distance pipe-jacking with small curvature can be controlled at a low level. At last, some suggestions about construction are put forward. |
| |
| Keywords: | jacking force average friction jacking path influential factor vibration dilution |
| 本文献已被 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 |
|
