| 顶管施工中矩形沉井工作井允许反力的计算 |
| |
| 引用本文： | 龚慈,魏纲,徐日庆.顶管施工中矩形沉井工作井允许反力的计算[J].岩土力学,2005,26(7):1127-1131. |
| |
| 作者姓名： | 龚慈 魏纲 徐日庆 |
| |
| 作者单位： | 1. 苏州市公路管理处,苏州,2150072;浙江大学,岩土工程研究所,杭州,310027
2. 浙江大学,岩土工程研究所,杭州,310027 |
| |
| 摘 要： | 根据顶管工程中矩形沉井工作井后背墙变形情况,假定后背墙在顶管反力作用下变形为抛物线形,提出采用与位移有关的土压力来计算土体反力。考虑了沉井底部和侧壁的摩阻力,由沉井整体水平向受力平衡计算允许顶力。通过算例与朗肯理论的比较结果表明,提出的方法可用于计算土体的非极限被动土压力,且该方法考虑了顶管反力这一局部荷载对墙后土压力分布的影响。
|
| 关 键 词： | 顶管 矩形沉井 允许反力 位移 |
| 文章编号： | 1000-7598-(2005)07-1127-05 |
| 收稿时间： | 2004-02-25 |
| 修稿时间： | 2004年2月25日 |
Permissible counterforce calculation in rectangular open caisson working well during pipe jacking |
| |
| Gong Ci,WEI Gang,XU Ri-qing.Permissible counterforce calculation in rectangular open caisson working well during pipe jacking[J].Rock and Soil Mechanics,2005,26(7):1127-1131. |
| |
| Authors: | Gong Ci WEI Gang XU Ri-qing |
| |
| Institution: | 1. Administrant Department of Suzhou Highway, Suzhou 215007, China; 2. Institute of Geotechnical Engineering, Zhejiang University, Hangzhou 310027, China |
| |
| Abstract: | Under the counterforce on the rectangular open caisson working well during pipe jacking,the backwall displacement curve was assumed to be parabolic and the relation between the displacement and earth pressure was used to calculate the earth counterforce. Then considering the friction forces on the well sides and well bottom,the permissible jacking force was calculated through the horizontal forces balance of the whole working well. Through an example comparing the new method with Rankine theory,it was shown that the new one can calculate the earth pressure at the un-passive state and considers the effect of the local force on the earth pressure distribution on the backwall. |
| |
| Keywords: | pipe jacking rectangular open caisson permissible counterforce displacement |
| 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 |
|
