期刊文献+

盾构法隧道施工引起的土体变形预测 预览 被引量:55

PREDICTION OF GROUND DEFORMATION INDUCED BY SHIELD TUNNELING CONSTRUCTION
在线阅读 下载PDF
分享 导出
摘要 理论分析表明,不同土质条件下盾构法隧道施工引起的土体移动模型有区别。基于盾构法隧道统一土体移动模型,假定土体不排水,采用N.Loganathan等提出的研究方法,通过对Verriujt计算公式进行修正,推导得到盾构施工过程中由于土体损失引起的土体变形二维解,该方法适用于施工阶段。算例分析表明:所给出方法的计算结果与实测值较吻合,适用于从流塑~坚硬状态的所有黏性土。Loganathan公式只适用于流塑状态的黏性土,当土质较硬时,计算所得到的土体沉降要比实测值小;盾构施工引起的隧道上方土体沉降从地面向下呈非线性增大,在隧道顶部达到最大,离隧道越近,增长越快;隧道周围土体产生向隧道侧的水平位移,从地面向下逐渐增大,在略高于隧道轴线附近达到最大值,再逐渐减小直到0。离隧道越近,土体水平位移越大。 Theoretical analysis shows that ground movement patterns induced by shield tunneling construction for different kinds of soils will be different. Assuming soil is undrained, the Verriujt's formula is modified by N. Loganathan's method. Based on uniform ground movement pattern of shield tunnel, two-dimensional analytical solution of soil deformation induced by shield tunneling construction is deduced; and the method is applied to different construction phases. As shown in analytical calculation, the predicted ground displacements are in good agreement with the measured values; and this method is applicable for the clayey soil from flow-plastic state to stiffness state. While Loganathan's formula is only fitted for flow-plastic state clay, the predicted ground settlements for stiffness state clay are smaller than the measured values. The settlement of soil above tunnel by shield construction increases nonlinearly from ground surface down to deep; and it reaches the maximum value in the roof of tunnel; the closer the soil to tunnel is, the faster the settlement is. The horizontal displacement of the tunnel surrounding soil increases from ground surface down to deep; but it reaches the maximum value over the tunnel axial line and then gradually reduces to zero. The nearer the soil to tunnel is, the larger the horizontal displacement of soil is.
作者 魏纲 WEI Gang (Department of Civil Engineering, Zhejiang University City College, Hangzhou, Zhejiang 310015, China)
出处 《岩石力学与工程学报》 EI CAS CSCD 北大核心 2009年第2期 418-424,共7页 Chinese Journal of Rock Mechanics and Engineering
基金 浙江省教育厅科研资助项目(20070180)
关键词 隧道工程 盾构隧道 土体移动模型 土体损失 地面沉降 tunnelling engineering shield tunnel ground movement pattern ground loss surface settlement
作者简介 魏纲(1977-),男,博士,2000年毕业于宁波大学建筑工程专业,现任讲师,主要从事软土地基处理与地下隧道施工对周边环境影响方面的教学与研究工作。E-mail:weig@zucc.edu.cn
  • 相关文献

参考文献15

  • 1魏纲,魏新江,龚慈,丁智.软土中盾构法隧道引起的土体移动计算研究[J].岩土力学,2006,27(6):995-999. 被引量:26
  • 2PECK R B. Deep excavations and tunneling in soft ground[C]// Proceedings of the 7th International Conference on Soil Mechanics and Foundation Engineering. Mexico City: [s, n. ], 1969:225-290. 被引量:1
  • 3SAGASETA C. Analysis of undrained soil deformation due to ground loss[J].Geotechnique, 1987, 37(3): 301-320. 被引量:1
  • 4VERRUIJT A, BOOKER J R. Surface settlements due to deformation of a tunnel in an elastic half plane[J]. Geotechnique, 1996, 46(4): 753 - 756. 被引量:1
  • 5BOBET A. Analytical solutions for shallow turmels in saturated ground[J]. Journal of Engineering Mechanics, 2001, 127Q2): 1 258 - 1 266. 被引量:1
  • 6LOGANATHAN N, POULOS H G. Analytical prediction for tunneling-induced ground movement in clays[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1998, 124(9): 846 - 856. 被引量:1
  • 7PARK K H. Elastic solution for ttmneling-induced ground movements in clays[J].International Journal of Geomechanics, 2004, 4(4): 310- 318. 被引量:1
  • 8魏纲.盾构法隧道统一土体移动模型的建立[J].岩土工程学报,2007,29(4):554-559. 被引量:28
  • 9魏纲.盾构施工中土体损失引起的地面沉降预测[J].岩土力学,2007,28(11):2375-2379. 被引量:39
  • 10CHENG C Y, DASARI G R, CHOW Y K, et al. Finite element analysis of tunnel-soil-pile interaction using displacement controlled model[J]. Tunnelling and Underground Space Technology, 2007, 22(4): 450 - 466. 被引量:1

二级参考文献63

共引文献163

同被引文献477

引证文献55

二级引证文献305

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈