Prediction of the longitudinal uplift of an underwater shield tunnel during canal excavation

被引：0
作者：
Wang, Daoyuan [1 ,3 ,4 ]
Wang, Xichao [2 ,4 ]
Yuan, Jinxiu [3 ]
Zhu, Zhengguo [4 ]
机构：
[1] School of Civil Engineering, Southwest Jiaotong University, Chengdu
[2] Hebei University of Science and Technology, Shijiazhuang
[3] Department of Civil Engineering, Hebei Jiaotong Vocational & Technical College, Shijiazhuang
[4] School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang
来源：
Modern Tunnelling Technology | 2015年 / 52卷 / 02期
关键词：
Excavation of canal; Longitudinal uplift; Prediction; Underwater shield tunnel;
D O I：
10.13807/j.cnki.mtt.2015.02.016
中图分类号：
学科分类号：
摘要：
A prediction model for the longitudinal uplift of an underwater shield tunnel during the excavation of a canal was set up and solved based on the bending differential equation of the elastic foundation beam, compatibility equations of deformation, rotation angle, shearing force and bending moment, and its boundary conditions. The results show that the analytical solutions obtained by the prediction model are consistent with the numerical solutions within a maximum error of 2.7%, and can therefore be used to predict uplift in similar projects. The longitudinal uplift of the shield tunnel decreases nonlinearly with the increase of the ground reaction coefficient, while it is not affected by the reaction coefficient when the ground reaction coefficient reaches 10000 kN·m-3. In practical engineering, it is possible to keep the ground reaction coefficient around 10000 kN·m-3 by backfill grouting to realize a balance between economy and safety. ©, 2015, Editorial Office of Modern Tunnelling Technology". All right reserved."
引用
收藏
页码：110 / 114and127
相关论文
共 18 条
  • [1] Yukio S., Kazuhiko K., Naomi O., Et al., An Evaluation Method of Longitudinal Stiffness of Shield Tunnel Linings for Application to Seismic Response Analyses, Proceedings of Japan Society of Civil Engineering, pp. 319-327, (1988)
  • [2] Liao S., Effect of Longitudinal Shear Transfer of the Circular Tunnel, (2002)
  • [3] Xu L., Research on Longitudinal Settlement of Shield Tunnel in Soft Soil, (2005)
  • [4] Guo R., He C., Su Z., Et al., Study of Shearing Mechanical Properties of Segment Joints of Shield Tunnels, Modern Tunnelling Technology, 48, 4, pp. 72-77, (2011)
  • [5] Ye F., Analysis and Control of Upward Floatation Mechanism of the Shield Tunnel during Construction, (2007)
  • [6] Ye F., Zhu H., He C., Back-filled Grouts Diffusion Model and Its Pressure to Segments of Shield Tunnel, Rock and Soil Mechanics, 30, 5, pp. 1307-1312, (2009)
  • [7] Ye F., Zhu H., Ding W., Longitudinal Upward Movement Analysis of Shield Tunnel Based on Elastic Foundation Beam, China Railway Science, 29, 4, pp. 65-69, (2008)
  • [8] Zhu L., Ding W., Yang B., Effect of Shield Tunnel Uplift Caused by Back-Filled Grouting on Structure, Chinese Journal of Rock Mechanics and Engineering, 31, S1, pp. 3378-3382, (2012)
  • [9] Zhu F., Wang Y., Analysis of the Effects of Foundation Pit Construction on the Structural Deformation of an Existing Underlying Shield Tunnel, Modern Tunnelling Technology, 50, 3, pp. 94-100, (2013)
  • [10] Wang Q., Yang J., Xue Y., Et al., Study of Segment Floating During Shield Tunneling in Soft Soil Stratum, Modern Tunnelling Technology, 51, 1, pp. 144-152, (2014)
12