JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI ›› 2017, Vol. 34 ›› Issue (8): 125-129.DOI: 10.11988/ckyyb.20160783

• ROCK-SOIL ENGINEERING • Previous Articles     Next Articles

Influence of Shield Lifting on Supporting Structure of Pit During Tunnel Construction

KONG Qing-mei1, WEN Sen1, 2, ZHAO Li-min1   

  1. 1.School of Civil Engineering and Architecture, Henan University, Kaifeng 475004, China;
    2.Institute of Materials and Structures, Henan University, Kaifeng 475004, China
  • Received:2016-08-04 Revised:2016-10-13 Online:2017-08-01 Published:2017-08-18
  • Contact: 温 森(1981-),男,河南信阳人,副教授,硕士生导师,博士,主要从事地下工程方面的研究,(电话)15137857731(电子信箱)。
  • Supported by:
    国家自然科学基金项目(51608174); 河南省科技发展计划项目(162102310603); 河南省科技攻关计划项目(152102310299)

Abstract: Shield lifting is an important procedure in tunnel construction by shield method. Due to the large size of shield, heavy load and short lifting time, lifting process becomes a big risk in shield tunnel construction. During the lifting process, the displacement of continuous wall, the axial forces and deformation of supports were monitored in real time. Finite element method(FEM) was applied because the lifting process is very short and some monitoring programs are difficult to be conducted. Results showed that the data from FEM proved to be effective in comparison with measured data and the excavation is safe during the shield uplifting. The research results provide references for similar projects.

Key words: shield lifting, tunnel construction, numerical analysis, monitoring data, supporting structure

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