Research on Uplift Mechanism of Shield Tunnel Based on Multi-factor Construction Conditions

Authors

  • Xiaorui Wang
  • Jiang Wang
  • Chunhui Huang
  • Qing Ye
  • Jinzhong Zhai

DOI:

https://doi.org/10.54097/t8pn3s55

Keywords:

Shield tunnel; tube sheet uplift; grouting pressure; numerical simulation.

Abstract

In order to investigate the influence degree of each factor on tube sheet uplift and tube sheet uplift law of shield tunneling, this thesis takes the background of Zhengzhou Railway Transit Line 6 Phase I Project Weizhuang Station ~ Cargo Station Street Station Interval Project, and establishes ABAQUS finite element numerical model based on the influence factors such as shield thrust, slurry density, grouting pressure, etc., and analyzes the interaction relationship between the influence factors of tube sheet uplift caused by the shield tunneling construction period. The paper investigates the uplift law of tube sheet and the mechanism of influencing factors during the construction period of shield tunnel, and obtains the relationship between grouting pressure and tube sheet uplift, jack thrust and slurry density and tube sheet uplift under the influence of a single factor; the thesis also discovers the location of the maximum uplift and the basic law, as well as the basic range of the uplift and the reduction of the uplift value in the late stage through the comprehensive analysis and calculation of the uplift and the influencing factors under different working conditions. The paper also finds out the location and basic law of the maximum uplift of the tube sheet under different working conditions, and the basic range of the downsizing value of the uplift in the later stage.

Downloads

Download data is not yet available.

References

FU H L , SHI Y, CHEN L G , et al.Numerical Simulation of Segment Floating Mechanism of Shield Tunnel during Construction Period[J].Journal of China and Foreign Highway, 2019, 39(1):174-179.

WEI G, HONG J, WEI X J .Mechnical analysis of segment floating during shield tunnel construction [J].Chinese Journal of Rock Mechanics and Engineering , 2012, 31(6):1257-1263.

Xiao M Q , Sun W H , Han X Y .Research on upward moving of segments of shield tunel[J].Rock and Soil Mechanics , 2009, 30, (4): 1041-1045+1056.

Ye F, Zhu H H , Ding W Q , et al.Analysis and Control of Upward Moving of Shield Tunnel Under Construction [J]. Journal of Tongji University(Natural Science), 2008(6):738-743.

JI C, ZHOU S H , XU K, et al.Field test research on influence factor of upward moving of shield tunnel segments during construction [J].Chinese Journal of Rock Mechanics and Engineering, 2013, 32(S 2):3619-3626.

Wang Q Y , Yang J H , Xue Y L , et al.Study of Segment Floating During Shield Tunneling in Soft Soil Stratum[J].Modern Tunneling Technology, 2014,51(1):144-152.

YE J N , LIU Y, CHEN R P , et al.Study of the permissible value of upward floating for segment in shield tunnel construction [J].Chinese Journal of Rock Mechanics and Engineering , 2014,33(S 2):4067-4074.

Pi J K , Zhao Y C .Causes and Countermeasures for Segment Uplift of Shield-bored Tunnels [J]. Tunnel Construction, 2009, 29(6):616-618.

YUAN M,LUO Z,JiANG H Y , et al.Study on the Floating Law of Metro Segments in Water-Rich Sandy Silt and Silty Clay Strata[J].KSCE Journal of Civil Engineering, 2022, 26(6): 2979-2991.

DONG Saishuai, YANG Ping, JIANG Chunyang, et al.Analysis of Mechanism and Controls of Segment Floating of Shield Tunnels[J].Chinese Journal of Underground Space and Engineering , 2016,12(1):49-54.

YANG Y D , CHEN K , LI F Y , et al.Control technologies for up-floating of segment rings of shield-bored tunnel in full-face hard-rock ground [J].Tunnel Construction, 2015,35(2):180-184.

ZHANG J, ZHAO L, ZHOU J M , et al.Research on Upward Moving Mechanism for Segment of Shield Tunnel[J].Railway Standard Design, 2016,60(10):88-93.

THOMAS K, G NTHER M.On the influence of face pressure, grouting pressure and TBM design in soft ground tunnelling [J]. Tunnelling and underground space technology, 2006, 21 (1):160-171.

Calculation of longitudinal bending moment and shear force for Shanghai Yangtze R iver Tunnel:application of lessons from Dutch research [J]. Tunnelling and Underground Space Technology In corporating Trenchless Technology Research, 2013, 35:161-171

Watanabe K, Sawada R, Koseki J.Uplift mechanism of open-cut tunnel in liquefied ground and simplified method to evaluate the stability against uplifting[J].Soils and Foundations, 2016, 56(3):412-426.

Downloads

Published

26-03-2024

Issue

Section

Articles

How to Cite

Research on Uplift Mechanism of Shield Tunnel Based on Multi-factor Construction Conditions. (2024). Academic Journal of Science and Technology, 10(1), 211-215. https://doi.org/10.54097/t8pn3s55

Similar Articles

1-10 of 243

You may also start an advanced similarity search for this article.