Numerical investigation into the effect of stepping on the circumferential joint in the precast tunnel segments under TBM thrust jacks

Abstract

The mechanized tunnelling process is mainly coupled with precast concrete segments, which include segmental rings that they are placed in their place simultaneously with the boring operation. Segments are mainly loaded by thrust jacks during the installation stage. It is essential to limit the cracks and damages of the segments during this stage to be sure of their structural integrity and sustainability. Stepping on the circumferential joint is a problem that can occur during the ring assembly. The main purpose of this study is to investigate the effect of the stepping under the load caused by thrust jacks. For this aim, the occurred stepping has been analyzed in the Tabriz metro line 2 project. In this research, the stepping has been investigated in four states, including non-stepping state, 1-cm stepping state, 2-cm stepping state, and 3-cm stepping state. Each state also has four positions, which include stepping on the right side of the ring, on the left side, on the floor, and on the roof. According to the results of the numerical modeling, increasing the amount of the stepping increases the damages. These damages have reached their highest level when the segment has stepping at the roof position.

This is a preview of subscription content, log in to check access.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9

References

  1. Blom CBM, Van der Horst EJ, Jovanovic PS (1999) Three-dimensional structural analyses of the shield-driven “green heart” tunnel of the high-speed line south. Tunn Undergr Sp Tech 14:217–224. https://doi.org/10.1016/S0886-7798(99)00035-8

    Article  Google Scholar 

  2. Burgers R (2006) Non-linear FEM modelling of steel fibre reinforced concrete for the analysis of tunnel segments in the thrust jack phase. Delft University of Technology, Delft, Netherlands, TUDelft

    Google Scholar 

  3. Cavalaro SHP, Blom CBM, Walraven JC, Aguado A (2011) Structural analysis of contact deficiencies in segmented lining. Tunn Undergr Sp Tech 26:734–749. https://doi.org/10.1016/j.tust.2011.05.004

    Article  Google Scholar 

  4. Cavalaro SHP, Blom CBM, Aguado A, Walraven JC (2012a) New design method for the production tolerances of concrete tunnel segments, Journal of Performance of Constructed Facilities, ASCE. Am Soc Civil Eng 26:824–834. https://doi.org/10.1061/(ASCE)CF.1943-5509.0000291

    Article  Google Scholar 

  5. Cavalaro SHP, Blom CBM, Walraven JC, Aguado A (2012b) Formation and accumulation of contact deficiencies in a tunnel segmented lining. Appl Math Model 36:4422–4438. https://doi.org/10.1016/j.apm.2011.11.068

    Article  Google Scholar 

  6. Chang CT, Wang MJ, Chang CT, Sun CW (2001) Repair of displaced shield tunnel of Taipei rapid transit system. Tunn Undergr Sp Tech 16:167–173. https://doi.org/10.1016/S0886-7798(01)00050-5

    Article  Google Scholar 

  7. Chen JS, Mo HH (2009) Numerical study on crack problems in segments of shield tunnel using finite element method. Tunn Undergr Sp Tech 24:91–102. https://doi.org/10.1016/j.tust.2008.05.007

    Article  Google Scholar 

  8. Groeneweg TW (2007) Shield driven tunnels in ultra high strength concrete, reduction of the lining thickness. Delft University of Technology, Delft, Netherlands

    Google Scholar 

  9. Itasca (2015) FLAC3D user’s guide (Fast Lagrangian Analysis of Continua in 3Dimensions). Itasca Consulting Group Inc., Version 5.1 Itasca, www.itascacg.com

  10. Lee KM, Hou XY, Ge XW, Tang Y (2001) An analytical solution for a jointed shield-driven tunnel lining. Int J Numer Anal Met 25:365–390. https://doi.org/10.1002/nag.134

    Article  Google Scholar 

  11. Mo HH, Chen JS (2008) Study on inner force and dislocation of segments caused by shield machine attitude. Tunn Undergr Sp Tech 23:281–291. https://doi.org/10.1016/j.tust.2007.06.007

    Article  Google Scholar 

  12. Sugimoto M (2006) Causes of shield segment damages during construction. In: Int. Symp. on Underground Excavation and Tunnelling, International Tunneling Association (ITA), pp 67-74.

  13. TURO (2012) Structural analysis and design of segmental tunnel lining of Tabriz metro line 2 (in Persian). TURO, Iran

    Google Scholar 

  14. Waal RD (1999) Steel fibre reinforced tunnel segments for the application in shield driven tunnels.

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to Yilmaz Özçelik.

Additional information

Responsible Editor: Zeynal Abiddin Erguler

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Karimi, M., Chakeri, H., Namin, F.S. et al. Numerical investigation into the effect of stepping on the circumferential joint in the precast tunnel segments under TBM thrust jacks. Arab J Geosci 13, 754 (2020). https://doi.org/10.1007/s12517-020-05740-w

Download citation

Keywords

  • Mechanized tunnelling
  • Segment
  • Stepping
  • Thrust jacks
  • Numerical modeling