Open Access Articles Peer Reviewed

Study on Stress Characteristics Response of Submarine Shield Segment Under Ultra-high Water Pressure

Authors 5
  • Bing Li China Railway 14th Bureau Group Shield Engineering Co., Ltd.
    Show email Corresponding author: 3800508369@qq.com
  • kaichen ying Southwest Jiaotong University
  • Liupan Dou Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University https://orcid.org/0009-0002-8021-2881
  • Yuxiang Xing Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University
  • Yong Fang Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University https://orcid.org/0000-0002-2367-170X
Published: 2024-08-23 Issue: Vol. 24 , No. 3 Pages: 14-20 Cite this article DOI: 10.56748/ejse.24618

Abstract

In the construction and operation stage of shield tunnel, mastering and clarifying the mechanical characteristics of the overall structure is essential for ensuring shield tunnel safety. In this paper, the shell-spring model is established by ABAQUS finite element software for the ultra-high water pressure submarine shield tunnel. The mechanical behavior of shield segment structure under varying water pressure, different key block position and different strata is studied and analyzed. The results show that at the same segment assembly position, the axial force of the segment increases greatly with the increase of water pressure, and the growth rate is as high as 150 %. The internal force of the segment is mainly axial force. Under the ultra-high water pressure, the corresponding position of the maximum deformation of the segment is related to the position of the segment joint at the arch bottom. In the staggered assembly, the axial force fluctuation near the arch bottom is larger than that of the straight assembly, and the peak bending moment and the maximum axial force are near the invert. In addition, near the 120 degree of the vault, the bending moment oscillates obviously near the joint in the stratum with small coefficient of soil reaction. The larger the coefficient of soil reaction is, the more uniform the axial force of the whole segment is. The research results provide a theoretical insights for the optimization design of shield tunnel segments.

Keywords

  • tunnel engineering
  • shield tunnel
  • ultra-high water pressure
  • shell-spring model
  • structural internal force
972 599

References

  1. Arnau, O., Molins, C., 2011. Experimental and analytical study of the structural response of segmental tunnel linings based on an in situ loading test. Part 2: Numerical simulation. Tunn. Undergr. Space Technol. 26, 778–788. DOI: https://doi.org/10.1016/j.tust.2011.04.005
  2. Feng, K., Zhang, L., Guo, W., Yang, R., He, C., Zhang, J., 2021. Analysis on the stiffness iteration of segmental joints in segmental linings: Method and sensitivity analysis. Tunn. Undergr. Space Technol. 115, 104043. DOI: https://doi.org/10.1016/j.tust.2021.104043
  3. Guan, Z., Deng, T., Wang, G., Jiang, Y., 2015. Studies on the key parameters in segmental lining design. J. Rock Mech. Geotech. Eng. 7, 674–683. DOI: https://doi.org/10.1016/j.jrmge.2015.08.008
  4. Hu Z., Luo L., Cai Z., 2005. Study on flat shell-elastic hinge-foundation model in shield tunnel. Rock Soil Mech. 1403–1408.
  5. Huang, X., Liu, W., Zhang, Z., Wang, Q., Wang, S., Zhuang, Q., Zhu, Y., Zhang, C., 2019. Exploring the three-dimensional response of a water storage and sewage tunnel based on full-scale loading tests. Tunn. Undergr. Space Technol. 88, 156–168. DOI: https://doi.org/10.1016/j.tust.2019.03.003
  6. Huang Z., 2007. Study on the mechanics character of shield tunnel segment with Shell-spring model (Doctoral thesis). Hohai University, NanJing, JiangSu.
  7. Kavvadas, M., Litsas, D., Vazaios, I., Fortsakis, P., 2017. Development of a 3D finite element model for shield EPB tunnelling. Tunn. Undergr. Space Technol. 65, 22–34. DOI: https://doi.org/10.1016/j.tust.2017.02.001
  8. Kou, L., Xiong, Z., Cui, H., Zhao, J., 2021. Study on Mechanical Characteristics of Segmental Joints of a Large-Diameter Shield Tunnel under Ultrahigh Water Pressure. Sensors 21, 8392. DOI: https://doi.org/10.3390/s21248392
  9. Lei, M., Lin, D., Shi, C., Ma, J., Yang, W., 2018. A structural calculation model of shield tunnel segment: heterogeneous equivalent beam model. Adv. Civ. Eng. 2018. DOI: https://doi.org/10.1155/2018/9637838
  10. Liu, J., Shi, C., Gong, C., Lei, M., Wang, Z., Peng, Z., Cao, C., 2022. Investigation of ultimate bearing capacity of shield tunnel based on concrete damage model. Tunn. Undergr. Space Technol. 125, 104510. DOI: https://doi.org/10.1016/j.tust.2022.104510
  11. Liu, J., Shi, C., Lei, M., Wang, Z., Cao, C., Lin, Y., 2021. A study on damage mechanism modelling of shield tunnel under unloading based on damage–plasticity model of concrete. Eng. Fail. Anal. 123, 105261. DOI: https://doi.org/10.1016/j.engfailanal.2021.105261
  12. Liu, X., Feng, K., He, C., Zhang, H., 2022. Quantitative Evaluation Index for Analysis of Assembly Effect on Shield Tunnel Segment Structures. KSCE J. Civ. Eng. 26, 4117–4127. DOI: https://doi.org/10.1007/s12205-022-1628-6
  13. Liu, X., Jiang, Y., Li, X., Zang, Q., Yue, J., 2023. Comparative Analysis and Safety Evaluation of Shield Segment Structure Model under Surcharge Loading. Materials 16, 6806. DOI: https://doi.org/10.3390/ma16206806
  14. Sun, J., Pei, X., Yang, C., Zhu, B., 2023. Dynamic response analysis of the process of the utility shield tunnel under-passing the operating subway tunnel. Electron. J. Struct. Eng. 23, 44–52. DOI: https://doi.org/10.56748/ejse.234433
  15. Wang, L., Wang, Z., Li, L., Wang, J., 2011. Construction behavior simulation of a hydraulic tunnel during standpipe lifting. Tunn. Undergr. Space Technol. 26, 674–685. DOI: https://doi.org/10.1016/j.tust.2011.05.009
  16. Xu, G., He, C., Lu, D., Wang, S., 2019. The influence of longitudinal crack on mechanical behavior of shield tunnel lining in soft-hard composite strata. Thin-Walled Struct. 144, 106282. DOI: https://doi.org/10.1016/j.tws.2019.106282
  17. Yan, Q., Zhang, C., Wu, W., Zhu, H., Yang, W., 2019. 3D Numerical Simulation of Shield Tunnel Subjected to Swelling Effect Considering the Nonlinearity of Joint Bending Stiffness. Period. Polytech. Civ. Eng. 63, 751–762. DOI: https://doi.org/10.3311/PPci.13996
  18. Yang, F., Liu, G., Wang, Y., Yu, S., 2022. Numerical Investigation of the Segmental Lining Performance for a Shield Tunnel. KSCE J. Civ. Eng. 26, 2443–2455. DOI: https://doi.org/10.1007/s12205-022-1068-3
  19. Zhang, L., Feng, K., He, C., Yang, W., Zhang, J., Xiao, M., 2023. Numerical investigation of the compression–bending stiffness of segmental joints with different types of joint surfaces. Tunn. Undergr. Space Technol. 132, 104898. DOI: https://doi.org/10.1016/j.tust.2022.104898
  20. Zhang, S., Dai, L., Yuan, X., Wang, Q., Xu, J., 2023. DEM-based analysis of water inrush process of underground engineering face with intermittent joints in karst region. Electron. J. Struct. Eng. 23, 59–65. DOI: https://doi.org/10.56748/ejse.23480
  21. Zhong, X., Zhu, W., Huang, Z., Han, Y., 2006. Effect of joint structure on joint stiffness for shield tunnel lining. Tunn. Undergr. Space Technol. 21, 406–407. DOI: https://doi.org/10.1016/j.tust.2005.12.215
  22. Zhu H., Zhou L., Zhu J., 2019. Beam-spring generalized model for segmental lining and simulation of its nonlinear rotation. Chin. J. Geotech. Eng. 41, 1581–1590.