Structural Engineering and Mechanics

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PLAXIS 3D simulation, FLAC3D analysis and in situ monitoring of Excavation stability

  • Lei, Zhou (State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University) ;
  • Zahra, Jalalichi (Department of Mining Engineering, Amirkabir University of Technology) ;
  • Vahab, Sarfarazi (Department of Mining Engineering, Hamedan University of Technology) ;
  • Hadi, Haeri (Department of Mining Engineering, Higher Education Complex of Zarand) ;
  • Parviz, Moarefvand (Department of Mining Engineering, Amirkabir University of Technology) ;
  • Mohammad Fatehi, Marji (Department of Mining Engineering, Yazd University) ;
  • Shahin, Fattahi (Department of Mining Engineering, Higher Education Complex of Zarand)
  • Received : 2021.12.29
  • Accepted : 2022.12.06
  • Published : 2022.12.25
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Abstract

Near-surface excavations may cause the tilting and destruction of the adjacent superstructures in big cities. The stability of a huge excavation and its nearby superstructures was studied in this paper. Some test instruments monitored the deformation and loads at the designed location. Then the numerical models of the excavation were made in FLAC3D (a three-dimensional finite difference code) and Plaxis-3D (a three-dimensional finite element code). The effects of different supporting and reinforcement tools such as nails, piles, and shotcretes on the stability and bearing capacity of the foundation were analyzed through different numerical models. The numerically approximated results were compared with the corresponding in-field monitored results and reasonable compatibility was obtained. It was concluded that the displacement in excavation and the settlement of the nearby superstructure increases gradually as the depth of excavation rises. The effects of support and reinforcements were also observed and modeled in this study. The settlement of the structure gradually decreased as the supports were installed. These analyses showed that the pile significantly increased the bearing capacity and decreased the settlement of the superstructure. As a whole, the monitoring and numerical simulation results were in good consistency with one another in this practically important project.

Keywords

Acknowledgement

This work was financially supported by the Science and Technology Department of Sichuan Province (23GJHZ0191); the National Natural Science Foundation of China (52204104); the Open Project of State Key Laboratory of Coal Mine Disaster Dynamics and Control (2011DA105287-FW201905); the Open Fund of Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province (20kfgk01); the Opening Fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology (SKLGP2021K009); the State Key Laboratory for Geo-Mechanics and Deep Underground Engineering, China University of Mining & Technology (SKLGDUEK2111); the Sichuan University postdoctoral interdisciplinary Innovation Fund.

References

  1. Sung, E., Shahin, H.M., Nakai, T., Hinokio, M. and Yamamoto, M. (2006), "Ground behavior due to tunnel excavation with existing foundation", Soil. Found., 46(2), 189-207. https://doi.org/10.3208/sandf.46.189.
  2. Zhang, R., Zheng, J., Pu, H. and Zhang, L. (2011), "Analysis of excavation-induced responses of loaded pile foundations considering unloading effect", Tunnel. Undergr. Space Technol., 26(2), 320-335. https://doi.org/10.1016/j.tust.2010.11.003.
  3. Zhang, R.J., Zheng, J.J., Zhang, L.M. and Pu, H.F. (2011), "An analysis method for the influence of tunneling on adjacent loaded pile groups with rigid elevated caps", Int. J. Numer. Anal. Meth. Geomech., 35(18), 1949-1971. https://doi.org/10.1002/nag.989.
  4. Liu, C., Zhang, Z. and Regueiro, R.A. (2014), "Pile and pile group response to tunnelling using a large diameter slurry shield-Case study in Shanghai", Comput. Geotech., 59, 21-43. https://doi.org/10.1016/j.compgeo.2014.03.006.
  5. Zheng, G., Yan, Z.X., Lei, H.Y. and Lei, Y. (2007), "Field observation and finite element numerical simulation analysis of effect on adjacent piles due to excavation", Yantu Gongcheng Xuebao (Chin. J. Geotech. Eng.), 29(5), 638-643.
  6. Wang, W.D. and Xu, Z.H. (2010), "Simplified analysis method for evaluating excavation-induced damage of adjacent buildings", Chin. J. Geotech. Eng., 32(S1), 32-38.
  7. Gong, X.N., Wu, C.J., Yu, F., Fang, K. and Yang, M. (2013), "Shaft resistance loss of piles due to excavation beneath existing basements", Chin. J. Geotech. Eng., 35(11), 1957-1964.
  8. Wu, C.J., Gong, X.N., Yu, F., Lou, C.H. and Liu, N.W. (2014), "Pile base resistance loss for excavation beneath existing high-rise building", J. Zhejiang Univ. (Eng. Sci.), 48(4), 671-678.
  9. Wu, C.J., Gong, X.N., Fang, K., Yu, F. and Zhang, Q.Q. (2014), "Effect of excavation beneath existing buildings on loading stiffness of piles", Chin. J. Rock Mech. Eng., 33(8), 1526-1535.
  10. Shan, H.F., Xia, T.D., Yu, F. and Lou, C.H. (2015), "Settlement of pile groups associated with excavation beneath existing basement", Chin. J. Geotech. Eng., 37(1), 46-50.
  11. Zhang, Q.Q. (2012), "Test and theoretical study on bearing capacity behavior and settlement of pile in soft soils", Zhejiang University, Hangzhou, China.
  12. Shan, H.F., Xia, T.D. and Yu, F. (2016), "Settlement analysis of building piles associated with excavation beneath existing basement in soft soil", J. Central South Univ. (Sci. Technol.), 47(6), 1995-2000.
  13. Shan, H.F., Xia, T.D., Hu, J.H., Yu, F. and Qiu, H.M. (2015), "Buckling stability analysis of pile foundation for excavation beneath the basement of existing building", Rock Soil Mech., 36(2), 508-512.
  14. Shan, H.F., Xia, T.D. and Yu, F. (2016), "Buckling stability analysis on critical load of underpinning pile for excavation beneath existing building", J. Zhejiang Univ. (Eng. Sci.), 50(8), 1425-1430.
  15. Sabzi, Z. and Fakher, A. (2015), "The performance of buildings adjacent to excavation supported by inclined struts", Int. J. Civil Eng., 13(1), 1-13. https://doi.org/10.22068/IJCE.13.1.1.
  16. Hashemi, H., Naeimifar, I., Uromeihy, A. and Yasrobi, S. (2015), "Evaluation of rock nail wall performance in jointed rock using numerical method", Geotech. Geolog. Eng., 33(3), 593-607. https://doi.org/10.1007/s10706-015-9842-3.
  17. Miao, L.F., Goh, A.T.C., Wong, K.S. and Teh, C.I. (2006), "Three-dimensional finite element analyses of passive pile behaviour", Int. J. Numer. Anal. Meth. Geomech., 30(7), 599-613. https://doi.org/10.1002/nag.493.
  18. Wen, Y.W., Liu, S.Y., Hu, M.L. and Zhang, G.Z. (2013), "Deformation control techniques for existing buildings during construction process of basement", Chin. J. Geotech. Eng., 35(10), 1914-1921.
  19. Jin, H., Yu, K., Gong, Q. and Zhou, S. (2018), "Load-carrying capability of shield tunnel damaged by shield shell squeezing action during construction", Thin Wall. Struct., 132, 69-78. https://doi.org/10.1016/j.tws.2018.07.057.
  20. Li, Y., Zhou, H., Dong, Z., Zhu, W., Li, S. and Wang, S. (2018), "Numerical investigations on stability evaluation of a jointed rock slope during excavation using an optimized DDARF method", Geomech. Eng., 14(3), 271-281. https://doi.org/10.12989/gae.2018.14.3.271.
  21. Xue, Y., Li, X., Qiu, D., Ma, X., Kong, F., Qu, C. and Zhao, Y. (2019), "Stability evaluation for the excavation face of shield tunnel across the Yangtze River by multi-factor analysis", Geomech. Eng., 19(3), 283-293. https://doi.org/10.12989/gae.2019.19.3.283.
  22. Bai, T., Yang, H., Chen, X., Zhang, S. and Jin, Y. (2020), "In-situ monitoring and reliability analysis of an embankment slope with soil variability", Geomech. Eng., 23(3), 261-273. https://doi.org/10.12989/gae.2020.23.3.261.
  23. Qian, J., Tong, Y., Mu, L., Lu, Q. and Zhao, H. (2020), "A displacement controlled method for evaluating ground settlement induced by excavation in clay", Geomech. Eng., 20(4), 275-285. https://doi.org/10.12989/gae.2020.20.4.275.
  24. Deng, Z., Huang, H., Ye, B., Xiang, P. and Li, C. (2020), "Mechanical performance of RAC under true-triaxial compression after high temperatures", J. Mater. Civil Eng., 32(8), 04020194. https://doi.org/10.1061/(ASCE)MT.1943-5533.0003231.
  25. Deng, Z., Liu, B., Ye, B. and Xiang, P. (2020), "Mechanical behavior and constitutive relationship of the three types of recycled coarse aggregate concrete based on standard classification", J. Mater. Cycl. Waste Manage., 22(1), 30-45. https://doi.org/10.1007/s10163-019-00922-5.
  26. Mei, Y. and Song, Q. (2021), "Analytical solution for settlement of homogeneous structure where the tunnel passes underneath and its application", KSCE J. Civil Eng., 25(9), 3556-3567. https://doi.org/10.1007/s12205-021-1565-9.
  27. Qian, J.G., Li, W.Y., Yin, Z.Y. and Yang, Y. (2021), "Influences of buried depth and grain size distribution on seepage erosion in granular soils around tunnel by coupled CFD-DEM approach", Transp. Geotech., 29, 100574. https://doi.org/10.1016/j.trgeo.2021.100574.
  28. Mei, Y., Zhou, D., Wang, X., Zhao, L., Shen, J., Zhang, S. and Liu, Y. (2021), "Deformation law of the diaphragm wall during deep foundation pit construction on lake and sea soft soil in the Yangtze River Delta", Adv. Civil Eng., 2021, Article ID 6682921. https://doi.org/10.1155/2021/6682921.
  29. Wang, X., Ma, Z. and Zhang, Y.T. (2022), "Research on safety early warning standard of large-scale underground utility tunnel in ground fissure active period", Front. Earth Sci., 10, 828477. https://doi.org/10.3389/feart.2022.828477.
  30. Wang, X., Gong, H., Song, Q., Yan, X. and Luo, Z. (2022), "Risk assessment of EPB shield construction based on the nonlinear FAHP method", Adv. Civil Eng., 2022, Article ID 9233833. https://doi.org/10.1155/2022/9233833.
  31. Yuan, B., Li, Z., Chen, W., Zhao, J., Lv, J., Song, J. and Cao, X. (2022), "Influence of groundwater depth on pile-soil mechanical properties and fractal characteristics under cyclic loading", Fract. Fraction., 6(4), 198. https://doi.org/10.3390/fractalfract6040198.
  32. Wang, X., Song, Q. and Gong, H. (2022), "Research on deformation law of deep foundation pit of station in core region of saturated soft loess based on monitoring", Adv. Civil Eng., 2022, Article ID 7848152. https://doi.org/10.1155/2022/7848152.
  33. Zheng, G., Fan, Q., Zhang, T. and Zhang, Q. (2022), "Numerical study of the soil-tunnel and tunnel-tunnel interactions of EPBM overlapping tunnels constructed in soft ground", Tunnel. Undergr. Space Technol., 124, 104490. https://doi.org/10.1016/j.tust.2022.104490.
  34. Yuan, B., Chen, M., Chen, W., Luo, Q. and Li, H. (2022), "Effect of pile-soil relative stiffness on deformation characteristics of the laterally loaded pile", Adv. Mater. Sci. Eng., 2022, Article ID 4913887. https://doi.org/10.1155/2022/4913887.
  35. Li, S., Zhang, Y., Cao, M. and Wang, Z. (2022), "Study on excavation sequence of pilot tunnels for a rectangular tunnel using numerical simulation and field monitoring method", Rock Mech. Rock Eng., 1-17. https://doi.org/10.1007/s00603-022-02814-x.
  36. Yaylaci, M. (2022), "Simulate of edge and an internal crack problem and estimation of stress intensity factor through finite element method", Adv. Nano Res., 12(4), 405-414. https://doi.org/10.12989/anr.2022.12.4.405.
  37. Oner, E., Sengul Sabano, B., Uzun Yaylaci, E., Adiyaman, G., Yaylaci, M. and Birinci, A. (2022), "On the plane receding contact between two functionally graded layers using computational, finite element and artificial neural network methods", ZAMM-J. Appl. Math. Mech./Zeitschrift fur Angewandte Mathematik und Mechanik, 102(2), e202100287. https://doi.org/10.1002/zamm.202100287.
  38. Yaylaci, E.U., Oner, E., Yaylaci, M., Ozdemir, M.E., Abushattal, A. and Birinci, A. (2022), "Application of artificial neural networks in the analysis of the continuous contact problem", Struct. Eng. Mech., 84(1), 35-48. https://doi.org/10.12989/sem.2022.84.1.035.
  39. Yaylaci, M., Abanoz, M., Yaylaci, E. U., Olmez, H., Sekban, D. M. and Birinci, A. (2022), "The contact problem of the functionally graded layer resting on rigid foundation pressed via rigid punch", Steel Compos. Struct., 43(5), 661-672. https://doi.org/10.12989/scs.2022.43.5.661.
  40. Yaylaci, M., Sabano, B.S., Ozdemir, M.E. and Birinci, A. (2022), "Solving the contact problem of functionally graded layers resting on a HP and pressed with a uniformly distributed load by analytical and numerical methods", Struct. Eng. Mech., 82(3), 401-416. https://doi.org/10.12989/sem.2022.82.3.401.
  41. Gomez, G.M. (2011), "Pilot and market replication projects", Agreement Number-ECO/08/239011/SI2.535202, CIP EcoInnovation.
  42. Desai, C.S. and Christian, J.T. (1977), Numerical Methods in Geotechnical Engineering, McGraw-Hill Book Company.
  43. Itasca Consulting Group, Inc. (2019), FLAC3D-Fast Lagrangian Analysis of Continua in Three Dimensions (Version 7.0), Minneapolis, Itasca.
  44. Fakher, A., Cheshomi, A. and Khamechiyan, M. (2007), "The addition of geotechnical properties to a geological classification of coarse-grained alluvium in apediment zone", Quart. J. Eng. Geol. Hydrogeol., 40(2), 163-174. https://doi.org/10.1144/1470-9236/06-029.
  45. Olia, A. and Liu, J. (2011), "Numerical investigation of soil nail wall during construction", Geotechnical Conference Pan-Am CGS.
  46. Ghareh, S. and Saidi, M. (2012), "An investigation on the behavior of retaining structure of excavation wall using obtained result from numerical modeling and monitoring approach. (A Case Study of International" Narges Razavi 2 Hotel", Mashhad)", J. Struct Eng. Geo-Techniq., (2), 17-23.
  47. Wu, X., Wang, M.S. and Wang, M.C. (2000), "Earth-filled wide-base hollow piers for excavation support", Soil-Cement Other Constr. Pract. Geotech. Eng., 77-84. https://doi.org/10.1061/40500(283)7.