Geomechanics and Engineering

  • 제39권3호
  • /
  • Pages.227-240
  • /
  • 2024
  • /
  • 2005-307X(pISSN)
  • /
  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Theoretical and numerical simulation analysis of the control effect of isolation piles on surface settlement induced by foundation pit excavation

  • Kunpeng Li (College of Civil Engineering, Huaqiao University ) ;
  • Shihai Chen (College of Civil Engineering, Huaqiao University ) ;
  • Peng Zhao (Xiamen Construction Engineering Co., Ltd. Of China Railway First Group.) ;
  • Rupeng Pei (Xiamen Construction Engineering Co., Ltd. Of China Railway First Group.)
  • 투고 : 2023.11.02
  • 심사 : 2024.10.10
  • 발행 : 2024.11.10
⟨ 이전 논문 다음 논문 ⟩

초록

This study investigates the control effect of isolation piles on ground settlement resulting from foundation pit excavation. Based on the three-stage analysis method, first, the Kerr three-parameter foundation model is introduced, and the deflection differential equation is derived to solve the horizontal displacement of the diaphragm wall. Then, based on the horizontal displacement of the diaphragm wall, the boundary element method is used to calculate the additional stress at the boundary of the foundation pit, and the horizontal additional displacement and additional stress of the soil free field at the position of the isolation pile are obtained using the Mindlin solution. Subsequently, soil free field additional stress is applied to the pile foundation, and the shielding effect of group piles is also considered. Based on the Kerr three-parameter foundation model, the deflection differential equation of the pile foundation under the influence of horizontally oriented additional stress is established to solve the horizontal displacement of the isolated piles. Finally, the boundary element method is used again to invert the additional stress caused by the horizontal displacement of the isolation pile, and the surface settlement after the isolation pile is calculated in combination with the Mindlin vertical displacement solution. The spatial finite element model is established and compared with the theoretical calculation results to prove the rationality of the theory. The influence of basic construction parameters is analyzed theoretically, and it is found that the surface settlement is reduced by 30.9% compared with no isolation pile. Of the selected parameters in this paper, the effects of the isolation pile's controlled diameter, spacing, and elastic modulus, the thickness and elastic modulus of the diaphragm wall on the surface settlement are 4.9 mm, 3.1 mm, 3.3 mm, 3 mm, 1.7 mm, respectively, which are 45.4%, 28.7%, 30.6%, 27.8%, 15.7% of the standard working conditions, respectively. This shows that optimization of the isolation pile parameters has the best effect on surface settlement, optimization of the diaphragm wall parameters has the poor effect.

키워드

과제정보

The research described in this paper was financially supported by Science and Technology Plan of Fujian Provincial Department of Housing and Urban-Rural Development (Grant No. 2022K292). We are very grateful for the data and technical support of Xiamen Construction Engineering Co., Ltd. Of China Railway First Group, and the authors would like to thank reviewers for useful comments and editors for improving the manuscript.

참고문헌

  1. Algin, H.M., Ekmen, A.B. and Kaya, E. (2022), "3D seismic response assessment of barrette piled high-rise building with comprehensive subsurface modelling", Soil. Dyn. Earthq. Eng., 163(2022). https://doi.org/ 10.1016/j.soildyn.2022.107488.
  2. Avci, Y. and Ekmen, A.B. (2023), "Artificial intelligence assisted optimization of rammed aggregate pier supported raft foundation systems based on parametric three-dimensional finite element analysis", Structures., 56(2023). https://doi.org/10.1016/j.istruc.2023.105031.
  3. Bilotta, E. and Taylor, R.N. (2005), "Centrifuge modelling of tunnelling close to a diaphragm wall", Int. J. Phys. Model. Geo., 5(1), 27-41. https://doi.org/10.1680/ijpmg.2005.050103.
  4. Bilotta, E. (2008), "Use of diaphragm walls to mitigate ground movements induced by tunnelling", Geotechnique., 58(2), 143-155. https://doi.org/10.1680/geot.2008.58.2.143.
  5. Bilotta, E. and Russo, G. (2011), "Use of a line of piles to prevent damages induced by tunnel excavation", J. Geotech. Geoenviron., 137(3), 254-262. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000426.
  6. Cao, L.Q., Chen, X.S., Shen, X., Zhang, D.L., Su, D. and Fang, H.C. (2022), "Theoretical analysis of the barrier effect of embedded isolation piles on tunneling-induced vertical ground displacements", Comput. Geotech., 144(2022). https://doi.org/10.1016/J.COMPGEO.2021.104609.
  7. Cao, L.Q., Chen, X.S., Lin, X.T., Su, D., Fang, H.C. and Lu, D.C.(2023), "Analytical solutions for the restraint effect of isolation piles against tunneling-induced vertical ground displacements", J. Rock. Mech. Geotech., 15(10), 2582-2596. https://doi.org/10.1016/J.JRMGE.2023.03.002.
  8. Chen, R.P., Meng, F.Y., Li, Z.C., Ye, Y.H. and Hu, Q. (2016), "Considerable displacement and protective measures for metro tunnels adjacent deep excavation", J. Zhejiang. Univ. (Eng. Sci)., 50(5), 856-863. https://doi.org/10.3785/j.issn.1008-973X.2016.05.007.
  9. Chen, R.P., Ashraf, A.M. and Meng, F.Y. (2018), "Three-dimensional centrifuge modeling of influence of nearby excavations on existing tunnels and effects of cut-off walls", Chin. J. Geotech. Eng., 40(2), 6-11. https://doi.org/10.11779/CJGE2018S2002.
  10. Cheng, Y.C., Gong, D.K., Ye, J.N. and Zheng, X. (2019), "Effect analysis of isolation piles outside foundation pit on controlling lateral soil displacement", J. Disaster. Prevent. Mitigat. Eng., 39(3), 478-486.
  11. Ekmen, A.B., and Avci, Y. (2023), "Artificial Intelligence-Assisted Optimization of Tunnel Support Systems Based on the Multiple Three-Dimensional Finite Element Analyses Considering the Excavation Stages", Ijst-t. Civ. Eng., 47(3), 1725-1747. https://doi.org/ 10.1007/s40996-023-01109-7.
  12. Ekmen, A.B. and Avci, Y. (2024), "Development of novel artificial intelligence functions based on 3D finite element method using February 6 Kahramanmaras Seismic Records for earthquake effects prediction in various soils", Eng. Geol., 336(2024), 107570. https://doi.org/ 10.1016/j.enggeo.2024.107570.
  13. Farhangi, V. and Karakouzian, M. (2020), "Effect of fiber reinforced polymer tubes filled with recycled materials and concrete on structural capacity of pile foundations", Appl. Sci. Basel., 10(5). https://doi.org/10.3390/app10051554.
  14. Huang, K., Sun, Y.W., Kuang, X.L., Huang, X.Q., Liu, R.N. and Wu, Q.J. (2022), "Study on the restraint effect of isolation pile on surface settlement trough induced by shield tunnelling", Appl. Sci., 12(10), 4845-4845. https://doi.org/10.3390/APP12104845.
  15. Kerr, A.D. (1985), "On the Determination of Foundation Model Parameters", J. Geotech. Eng., 111(11), 1334-1340. https://doi.org/10.1061/(asce)0733-9410(1985)111:11(1334).
  16. Ledesma, A. and Alonso, E.E. (2017), "Protecting sensitive constructions from tunnelling: the case of world heritage buildings in Barcelona", Geotechnique, 67(10), 914-925. https://doi.org/10.1680/jgeot.SiP17.P.155.
  17. Li, T., Yang, M. and Chen, X. (2023a), "A Simplified Analytical Method for the Deformation of Pile Foundations Induced by Adjacent Excavation in Soft Clay", Buildings., 13(8),1919-. https://doi.org/10.3390/BUILDINGS13081919.
  18. Li, T., Yang, M. and Chen, X. (2023b), "Lateral deformation response of an adjacent passive pile under the combined action of surcharge loading and foundation excavation", Sustainability, 15(18). https://doi.org/10.3390/SU151813619.
  19. Ling, F.M., Chen, G.X. and Liu, X.Z. (2018), "Deformation characteristics of suspended curtain deep foundation pit of metro lines", Chin. J. Geotech. Eng., 40(12), 2182-2190. https://doi.org/10.11779/CJGE201812004.
  20. Luca, M. and Sebastiano, R. (2021), "Predicted and observed behaviour of pre-installed barriers for the mitigation of tunnelling effects", Tunn. Undergr. Sp. Tech., 118. https://doi.org/10.1016/J.TUST.2021.104200.
  21. Ma, H.L. and Liang, F.Y. (2018), Foundation Pit Engineering, Tsinghua University Press, Beijing, China.
  22. Mindlin, R.D. (1936), "Force at point in the interior of a semi-infinite solid", Physics, 7(1936), 195-202. https://doi.org/10.1063/1.1745385.
  23. Pasternak, P.L. (1954), Fundamentals of a New Method of Analyzing Structures on an Elastic Foundation By Means of Two Foundation Constants, Gosudarstvennoe Izdatelstro Liberaturi po Stroitelstvui Arkhitekture, Moscow, Russia.
  24. Rampello, S., Fantera, L. and Masini, L. (2019), "Efficiency of embedded barriers to mitigate tunnelling effects", Tunn. Undergr. Sp. Tech., 89(2019), 109-124. https://doi.org/10.1016/j.tust.2019.03.027.
  25. Stone, R.C., Farhangi, V. and Karakouzian, M.A. (2023), "A novel short pile foundation system bonded to highly cemented layers for settlement control", Can. Geotech. J., 60(9), 1332-1351. https://doi.org/10.1139/cgj-2020-0710.
  26. Tanahashi, H. (2004), "Formulas for an Infinitely Long Bernoulli-Euler Beam on the Pasternak Model", Soils. Found., 44(5), 109-118. https://doi.org/10.3208/sandf.44.5_109.
  27. Vesic, A.S. (1961), "Bending of beams resting on isotropic elastic solids", J. Soil. Mech. Found. Eng., 87(2), 35-53. https://doi.org/10.1061/JMCEA3.0000212.
  28. Xu, C.J. and Luo, Z.Y. (2011), "Internal force and deformation analysis of pile-brace support structure of foundation pit considering deformation compatibility", Appl. Mech. Mater., 1446(90-93), 446-452. https://doi.org/10.4028/www.scientific.net/AMM.90-93.446.
  29. Yao, W.J. and Yin, W.X. (2010), "Numerical simulation of a super-Long pile group under both vertical and lateral loads", Adv. Struct. Eng., 13(6), 1139-1151. https://doi.org/10.1260/1369-4332.13.6.1139
  30. Zhang, Z.G., Huang, M.S., Zhang, C.P. and Lu, M.H. (2019), "Time-domain analyses for pile deformation induced by adjacent excavation considering influences of viscoelastic mechanism", Tunn. Undergr. Sp. Tech., 85(2019), 392-405. https://doi.org/10.1016/j.tust.2018.12.020.
  31. Zhang, Z.G., Lu, M.H., Xu, C., Gong, J.F. and Zhao, Q.H. (2016), "Simplified Solution for Tunnelling-Induced Pile Foundation Deformation Based on the Kerr Foundation Model", Mod. Tunn. Technol., 53(6), , 55-66. https://doi.org/10.13807/j.cnki.mtt.2016.06.009.
  32. Zhao, C., Feng, Y., Wang W.J. and Niu, Z.J. (2023), "Mechanical properties and numerical analysis of underground continuous wall in underground grain silo foundation pit", Buildings, 13(2), 293-293. https://doi.org/10.3390/BUILDINGS13020293.
  33. Zheng, G., Du, Y. and Diao, Y. (2015), "Optimization analysis of efficiency of isolation piles in controlling the deformation of existing tunnels adjacent to deep excavation", Chin. J. Rock. Mech. Eng., 34(1), 3499-3509. https://doi.org/10.13722/j.cnki.jrme.2014.0235.
  34. Zhu, Y.P., Wu, L.P., Shi, D.B., Zhao, Z.F., Lv, X.X. and Duan, X.G. (2022), "Application of nonlinear soil resistance-pile lateral displacement curve based on Pasternak foundation model in foundation pit retaining piles", Rock. Soil. Mech., 43(9), 2581-2591. https://doi.org/10.16285/j.rsm.2021.193.