Geomechanics and Engineering

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Experimental and numerical study on performance of long-short combined retaining piles

  • Xu, Chang J. (Insitute of Geotechnical Engineering, School of Civil Engineering and Architecture, East China Jiaotong University) ;
  • Ding, Hai B. (Insitute of Geotechnical Engineering, School of Civil Engineering and Architecture, East China Jiaotong University) ;
  • Luo, Wen J. (Insitute of Geotechnical Engineering, School of Civil Engineering and Architecture, East China Jiaotong University) ;
  • Tong, Li H. (Insitute of Geotechnical Engineering, School of Civil Engineering and Architecture, East China Jiaotong University) ;
  • Chen, Qing S. (Insitute of Geotechnical Engineering, School of Civil Engineering and Architecture, East China Jiaotong University) ;
  • Deng, Jian L. (Zhejiang Hanghai Intercity Railway Co., Ltd)
  • Received : 2019.03.21
  • Accepted : 2020.01.29
  • Published : 2020.02.10
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Abstract

Laboratory tests are conducted to investigate the performance of retaining system with different combinations of long-short piles. Numerical analysis implemented using ABAQUS are verified by comparing numerical results with measured data. By performing numerical studies, the horizontal displacement of piles, heave of excavation bottom and bending moment of pile for various pile system with different pile lengths are investigated. Results show that long piles share higher bending moments than short piles. The increase in the number of short piles leads to a slight increase in the heave at excavation bottom for long-short pile retaining system. Retaining system with different long and short pile combinations have greater effects on the horizontal displacement of pile above the excavation bottom, compared to its counterparts below excavation bottom. For a given length of long pile, the bending moment and displacement of piles increase with the decrease in length of short piles, while the increasing rate of maximum moment of retaining pile system is insignificant. Results highlight that a reliable and economical pile retaining system can be designed by optimizing the number and length of short piles, provided that the working performance of retaining structures above excavation bottom meets the design requirement in practice.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China (NSFC)

Thanks are given to people and organizations who contribute to the success of this work. The financial support from National Natural Science Foundation of China (NSFC Grant No. 51878276) the China National Funds for Distinguished Young Scholar (NSFC Grant No.51725802) and Jiangxi Key Laboratory of Infrastructure Safety Control in Geotechnical Engineering (No. 20161BCD40010) is gratefully acknowledged.

References

  1. Amar, B. (2011), "Finite element analysis of a piled footing under horizontal loading", Geomech. Eng., 3(1), 29-43. https://doi.org/10.12989/gae.2011.3.1.029.
  2. Bisaws, S.K., Mukherjee, S., Chakrabarti, S. and De, M. (2014), "Experimental investigation of free head model piles under lateral load in homogenous and layered sand", Int. J. Geotech. Eng., 9(4), 363-378. https://doi.org/10.1179/1939787914Y.0000000078.
  3. Burd, H.J., Dong, Y.P. and Houlsby, G.T. (2016), "Finite-element analysis of a deep excavation case history", Geotechnique, 66(1), 1-15. https://doi.org/10.1680/jgeot.14.P.234.
  4. Cheng, M.H., Huang, M.W., Pan, Y.W. and Liao, J.J. (2016), "Lessons from a failure case of an excavated floodway supported by precast cantilever pile walls", Eng. Geol., 209, 106-118. https://doi.org/10.1016/j.enggeo.2016.05.014.
  5. El-Garhy, B., Galil, A.A., Youssef, A.F. and Raia, M.A. (2013), "Behavior of raft on settlement reducing piles:experimental model study", J. Rock Mech. Geotech. Eng., 5(5), 389-399. https://doi.org/10.1016/j.jrmge.2013.07.005.
  6. Farzi, M., Pakbaz, M.S. and Aminpour, H.A. (2018), "Selection of support system for urban deep excavations: A case study in Ahvaz geology", Case Stud. Construct. Mater., 8, 131-138. https://doi.org/10.1016/j.cscm.2018.01.004.
  7. Guo, W.D. (2006), "On limiting force profile, slip depth and response of lateral piles", Comput. Geotech., 33(1), 47-67. https://doi.org/10.1016/j.compgeo.2006.02.001.
  8. Gupta, B. and Basu, D. (2017), "Analysis of laterally loaded short and long piles in multilayered heterogeneous elastic soil", Soils Found., 57(1), 92-110. https://doi.org/10.1016/j.sandf.2017.01.007.
  9. Hong, S.H., Lee, F.H. and Yong, K.Y. (2003), "Three-dimensional pile-soil interaction in soldier-piled excavations", Comput. Geotech., 30(1), 81-107. https://doi.org/10.1016/S0266-352X(02)00028-9.
  10. Ito, T. and Matsui, T. (1975), "Methods to estimate lateral force acting on stabilizing piles", Soils Found., 15(4), 43-59. https://doi.org/10.3208/sandf1972.15.4_43.
  11. Jiang, S., Du, C. and Sun, L. (2018), "Numerical analysis of sheet pile wall structure considering soil-structure interaction", Geomech. Eng., 16(3), 309-320. https://doi.org/10.12989/gae.2018.16.3.309.
  12. Leung, C.F., Chow, Y.K. and Shen, R.F. (2000), "Behavior of pile subject to excavation-induced soil movement", J. Geotech. Geoenviron. Eng., 126(11), 947-954. https://doi.org/10.1061/(ASCE)1090-0241(2000)126:11(947).
  13. Li, Z., Zheng, G. and Wang, H.X. (2010), "Model tests on work behaviors of retaining piles with different lengths and horizontal support", Chin. J. Geotech. Eng., (s1), 440-446 (in Chinese).
  14. Liang, F., Li, Y., Li, L. and Wang, J. (2014), "Analytical solution for laterally loaded long piles based on Fourier-Laplace integral", Appl. Math. Modell., 38(21-22), 5198-5216. https://doi.org/10.1016/j.apm.2014.03.052.
  15. 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.
  16. Liu, X.L. and Zhou, H. (2011), "Investigation on behavior of rocksocketed retaining piles for deep excavation", Key Eng. Mater., 462, 825-830. https://doi.org/10.4028/www.scientific.net/KEM.462-463.825.
  17. Poulos, H.G. and Chen, L.T. (1997), "Pile response due to unsupported excavation-induced lateral soil movement", Can. Geotech. J., 33(4), 670-677. https://doi.org/10.1139/t96-091-312.
  18. Qian, Q. (2016), "Present state, problems and development trends of urban underground space in China", Tunn. Undergr. Sp. Technol., 55, 280-289. https://doi.org/10.1016/j.tust.2015.11.007.
  19. Schofield, A.N., Wroth, P. (1968), Critical State Soil Mechanics, McGraw-Hill.
  20. Shen, Y., Yu, Y., Ma, F., Mi, F. and Xiang, Z. (2017), "Earth pressure evolution of the double-row long-short stabilizing pile system", Environ. Earth Sci. 76(16), 586. https://doi.org/10.1007/s12665-017-6907-z.
  21. Tang, L., Cong, S., Xing, W., Ling, X., Geng, L., Nie, Z. and Gan, F. (2018), "Finite element analysis of lateral earth pressure on sheet pile walls", Eng. Geol., 244, 146-158. https://doi.org/10.1016/j.enggeo.2018.07.030.
  22. Ukritchon, B., Faustino, J.C. and Keawsawasvong, S. (2016), "Numerical investigations of pile load distribution in pile group foundation subjected to vertical load and large moment", Geomech. Eng., 10(5), 577-598. https://doi.org/10.12989/gae.2016.10.5.577.
  23. Wang, G.H. and Yang, Y.Y. (2011), "Study on earth pressure of foundation pit excavation by model test", Adv. Mater. Res., 261, 1089-1093. https://doi.org/10.4028/www.scientific.net/AMR.261-263.1089.
  24. Wang, M., Wang, G. and Wu, S. (2015), "Stability analysis of soil behind a vertical free-face between supporting piles", Eng. Geol., 195, 155-163. https://doi.org/10.1016/j.enggeo.2015.06.013.
  25. Xu, C., Xu, Y. and Sun, H. (2015), "Application of long-short pile retaining system in braced excavation", Int. J. Civ. Eng., 13(2), 81-89. http://dx.doi.org/10.22068/IJCE.13.2.81.
  26. Zheng, G. and Cheng, X.S. (2008), "Experimental study on cantilever contiguous retaining piles with different lengths", Chin. J. Geotech. Eng., 30(s1), 410-415 (in Chinese).

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