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Finite Element Analysis of Effects of Improvement of Soil Between Double-Row Piles

双排桩桩间土加固影响的有限元分析

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Abstract

Double-row pile (DRP) retaining systems have been widely used in deep excavations in China. Soil between the front and back-row piles (FBP soil) is often improved to decrease the displacement of DRPs in soft soil areas, but the improvement efficiency has rarely been researched. A large and deep excavation supported by a DRP retaining system is introduced, and the effect of FBP soil improvement is discussed by comparing the finite element analysis and the monitoring results. Then, a parametric study of DRP using the finite element method considering the small strain of soil is conducted to investigate the effect of FBP soil improvement. It was shown that the pile deflection and bending moment decrease when the FBP soil is improved. Moreover, the most efficient way to minimize the pile deflection and bending moment is to improve the FBP soil around the excavation level. The FBP soil improvement 2–4 m below the pile head is not very useful for reducing the pile deflection and can be eliminated when the pile displacement limit is not very strict.

摘要

双排桩支护系统在中国深基坑工程中得到了广泛的应用. 在软土地基地区, 常对前后排桩桩间土进行改良, 以减小双排桩的位移, 但其改良效果研究较少. 以某大深基坑为例, 通过有限元分析与监测结果对比, 讨论了前后排桩桩间土体改良的效果. 在此基础上, 采用考虑土体小应变的有限元法进行了双排桩参数化研究, 探讨了前后排桩桩间改良土体的效果. 结果表明: 改良前后排桩桩间土后, 桩身挠度和弯矩减小. 同时, 改善开挖水平周围的前后排桩桩间土是减小桩身挠度和弯矩的最有效途径. 在桩顶以下2~4 m处进行前后排桩桩间土改良对减小桩挠度作用不大, 在桩位移限制不是很严格的情况下可以消除.

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References

  1. PARK J S, JOO Y S, KIM N K. New earth retention system with prestressed wales in an urban excavation [J]. Journal of Geotechnical and Geoenvironmental Engineering, 2009, 135(11): 1596–1604.

    Article  Google Scholar 

  2. SIM J, JEONG S, KIM K. The effect of stabilizing piles on a self-supported earth-retaining wall [J]. Marine Georesources & Geotechnology, 2016, 34(3): 265–279.

    Article  Google Scholar 

  3. ZHENG G, NIE D, DIAO Y, et al. Numerical and experimental study of multi-bench retained excavations [J]. Geomechanics & Engineering, 2017, 13(5): 715–742.

    Google Scholar 

  4. LIU G B, WANG W D. Excavation engineering manual [M]. 2nd ed. Beijing: China Building Industry Press, 2009 (in Chinese).

    Google Scholar 

  5. KIM C, KWON J, IM J C, et al. A method for analyzing the self-supported earth-retaining structure using stabilizing piles [J]. Marine Georesources & Geotechnology, 2012, 30(4): 313–332.

    Article  Google Scholar 

  6. CAI Y Q, WANG L Z, CHEN Y M, et al. Cases of deep pit excavation with retaining structure formed from double-row pile in soft clay [J]. Journal of Building Structures, 1997, 18(4): 70–76 (in Chinese).

    Google Scholar 

  7. ZHENG G, LI X, LIU C, et al. Analysis of double-row piles in consideration of the pile-soil interaction [J]. Journal of Building Structures, 2004, 25(1): 99–106 (in Chinese).

    Google Scholar 

  8. ZHOU Y J, YAO A J, LI H B, et al. Correction of earth pressure and analysis of deformation for double-row piles in foundation excavation in Changchun of China [J]. Advances in Materials Science and Engineering, 2016, 2016: 9818160.

    Article  Google Scholar 

  9. OU C Y, WU T S, HSIEH H S. Analysis of deep excavation with column type of ground improvement in soft clay [J]. Journal of Geotechnical Engineering, 1996, 122(9): 709–716.

    Article  Google Scholar 

  10. SHEN S L, LUO C Y, XIAO X C, et al. Improvement efficacy of RJP method in Shanghai soft deposit [C]//U.S.-China Workshop on Ground Improvement Technologies 2009. Orlando: American Society of Civil Engineers, 2009: 170–178.

    Google Scholar 

  11. TAN Y, WEI B, LU Y, et al. Is basal reinforcement essential for long and narrow subway excavation bottoming out in Shanghai soft clay? [J]. Journal of Geotechnical and Geoenvironmental Engineering, 2019, 145(5): 05019002.

    Article  Google Scholar 

  12. IGNAT R, BAKER S, KARSTUNEN M, et al. Numerical analyses of an experimental excavation supported by panels of lime-cement columns [J]. Computers and Geotechnics, 2020, 118: 103296.

    Article  Google Scholar 

  13. ZHOU Z Y, NIE D Q, ZHANG W. Effect of passive zone improvement on the stability of a double-row pile-retained excavation [M]//Proceedings of GeoShanghai 2018 International Conference: Advances in Soil Dynamics and Foundation Engineering. Singapore: Springer, 2018: 536–542.

    Chapter  Google Scholar 

  14. OU C Y, CHIOU D C, WU T S. Three-dimensional finite element analysis of deep excavations [J]. Journal of Geotechnical Engineering, 1996, 122(5): 337–345.

    Article  Google Scholar 

  15. LEE F H, YONG K Y, QUAN K C N, et al. Effect of corners in strutted excavations: Field monitoring and case histories [J]. Journal of Geotechnical and Geoenvironmental Engineering, 1998, 124(4): 339–349.

    Article  Google Scholar 

  16. Shanghai Construction and Management Commission. Technical code for excavation engineering: DG/TJ 08-61-2018 [S]. Shanghai: Tongji University Press, 2018 (in Chinese).

    Google Scholar 

  17. HORPIBULSUK S, LIU M D, LIYANAPATHIRANA D S, et al. Behaviour of cemented clay simulated via the theoretical framework of the Structured Cam Clay model [J]. Computers and Geotechnics, 2010, 37(1/2): 1–9.

    Article  Google Scholar 

  18. KONGSUKPRASERT L, TATSUOKA F. Small strain stiffness and non-linear stress-strain behaviour of cement-mixed gravelly soil [J]. Soils and Foundations, 2007, 47(2): 375–394.

    Article  Google Scholar 

  19. LANG L, LI F D, CHEN B. Small-strain dynamic properties of silty clay stabilized by cement and fly ash [J]. Construction and Building Materials, 2020, 237: 117646.

    Article  Google Scholar 

  20. LIANG Z R, LI Z C, LIU J. Strength tests on soil-cement mixed piles by triaxial stirring machine [J]. Chinese Journal of Geotechnical Engineering, 2010, 32(S2): 475–478 (in Chinese).

    Google Scholar 

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Authors and Affiliations

  1. Shanghai Municipal Engineering Design General Institute (Group) Co., Ltd., Shanghai, 200092, China

    Dongqing Nie  (聂东清), Zhiyang Zhai  (翟之阳) & Wei Zhang  (张 威)

  2. Changjiang River Scientific Research Institute, Wuhan, 430010, China

    Zhi Li  (李 志)

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  1. Dongqing Nie  (聂东清)
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  2. Zhiyang Zhai  (翟之阳)
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  3. Wei Zhang  (张 威)
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  4. Zhi Li  (李 志)
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Correspondence to Dongqing Nie  (聂东清).

Additional information

Foundation item: the Key Research Program of Shanghai Construction Group (No. 17JCSF-37)

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Nie, D., Zhai, Z., Zhang, W. et al. Finite Element Analysis of Effects of Improvement of Soil Between Double-Row Piles. J. Shanghai Jiaotong Univ. (Sci.) 29, 919–929 (2024). https://doi.org/10.1007/s12204-022-2501-y

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  • DOI: https://doi.org/10.1007/s12204-022-2501-y

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