Geomechanics and Engineering

  • 제35권2호
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  • Pages.195-208
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  • 2023
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
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Experimental study on the vertical bearing behavior of nodular diaphragm wall in sandy soil based on PIV technique

  • Jiujiang Wu (Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Southwest University of Science and Technology) ;
  • Longjun Pu (Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Southwest University of Science and Technology) ;
  • Hui Shang (Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Southwest University of Science and Technology) ;
  • Yi Zhang (Shanghai Horizon Construction Development Co., Ltd.) ;
  • Lijuan Wang (State Key Laboratory of GeoHazrd Prevention and GeoEnvironment Protection, Chengdu University of Technology) ;
  • Haodong Hu (Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province, Southwest University of Science and Technology)
  • 투고 : 2023.05.24
  • 심사 : 2023.09.26
  • 발행 : 2023.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

The nodular diaphragm wall (NDW) is a novel type of foundation with favorable engineering characteristics, which has already been utilized in high-rise buildings and high-speed railways. Compared to traditional diaphragm walls, the NDW offers significantly improved vertical bearing capacity due to the presence of nodular parts while reducing construction time and excavation work. Despite its potential, research on the vertical bearing characteristics of NDW requires further study, and the investigation and visualization of its displacement pattern and failure mode are scant. Meanwhile, the measurement of the force component acting on the nodular parts remains challenging. In this paper, the vertical bearing characteristics of NDW are studied in detail through the indoor model test, and the displacement and failure mode of the foundation is analyzed using particle image velocimetry (PIV) technology. The principles and methods for monitoring the force acting on the nodular parts are described in detail. The research results show that the nodular part plays an essential role in the bearing capacity of the NDW, and its maximum load-bearing ratio can reach 30.92%. The existence of the bottom nodular part contributes more to the bearing capacity of the foundation compared to the middle nodular part, and the use of both middle and bottom nodular parts increases the bearing capacity of the foundation by about 9~12% compared to a single nodular part of the NDW. The increase in the number of nodular parts cannot produce a simple superposition effect on the resistance born by the nodular parts since the nodular parts have an insignificant influence on the exertion and distribution of the skin friction of NDW. The existence of the nodular part changes the displacement field of the soil around NDW and increases the displacement influence range of the foundation to a certain extent. For NDWs with three different nodal arrangements, the failure modes of the foundations appear to be local shear failures. Overall, this study provides valuable insights into the performance and behavior of NDWs, which will aid in their effective utilization and further research in the field.

키워드

과제정보

This research is supported by the National Nature Science Foundation of China (Grant No. 42007247), National Foreign Expert Project (No. DL2023036001L), Nature Science Foundation of Sichuan Province (No. 2022NSFSC1151), Scientific and Technological Innovation Projects of Housing and Urban-rural Construction in Sichuan Province (No. SCJSKJ2022-09) as well as Selected Funding of Scientific and Technological Activities for Oversea Talents in Sichuan.

참고문헌

  1. Al-Bayati, A.W., AL-Neami, M. and Rahil, F.H. (2023), "Experimental work on the effect of under-reamed pile geometry on the pullout capacity of sand", Int. J. Eng., 36(9), 1645-1651. https://doi.org/10.5829/ije.2023.36.09c.08.
  2. Al-Neami, M.A., Al-Dahlaki, M.H. and Al-Majidy, A.H. (2022), "Investigation of laterally loaded pile response and cohesionless soil deformation pattern using PIV technique", Geotech. Eng. Sustain. Constr., 423-434. https://doi.org/10.1007/978-981-16-6277-5_34.
  3. Chen, Y., Deng, A., Lu, F. and Sun, H. (2020), "Failure mechanism and bearing capacity of vertically loaded pile with partially-screwed shaft: experiment and simulations", Comput Geotech., 118, 103337. https://doi.org/10.1016/j.compgeo.2019.103337.
  4. Cheraghi, A. and Ghorbani-Tanha, A.K. (2023), "Numerical analysis of an innovative expanding pile under static and dynamic loading", Geomech. Eng., 32(4), 453-462. https://doi.org/10.12989/gae.2023.32.4.453.
  5. Emirler, B., Tolun, M. and Laman, M. (2015), "Experimental investigation of the uplift capacity of group anchor plates embedded in sand", Geomech. Eng., 11(5), 691-711. https://doi.org/10.12989/gae.2016.11.5.691.
  6. Jala, S. K., Rawat, S. and Gupta, A.K. (2022), "Effect of underreamed pervious concrete columns on load-carrying capacity of loose cohesionless soils", Int. J. Geomech., 23(3), 04022304. https://doi.org/10.1061/IJGNAI.GMENG-7659.
  7. Majumder, M. and Chakraborty, D. (2021a), "Effects of scour-hole depth on the bearing and uplift capacities of under-reamed pile in clay", Ocean Eng., 240, 109927. https://doi.org/10.1016/j.oceaneng.2021.109927.
  8. Majumder, M. and Chakraborty, D. (2021b), "Bearing and uplift capacities of under-reamed piles in soft clay underlaid by stiff clay using lower-bound finite element limit analysis", Front Struct. Civ. Eng., 15, 537-551. https://doi.org/10.1007/s11709-021-0708-x.
  9. Majumder, M. and Chakraborty, D. (2022), "Under-reamed pile-soil interaction in sand under lateral loading: a three-dimensional numerical study", Ocean Eng., 263, 112398. https://doi.org/10.1016/j.oceaneng.2022.112398.
  10. Qian, Z., Lu, X. and Yang, W. (2019), "Comparative field tests on straight-sided and belled piers on sloping ground under combined uplift and lateral loads", J. Geotech. Geoenviron., 145(1), 04018099. https://doi.org/10.1061/(ASCE)GT.1943-5606.0001991
  11. Qian, Z., Lu, X. and Yang, W. (2020), "Comparative lateral load field tests on straight-sided and belled piers in sloped ground", Geotech. Eng., 173(1), 70-80. https://doi.org/10.1680/jgeen.18.00151.
  12. White, D.J., Take, W.A. and Bolton, M.D. (2003), "Soil deformation measurement using particle image velocimetry (PIV) and photogrammetry", Geotechnique., 53(7), 619-631. https://doi.org/10.1680/geot.2003.53.7.619.
  13. Wu, J., Cheng, Q., Wen, H. and Cao, J. (2015). "Comparison on the vertical behavior of lattice shaped diaphragm wall and pile group under similar material quantity in soft soil'', KSCE J. Civ. Eng., 19(7), 2051-2060. https://doi.org/10.1007/s12205-015-0367-3
  14. Wu, J., Cheng, Q., Wen, H., Wang, L., Li, Y. and Zhang, J. (2016), "A load transfer approach to rectangular closed diaphragm wall", P I Civil Eng-Geotec., 169(6), 509-526. http://dx.doi.org/10.1680/jgeen.15.00156.
  15. Wu, J., Wang, L. and Cheng, Q. (2017), "Soil arching effect of lattice-shaped diaphragm wall as bridge foundation", Front Struct. Civ. Eng., 11(4), 446-454. https://doi.org/10.1007/s11709-017-0397-7
  16. Wu, J., Wang, L. and Cheng, Q. (2023), "Numerical modeling of current-induced scour around multi-wall foundation using large-eddy simulation", Front Struct Civ Eng., 17, 546-565. https://doi.org/10.1007/s11709-023-0943-4.
  17. Watanabe, K., Mitsumori, A., Nishioka, H. and Koda, M. (2018), "Evaluation of heaving resistance for deep shaft using nodular diaphragm wall", Int J Geomech., 14(46), 40-45. https://doi.org/10.21660/2018.46.7265.
  18. Watanabe, K., Sei, H., Nishiyama, T. and Ishii, Y. (2011), "Static axial reciprocal load test of cast-in-place nodular concrete pile and nodular diaphragm wall", Geotech. Engi. J. SEAGS & AGSSEA., 42(2), 11-19.
  19. Yokoyama, T., Suzuki, T. and Ito, A. (2009), "The new symbol of Tokyo: Underground diaphragm walls that support the Tokyo Sky Tree", Cement Concrete, (752), 9-13. (in Japanese)
  20. Yu, J., Zhou, J., Zhang, R. and Gong, X. (2022), "Installation effects and behavior of a driven prestressed high-strength concrete nodular pile in deep saturated soft clay", Int. J. Geomech., 23(3), 05022007. https://doi.org/10.1061/IJGNAI.GMENG-8130.
  21. Yang, Y. and Qiu, L. (2020), "MPM simulation of uplift resistance of enlarged base piles in sand", Soils Found., 60(5), 1322-1330. https://doi.org/10.1016/j.sandf.2020.08.003.
  22. Zhou, J., Gong, X. and Zhang, R. (2019), "Model tests comparing the behavior of pre-bored grouted planted piles and a wished-in-place concrete pile in dense sand", Soils Found., 59(1), 84-96. https://doi.org/10.1016/j.sandf.2018.09.003.
  23. Zhou, J., Yu, J., Gong, X., El Naggar, H.M. and Zhang, R. (2021), "Field study on the behavior of pre-bored grouted planted pile with enlarged grout base", Acta Geotech., 16, 3327-3338. https://doi.org/10.1007/s11440-021-01208-7.