Centrifugal model tests and numerical simulations of pile-net composite foundation for heavy-load storage yard

LI Wei; ZHOU Chun-er; WU Jia-wu; DONG Hua-gang; REN Hong-lei

doi:10.11779/CJGE2022S2016

Volume 44 Issue S2

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Chinese Journal of Geotechnical Engineering > 2022 > 44(S2): 71-75. > DOI: 10.11779/CJGE2022S2016

LI Wei, ZHOU Chun-er, WU Jia-wu, DONG Hua-gang, REN Hong-lei. Centrifugal model tests and numerical simulations of pile-net composite foundation for heavy-load storage yard[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(S2): 71-75. DOI: 10.11779/CJGE2022S2016

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Centrifugal model tests and numerical simulations of pile-net composite foundation for heavy-load storage yard

LI Wei^{1, 2,},
ZHOU Chun-er³,
WU Jia-wu³,
DONG Hua-gang³,
REN Hong-lei^{1, 2, ,}

1.
Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China
2.
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing 210029, China
3.
Guangdong Province Planning & Design Institute for Water Transportation Co., Ltd., Guangzhou 510050, China

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Received Date: December 07, 2022
Available Online: March 26, 2023

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Abstract

Abstract

Based on the research background of pile-net composite foundation of the heavy-load storage yard of a wharf, the centrifugal model tests and three-dimensional numerical simulations are carried out to study the deformation and stress characteristics of the pile-net composite foundation under heavy loads. The results show that the values of foundation deformation, axial force at pile top, pore water pressure and pile-soil stress ratio obtained by the centrifugal model and numerical simulation are in good agreement, and the two methods can be complemented and verified for each other. Under the heavy loads, the displacement of the pile-net composite foundation is mainly the vertical settlement component, and the horizontal displacement component is small. The change rate of displacement meets the control requirements of yard stability.The pile-soil stress ratio in the composite foundation is between 20 and 40, and the CFG piles share more than half of the loads of the overlying storage yard, playing a key role in load sharing.
- CFG pile,
- deformation,
- pile-soil stress ratio,
- centrifugal model test,
- numerical simulation

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References

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