Centrifugal model tests on deformation characteristics of pile-net composite foundation under super-large loads

ZHANG Junjie; GU Xingwen; REN Guofeng; ZHOU Chuner; WANG Nianxiang

doi:10.11779/CJGE2024S10048

Volume 46 Issue S1

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Chinese Journal of Geotechnical Engineering > 2024 > 46(S1): 212-216. > DOI: 10.11779/CJGE2024S10048

ZHANG Junjie, GU Xingwen, REN Guofeng, ZHOU Chuner, WANG Nianxiang. Centrifugal model tests on deformation characteristics of pile-net composite foundation under super-large loads[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(S1): 212-216. DOI: 10.11779/CJGE2024S10048

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Centrifugal model tests on deformation characteristics of pile-net composite foundation under super-large loads

ZHANG Junjie^1,,
GU Xingwen^{2, 3},
REN Guofeng^{2, 3, ,},
ZHOU Chuner⁴,
WANG Nianxiang^{2, 3}

1.
Henan Nuclear Technology Application Center, Zhengzhou 450000, China
2.
Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China
3.
The National Key Laboratory of Water Disaster Prevention, Nanjing 210029, China
4.
Guangdong Province Planning & Design Institute for Water Transportation Co., Ltd., Guangzhou 510050, China

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Received Date: April 28, 2024

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Abstract

Abstract

The CFG pile-net composite foundation is widely used to reinforce soft soil foundation. The geotechnical centrifugal model tests are carried out to study the deformation characteristics of the CFG pile-net composite foundation under super to large loads in the storage yard of a wharf. The foundation, CFG piles, root piles, reinforced cushion, dust net foundation, track beam foundation and ore loads are simulated in the tests. The variation laws of surface settlement, horizontal displacement of track beam foundation and displacement of foundation profile of the composite foundation are analyzed under super-large loads. The settlement rate of the composite foundation is within the stability control standard, and the settlement meets the requirements of the storage yard. The horizontal displacement and settlement of the dust net foundation and the track beam foundation are small. The settlement component of composite foundation is much larger than the horizontal displacement one. The test results show that the CFG pile-net composite foundation is stable and safe under the load of 350 kPa, and the foundation reinforcement has achieved the expected effects.
- CFG pile-net composite foundation,
- horizontal displacement,
- settlement,
- super-large load,
- centrifugal model test

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