Centrifugal model tests on reinforcement effects of root pile-net composite foundation in slip zone

WANG Nian-xiang; ZHOU Chun-er; WU Jia-wu; JIANG Wen-bo; ZHANG De-en

doi:10.11779/CJGE2022S2023

Volume 44 Issue S2

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Chinese Journal of Geotechnical Engineering > 2022 > 44(S2): 107-111. > DOI: 10.11779/CJGE2022S2023

WANG Nian-xiang, ZHOU Chun-er, WU Jia-wu, JIANG Wen-bo, ZHANG De-en. Centrifugal model tests on reinforcement effects of root pile-net composite foundation in slip zone[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(S2): 107-111. DOI: 10.11779/CJGE2022S2023

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Centrifugal model tests on reinforcement effects of root pile-net composite foundation in slip zone

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 and Design Institute for Water Transpotation Co. LTD, Guangzhou 510050, China

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Received Date: November 30, 2022
Available Online: March 26, 2023

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Abstract

Abstract

For the slipped soft soil foundation in the storage yard of a wharf, the root pile-net composite foundation is used for reinforcement. The geotechnical centrifugal model tests are carried out to study the deformation and pile-soil stress characteristics of the root pile-net composite foundation under super-large loads. The foundation, root piles, reinforced cushions, dust nets, track beam foundation and ore loads are simulated. The variation laws of deformations and loads at the top of the root piles, the earth pressures between the root piles and the pile-soil stress ratio of the composite foundation are analyzed under super-large loads. The settlement of the composite foundation meets the requirements of the storage yard. The horizontal displacements and settlements of the dust net foundation and the track beam foundation are small. The pile-soil stress ratio is 60~69. The test results show that the root pile-net composite foundation in the slip zone is stable and safe under the load of 350 kPa, and the foundation reinforcement has achieved the expected effects.
- root pile-net composite foundation,
- slipped foundation,
- reinforcement effect,
- super-large load,
- centrifugal model test

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References

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