Comparative analysis of bearing capacity of CFG single pile by centrifugal model tests and field tests

WANG Nian-xiang; LIU Chao; LIN Xian-cai; CAO Chang-hao; LIAN Chang-qiu

doi:10.11779/CJGE2022S2002

Volume 44 Issue S2

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Chinese Journal of Geotechnical Engineering > 2022 > 44(S2): 6-10. > DOI: 10.11779/CJGE2022S2002

WANG Nian-xiang, LIU Chao, LIN Xian-cai, CAO Chang-hao, LIAN Chang-qiu. Comparative analysis of bearing capacity of CFG single pile by centrifugal model tests and field tests[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(S2): 6-10. DOI: 10.11779/CJGE2022S2002

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Comparative analysis of bearing capacity of CFG single pile by centrifugal model tests and field tests

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.
Zhanjiang Port (Group) Co. LTD, Zhanjiang 524068, China
4.
Guangdong Province Planning and 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

For the soft soil foundation slipped in the storage yard of a wharf, the composite foundation with CFG pile net is used for reinforcement in typical zone. The centrifugal model tests and field static load tests are carried out to study the bearing behavior of CFG pile. The bearing deformation difference of single pile between the centrifugal model tests and the field static load tests is compared and analyzed. The test results of the vertical ultimate bearing capacity of single pile are compared with the calculated ones by the method recommended by China's technical code for composit foundation. The results show that there are obvious differences between the Q-s curves of the centrifugal model tests and field static load tests. The ultimate bearing capacity of single pile of the centrifugal model tests is greater than that of the field static load tests, and their maximum test loads are basically the same. The calculated values of the vertical ultimate bearing capacity of single pile are lower than those of the centrifugal model tests and field static load tests.
- CFG pile,
- bearing capacity of single pile,
- centrifugal model test,
- field static load test

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