[1] Zhang Zhitong, Gong Weiming, Xie Jiang, et al. Probabilistic limit state design methodof the axial resistance of post grouting pile [J]. Journal of Southeast University (English Edition), 2022, 38 (2): 166-170. [doi:10.3969/j.issn.1003-7985.2022.02.008]

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Probabilistic limit state design methodof the axial resistance of post grouting pile()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

38

Issue:

2022 2

Page:

166-170

Research Field:

Mathematics, Physics, Mechanics

Publishing date:

2022-06-20

Info

Title:

Probabilistic limit state design methodof the axial resistance of post grouting pile

Author(s):

Zhang Zhitong¹;  2;  Gong Weiming¹;  2;  Xie Jiang¹;  2;  Dai Guoliang¹;  2;  Su Wei³;  Qiao Jinfei³

¹Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 211189, China
²School of Civil Engineering, Southeast University, Nanjing 211189, China
³China Railway Design Corporation, Tianjin 300308, China

Keywords:

probabilistic limit state design method;  reliability theory;  post grouting pile;  total resistance partial coefficient

PACS:

TB114.3

DOI:

10.3969/j.issn.1003-7985.2022.02.008

Abstract:

The reliability of post grouting pile axial resistance was studied by proposing a design method for its probabilistic limit state, which is represented by the partial coefficients of load, end, and side resistance. The hyperbolic, modified hyperbolic, and polynomial models were employed to predict the ultimate bearing capacity of test piles that were not loaded to damage in field tests. The results were used for the calculation and calibration of the reliability index. The reliability of the probabilistic limit state design method was verified by an engineering case. The results show that the prediction results obtained from the modified hyperbolic model are closest to those obtained through the static load test. The proposed corresponding values of total, side, and end resistance partial coefficients are 1.84, 1.66, and 2.73 when the dead and live load partial coefficients are taken as 1.1 and 1.4, respectively. Meanwhile, the corresponding partial coefficients of total, side, and end resistance are 1.70, 1.56, and 2.34 when the dead and live load partial coefficients are taken as 1.2 and 1.4, respectively.

References:

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Memo

Memo:

Biographies: Zhang Zhitong(1992—), male, Ph.D. candidate; Gong Weiming(corresponding author), male, doctor, professor, Wmgong@seu.edu.cn.
Foundation item: The National Natural Science Foundation of China(No. 51878160, 52008100, 52078128).
Citation: Zhang Zhitong, Gong Weiming, Xie Jiang, et al. Probabilistic limit state design method of the axial resistance of post grouting pile[J].Journal of Southeast University(English Edition), 2022, 38(2):166-170.DOI:10.3969/j.issn.1003-7985.2022.02.008.

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