|Table of Contents|

[1] Abdellatif Boucheloukh, Gong Weiming, Dai Guoliang, Zhu Mingxing, et al. Failure envelope of a caisson foundation under combined vertical, horizontal and moment loadings [J]. Journal of Southeast University (English Edition), 2020, 36 (2): 188-197. [doi:10.3969/j.issn.1003-7985.2020.02.009]

Failure envelope of a caisson foundation under combined vertical, horizontal and moment loadings()

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

2020 2
Research Field:
Civil Engineering
Publishing date:


Failure envelope of a caisson foundation under combined vertical, horizontal and moment loadings
Abdellatif Boucheloukh Gong Weiming Dai Guoliang Zhu Mingxing
School of Civil Engineering, Southeast University, Nanjing 211189, China
caisson foundation failure envelope finite element analysis bearing capacity sandy soil
To investigate the bearing capacity of a caisson foundation under combined vertical, horizontal and moment loadings, the three-dimensional finite element analyses of a circular caisson foundation in homogenous sandy soil subjected to combined loadings are conducted. The caisson model has a depth to breadth ratio equaling one, and a soil-caisson interface friction coefficient μ=0.3. First, the responses of caisson foundations under uniaxial vertical loading V, horizontal loading H and moment loading M are examined. Moreover, the responses of caisson foundations under combined vertical-horizontal V-H, vertical-moment V-M and horizontal-moment H-M load space are studied and presented using normalized failure envelopes generated by the load-controlled method. Subsequently, the bearing behavior of caisson foundations under combined vertical-horizontal-moment V-H-M load space, as well as the kinematic mechanisms accompanying the failure under uniaxial and combined loading, are addressed and presented for different vertical load ratios V/Vu. Finally, three equations that approximate the three-dimensional shape of the failure locus are proposed, which provides a convenient means of calculating the bearing capacity of a caisson foundation subjected to uniaxial and combined vertical, horizontal and moment loadings.


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Biographies: Abdellatif Boucheloukh(1982—), male, Ph.D. candidate; Gong Weiming(corresponding author), male, doctor, professor, wmgong@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No.51808112, 51878160, 51678145), the Natural Science Foundation of Jiangsu Province(No.BK20180155).
Citation: Abdellatif Boucheloukh, Gong Weiming, Dai Guoliang, et al.Failure envelope of a caisson foundation under combined vertical, horizontal and moment loadings[J].Journal of Southeast University(English Edition), 2020, 36(2):188-197.DOI:10.3969/j.issn.1003-7985.2020.02.009.
Last Update: 2020-06-20