Model tests were conducted to investigate the behavior of a special-shaped pile group (2×1, and 2×2) and a single pile under uplift loading. A theoretical method was developed to estimate the ultimate uplift capacity of the special-shaped pile group based on a unified composite failure surface. The method was validated by the current model test results and those published in the previous literatures. The predicted uplift capacities generally agree well with the measured test results, showing that the method is suitable for the estimation of uplift capacity of both special-shaped pile groups and equal diameter pile groups.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
V.N. Golubkov, N.L. Morgulis, and V.F. Nikitin, "Tapered-pile foundations with intermediate cushion," Soil Mech. Found. Eng., 14, No. 5, 331-334 (1977).
S.M. Aleynikov and M. Sergey, "Calculation of bases for rigid complex-shaped deepened foundations according to the second limiting state in a three-dimensional formulation," Spatial Contact Problems in Geotechnics. Springer Berlin Heidelberg, 385-504 (2010).
G.Q. Kong, Q. Yang, H.L. Liu, and R.Y. Liang, "Numerical study of a new belled wedge pile type under different loading modes," Eur. J. Environ. Civ. En., 17, 65-82 (2013).
People's Republic of China Ministry of Construction, Technical code for building pile foundations (JGJ94-2008) [in Chinese], China Building Industry Press, Beijing (2008).
M.S. Huang, X.J. Wang, J.B. Wu, and W.D. Wang, "Unified approach to estimate ultimate bearing capacity of uplift piles with enlarged base," Chin. J. Geotech. Eng., 33, No. 1, 63-68 (2011).
K. Shanker, P.K. Basudhar, and N.R. Patra, "Uplift capacity of pile groups embedded in sands: Predictions and performance." Soils Found., 46, No. 5, 605-612 (2006).
J.H. Zhang and H.H. Zhu, "An empirical-theoretical calculation method and full-scale verification test for the ultimate bearing capacity of an expanded pedestal uplift pile," Mod. Tunn. Tech., 51, No. 6, 50-57 (2014).
W.D. Wang, J.B. Wu, L. Xu, and S.M. Huang, "Full-scale field tests on uplift behavior of piles with enlarged base," Chin. J. Geotech. Eng., 29, No, 9, 1418-1422 (2007).
R. Nazir, H. Moayedi, A. Pratikso, and M. Mosallanezhad, "The uplift load capacity of an enlarged base pier embedded in dry sand," Arab. J. Geosci., 8, No. 9, 7285-7296 (2015).
A.S. Farokhi, H. Alielahi, and Z. Mardani, "Optimizing the performance of under-reamed piles in clay using numerical method," Electron. J. Geotech. Eng., 19, 1507-1520 (2014).
N.P. Kurian and G. Srilakshmi, "Studies on the geometrical features of under-reamed piles by the finite element method," J. Karunya Univ., 2, No. 1, 1-14 (2010).
Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 4, p. 27, July-August, 2018.
About this article
Cite this article
Kong, G.Q., Zhou, L.D., Gu, H.W. et al. An Approach for Capacity Calculation of Shaped Pile Group Under Uplift Load. Soil Mech Found Eng 55, 270–276 (2018). https://doi.org/10.1007/s11204-018-9536-y