Abstract
The calculation of residual settlement of bidirectional reinforced composite foundation, which is composed of geocell cushion over gravel piles, was studied. The geocell cushion was modeled as a thin flexible plate with large deflection. Based on the Kirchhoff hypothesis, the governing differential equations and boundary conditions of the deformation of geocell cushion under working load were founded using von Karman method and solved by Galerkin method. On theses bases, the gravel piles and inter-pile soils were assumed as Winkler ground with variable spring stiffness so as to execute the approximate calculation of the residual settlement of the bidirectional reinforced composite foundation. The calculation method was verified by two laboratory experiments concerning settlement of embankments. One experiment was with just geocell cushion installed to treat the soft clay under embankments; another one was with both geocell cushion and gravel piles installed. The results show that the calculated settlement curve and the maximum settlement are closed to the observed ones.
Similar content being viewed by others
References
WHYTE D. The overriding aspects of the design of geosynthetic-reinforced pile supported embankments[C]// Proceedings of Contemporary Issues in Foundation Engineering. New York: ASCE Publications, 2005: 29–41.
CHEW S H, PHOON H L, LOKE K H, LIM L K. Geotextile reinforced piled embankment for highway bridges[C]// Proceedings of 8th International Conference on Applications of Advanced Technologies in Transportation Engineering. New York: ASCE Publications, 2004: 438–443.
STEWART M E, FILZ G M. Influence of clay compressibility on geosynthetic loads in bridging layers for column-supported embankments[C]// Proceedings of Contemporary Issues in Foundation Engineering. New York: ASCE Publications, 2005: 11–25.
REINALDO V M, SHAO Y. Geogrid-reinforced and pile-supported roadway embankment[C]// Proceedings of Contemporary Issues in Foundation Engineering. New York: ASCE Publications, 2005: 26–28.
CHENG C F, YANG Y. Research on bearing capacity of geosynthetic-reinforced and pile-supported earth platforms over soft soil and analysis of its affecting factors[C]// Proceedings of the GeoShanghai International Conference 2006. New York: ASCE Publications, 2006: 115–123.
HAN J, COLLIN J G. Geosynthetic support system over pile foundations[C]// Proceedings of the 18th Geosynthetic Research Institute (GRI) Conference: Geosynthetic Research and Development in Progress. New York: ASCE Publications, 2005: 24–26.
HAN J, WAYNE M H. Pile-soil-interactions in geosynthetic reinforced platform/piled embankments over soft soil[C]// Rep. No.000777, Presentation and CD-Print at 79th Annual Transportation Research Board Meeting. Washington, D.C.: Transportation Research Board of the National Academies, 2000.
ALZAMORA D, WAYNE M H, HAN J. Performance of SRW supported by geogrids and jet grout columns[C]// Proceedings of ASCE Specialty Conference on Performance Confirmation of Constructed Geotechnical Facilities. New York: ASCE Publications, 2000: 456–466.
HAN J. Design and construction of embankments on geosynthetic reinforced platforms supported by piles[C]// Proceedings of 1999 ASCE/PaDOT Geotechnical Seminar, Central Pennsylvania Section, ASCE and Pennsylvania Department of Transportation. Hershey: ASCE Publications, 1999: 66–84.
HAN J, AKINS K. Case studies of geogrid-reinforced and pile-supported earth structures on weak foundation soils[C]// Proceedings of International Deep Foundation Congress. Orlando: ASCE Publications, 2002: 668–679.
ZHANG L, ZHAO M H, HE W. Working mechanism of two-direction reinforced composite foundation[J]. J Cent South Univ Technol, 2007, 14(4): 589–594.
HAN J, HUANG J, PORBAHA A. 2D numerical modeling of a constructed geosynthetic-reinforced embankment over deep mixed columns[C]// Proceedings of Contemporary Issues in Foundation Engineering. New York: ASCE Publications, 2005: 52–62.
HAN J, GABR M A. Numerical analysis of geosynthetic-reinforced and pile-supported earth platforms over soft soil[J]. ASCE, Journal of Geotechnical and Geoenvironmental Engineering, 2002, 128(1): 44–53.
RAO W G, JIANG H H, HOU Q H. Deformation of sheet plate due to residual settlement of pile-net composite foundation[J]. Chinese Journal of Hydraulic Engineering, 2002, 20(4): 23–27. (in Chinese)
QU Q Z, LIANG X F. Nonlinear bending of rectangular plates with four free edges on elastic foundation[J]. Chinese Journal of Civil Engineering, 1995, 28(1): 46–54. (in Chinese)
ZAI J M, ZAI J Z. Foundation analysis for tall buildings[M]. Beijing: China Architecture and Building Press, 1993. (in Chinese)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Chen, Cf., Yang, Y., Xiao, Sj. et al. Residual settlement calculation of geocell cushion over gravel piles. J. Cent. South Univ. Technol. 15 (Suppl 2), 21–27 (2008). https://doi.org/10.1007/s11771-008-0430-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11771-008-0430-z