NUMERICAL ANALYSIS OF CONTROLLED MODULUS COLUMN FOUNDATION SYSTEM SUPPORTED EMBANKMENTS
Main Article Content
Abstract
The objective of this research is to present the numerical analysis of deep foundation system namely controlled modulus columns (CMC) for support of embankments. This paper describes the analysis modeling used for CMC foundation system using the finite element method. The elasto-plastic finite element model used to simulate the embankment soil foundation has been verified against field data. The results obtained from this study showed that the effect of CMC could be negligible when the soil strength increased in terms of its angle of internal friction. With low values of internal friction angle, the CMC reduce the potential of surface deformation about 12%. The values of surface deformation decreased with column diameter until it reach constant value at (0.5m) where less than this values the reduction in deformation could be negligible or have insignificant effect. The maximum deformation was observed at the middle of embankment, also the deformation at the embankment foundation reduce by about (17%) when take into consideration the CMC in soil embankment foundation.
Article Details
How to Cite
Publication Dates
References
. Andrawes, K.Z, McGown, A. , Mashhour, M.M , and Wilson-Fahmy, R.F. (1980): “Tension Resistance Inclusions in Soils” . Journal of Geotechnical Engineering Division, ASCE , 106, GT(12):1313-1326.
. Han, J., and Gabr, M.A. (2002): “Numerical Analysis of Geosynthetic-Reinforced and Pile-Supported Earth Platform over Soft Soil”. Journal of Geotechnical and Geoenvironmental Engineering, 44-53.
. Hird, C.C, Pyrah , I.C., and Russell, D. (1992): “Finite Element Modeling of Vertical Drains beneath Embankments on Soft Ground”. Geotechnique, 42(3):499-511.
. Indraratna, B., Balasubramaniam, A.S. ,and Balachandran, S. (1992): “Performance on Test Embankment Constructed to Failure on Soft marine Clay”. ASCE Journal of Geotechnical Engineering, 118(1):12-33.
. Li, A.L., and Rowe, R.K. (2002): “Design Consideration for Embankmentson Ratem Sensitive Soils”. ASCE Journal of Geotechnical and Geoenvironmental Engineering, 128(11): 885-897.
. Neher, H., and Cudny, M. (2003): “Numerical Analysis of Test Embankment on Soft Ground using An anistropic Model with Destructuration” . Institute of Geotechnical Engineering, University of Stuttgart, Germany.
. Porbaha, A., Brown, D., Macnab,A.,Short, R. (2002a): “Innovative European Technologies to Accelerate Construction of Embankment Foundations- Part l” . Proceedings of Time Factor in Design and Construction of Deep Foundations, Deep
Foundation Institute, San Diego, C.A., 3-14.
. Porbaha, A., Brown, D., Macnab,A.,Short, R. (2002b): “Innovative European Technologies to Accelerate Construction of Embankment Foundations- Part 2” . Proceedings of Time Factor in Design and Construction of Deep Foundations, Deep
Foundation Institute, San Diego, C.A., 15-28.
. Smith, I.M., and, Griffiths, D.V. (1998): “Programming the Finite Element Method”. Second Edition, John Wiley and Sons Ltd.
. Manivannan, G. (2005): “Viscoplastic Modeling of Embankment on Soft Soils”. Ph.D Thesis, University of New South Wales.