Bearing Capacity of a Group of Stone Columns in Soft Soil
Publication: International Journal of Geomechanics
Volume 15, Issue 2
Abstract
Installation of stone column is a viable, cost effective, and environmentally friendly ground-improvement technique. Columns are made of compacted aggregate and are installed in weak soil as reinforcements to increase the shear resistance of the soil mass and, accordingly, its bearing capacity. While a single stone column mostly fails by bulging, a group of stone columns together with the surrounding soil may fail by general, local, or punching shear mechanism, depending on the soil/columns/geometry of the system. The mode of failure of the reinforced ground could be identified based on the ground geometry and strength parameters of both stone column and soft soil. This paper presents an analytical model to predict the bearing capacity of soft soil reinforced with stone columns under rigid raft foundation subject to general shear-failure mechanism. The model utilizes limit-equilibrium method and the concept of composite properties of reinforced soil. The proposed theory was validated for the case of bearing capacity of footings on homogenous soil and via the laboratory and numerical results available in the literature for this case. Design procedure and charts are presented for practicing purposes.
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Acknowledgments
The financial support from the Natural Science and Engineering Research Council of Canada and Concordia University are gratefully acknowledged.
References
Ambily, A. P., and Gandhi, S. R. (2007). “Behavior of stone columns based on experimental and FEM analysis.” J. Geotech. Geoenviron. Eng., 405–415.
Asgari, A., Oliaei, M., and Bagheri, M. (2013). “Numerical simulation of improvement of a liquefiable soil layer using stone column and pile-pinning techniques.” Soil. Dyn. Earthquake Eng., 51(Aug.), 77–96.
Balaam, N. P., and Booker, J. R. (1981). “Analysis of rigid rafts supported by granular piles.” Int. J. Numer. Anal. Methods Geomech., 5(4), 379–403.
Barksdale, R. D., and Bachus, R. C. (1983). “Design and construction of stone columns: Volume 1.” Rep. No. FHWA/RD-83/026, Federal Highway Administration, Washington, DC.
Bouassida, M., de Buhan, P., and Dormieux, L. (1995). “Bearing capacity of a foundation resting on a soil reinforced by a group of columns.” Geotechnique, 45(1), 25–34.
Bouassida, M., and Jellali, B. (2002). “Capacité portante d’un sol renforcé par une tranchée.” Revue Française de Génie Civil, 6(7–8), 1381–1395 (in French).
Bouassida, M., Jellali, B., and Porbaha, A. (2009). “Limit analysis of rigid foundations on floating columns.” Int. J. Geomech., 89–101.
Castro, J., and Karstunen, M. (2010). “Numerical simulations of stone column installation.” Can. Geotech. J., 47(10), 1127–1138.
Chen, W. F. (1975). Limit analysis and soil plasticity, Elsevier, New York.
Deb, K., Basudhar, P. K., and Chandra, S. (2007). “Generalized model for geosynthetic-reinforced granular fill-soft soil with stone columns.” Int. J. Geomech., 266–276.
Egan, D., Scott, W., and McCabe, B. (2009). “Installation effects of vibro replacement stone columns in soft clay.” Geotechnics of soft soils: Focus on ground improvement, M. Karstunen and M. Leoni, eds., CRC Press/Balkema, London, 23–29.
Ellouze, S., Bouassida, M., Hazzar, L., and Mroueh, H. (2010). “On settlement of stone column foundation by Priebe’s method.” Proc. Inst. Civ. Eng. Ground Improv., 163(2), 101–107.
Elshazly, H., Elkasabgy, M., and Elleboudy, A. (2008). “Effect of inter-column spacing on soil stresses due to vibro-installed stone columns: Interesting findings.” Geotech. Geol. Eng., 26(2), 225–236.
Enoki, M., Yagi, N., Yatabe, R., and Ichimoto, E. (1991). “Shearing characteristic of composite ground and its application to stability analysis.” Deep foundation improvements: Design, construction, and testing, M. I. Esrig and R. C. Bachus, eds., ASTM, West Conshohocken, PA, 19–31.
Fattah, M. Y., Shlash, K. T., and Al-Waily, M. J. M. (2011). “Stress concentration ratio of model stone columns in soft clays.” ASTM Geotech. Test. J., 34(1), 1–11.
Frydman, S., and Burd, H. J. (1997). “Numerical studies of bearing-capacity factor .” J. Geotech. Geoenviron. Eng., 20–29.
Han, J., and Ye, S. L. (2002). “A theoretical solution for consolidation rates of stone column-reinforced foundations accounting for smear and well resistance effects.” Int. J. Geomech., 135–151.
Hanna, A. M., Etezad, M., and Ayadat, T. (2013). “Mode of failure of a group of stone columns in soft soil.” Int. J. Geomech., 87–96.
Hassen, G., de Buhan, P., and Abdelkrim, M. (2010). “Finite element implementation of a homogenized constitutive law for stone column-reinforced foundation soils, with application to the design of structures.” Comput. Geotech., 37(1–2), 40–49.
Hassen, G., Gueguin, M., and de Buhan, P. (2013). “A homogenization approach for assessing the yield strength properties of stone column reinforced soils.” Eur. J. Mech. A, Solids, 37(Jan.–Feb.), 266–280.
Hijab, W. A. (1956). “A note on the centroid of a logarithmic spiral sector.” Geotechnique, 6(2), 66–69.
Hu, W. (1995). “Physical modeling of group behavior of stone column foundations.” Ph.D. dissertation, Univ. of Glasgow, Glasgow, U.K.
Hu, W., Wood, D. M., and Stewart, W. (1997). “Ground improvement using stone column foundations: Result of model tests.” Proc., Int. Conf. on Ground Improvement Technology, CI-Premier, Singapore, 247–256.
Hughes, J. M. O., and Withers, N. J. (1974). “Reinforcing of soft cohesive soils with stone columns.” Ground Eng., 7(3), 42–49.
Indraratna, B., Basack, S., and Rujikiatkamjorn, C. (2013). “Numerical solution of stone column–improved soft soil considering arching, clogging, and smear effects.” J. Geotech. Geoenviron. Eng., 377–394.
Kaliakin, V. N., Khabbazian, M., and Meehan, C. L. (2012). “Modeling the behavior of geosynthetic encased columns: Influence of granular soil constitutive model.” Int. J. Geomech., 357–369.
Kumbhojkar, A. S. (1993). “Numerical evaluation of Terzaghi’s .” J. Geotech. Engrg., 598–607.
Lee, J. S., and Pande, G. N. (1998). “Analysis of stone-column reinforced foundations.” Int. J. Numer. Anal. Methods Geomech., 22(12), 1001–1020.
Madhav, M. R., and Vitkar, P. P. (1978). “Strip footing on weak clay stabilized with a granular trench or pile.” Can. Geotech. J., 15(4), 605–609.
McCabe, B. A., Nimmons, G. J., and Egan, D. (2009). “A review of field performance of stone columns in soft soils.” Proc. Inst. Civ. Eng. Geotech. Eng., 162(6), 323–334.
McKelvey, D., Sivakumar, V., Bell, A., and Graham, J. (2004). “Modelling vibrated stone columns in soft clay.” Proc. Inst. Civ. Eng. Geotech. Eng., 157(3), 137–149.
Mitchell, J. K., and Katti, R. K. (1981). “Soil improvement state-of-the-art report.” Proc., 10th Int. Conf. on Soil Mechanics and Foundation Engineering, Vol. 4, Balkema, Rotterdam, Netherlands, 509–565.
Mokhtari, M., and Kalantari, B. (2012). “Soft soil stabilization using stone columns—A review.” Electronic J. Geotech. Eng., 17, 1659–1666.
Muir Wood, D., Hu, W., and Nash, D. F. T. (2000). “Group effects in stone column foundations: Model tests.” Geotechnique, 50(6), 689–698.
Najjar, S. S. (2013). “A state-of-the-art review of stone/sand-column reinforced clay systems.” Geotech. Geol. Eng., 31(2), 355–386.
Priebe, H. J. (1995). “The design of vibro replacement.” Ground Eng., 28(10), 31–37.
Priebe, H. J. (2005). “Design of vibro replacement.” Ground Eng., 38(1), 25–27.
Shahu, J. T., and Reddy, Y. R. (2011). “Clayey soil reinforced with stone column group: Model tests and analyses.” J. Geotech. Geoenviron. Eng., 1265–1274.
Silvestri, V. (2003). “A limit equilibrium solution for bearing capacity of strip foundations on sand.” Can. Geotech. J., 40(2), 351–361.
Six, V., Mroueh, H., Shahrour, I., and Bouassida, M. (2012). “Numerical analysis of elastoplastic behavior of stone column foundation.” Geotech. Geol. Eng., 30(4), 813–825.
Soubra, A.-H. (1999). “Upper-bound solutions for bearing capacity of foundations.” J. Geotech. Geoenviron. Eng., 59–68.
Stuedlein, A. W., and Holtz, R. D. (2013). “Bearing capacity of spread footings on aggregate pier reinforced clay.” J. Geotech. Geoenviron. Eng., 49–58.
Stuedlein, A. W., and Holtz, R. D. (2014). “Displacement of spread footings on aggregate pier reinforced clay.” J. Geotech. Geoenviron. Eng., 36–45.
Tan, S. A., Tjahyono, S., and Oo, K. K. (2008). “Simplified plane-strain modeling of stone-column reinforced ground.” J. Geotech. Geoenviron. Eng., 185–194.
Terzaghi, K. (1943). Theoretical soil mechanics, Wiley, New York.
Vesic, A. S. (1973). “Analysis of ultimate loads of shallow foundations.” J. Soil Mech. and Found. Div., 99(1), 45–73.
Visual Basic 6 [Computer software]. Redmond, WA, Microsoft.
Weber, T. M., Plotze, M., Laue, J., Peschke, G., and Springman, S. M. (2010). “Smear zone identification and soil properties around stone columns constructed in-flight in certrifuge model tests.” Geotechnique, 60(3), 197–206.
Wehr, W. (1999). “Schottersäulen – das Verhalten von einzelnen Säulen und Säulengruppen.” Geotechnik, 22(1), 40–47 (in German).
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© 2014 American Society of Civil Engineers.
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Received: Sep 20, 2012
Accepted: Feb 18, 2014
Published online: Feb 20, 2014
Published in print: Apr 1, 2015
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