IJBTT

Numerical Analysis of the Bearing Capacity of Strip Footing on Reinforced Soil Slope

	International Journal of Engineering Trends and Technology (IJETT)
	© 2015 by IJETT Journal
	Volume-29 Number-6
	Year of Publication : 2015
	Authors : Mohammadreza Hamzehpour Ahmadi, Adel Asakereh
	DOI :  10.14445/22315381/IJETT-V29P258

Citation 

Mohammadreza Hamzehpour Ahmadi, Adel Asakereh"Numerical Analysis of the Bearing Capacity of Strip Footing on Reinforced Soil Slope", International Journal of Engineering Trends and Technology (IJETT), V29(6),313-317 November 2015. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

Abstract
In some projects, such as the foundations of high-rise buildings adjacent the excavation, bridge abutments and tower footings for electrical transmission lines, foundations may be built on a slope. In these cases, the behavior of the mentioned foundation will be affected by the slope. In this study the results of a series of numerical analyses using finite element method on strip footing rested on both reinforced and unreinforced soil slopes were presented. The developed model was validated by some of the existing theories. Afterwards, the parametric studies were performed to determine the geometrical effective parameters and their effects on the behaviour of this type of footing. Results indicated that the bearing capacity of footing can be considerably improved by the inclusion of reinforcing layer and amount of improvement is function of the depth and spacing of reinforcement layers, slope angle and distance of footing from the slope. By evaluate the effect of number of geogrid layers it was found that significant increase in the bearing capacity is occurred by increasing the number of geogrid layers up to four layers.

 References

[1] J. Shiau, R. Merifield, A. Lyamin, and S. Sloan, "Undrained stability of footings on slopes," International Journal of Geomechanics, vol. 11, pp. 381-390, 2011.
[2] K. Terzaghi, Theoretical soil mechanics: Wiley, 1943.
[3] G. Meyerhof, "The ultimate bearing capacity of foudations," Geotechnique, vol. 2, pp. 301-332, 1951.
[4] J. B. Hansen, "A revised and extended formula for bearing capacity," 1970.
[5] Vesic, "Analysis of Ultimate Loads of Shallow Foundations," in Journal of the Soil Mechanics and Foundations Division vol. 99, ed, 1973, pp. 45-73.
[6] G. Meyerhof, "The ultimate bearing capacity of foundations on slopes," in Proc., 4th Int. Conf. on Soil Mechanics and Foundation Engineering, 1957, pp. 384-386.
[7] A. S. Vesic, "Bearing capacity of shallow foundations," Foundation Engineering Handbook., pp. 121-147, 1975.
[8] A. S. Azzouz and M. M. Baligh, "Loaded areas on cohesive slopes," Journal of Geotechnical Engineering, vol. 109, pp. 724-729, 1983.
[9] F. Castelli and E. Motta, "Bearing capacity of strip footings near slopes," Geotechnical and Geological Engineering, vol. 28, pp. 187-198, 2010.
[10] P. d. Buhan and D. Garnier, "Three dimensional bearing capacity analysis of a foundation near a slope," Revue Française de Géotechnique, vol. 38, pp. 153-163, 1998.
[11] K. Georgiadis, "Undrained bearing capacity of strip footings on slopes," Journal of geotechnical and geoenvironmental engineering, vol. 136, pp. 677-685, 2010.
[12] O. Kusakabe, T. Kimura, and H. Yamaguchi, "Bearing capacity of slopes under strip loads on the top surfaces," Soils and foundations, vol. 21, pp. 29–40, 1981.
[13] P. Selvadurai and C. Gnanendran, "An experimental study of a footing located on a sloped fill: influence of a soil reinforcement layer," Canadian Geotechnical Journal, vol. 26, pp. 467-473, 1989.
[14] K. Lee and V. Manjunath, "Experimental and numerical studies of geosynthetic-reinforced sand slopes loaded with a footing," Canadian Geotechnical Journal, vol. 37, pp. 828-842, 2000.
[15] C. Yoo, "Laboratory investigation of bearing capacity behavior of strip footing on geogrid-reinforced sand slope," Geotextiles and Geomembranes, vol. 19, pp. 279-298, 2001.
[16] R. J. Bathurst, J. A. Blatz, and M. H. Burger, "Performance of instrumented large-scale unreinforced and reinforced embankments loaded by a strip footing to failure," Canadian Geotechnical Journal, vol. 40, pp. 1067-1083, 2003.
[17] M. A. El Sawwaf, "Behavior of strip footing on geogridreinforced sand over a soft clay slope," Geotextiles and Geomembranes, vol. 25, pp. 50-60, 2007.
[18] M. S. Keskin and M. Laman, "Experimental and Numerical Studies of Strip Footings on Geogrid-Reinforced Sand Slope," Arabian Journal for Science and Engineering, vol. 39, pp. 1607-1619, 2014.
[19] R. Brinkgreve, Plaxis: finite element code for soil and rock analyses: 2D-Version 8:[user`s guide]: Balkema, 2002.

Keywords
Bearing Capacity, Strip Footing, Reinforced Slope, Numerical Analysis.