Stress Analyses of Strip and Rectangular Footings Rested on Loose Sands

Year 2017, Volume: 2 Issue: 3, 93 - 112, 30.10.2017

Yakup Türedi Murat Örnek

https://doi.org/10.28978/nesciences.349298

Abstract

In this study, the stress, the bearing capacity and the settlement behavior in the loose sandy soils were investigated experimentally and theoretically. The study was performed in central loading conditions using strip and rectangular footings. The vertical stresses resulting from the external are measured for three different distances simultaneously. And also the load-settlement curves were obtained. The results showed that the bearing capacity increases when the length of the footing increases and the measured vertical stress values decrease along the depths for all the three types of the footing types. The test results were compared with theoretical results given in the literature. As seen from this comparison, the experimental results are in accordance with the theoretical results.

Keywords

Model Tests, Soil Stress, Strip Footing, Rectangular Footing

References

• Bagriacik, B., (2010). Experimental and theoretical analyses of the stress conditions of soils. MSc Thesis, Cukurova University, Adana.
• Bagriacik, B. & Laman M. (2010). Investigation of the effect of shallow foundation geometry on soil stress distribution. Cukurova University, Journal of the Faculty of Engineering and Architecture, 25(1-2), 155-166.
• Bagriacik, B. & Laman M. (2011). Distribution Of Stresses In Unreinforced And Reinforced Soils Induced By A Circular Foundation. Cukurova University, Journal of the Faculty of Engineering and Architecture, 26(4), 787-800.
• Bhaskar D.R.C., Shukla S.J. and Dinesh S. (2015). A numerical study of foundation depth on contact stresses and settlements for various sub soils. 50th Indian Geotechnical Conference 17th – 19th December 2015, Pune, Maharashtra, India.
• Bowles, J.E. (1996).Foundation analysis and design. 5th ed., McGraw Hill, Ney York, NY, USA.
• Cho, S., & Vipulanandan, C. (1998). Verification of stress distribution in a soil box. CIGMAT-Department of Civil and Environmental Engineering University of Houston, Texas, 77204-4003.
• Donath, A.D. (1891). Untersuchungen veber den erddruck auf stuetzwaende. Zeitschrift für Bauwesen, Berlin, Germany.
• Dixit M. S. & Patila K. A. (2013). Experimental estimate of Nγ values and corresponding settlements for square footings on finite layer of sand. Geomechanics and Engineering, 5 (4), 363-377.
• Hanna, A.M., & Soliman-Saad, N. (2001). Effect of compaction duration on the induced stress levels in a laboratory prepared sand bed. Geotechnical Testing Journal, 24(4), 430-438.
• Hazzard, J. F., Yacoub T. E., Vijayakumar S. & Curran J. H. (2007). Stresses under footings in multilayered soils: a comparative study. Bearing Ground in the Nation’s Capital, Ottowa.
• Jaky, J. (1948). Pressure in soils. Proc. 2nd Conf. on Soil Mechanics and Foundation Engineering. A. A. Balkema, Rotterdam, the Netherlands, 1, 103-107.
• Kayadelen, C., (2005). Investigation of lateral earth pressures in K0 condition for unsaturated fine grained soils”, PhD Thesis, Cukurova University, Adana.
• Keskin, M.S. (2004). Stress analysis of soils with various methods. MSc Thesis, Cukurova University, Adana. Keskin, M.S. &, Laman M. (2014). Experimental study of bearing capacity of strip footing on sand slope reinforced with tire chips”, Geomechanics and Engineering, 6(3), 249-262.
• Mohamed A. K. (2012). Numerical study for the behavior of strip footing on sand in the existence of a buried rock. Journal of Engineering Sciences, Assiut University, 40(6), 1611-1624 .
• Ornek, M. (2014). Estimation of ultimate loads of eccentric-inclined loaded strip footings rested on sandy soils. Neural Computing and Applications, 25, 39-54.
• Saran, S., Kumar, S., Garg, K.G. & Kumar, A. (2007). Analysis of square and rectangular footings subjected to eccentric-inclined load resting on reinforced sand. Journal of Geotechnical and Geoenvironmental Engineering, 25, 123-137.
• Terzaghi, K. (1920). Old earth pressure theories and new test results. Engrg. News-Rec., 85(14), 632-637. Uzuner, B.A. (1975). Centrally and eccentrically loaded strip foundations on sand. PhD Thesis, University of Strathclyde, Glasgow, UK.
• Yang K.H., Zornberg J. G., Liu C.N., & Lin H.D. (2012). Stress distribution and development within geosynthetic-reinforced soil slopes. Geosynthetics International, 19(1), 62-78.
• Yodsa-nga P., Gasaluck W. & Punrattanasin P. (2012). Stress distribution in khon kaen loess under spread footing. The Electronic Journal of Geotechnical Engineering, 17, 3753-3769.