Influence of Sidewall Friction on the Results of Small-Scale Laboratory Model Tests: Numerical Assessment
by P. K. Jayasree, Ph.D., (corresponding author), (Assistant Professor, Dept. of Civil Engineering, College of Engineering Trivandrum, Thiruvananthapuram 695 008, Kerala, India. E-mail: jayasreepk@yahoo.com), K. Rajagopal, Ph.D., (Professor, Dept. of Civil Engineering, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India. E-mail: gopalkr@iitm.ac.in), and C. T. Gnanendran, Ph.D., (Senior Lecturer, School of Engineering and Information Technology, Univ. of New South Wales at the Australian Defence Force Acedemy, Northcott Drive, Canberra, ACT 2600, Australia. E-mail: r.gnanendran@adfa.edu.au)
International Journal of Geomechanics, Vol. 12, No. 2, March/April 2012, pp. 119-126, (doi: http://dx.doi.org/10.1061/(ASCE)GM.1943-5622.0000120)
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| Document type: |
Journal Paper |
| Abstract: |
Laboratory model tests in geotechnical engineering are routinely performed in small concrete or steel test tanks to examine the bearing capacity of footings, lateral earth pressures on retaining walls, behavior of reinforced foundation soils, and more. Results from these model tests are influenced by the shear forces generated on the sidewalls. The influence of such extraneous forces may completely change the interpretation of the test results or the failure mechanism. This paper presents a methodology for assessing the influence of such sidewall forces through numerical simulations. Through systematic numerical simulations, the influence of factors such as the relative size of the test tank, soil properties, and sidewall properties as investigated. The influence of sidewall friction and relative size of the test tank on the results as also investigated. Sidewall friction was found to a lesser effect for a wider test tank or for soil with a greater friction angle. Some recommendations on the relative tank sizes are also made on the basis of the results of this investigation. |
| Author Keywords: | 
| Sidewall friction |
| Bearing capacity |
| Lateral earth pressure |
| Three-Dimensional analysis |
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