Abstract
From the early 1960’s when reinforced earth was introduced by Henri Vidal, much research has been carried out with the aim of estimating the improvement in shear strength of reinforced earth compared to that of unreinforced soil. This paper aims to find the maximum vertical pressure that the soil element can withstand while a lateral pressure is applied to the element. An analytical approach based on the enhanced confining pressure concept as well as some experiments employing triaxial test to determine the ultimate strength of reinforced earth seawalls are proposed. If the soil element is unreinforced, the maximum vertical stress can be easily obtained by multiplying the lateral pressure by the passive pressure coefficient, but for a reinforced element an additional term due to the effects of reinforcement must also be considered. In addition to analytical approach, triaxial tests were performed to examine the behaviour of reinforced and unreinforced sand elements in an undrained fully saturated condition. In conclusion, under low failure pressures (10–20 kPa) the reinforced soil has an internal friction angle higher than that for unreinforced sand, but under higher failure pressures (100 kPa) the internal friction angle of both unreinforced and reinforced sand remains the same.
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References
Bowels, J. E. (1978). Engineering properties of soils and their measurement, 2nd Ed., McGraw-Hill Book Company, New York.
Bowels, J. E. (1979). Physical and geotechnical properties of soils, McGraw-Hill Book, New York.
Chapuis, R. (1972). Rapport de recherche de DEA, Institut de Mecanique de Grenoble (unpublished internal report).
Consoli, N., Casagrande, M., Prietto, P., and Thomé, A. (2003). “Plate load test on fiber-reinforced soil.” Journal of Geotechnical and Geoenvironmental Engineering ASCE, Vol. 129,Issue 10, pp. 951–955.
Fukushima, S., Mochizuki, Y., and Kagawa, K. (1988). “Strength characteristic of reinforced sand in large scale triaxial compression test, in: theory and practice of earth reinforcement.” Proceeding of the International Geotechnical Symposium, Edited by T. Yamanouchi, N. Miura and M. Ochiai, Oct. 1988, Rotterdam, Balkema, pp. 93–98.
Hall, C. D. (1985). “Reinforced soil structures in coastal protection.” Proceeding of Australian Conference on Coastal and Ocean Engineering, Vol. 2, pp. 247–254.
Hausmann, M. R. (1976). “Strength of reinforced soil.” Proceeding of 8 th Australian Road Research Conference, Vol. 8, Sec.13, pp. 1–8.
Hausmann, M. R. (1990). “Engineering principles of ground modification.” McGraw-Hill Publishing Company, New York.
Schlosser, F. and De Buhan, P. (1990). “Theory and design related to the performance of reinforced soil structures, in performance of reinforced soil structures.” Proceeding of the International Reinforced Soil Conference organized by the British Geotechnical Society, Glasgow, Edited by A. McGown, K. Yeo and K. Z. Andrawes, Tomas Telford, London, pp. 1–14.
Vaid, Y. P. and Negussey (1988). “Preparation of reconstituted sand specimens.” Adv. Triaxial Testing of Soil and Rock, ASTM STP 977, Vol. 1988, pp. 405–417.
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Khaniki, A.K., Daliri, F. Analytical and experimental approaches to obtain the ultimate strength of reinforced earth elements. KSCE J Civ Eng 17, 1001–1007 (2013). https://doi.org/10.1007/s12205-013-0181-8
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DOI: https://doi.org/10.1007/s12205-013-0181-8