Model tests on reinforced sloped embankment with denti-strip inclusions under monotonic loading
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Denti-strip inclusion is a new type reinforcement that consists of conventional strip type reinforcement and vertical inclusions which are installed on the strip in spacing. A series of laboratory model tests were carried out on a physical model of reinforced sloped embankment with strip inclusions and denti-strip inclusions under surcharge. Compared with strip reinforcement, it is found that due to the existence of vertical reinforcing elements which provided passive resistances against shearing and enhanced soil strength, denti-strip inclusions are more effective in improving the ultimate surcharge, reducing the settlement and restricting the lateral displacement of the slope. Furthermore, the shear bands in the embankment reinforced with two-layer inclusions under the condition without cutting of reinforcements are separated into several discontinuous arc bands by the inclusions unlike the single continuous arc in unreinforced embankment; the inclination angles of the shear bands are greater than that of unreinforced embankment and the position of the lower arc is close to the mid-height of embankment.
Keywordsdenti-strip inclusion reinforced slope model test ultimate surcharge failure surface
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- Bergado, D. T., Long, P. V., Lee, C. H., Loke, K. H., and Werner, G. (1994). “Performance of reinforced embankment on soft Bangkok clay with high-strength geotextile reinforcement.” Geotextiles and Geomembranes, Vol. 13, Nos. 6–7, pp. 403–420, DOI: 10.1016/0266-1144(94)90005-1.CrossRefGoogle Scholar
- Zhang, M. X., Zhang, S. L., Huang, J., and Javadi, A. A. (2008a). “Ultimate pullout forces of orthogonally horizontal-vertical geosynthetic reinforcement.” Proceedings of the 5th International Symposium on Earth Reinforcement (IS Kyushu 07), Fukuoka Japan, pp. 289–292.Google Scholar
- Zhang, M. X., Zhou, H., Javadi, A. A. and Wang, Z. W. (2008b). “Experimental and theoretical investigation of strength of soil reinforced with multi-layer horizontal-vertical orthogonal elements.” Geotextiles and Geomembranes, Vol. 26, No. 1, pp. 1–13 DOI: 10.1016/j.geotexmem.2007.06.001.CrossRefzbMATHGoogle Scholar