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	Biotechnical means of soil stabilization using willow cuttings
	Xu, Q. J. ; Zhang, L. M. ; Wang, W. C. ; Zhang, Y.
	2010-10-12 ; 2010-10-12
关键词	finite element method loess shear strength simple shear vegetation SHEAR TESTS SAND Ecology Soil Science Water Resources
中文摘要	Foci-is oil the semi-arid and denuded loess plateau in Northwest China has resulted in emergence of biotechnical stabilization methods in response to the occurrence of severe soil erosion and numerous Shallow slope failures. Green cuttings of easy-to-root species such as willow have been installed across a slope, which play an important role in preventing both surface erosion and shallow mass movements. However, the mechanical behavior of the cuttings in sod is not well understood so far. This paper presents a series of large-scale simple shear tests and Finite element simulations of a soil reinforced by willow cuttings. The reinforced soils when subjected to simple shear exhibited strain-hardening behavior and failed along a horizontal plane. The shear strength of the reinforced soil increased with the cutting density and decreased with the soil water content. The finite element analysis, incorporating an elasto-plastic constitutive model for the soil, predicted shear strength parameters for the reinforced soil that agree well with those obtained from the simple shear tests. Significant stress concentrations occurred oil the cuttings while the stresses in the soil were reduced-hence, the reinforced soil could withstand greater loadings.
语种	英语 ; 英语
出版者	SOIL WATER CONSERVATION SOC ; ANKENY ; 945 SW ANKENY RD, ANKENY, IA 50023-9723 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82038]
专题	清华大学
推荐引用方式 GB/T 7714	Xu, Q. J.,Zhang, L. M.,Wang, W. C.,et al. Biotechnical means of soil stabilization using willow cuttings[J],2010, 2010.
APA	Xu, Q. J.,Zhang, L. M.,Wang, W. C.,&Zhang, Y..(2010).Biotechnical means of soil stabilization using willow cuttings..
MLA	Xu, Q. J.,et al."Biotechnical means of soil stabilization using willow cuttings".(2010).

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