Reasonable selection of yield criteria for quantitative analysis of unsaturated soil slope stability

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2016 > Vol13 No.7

	Reasonable selection of yield criteria for quantitative analysis of unsaturated soil slope stability
	LIU Zi-zhen; YAN Zhi-xin; REN Zhi-hua; QIU Zhan-hong; DUAN Jian
刊名	Journal of Mountain Science
	2016-07
卷号	13 期号:7 页码:1304-1312
关键词	Unsaturated soil slope Yield criteria Parameter transformation Rainfall Safety factor
ISSN号	1672-6316
通讯作者	YAN Zhi-xin
英文摘要	The yield criterion parameters of the soil material change with different values of the cohesion and the angle of frictionbecause of sustained rainfall infiltration. Based on the Mohr-Coulomb (M-C) and Drucker-Prager (D-P) yield criteria, some reasonable yield criteria selections were discussed for quantitative analysis of unsaturated soil slope stability. Moreover, a critical point was found at the effective angle of friction equaling to 16.5° by transformation of parameters related to unsaturated soil under sustained rainfall. When the effective angle of friction more than 16.5°through parameter transformation of different yield criteria under natural condition, the calculation result of the safety factor was such that: f(DP1) > f(M-C) > f(equivalent M-C) > f(DP2) > f(DP3). While the effective angle of friction less than 16.5° , through parameter transformation, the safety factors were in the following order: f(DP1) > f(M-C) > f(DP2) > f(equivalent M-C) > f(DP3). The calculated results from a case study showed that the equivalent M-C yield criterion should be the best at evaluating soil slope stability before rainfall; the DP2 yield criterion should be selected to calculate the soil slope stability at the effective angle of friction less than 16.5°under sustained rainfall. The yield criterion should be selected or adjusted reasonably to calculate the safety factor of unsaturated soil slopes before and during sustained rainfall.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/17267]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2016_Vol13 No.7
推荐引用方式 GB/T 7714	LIU Zi-zhen,YAN Zhi-xin,REN Zhi-hua,et al. Reasonable selection of yield criteria for quantitative analysis of unsaturated soil slope stability[J]. Journal of Mountain Science,2016,13(7):1304-1312.
APA	LIU Zi-zhen,YAN Zhi-xin,REN Zhi-hua,QIU Zhan-hong,&DUAN Jian.(2016).Reasonable selection of yield criteria for quantitative analysis of unsaturated soil slope stability.Journal of Mountain Science,13(7),1304-1312.
MLA	LIU Zi-zhen,et al."Reasonable selection of yield criteria for quantitative analysis of unsaturated soil slope stability".Journal of Mountain Science 13.7(2016):1304-1312.