Stability analysis of multistage homogeneous loess slopes by improved limit equilibrium method

doi:10.16285/j.rsm.2020.0893

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Stability analysis of multistage homogeneous loess slopes by improved limit equilibrium method
	Zhang, Rui-Huan 1,2; Ye, Shuai-Hua 1,2; Tao, Hui 3
刊名	Yantu Lixue/Rock and Soil Mechanics
	2021-03-10
卷号	42 期号:3 页码:813-825
关键词	Failure modes Numerical methods Safety factor Sediments Slope stability Critical slip surface Engineering applications Limit equilibrium methods Minimum safety factor Optimization method Relative deviations Stability analysis Systematic analysis method
ISSN号	1000-7598
DOI	10.16285/j.rsm.2020.0893
英文摘要	Aiming at the stability analysis of multistage homogeneous loess slopes, a systematic analysis method is proposed. Firstly, the possible failure mechanisms such as slope toe circle and midpoint circle under the overall failure mode and local failure mode of multistage loess slopes are established. Then, based on the improved limit equilibrium method, an analytical solution of slope safety factor corresponding to each failure mechanism is derived, and the optimization method is used to determine the minimum value of safety factor corresponding to each failure mechanism under the overall and the local failure modes. Finally, the flowchart of systematically performing multistage loess slope stability analysis is put forward to determine the minimum safety factor and the critical slip surface. The results of numerical examples show that the proposed method are comparative to the traditional stripe method. The relative deviation of the minimum safety factor calculated by the two methods is less than 5%, and the critical slip surfaces determined by the two methods agree to each other very well. The proposed method in this paper can be widely applied to various multistage homogeneous loess slopes and even single-stage slopes, which is promising for engineering applications. © 2021, Science Press. All right reserved.
WOS研究方向	Engineering
语种	中文
出版者	Biodiversity Research Center, Academia Sinica
WOS记录号	WOS:000664854500024
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148431]
专题	土木工程学院
作者单位	1.Key Laboratory of Disaster Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Western China Civil Engineering Disaster Prevention and Mitigation Engineering Research Center of the Ministry of Education, Lanzhou University of Technology, Lanzhou; 730050, China; 3.Gansu Vocational College of Architecture, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Zhang, Rui-Huan,Ye, Shuai-Hua,Tao, Hui. Stability analysis of multistage homogeneous loess slopes by improved limit equilibrium method[J]. Yantu Lixue/Rock and Soil Mechanics,2021,42(3):813-825.
APA	Zhang, Rui-Huan,Ye, Shuai-Hua,&Tao, Hui.(2021).Stability analysis of multistage homogeneous loess slopes by improved limit equilibrium method.Yantu Lixue/Rock and Soil Mechanics,42(3),813-825.
MLA	Zhang, Rui-Huan,et al."Stability analysis of multistage homogeneous loess slopes by improved limit equilibrium method".Yantu Lixue/Rock and Soil Mechanics 42.3(2021):813-825.