Effect of cohesion on internal stability of bilinear geosynthetic-reinforced slopes

2018 6th International Conference on Mechanical Engineering, Materials Science and Civil Engineering

材料科学;机械制造;土木建筑工程

Zhang, Gongquan^1 ; Ruan, Xiaobo^1 ; Yan, Jun^1 ; Zhu, Dayong^2

School of Automotive and Transportation Engineering, Hefei University of Technology, Hefei, China^1

School of Civil Engineering, Hefei University of Technology, Hefei, China^2

关键词: Critical slip surface;    Depth of cracks;    Internal design;    Internal stability;    Limit equilibrium;    Reinforced slope;    Reinforcement force;    Reinforcement strengths;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/542/1/012011/pdf
DOI  :  10.1088/1757-899X/542/1/012011

来源: IOP

【 摘 要 】

This paper presents a limit equilibrium (LE) approach to analyze the internal stability of the bilinear geosynthetic-reinforced slopes comprised of cohesive reinforced fill. This LE analysis uses a top-down log spiral mechanism to formulate the resultant reinforcement force in the lower tier required for internal design of such reinorced slopes. The presented formulation considers both cohesion and depth of crack, and then the required unfactored reinforcement strength is defined and used for subsequent analysis. Results are presented in the form of stability charts, enabling quick assessment of reinforcement strength required for internal stability. In addition, the effect of cohesion and depth of crack on the critical slip surface is discussed, respectively.