Safety Factor Calculation Method of Anchored Slope Based on Pseudo Cohesion Theory

Abstract:

The stability of slope is closely related to stress-state. Assumptions about stress-state in the rigid body limit equilibrium method are not satisfied with the demands of deformation compatibility principle. So the stability analysis method compatible with slope stress and anchorage system should be established for anchored slope. The pseudo cohesion concept theory is used to analyze the improvement of stress-state due to anchoring measures, and the stability safety factor of anchored slope by sliding surfaces searching method is obtained, in which grid control is used and embedded in FLAC3D. The result shows that the safety factor with the pseudo cohesion theory is 1.43 while the strength reduction method is 1.41. The similar results for them show the validity of proposed method. What's more, the suggested method has an advantage of short time consuming.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 453-456
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.453
• Online since: May 2012
• Authors: Chong Shi, Yu Long Zhang, Qiang Zahng, Hai Li Wang, Sheng Nian Wang
• Keywords: Anchored Slope, Grid Control, Pseudo Cohesion Theory, Safety Factor

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