Slope Stability Analysis Based on Non-proportional and Dynamic Double Strength Reduction Method

KOU Tian; HU Bin; HE Da-zhao; MAO Yuan-jing; YAO Wen-min

doi:10.11988/ckyyb.20160797

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Journal of Changjiang River Scientific Research Institute ›› 2017, Vol. 34 ›› Issue (12) : 84-88. DOI: 10.11988/ckyyb.20160797

ROCK-SOIL ENGINEERING

Slope Stability Analysis Based on Non-proportional and Dynamic Double Strength Reduction Method

KOU Tian^{1, 2}, HU Bin², HE Da-zhao², MAO Yuan-jing², YAO Wen-min²

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Abstract

The aim of this research is to investigate the feasibility of non-proportional dynamic double strength reduction method in slope stability analysis. According to the 3-D progressive failure process and strength parameters of slope in ABAQUS software, the cohesion c and internal friction angle φ in Mohr-Coulomb strength criterion are converted into yield strength σ and internal friction angle β in Drucker-Prager strength criterion, and then the comprehensive stability coefficient of slope is determined through the shortest path to evaluate the slope stability. Results suggest that the non-proportional dynamic double strength reduction method based on Drucker-Prager criterion could reflect the progressive failure process and the roles of strength parameters; the slope stability coefficient obtained by Drucker-Prager criterion is highly close to that calculated by the M-C strength criterion, and the slope stability coefficient and displacement are both smaller than those of traditional strength reduction results with higher safety reserve.

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double strength reduction / non-proportional / D-P strength criterion / ABAQUS / stability analysis

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KOU Tian, HU Bin, HE Da-zhao, MAO Yuan-jing, YAO Wen-min. Slope Stability Analysis Based on Non-proportional and Dynamic Double Strength Reduction Method[J]. Journal of Changjiang River Scientific Research Institute. 2017, 34(12): 84-88 https://doi.org/10.11988/ckyyb.20160797

References

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