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Probabilistic Stability Analysis of a Three-Dimensional Rock Slope Characterized by the Hoek-Brown Failure Criterion
AbstractThe probabilistic stability analysis of a three-dimensional rock slope is studied in this paper. The deterministic computation of the critical slope height is based on the kinematic approach of limit analysis, for which the generalized Hoek-Brown failure criterion is adopted to characterize the failure of rock masses. Sparse polynomial chaos expansion is taken to perform the probabilistic analysis using a response surface method. The uncertainties considered involve the Hoek-Brown parameters (mi, GSI, σc, and Di), slope geometry parameters (β, H, and B/H), and rock mass unit weight (γ). The influences of the uncertainty level, correlation relationships between the Hoek-Brown parameters, and distribution types are discussed. Finally, a reliability-based design chart is provided to evaluate the safety factor of a slope required for a target failure probability.
Probabilistic Stability Analysis of a Three-Dimensional Rock Slope Characterized by the Hoek-Brown Failure Criterion
AbstractThe probabilistic stability analysis of a three-dimensional rock slope is studied in this paper. The deterministic computation of the critical slope height is based on the kinematic approach of limit analysis, for which the generalized Hoek-Brown failure criterion is adopted to characterize the failure of rock masses. Sparse polynomial chaos expansion is taken to perform the probabilistic analysis using a response surface method. The uncertainties considered involve the Hoek-Brown parameters (mi, GSI, σc, and Di), slope geometry parameters (β, H, and B/H), and rock mass unit weight (γ). The influences of the uncertainty level, correlation relationships between the Hoek-Brown parameters, and distribution types are discussed. Finally, a reliability-based design chart is provided to evaluate the safety factor of a slope required for a target failure probability.
Probabilistic Stability Analysis of a Three-Dimensional Rock Slope Characterized by the Hoek-Brown Failure Criterion
Pan, Qiujing (author) / Jiang, Yuan-Jun / Dias, Daniel
2017
Article (Journal)
English
BKL:
56.03
/
56.03
Methoden im Bauingenieurwesen
Local classification TIB:
770/3130/6500
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