Reliability Based Optimum Design of Anchored Rock Slopes Considering Rock Bolt and Rock Mass Interaction

Basha, B. Munwar and Gautham, Adapa and Moghal, Arif Ali Baig (2020) Reliability Based Optimum Design of Anchored Rock Slopes Considering Rock Bolt and Rock Mass Interaction. In: Geotechnical Earthquake Engineering and Special Topics,, 25 February 2020 - 28 February 2020.

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The existence of uncertainty in the design parameters of anchored rock slopes warrants reliability based study. An approach for reliability based design optimization of anchored rock slopes against plane failure is described under different hydraulic distributions. Planar slide failure along with water pressure has been considered in conjunction with Barton-Bandis failure criterion to compute the factor of safety. Nonlinear strength criterion is employed for the computation of strength of jointed rock mass. The rock bolt and rock mass interaction model is used to analyze the stabilizing force in anchors. The variability associated with Barton-Bandis parameters, namely joint compressive strength (JCS), joint roughness coefficient (JRC), and basic friction angle (ψ) and a joint factor is considered. The target reliability based design optimization (TRBDO) is used to obtain an optimum length of the rock bolt and optimum anchor force required to stabilize the rock slope in order that the reliability index must meet a desired level of safety.

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IITH Creators:
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Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Design parameters; Joint roughness coefficients; Level of safeties; Non-linear strength criterions; Reliability Index; Reliability-based design optimization; Reliability-based optimum design; Target reliability
Subjects: Civil Engineering
Divisions: Department of Civil Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 31 Jul 2021 07:20
Last Modified: 04 Mar 2022 10:24
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