Reliability Based Design Charts for Spatially Variable MSW Landfill Slopes

Raghuram, A.S.S. and Raviteja, K. V. N. S. and Basha, B Munwar (2020) Reliability Based Design Charts for Spatially Variable MSW Landfill Slopes. In: Geotechnical Special Publication, 25 February 2020 - 28 February 2020.

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In this paper, a numerical analysis is presented using fast Lagrangian analysis of continua (FLAC) 2D for the evaluation of slope reliability. The Cholesky decomposition technique has been used to develop the 2D non-Gaussian homogeneous random field. The performance function against MSW slope failure is formulated based on the linear regression equation of factor of safety obtained using numerical package, FLAC 2D. A reliability index of MSW slopes is computed using first order reliability method (FORM). The spatially variable design parameters of MSW landfill slopes are treated as random variables. The results of the present study provide an ample understanding of the spatial variability associated with shear parameters of MSW landfill slopes. The shear stress and shear displacements along the geomembranes (GMB) interfaces are presented with and without spatial variability. The effect of correlation distance on the reliability index of MSW landfill slope is presented in the form of design charts for different mean and COV values associated with unit weight, cohesion, and friction angle of the MSW.

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Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Cholesky decomposition; Correlation distance; Fast Lagrangian analysis of continuum; First order reliability methods; Linear regression equation; Performance functions; Reliability based design; Spatial variability
Subjects: Civil Engineering
Divisions: Department of Civil Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 31 Jul 2021 07:11
Last Modified: 31 Jul 2021 07:11
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