This work proposes an improved Newmark-type approach for assessing seismic-induced displacements in slopes. The method refines the multi-block model by Sarma and Chlimintzas (2001) by adopting the General Limit Equilibrium (GLE) method and incorporating the geometric changes of the sliding mass during motion. Displacement is computed by solving block-specific motion equations with updated geometry and mass transfer. Results demonstrate that accounting for geometry evolution leads to increased critical acceleration and safety factors, significantly reducing predicted displacements. A comparison with the traditional rigid-block model confirms the importance of considering slope deformation to avoid overestimations. The proposed method enhances the reliability of performance-based seismic slope stability analyses in engineering practice.
Effects of geometric changes on the displacement of natural slopes
Di Filippo, G.
Primo
;Biondi, G.;Cascone, E.;Nardo, A.;Casablanca, O.
2025-01-01
Abstract
This work proposes an improved Newmark-type approach for assessing seismic-induced displacements in slopes. The method refines the multi-block model by Sarma and Chlimintzas (2001) by adopting the General Limit Equilibrium (GLE) method and incorporating the geometric changes of the sliding mass during motion. Displacement is computed by solving block-specific motion equations with updated geometry and mass transfer. Results demonstrate that accounting for geometry evolution leads to increased critical acceleration and safety factors, significantly reducing predicted displacements. A comparison with the traditional rigid-block model confirms the importance of considering slope deformation to avoid overestimations. The proposed method enhances the reliability of performance-based seismic slope stability analyses in engineering practice.Pubblicazioni consigliate
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