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Título

NUMERICAL AND PARAMETRIC ANALYSIS OF HORIZONTAL DISPLACEMENT AND DISTORTIONS IN UNREINFORCED EMBANKMENTS ON SOFT SOILS

Resumo

This paper, the second in a series of three, examines the horizontal displacement and distortion in four unreinforced embankments on soft soils using numerical and parametric analyses. The performance of granular embankments, each measuring 3.5 meters in height and 17 meters in width, on a soft soil layer extending 30 meters horizontally and with a thickness ranging from 5 to 20 meters was evaluated using Abaqus software. The soft clay and granular embankment material were modeled as elastoplastic, adhering to the Modified Cam Clay plasticity criterion and Mohr-Coulomb criterion, respectively. Forty numerical simulations were performed, encompassing various geometries and soil properties. The results present and discuss the impact of soil thickness, over-consolidation ratio (OCR), recompression index (k), and critical state slope (M) on horizontal displacement, distortion, and horizontal volume over 1-month and 48-month intervals. Furthermore, the paper analyzes the volume ratio, the displacement ratio, the pattern of horizontal displacement over time and along the depth, and the variations in normalized horizontal displacement and distortions along the depth for different vertical lines to identify patterns associated with slope instability.

Palavras-chave

Abaqus, Horizontal Displacement, Numerical Analysis, Parametric Analysis, Soft Soil, Unreinforced Embankments.

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