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Título

NUMERICAL AND PARAMETRIC ANALYSIS OF SETTLEMENT IN UNREINFORCED EMBANKMENTS ON SOFT SOILS

Resumo

This paper, the first in a series of three, investigates the settlement behavior of four unreinforced embankments on soft soils through numerical and parametric analysis. The embankments have dimensions of 3.5 meters in height and 17 meters in width and are modeled on a soft soil layer that extends 30 meters horizontally, with thicknesses ranging from 5 to 20 meters. The soil was modeled using two different plasticity criteria: the Modified Cam Clay criterion for the soft soil and the Mohr-Coulomb criterion for the embankment material. A total of forty numerical simulations were conducted to analyze the influence of 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 settlement and vertical volume of mobilized soil. Normalized plots allow settlement comparisons over time and horizontal position, identifying OCR and κ as the most influential parameters.

Palavras-chave

Soft Soil, Embankments, Numerical Analysis, Parametric Analysis, Abaqus, Settlement.

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