Numerical Analysis Of Flexible Pavement On Soft Soil Using Finite Element Method

Yonas Prima Arga Rumbyarso

Abstract


Road he construction of flexible pavement on soft clay subgrades faces challenges due to low bearing capacity, high compressibility, and sensitivity to moisture. This study analyzes the stress–strain response of soft clay using Finite Element Method with three water content scenarios: 19%, 36%, and 53%. The 2D model consisted of a 57 cm clay layer and a 3 cm pavement layer, with soil parameters obtained from laboratory tests and represented by the Mohr-Coulomb model. The results show that effective stress increased slightly with higher water content, from 10.57 kN/m² at 19% to 11.54 kN/m² at 53%. In contrast, displacement remained nearly constant at around 0.2046 mm. This indicates that while moisture variation affects stress distribution, it has minimal impact on soil deformation under the modeled conditions. These findings suggest that flexible pavement on soft clay may maintain stable deformation despite increased moisture, providing useful insights for pavement design on problematic soils.

Keywords


GeoStudio, SIGMA/W, soft clay, effective stress, displacement, flexible pavement, water content.

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References


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DOI: http://dx.doi.org/10.30659/jacee.8.2.1-7

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JACEE (Journal of Advanced Civil and Environmental Engineering) was established to meet the need for dissemination of research results, critical reviews, and quality analysis. JACEE invites and welcomes the submission of advanced research and review papers, innovations and developed selected conference papers that have never been previously publicized. This journal provides publications and a forum to the academics, scholars and advanced level students for exchanging significant information and productive ideas associated with all these disciplines. It is published by Fakultas Teknik Universitas Islam Sultan Agung, Indonesia, in collaboration with Fédération Internationale du Béton twice a year in April and October.