MODELING STUDY AND NUMERICAL ANALYSIS OF FLEXIBLE PAVEMENT IN SOFT SOIL BASED ON FINITE ELEMENT METHOD

Yonas Prima Arga Rumbyarso; Dohar Sidabutar; Gali Pribadi

Yonas Prima Arga Rumbyarso Program Doktor Teknik Sipil, Universitas Islam Sultan Agung, Semarang, Indonesia
Dohar Sidabutar Program Studi Teknik Sipil, Jurusan Teknik Sipil, Politeknik Negeri Medan, Medan, Indonesia
Gali Pribadi Program Doktor Teknik Sipil, Universitas Islam Sultan Agung, Semarang, Indonesia

Keywords: Water Content, Finite Element Method, Displacement, Flexible Pavement, Effective Stress.

Abstract

Road construction with flexible pavement system on soft clay subgrade faces technical constraints in the form of low bearing capacity, high compressibility, and sensitivity to changes in moisture content, so this study evaluates stress-strain response using finite Element Method (FEM) through two-dimensional modeling (2D) consisting of a layer of clay soil 57 cm thick and a layer of flexible pavement 3 cm thick, with, in three variations of moisture content, namely 19%, 36%, and 53%, where the results of the analysis show that the increase in water content causes an increase in effective stress from 10.57 kN/m2 at 19% to 11.54 kN/m2 at 53%, while the displacement value is relatively stable at around 0.2046 mm, so it can be concluded that although the variation of water content affects the stress distribution, the impact on total deformation is relatively small and flexible pavement is still able to maintain deformation stability in the problematic soil conditions.

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References

Shukla, S., Shukla, S., Mittal, A., & Singh, T. (2022). A review on use of coir fibre in road construction. Materials Today: Proceedings, 65, 1839–1845.
Mohamad, N. O., et al. (2016). Challenges in construction over soft soil - Case studies in Malaysia. IOP Conference Series: Materials Science and Engineering, 136(1), 012016.
Gunarti, A. S. S., Zaika, Y., Munawir, A., Suryo, E. A., & Harimurti. (2023). Identifying the microstructure and mechanical properties of expansive soil stabilized using fly ash and waste foundry sand. Eastern-European Journal of Enterprise Technologies, 6(6(126)), 31–40.
Khalaf, A. A., & Kopecskó, K. (2023). Utilizing residual red mud by geopolymerization process – From an expansive soil to a rock-like material. Clean Engineering and Technology, 14, 100640.
Ahirwar, S. K., & Mandal, J. N. (2017). Finite element analysis of flexible pavement with geogrids. Procedia Engineering, 189, 411–416.
Lan, T., Zhang, R., Yang, B., & Meng, X. (2022). Influence of swelling on shear strength of expansive soil and slope stability. Frontiers in Earth Science, 10, 859119.