Geocell reinforcement has been increasingly applied in transportation infrastructure to improve the stability and serviceability of road embankments constructed on weak subgrades. The load transfer mechanism in geocell–soil systems involves complex interactions between soil confinement, lateral restraint, and membrane effects, which makes the design process challenging using conventional empirical approaches. This study presents a numerical and data-driven framework to investigate the performance of geocell-reinforced embankments subjected to static loading. Finite element simulations were conducted, considering variations in geocell location, geocell height, and distributed load. The simulations are automated through the PLAXIS Python API to generate a comprehensive dataset of embankment responses. A predictive model is then developed using Gene Expression Programming to estimate the settlement of reinforced embankments. A parametric study is subsequently performed to determine effective design configurations. The proposed framework provides a practical tool for improving the reliability and efficiency of geocell-reinforced embankment design.
H. Bui, V. Phan, Thanh-Thien La et al.· Journal of Science & Technol...· 0 citations
With limited public investment, phased investment strategies (2-lane or limited 4-lane configurations) are widely adopted in Vietnam. However, this model poses safety risks due to the lack of median barriers and continuous emergency lanes. This study analyzes and quantifies factors influencing traffic accident severity using 170 accident records from 2018-2025. Integrating descriptive statistics and hierarchical logistic regression, the research identifies heavy trucks as the primary vehicles in over 71% of collisions. The model reveals that accidents on weekdays pose a severity risk 2.445 times higher than on weekends. Notably, "vehicle overturn or run-off-road" accidents - a direct result of inadequate emergency lanes - increase the probability of severe outcomes by 4.178 times. These findings provide a scientific basis for prioritizing infrastructure upgrades and optimizing traffic management on phased expressways.
X. Le, T. Chu, V. Phan· Journal of Transportation Sc...· 0 citations