2025 年 16 巻 論文ID: PP3895
This study examines load distribution and stress-strain behavior due to moving vehicles on road sections with and without geogrid reinforcement. Field measurements were taken from the Arughat-Okhale Road Section of Nepal’s Midhill Highway Project using a TATA Truck Tipper SK 1613 at the speed of 5 km/h. Data was collected with earth pressure and strain gauge sensors placed at the mid-thickness of the base course. Numerical models were developed to simulate both constant and accelerated vehicle motion (0.50 m/s2) with point and area load configurations. Results showed that area load configurations better matched field measurements. The study analyzed stress-strain distributions at critical points above the subgrade and base course. Geogrid reinforcement improved subgrade stress-strain, mitigating structural deficiencies, while enhancing base course stress-strain to reduce surface distresses. This methodology can be adapted to varying road conditions, traffic, and vehicle dynamics. Further research on different geogrid types and material models is recommended to optimize road design.
