Abstract: Currently, the construction of bamboo reinforced soil subgrades in highway engineering typi-cally involves a single-ayer approach, which limits the extent of reinforcement coverage and makes itchallenging to ensure the quality of roadbed construction in rural road projects. To address this, this pa-per proposes an analysis of the application of bamboo reinforced soil subgrades in rural road engineeringBased on current measurement requirements, the underlying layers will be treated, and a multi-layer approach will be implemented to overcome the limitations of reinforcement coverage. This approach includesthe use of multi-layer gray soil layers and bamboo reinforcement with anti-corrosion measures. On thisfoundation, the application of bamboo reinforced soil subgrades in rural road engineering is realizedthrough the caleulation of reinforced soil and the laying of bamboo reinforcement layers. The test resultsshow that for the selected 7 independent test sections, the roadbed load ratio can reach 5. 5 or higher un-der three preloading stages of 100 kN, 150 kN, and 180 kN, respectively. This indicates that the pro-posed bamboo reinforced soil subgrade method for rural roads is efficient, reliable, and highly targeted.Additionally , the roadbed quality has been significantly improved, providing valuable guidance for practical construction.

Key words:  , rural roads, underlying layer treatment, multi-layer gray soil layer, bamboo reinforced soil , soil subgrade construction