Abstract: To address road transportation safety issues caused by pavement damage resulting from subgrade instability and to evaluate the bearing performance of bamboo-reinforced soil subgrade,this study investigates the bearing and deformation mechanism of such subgrade in rural highway engineering.Taking a typical rural highway embankment as the research object,the Pasternak model was employed to simulate shear deformation relationships,calculate different bearing states,and perform interface element simulations.The results indicate that after bamboo reinforcement,the vertical earth pressure on the soil subgrade becomes more uniform,while horizontal displacement of the soil mass and the vertical settlement are reduced.Additionally,the field interface friction coefficient increases,and horizontal deformation of the reinforcement remains limited.These findings demonstrate that the bamboo reinforcement enhances the shear strength of the soil,improves subgrade bearing capacity and stability,and exhibits strong practical applicability.

Key words: ｒｕｒａｌｈｉｇｈｗａｙｅｎｇｉｎｅｅｒｉｎｇ, ｂａｍｂｏｏｒｅｉｎｆｏｒｃｅｍｅｎｔ, ｓｏｉｌｓｕｂｇｒａｄｅ, ｂｅａｒ, ｄｅｆｏｒｍａｔｉｏｎｍｅｃｈａ
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