Research on the Mechanical Analysis of Weathered Rock Filling Subgrade on Highway

With the rapid development of national economic construction, traffic network is extending continuously, and the scope of the highway construction is gradually shifting from plain to the mountains. However, weathered rock occupies heavily along highway in mountainous area, and high quality subgrade filling is extremely short, thus a large amount of subgrade filling needed for subgrade high-fill and deep-cut of highway cannot be met. Therefore, based on the grading standard of the degree of rock weathering, and combined with the analysis and research of weathered rock engineering characteristics, the weathered rock filling subgrade that met the engineering requirements was selected in this paper. At last, the bearing capacity and stability of subgrade material were judged according to the analysis of the mechanical property. It provides scientific basis for the local materials of highway construction, and has important practical significance for solving subgrade filling shortage of highway in mountain areas and accelerating highway construction in mountain areas and promoting economic development.