This paper presents an application of the distinct element method with assembled element on shear resistance evaluation technique of filled boulders in simple shear steel frame, as a fundamental study of estimation method of the shear resistance of filled materials in the steel made Sabo structures. The simple shear test carried out in advance is modeled by using 3-D distinct element method to evaluate the shear resistance and analyzed its mechanism of the filled gravels. The relationship between shear resistance and the displacement is analyzed, and compared with the experimental one. The effect on ruggedness of assembled element in the simple shear resistance is discussed.
