Orthogonal tests research on the influential Factors of the Shear Characteristics of interface between Coarse Sand and Concrete

摘要

The direct shear tester is refitted from RMT-150B testing system, which is utilized to carry out direct shear test for coarse sand with 0%, 8%, 16%, 24% water content and contact surface with four different kinds of roughness, strength concrete basement under different normal stresses, the variance analysis method is used to analyze the test data, the results show that the influence height of normal stress on the sand and structure contact surface is significant, and the roughness of contact surface has impact on it, and there are no significant effects of water content and concrete roughness.