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Key Words: concrete pavement, granular base course, cyclic triaxial compression test,residual deformation, elastic FEM analysis

STUDY ON PERMANENT DEFORMATION ANALYSIS OF BASE COURSE SURFACE UNDER CONCRERTE PAVEMENT

Yasushi TAKEUCHI, Katsura ENDO, Masashi KOYANAGAWA, Tatsuo NISHIZAWA and Kazuyuki KUBO

In August 1997, the loading test with a concrete pavement was carried out at the Public Works Research Institute (PWRI). From this experimental result, the permanent deformation of the base course surface by cyclic loading was confirmed. In this study, the estimation method of permanent deformation of base course surface was suggested based on the theory of elasticity and the repeated tri-axial compression test result of granular base course material and subgrade material. And then, the analytical result was compared with the experimental result. As the result of comparison, the estimated value and the measured value agreed well, and the adequacy of this estimation method was confirmed in this paper.