Abstract
From a previous test result using flexible pipes having a different thickness and an equivalent bending ring stiffness, it is found that the influence of the thickness of the pipe upon the deflection and the distribution of bending strain was extremely small and the larger axial stress acts on the pipe with the thinner wall, and that the change of axial stress in infinitesimal section of pipe was larger with the thinner wall. In this study, shaking table tests using these pipes were conducted in order to verify the influence of the thickness of pipe, a condition of test pit and bedding material on the dynamic behavior of pipes due to a shear deformation of a ground. As the test results, although the bending strain increased in proportion to the thickness of the pipe, the influence of the thickness of the pipe upon the shape of the bending strain distribution was extremely small. In addition, judging from a relationship between shear strains of ground and a maximum absolute axial stress, it is revealed that the thinner the thickness of pipe is, the larger the rate of the maximum absolute axial stress to shear strain is.
