| In this study、 static loading tests and dynamic shaking tests of pile foundations were conductedby using centrifuge models on problematic peaty ground、 which is distributed widely in Hokkaido area of Japan.The test results were analyzed focusing on the coefficients of both static and dynamic horizontal subgradereaction of the pile foundation、 and the following findings were obtained.1) The dynamic interaction characteristics between piles and grounds for the problematic peat are quite differentfrom that for usual clay and sandy soils on the basis of the results of dynamic centrifuge model tests.2) The ratio (α) of the coefficient of dynamic horizontal subgrade reaction (Khe) and that of static horizontal subgrade reaction (Kh) for peat does not be coincident with the values specified in the Specifications for [*]Highway Bridges in Japan. |
