Response and design of buried pipelines subjected to differential ground settlement

摘要

A series of 3-D centrifuge model tests on buried pipelines generated detailed data of both distribution of earth pressure along the pipe long axis and non-linear change in the pipeline response (earth pressure and deflection) due to increase in differential ground settlement. A new design method that considers both high earth pressure concentration onto the upper-half of pipeline and change in the extent of the area with the pressure concentration was proposed. Its validity was confirmed through comparison with the test results.