Abstract
A dynamic centrifuge test and FEM analysis were carried out to investigate a seismic behavior of buried pipeline due to lateral flows caused by ground liquefaction. The model of the centrifuge test, which was performed under the centrifugal acceleration of 30g, consisted of a caisson type quay wall, upper unliquefable, lower liquefable layer and high-pressure gas tube with the outer diameter of 600mm in prototype scale including a 90 degree bent part. Lateral flow induced by the deformation of the quay wall made the model pipe a large deformation up to plastic strain level. Furthermore, the applicability of analysis by FEM shell model was verified to simulate the large deformation of pipe model.
