Undrained Cyclic Behaviour of Dense Frederikshavn Sand

A modified contour diagram is created for the Frederikshavn Sand in the undrained case for a relative density of ID = 80 %. It can be used to estimate the number of cycles to failure for a given combination of pore pressure, average and cyclic load ratio. The diagram is based on a series of undrained cyclic triaxial tests, which have been performed at the Geotechnical Laboratory at Aalborg University. In order to ensure offshore conditions, the tests were fully saturated and performed with a relative density of 80 %. During cyclic loading, special attention was given to the development of pore pressure and deformation.A modified contour diagram is created for the Frederikshavn Sand in the undrained case for a relative density of ID = 80 %. It can be used to estimate the number of cycles to failure for a given combination of pore pressure, average and cyclic load ratio. The diagram is based on a series of undrained cyclic triaxial tests, which have been performed at the Geotechnical Laboratory at Aalborg University. In order to ensure offshore conditions, the tests were fully saturated and performed with a relative density of 80 %. During cyclic loading, special attention was given to the development of pore pressure and deformation