Seismic response of a typical fixed platform foundation under earthquake loading

Offshore platforms in seismically active areas should be designed to service severe earthquake excitations with no global structural failure. This paper summarizes the dynamic analysis of a typical fixed platform under the earthquake loading in the seismically active zone. The dynamic analysis includes interpretation of dynamic design parameters based on the available site-specific data, together with foundation design recommendations for earthquake loading conditions, which include free-field site response analyses, the liquefaction analyses and the soil-pile interaction analyses.