文档介绍：American Journal of Applied Sciences 6 (4): 631-637, 2009
ISSN 1546-9239
© 2009 Science Publications
Reliability-Based Earthquake Design of Jacket-Type Offshore Platforms
Considering Pile-Soil-Structure Interaction
Behrouz Asgarian and Hossein Agheshlui
Faculty of Civil Engineering University of Technology,
19967-15433, Tehran, Iran
Abstract: There are plenty of uncertainties in environmental condition of ocean and also in platform
element capacities. Reliability-based method could consider these uncertainties. A reliability-based
earthquake design method was used to determine the earthquake LRFD parameters for two
conventional, steel, pile-supported (template-type) offshore platforms located in the Persian Gulf. The
pile-soil-structure interaction, the buckling and postbuckling behavior of the braces were considered.
Two steel platforms were simulated accurately by the finite element program Opensees. Field data
were assumed based on past studies. Sensitiveness of reliability-based method was studied. It was
found that the geometry of jacket and different types of braces was important in the capacity and the
behavior of offshore platforms. Finally the calculated LRFD elements resistance factors for these two
platforms pared with API mended factors and it was observed that API mended
element resistance facto