Progressive Collapse Analysis of a „Lay-Down” Structure Under Fire Conditions

Abstract

The scope of this paper is to present the strength capability under fire action of a typical naval top side structure (lay down area structure) of a FSO (Floating, Storage and Offloading Unit). Where mechanical resistance in the case of fire is required, steel structures shall be designed and constructed in such a way that they maintain their load bearing function the relevant fire exposure. The present study covers the yielding and buckling checks of the top side structure fire exposure. The analysis tools used for the structural analysis of the FSO are DNV Nauticus Hull and FEMAP with NASTRAN NX ver. 11.4.