Residual strength of a steel-concrete composite structure subjected to a design...

• Author(s): Nogueiro, Pedro ; Santiago, Aldina ; Silva, Luís Simões da ; Bento, Rita ; Vila Real, P.M.M.
• Date: 2005
• Persistent ID: http://hdl.handle.net/10198/4977
• Origin: Biblioteca Digital do IPB
• Subject(s): Earthquake; Fire; Connections; Steel structures
• Document Type: Article
• Language: English

Description

This paper presents a numerical investigation of the residual strength of a typical PR momentresistant multi-storey steel framed structure, subjected to a design seismic event followed by fire. In order to allow a calibration with some real results from fire tests on a natural scale, the architectural and structural definitions of the eight-storey steel Cardington building were chosen as the reference case, adapted to deal with basic seismic requirements. The seismic action was simulated with an artificial accelerogram with PGA of 0.6g, chosen to achieve significant energy dissipation in the joints. The adopted fire event is limited to an isolated compartment and it is defined as the natural fire observed during a full-scale fire test carried out at the BRE. Finally, the results are discussed in terms of robustness requirements for extreme events.