Influence of Thermal Elongation of Beams on the Fire Resistance of RC Frames

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

Xavier, HF (Author) Other; Faria, R (Author) FEUP; Real, PV (Author) Other

Conference proceedings International

Title: STRUCTURES IN FIRE: PROCEEDINGS OF THE 6TH INTERNATIONAL CONFERENCE

Pages: 262-269

6th International Conference on Structures in Fire (SiF 10)

East Lansing, MI, JUN 02-04, 2010

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 4 Citations

Scientific classification

FOS: Engineering and technology > Civil engineering

Other information

Authenticus ID: P-003-CZJ

Abstract (EN): Based on design codes like Eurocode 2 (EC2), engineers are able to assess fire resistance of reinforced concrete (RC) frames via several methods, ranging from simplified cross-section approaches up to advanced thermo-mechanical analyses. Fire resistance assessment may be performed over the entire structure (or part of it) or, in a simplified manner, over each RC member considered as isolated. Although it is commonly accepted that the proper inclusion of structural continuity and fire induced effects is vital for an accurate evaluation of the RC building's response, the approach where each beam or column is handled as an independent member under fire conditions is often applied due to its simplicity, meaning that global behavior is disregarded. In this work three RC frames attached to a rigid bracing system are submitted to a standard fire, and analyzed with the advanced thermo-mechanical code SAFIR. Influence of the thermal elongation of beams, which impose considerable drifts to the outermost columns, is investigated. Fire resistances of the beams and columns of the same frames are assessed with the 'Zone method' of EC2, and compared to the results obtained with SAFIR.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8