Fire analysis of steel–concrete composite beam with interlayer slip

• Published in: Computers & structures Vol. 89; no. 1; pp. 189 - 200
• Main Authors: Hozjan, Tomaž, Saje, Miran, Srpčič, Stanislav, Planinc, Igor
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 2011; Elsevier
• Subjects: Accounting; Analytical and numerical techniques; Applied sciences; Beams (structural); Building structure; Buildings. Public works; Construction (buildings and works); Exact sciences and technology; Finite element method; Fire; Fires; Fundamental areas of phenomenology (including applications); Heat transfer; High temperatures; Mathematical analysis; Mechanical contact (friction...); Moisture; Moisture and heat transfer; Physics; Slip; Slip between layers; Solid mechanics; Steel-concrete composite structure; Steel–concrete composite beam; Structural and continuum mechanics; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); Moisture and heat transfer; Steel–concrete composite beam; High temperatures; Slip between layers; Fire; High strain; Frame construction; Thermomechanical properties; High temperature; Steel-concrete composite beam; Modeling; Finite element method; Composite construction; Sliding contact; Concrete construction; Humidity; Fire effect; Heat transfer
• ISSN: 0045-7949; 1879-2243; 1879-2243
• DOI: 10.1016/j.compstruc.2010.09.004

The paper discusses the effects of slip and moisture transfer on the behaviour of a planar steel–concrete composite beam subject to fire conditions. The moisture and heat transfer is assumed to be governed by a coupled problem, while the mechanical behaviour accounting for slip between layers is described by strain-based beam finite elements. Hence the fire analysis is perfomed in two separate steps, of which the moisture and heat transfer analysis is performed first, followed by the mechanical analysis. The present novel finite-element formulation proves to be appropriate for the thermo-mechanical analysis of frame-like structures, as it is robust, reliable and accurate.