Advanced analysis of 3D steel framework exposed to compartment fire

• Published in: Fire and materials Vol. 28; no. 2-4; pp. 253 - 267
• Main Authors: Liew, J. Y. Richard, Ma, K. Y.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.03.2004; Wiley
• Subjects: advanced analysis; Applied sciences; Building structure; Building technical equipments; Buildings; Buildings. Public works; Computation methods. Tables. Charts; Construction (buildings and works); Eurocode parametric fire; Exact sciences and technology; Fire behavior of materials and structures; Fire protection; fire resistance design; Metal structure; nonlinear analysis; performance-based design; plastic hinge; steel structures; Structural analysis. Stresses; Metallic structure; Compartment fire test; Performance evaluation; Ultimate strength method; International conference; Eurocode; Temperature effect; Modeling; Finite element method; Fire resistance; Simulation; Non linear model; Construction structure; Beam column structure; Plastic hinge; High rise building; Heat transfer; Structural analysis
• ISSN: 0308-0501; 1099-1018
• DOI: 10.1002/fam.850

This paper describes the use of advanced analysis that accounts for both material and geometric nonlinearity to assess the performance of steel structures exposed to a natural compartment fire. The advanced analysis is developed based on inelastic beam‐column theory which can capture the ultimate strength behaviour of members for global analysis of large structures in fire. The heat transfer is computed using a refined finite element mesh. Compartment fire is simulated in accordance with the latest Eurocode prEN 1991‐1‐2. Performance‐based assessments are carried out on multi‐storey space frames subjected to a natural compartment fire. The computed results are compared with those from the conventional approach based on ISO standard fire curve and the advantage of the advanced analysis is highlighted. The effect of fire load and ventilation on the structural response of the frames is studied and the worst‐case fire scenarios are identified. The design implications on the requirement of fire protection are discussed. Copyright © 2004 John Wiley & Sons, Ltd.