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Design of Composite Slab Systems in Case of Fire Using Simplified Finite Element Analyses
Author(s) -
Stadler Martin
Publication year - 2013
Publication title -
stahlbau
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.268
H-Index - 19
eISSN - 1437-1049
pISSN - 0038-9145
DOI - 10.1002/stab.201390134
Subject(s) - slab , finite element method , computer science , engineering , structural engineering
A new method is presented in this thesis for designing both full concrete and composite slab systems with partially unprotected secondary steel beams in case of fire taking into account tensile membrane action. Simplified finite element analyses are used for determining the internal forces in the structure. Cross-section design procedures can be applied with these internal forces to calculate the required reinforcement amount like under ambient temperature. The finite element model is simplified by replacing the thermal analysis with a substitute thermal loading. Non-linear material behaviour is taken into account by a reduced stiffness of the model which allows an efficient linear elastic calculation. The presented method therefore enables a simple and efficient design of slab systems in case of fire.