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Numerical study of a steel sub-frame in fire
Santiago, Aldina; Silva, Luís Simões da; Real, Paulo Vila; Veljkovic, MilanSteel-framed buildings are generally designed with "simple" shear-resisting connections, and lateral forces are resisted by vertical bracing and shear walls. When a beam is considered then the effects of the longitudinal restraints by the adjacent structure and the rotational restraint by the connections has to be taken into account. Because of structural interaction, the beam behaviour at elevated temperature ...
Residual strength of a steel-concrete composite structure subjected to a design...
Nogueiro, Pedro; Santiago, Aldina; Silva, Luís Simões da; Bento, Rita; Vila Real, P.M.M.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, ada...
Post-limit stiffness and ductility of end-plate beam-to-column steel joints
Silva, L. Simões da; Santiago, Aldina; Vila Real, Paulohttp://www.sciencedirect.com/science/article/B6V28-454T650-3/1/443e289c3e00bc6a910cdfa50f086595
The effect of residual stresses in the lateral-torsional buckling of steel I-be...
Vila Real, P.M.M.; Cazeli, R.; Silva, L.S.; Santiago, Aldina; Piloto, P.A.G.When a beam is bent about its major axis it may twist and move laterally, before it reaches in bending. Although the problem, of lateral-torsional buckling of steel beams at room temperature has a well established solution, the same problem at elevated temperature has not. A numerical investigation of the laleral-torsional of buckling of steel I-beams subjected to a temperature variation from room temperature u...
A component model for the behaviour of steel joints at elevated temperatures
Silva, L. Simões da; Santiago, Aldina; Vila Real, PauloRecent experimental evidence has shown that steel joints exhibit a distinct change in their moment-rotation response under increasing temperature. In terms of cold design, the component method is currently the widely accepted procedure for the evaluation of the various design values. It is the purpose of the present paper to extend the component method to the prediction of the response of steel joints under fir...
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