Residual strength and alternate load paths are two fundamental design strategies to ensure adequate resistance against progressive collapse of structures. This paper presents an experimental study carried out on two full-scale steel and concrete composite frames to investigate their structural behaviour in case of a column collapse. The study focusses on the redundancy of the structure as provided by the beam-slab floor system as well as by the ductile beam-to-column joints. The specimens were ground floor sub-frames ‘extracted’ from two reference buildings designed in accordance to the Eurocodes. The frames have the same overall dimensions, but a different, symmetric and asymmetric, configuration of the column layout. In both tests, the collapse of an internal column was simulated. The paper presents the main features of the frames and the principal outcomes of the test on the symmetric frame.
PROGRESSIVE COLLAPSE: THE CASE OF COMPOSITE STEEL-CONCRETE FRAMES / Zandonini, Riccardo; Baldassino, Nadia; Freddi, Fabio; Roverso, Giacomo. - STAMPA. - (2020), pp. 762-774. (Intervento presentato al convegno CCVIII tenutosi a Jackson Hole, Wyoming nel 29th July- 2nd August 2017).
PROGRESSIVE COLLAPSE: THE CASE OF COMPOSITE STEEL-CONCRETE FRAMES
Zandonini, Riccardo;Baldassino, Nadia;Freddi, Fabio;Roverso, Giacomo
2020-01-01
Abstract
Residual strength and alternate load paths are two fundamental design strategies to ensure adequate resistance against progressive collapse of structures. This paper presents an experimental study carried out on two full-scale steel and concrete composite frames to investigate their structural behaviour in case of a column collapse. The study focusses on the redundancy of the structure as provided by the beam-slab floor system as well as by the ductile beam-to-column joints. The specimens were ground floor sub-frames ‘extracted’ from two reference buildings designed in accordance to the Eurocodes. The frames have the same overall dimensions, but a different, symmetric and asymmetric, configuration of the column layout. In both tests, the collapse of an internal column was simulated. The paper presents the main features of the frames and the principal outcomes of the test on the symmetric frame.File | Dimensione | Formato | |
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