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@article{Rackauskaite:2017:10.1016/j.firesaf.2017.04.018,
author = {Rackauskaite, E and Kotsovinos, P and Rein, G},
doi = {10.1016/j.firesaf.2017.04.018},
journal = {Fire Safety Journal},
pages = {542--552},
title = {Structural response of a steel-frame building to horizontal and vertical travelling fires in multiple floors},
url = {http://dx.doi.org/10.1016/j.firesaf.2017.04.018},
volume = {91},
year = {2017}
}
TY - JOUR
AB - During previous fire events such as the World Trade Centre Towers (WTC) 1, 2 & 7 in New York (2001), the Windsor Tower in Madrid (2005), and the Plasco building in Iran (2017), flames were observed to travel horizontally across the floor plate and vertically to different floors. Such fires are not considered as part of the traditional prescriptive structural design for fire. Recently, the Travelling Fires Methodology (TFM) has been developed to account for such horizontally travelling nature of fires. A dozen of studies have investigated the structural response of steel, concrete, and composite structures to a single-floor travelling fire. 5 out of 6 of the vertically travelling fire studies have been limited to the structures with a long span composite truss system as in the WTC Towers. The aim of this work is to investigate the response of a substantially different structural system, i.e. a generic multi-storey steel frame, subjected to travelling fires in multiple floors, and varying the number of fire floors, including horizontal and vertical fire spread. A two-dimensional 10-storey 5-bay steel frame is modelled in the finite element software LS-DYNA. The number of multiple fire floors is varied between 1 and 10, and for each of these scenarios, 5 different fire types are investigated. They include four travelling fire scenarios and the standard fire. In total, 51 fire simulations are considered. The development of deflections, axial forces, bending moments and frame utilization are analysed. Results show that the largest stresses develop in the fire floors adjacent to cool floors, and their behaviour is independent of the number of fire floors. Results indicate that both the fire type and the number of fire floors have a significant effect on the failure time (i.e. exceeded element load carrying capacity) and the type of collapse mechanism. In the cases with a low number of fire floors (1–3) failure is dominated by the loss of material strength, while
AU - Rackauskaite,E
AU - Kotsovinos,P
AU - Rein,G
DO - 10.1016/j.firesaf.2017.04.018
EP - 552
PY - 2017///
SN - 1873-7226
SP - 542
TI - Structural response of a steel-frame building to horizontal and vertical travelling fires in multiple floors
T2 - Fire Safety Journal
UR - http://dx.doi.org/10.1016/j.firesaf.2017.04.018
UR - http://hdl.handle.net/10044/1/48075
VL - 91
ER -
Phone:
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Email:
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Address:
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