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| Vol. - No. | Vol.7 - No.4 |
|---|---|
| Date | Dec., 2018 |
| Title | Preliminary Modelling of Plasco Tower Collapse |
| Author | Tejeswar Yarlagadda1, Hamzeh Hajiloo2, Liming Jiang1, Mark Green2, and Asif Usmani1+ |
| Institutions |
1Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong, China 2Department of Civil Engineering, Queen's University, Kingston, Ontario, Canada |
| Abstract |
In a recent tragic fire incident, the Plasco Tower collapsed after an intense outburst of fire lasting for three and a half hours and claiming the lives of 16 firefighters and 6 civilians. This paper will present continuing collaborative work between Hong Kong Polytechnic University and Queen's University in Canada to model the progressive collapse of the tower. The fire started at the 10th floor and was observed to have travelled along the floor horizontally and through the staircase and windows vertically. Plasco Tower was steel structure and all the steel sections were fabricated by welding standard European channel or angle profiles and no fire protection was applied. Four internal columns carried the loads transferred by the primary beams, and box columns were constructed along the perimeter of the building as a braced tube for resisting seismic loading. OpenSees fibre-based sections and displacement-based beam-column elements are used to model the frames, while shell elements are used for the reinforced concrete floor slabs. The thermal properties and elevated temperature mechanical properties are as recommended in the Eurocodes. The results in this preliminarily analysis are based on rough estimations of the structure's configuration. The ongoing work looks at modeling the Plasco Tower based on the most accurate findings from reviewing many photographs and collected data. |
| Keyword | Progressive collapse, Structures in fire, Plasco Tower, OpenSees simulation |
| PP. | PP.397~408 |
| Paper File |
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