Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dynamic Debris Loading in Flat Plate and Steel Framed Buildings
Falling debris imparts a dynamic loading on the floor below. A simplified estimation of this loading depends on the amount of kinetic energy transmitted from the upper floor during impact. The kinetic energy of the impacting floor that is transferred to the impacted floor is first theoretically determined for the two extreme impact possibilities, namely fully rigid and fully plastic impact. Estimation of the falling debris loading is carried out for a reinforced concrete flat-plate system and compared to an earlier analysis using a steel framed composite building. Theoretically, a plastic impact results in an amount of energy imparted to a lower floor of 33% and 37.5 % of the initial kinetic energy of the falling floor for the reinforced concrete flat plate building and composite steel-concrete framed building, respectively. For a rigid impact this value is between 44%–97% for reinforced concrete flat plate and 41%–98% for steel framed building. The relative impact loads and ability of the impacted floors to arrest the progressive collapse is also analyzed. For both the concrete flat plate buildings and steel frame, the impacted floor is highly unlikely to withstand an impact from the floor above. The analysis of the flat-plate system includes a detailed look at how the dynamic loading can change the strength and ductility of the slab-column connection.
Dynamic Debris Loading in Flat Plate and Steel Framed Buildings
Falling debris imparts a dynamic loading on the floor below. A simplified estimation of this loading depends on the amount of kinetic energy transmitted from the upper floor during impact. The kinetic energy of the impacting floor that is transferred to the impacted floor is first theoretically determined for the two extreme impact possibilities, namely fully rigid and fully plastic impact. Estimation of the falling debris loading is carried out for a reinforced concrete flat-plate system and compared to an earlier analysis using a steel framed composite building. Theoretically, a plastic impact results in an amount of energy imparted to a lower floor of 33% and 37.5 % of the initial kinetic energy of the falling floor for the reinforced concrete flat plate building and composite steel-concrete framed building, respectively. For a rigid impact this value is between 44%–97% for reinforced concrete flat plate and 41%–98% for steel framed building. The relative impact loads and ability of the impacted floors to arrest the progressive collapse is also analyzed. For both the concrete flat plate buildings and steel frame, the impacted floor is highly unlikely to withstand an impact from the floor above. The analysis of the flat-plate system includes a detailed look at how the dynamic loading can change the strength and ductility of the slab-column connection.
Dynamic Debris Loading in Flat Plate and Steel Framed Buildings
Jawdhari, Aamer (Autor:in) / Orton, Sarah (Autor:in) / Izzuddin, Bassam (Autor:in) / Cormie, David (Autor:in)
Structures Congress 2018 ; 2018 ; Fort Worth, Texas
Structures Congress 2018 ; 299-310
17.04.2018
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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