Simplified Evaluation Of A Building Impacted By A Terrorist Explosion
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D. Makovička & D. Makovička Jr.
This paper determines the parameters of the explosion wave excited by a charge planted by terrorists. A suitcase containing an industrial explosive (Danubit I, mass 6.45 kilogram) remotely controlled by mobile telephone was placed in the left-luggage office of a railway station. Certain simplified methods according to various publications, according to our own experimental results and according to 3D computations based on detailed calculation modelling of the interior of the room are compared to determine the explosive effects. Equivalent static analysis was applied to the dynamic response of the structural elements of the room (walls, floor, roof and windows). The damage caused to these structural elements is weighted on the basis of the angle of fracture of the central axis / surface, and on the basis of the limit stress state of these structures. Keywords: explosion, room structure, simplified analysis, dynamic response, failure prognosis. 1 Introduction When a small charge explodes in the internal space of a building, a pressure wave is formed by the explosion that applies a load on the surrounding internal elements of the structure (Figure 1). The pressure effects of even a small charge are usually high, and the primary consequence is that a window or a door structure may be broken and the pressure is released into the surrounding areas. Although the exhaust vents open, the load transmitted to the surrounding walls of the room, and to the ceiling and floors, is quite high, and the corresponding magnitude must first be estimated. This magnitude depends on numerous
xplosion, room structure, simplified analysis, dynamic response, failure prognosis