Blast Wave Propagation and Casualty Distribution Evaluation in the Subway Station Subjected to Internal Blast Loading

Abstract

Subway station in modern cities is a densely populated area and is an enclosed space. In the event of sudden explosions, it not only can easily cause a large number of casualties, but also result in economic losses and abominable social impact. It is intended in the paper to establish a finite element model of the typical subway station with LS-DYNA software to analyze the blast wave propagation and evaluate the casualty’s distribution. The blast wave propagation and overpressure peaks based on the scaled distances have been analyzed. Compared to other papers with the overpressure evaluation standards to analyze the personnel injury degree, a new evaluation standard which analyzes the personnel injury degree with the finite element dummy and the simplified explosion effect is put forward in the paper. Combined with the structure form of the subway station, the casualty distribution can be obtained.