Damage Effect of Terrorist Attack Explosion-induced Shock Wave in a Double-deck Island Platform Metro Station
Authors
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Zihan Liu
AffiliationFaculty of Engineering, China University of Geosciences, 430074 Wuhan, China
School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, 200240 Shanghai, China
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Nan Jiang
Affiliation
Faculty of Engineering, China University of Geosciences, 430074 Wuhan, China
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Chuanbo Zhou
Affiliation
Faculty of Engineering, China University of Geosciences, 430074 Wuhan, China
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Lin Ji
Affiliation
Faculty of Engineering, China University of Geosciences, 430074 Wuhan, China
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Xuedong Luo
Affiliation
Faculty of Engineering, China University of Geosciences, 430074 Wuhan, China
Abstract
The objective of this research was to reasonably assess the damage to people and station structures caused by terrorist attack explosion at metro stations, taking the Liyuan station of Wuhan metro which adopts double-deck island platform as an typical example. The TNT explosion process inside the metro station was calculated and analyzed using the dynamic finite element numerical simulation software LS-DYNA. First, the peak overpressure curve and the positive pressure time curve of the shock wave of explosive under the condition of confined space in the metro station were obtained. Then, through the comparison and analysis of the theoretical formulas of explosive shock wave propagation characteristics, the accuracy and reliability of numerical calculation methods and model parameters were verified. At last, combining with the overpressure criterion of shock wave in explosive air, the distribution characteristics of the casualties in the metro station under the explosion shock wave are analyzed, and the dynamic response and damage effect of the pillar structure of the metro station under the explosion shock wave are studied.
