Affiliations: School of Civil Engineering, Harbin Institute of
Technology, Harbin, Heilongjiang, China | Department of Civil and Environmental Engineering,
National University of Singapore, Singapore
Note: [] aCorresponding author: Yonghui Wang, Ph.D Candidate, Department
of Civil and Environmental Engineering, National University of Singapore,
Singapore. E-mail: wangyonghui@nus.edu.sg
Abstract: Explicit finite element programme LS-DYNA was used to simulate a
long-span steel reticulated shell under blast loading to investigate the
structural dynamic responses in this paper. The elaborate finite element model
of the Kiewitt-8 single-layer reticulated shell with span of 40 m subjected to
central blast loading was established and all the process from the detonation
of the explosive charge to the demolition, including the propagation of the
blast wave and its interaction with structure was reproduced. The peak
overpressure from the numerical analysis was compared with empirical formulas
to verify the credibility and applicability of numerical simulation for blast
loading. The dynamic responses of the structure under blast loading with
different TNT equivalent weights of explosive and rise-span ratios were
obtained. In addition, the response types of Kiewitt-8 single-layer reticulated
shell subjected to central explosive blast loading were defined.
