The importance of considering realistic blast waveforms and corresponding methods of assessing structural damage when conducting quantitative risk assessments

摘要

This paper briefly presents a detailed assessment of damage to a specific building component caused by a range of blast load forms. The building component in question is based upon the Northgate Building that was moderately-to-severely damaged during the 2005 Buncefield explosion. Blast loads resulting from vapour cloud and high explosive detonations are calculated using high-fidelity Computational Fluid Dynamics (CFD) simulations. Structural response is calculated using Finite Element (FE) simulations. P-I iso-damage curves are developed using these techniques as well as simplified SDOF methods. P-I iso-damage charts are presented and the differences between the responses to different blast load forms are highlighted. The importance of considering the blast load waveform is evaluated.