Explosions bring a serious risk of damage or collapse when are produced inside buildings or in the close proximity. As the hazard intensity and possible effects are difficult to quantify, the structure should have the capacity to survive with inherent damages, thus preventing the progressive or disproportionate collapse. The measures for increasing progressive collapse resistance should be calibrated with reference to the type of structure analysed, and, in general, follow some common principles, e.g. hardening structural elements, providing additional load transfer routes or improving the continuity and tying. For existing buildings, strengthening may be necessary to provide or improve such abilities. In the paper, response against explosions of multi-story buildings is investigated and different intervention strategies are applied, considering both their efficiency and ease of application.
Keywords: gas explosion, accidental action, alternate load path, robustness.
ASI’s Extreme Loading for Structures was used by these researchers to perform their 3D nonlinear dynamic time-history based structural analysis. ELS is capable of modeling complex structures with detailed reinforcement in without the need to smearing or remeshing allowing engineers and researchers to more efficiently model real-world structures.
F. Dinu, I. Marginean, E. Ghicioi, V. Pasculescu, E. De Iuliis, and A. Khalil (2020). MEASURES FOR REDUCING VULNERABILITY OF BUILDING STRUCTURES DUE TO EXPLOSIONS. Proceedings of the SAFESUST2 – SURECON Workshop, pp24.