Predicting Fragment Velocity of Masonry Walls Subjected to Blast
Publication: Structures Congress 2022
ABSTRACT
Secondary fragments generated by the breakup of structural and non-structural elements during blast loading can pose a significant hazard to building occupants. Ungrouted and nonreinforced concrete masonry unit (URN CMU) walls can generate significant secondary fragments. Full-scale and quarter-scale CMU walls were exposed to blast loading, and their responses were recorded. A computationally efficient, energy-based, engineering-level methodology is developed to calculate the secondary fragment velocities of URN CMU walls. Measured fragment velocities from the experiments are compared with calculations from the analytical methodology, and strong correlation is observed. The analytical method is discussed, and comparisons between the analytical calculations and the observed results are presented.
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Structures Congress 2022
Pages: 60 - 68
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Published online: Apr 18, 2022
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