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<p>This study simulates a single strike by a standard explosive UAV (drone) on a third-level protective structure (in accordance with the “Krayina-Fortetsia” concept). The impact-explosive load, applied as a pulse at three points, is considered, with the parameters determined in accordance with UFC 3-340-02. Modeling and calculations were performed in the LIRA-FEM software package to determine the forces in the roof slab, main beams, and columns. The primary assessment of reinforced concrete elements involved determining the required reinforcement contribution, highlighting the importance of using fiber-reinforced concrete under high loads. Despite this, the columns required an increase in their cross-section, indicating the need for more rational, modern solutions. The developed calculation model has demonstrated the high resistance of the third-level protective structure to single impact-explosive loads.</p>

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UAV Kinetic means Striking Effect on a Third-level Protective Structure: Analytical Study

  • 期刊论文

  • 发表日期：

    2026年7月4日

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  • S. M. Koval,
  • D. S. Spivak,
  • E. V. Khomenko

摘要

This study simulates a single strike by a standard explosive UAV (drone) on a third-level protective structure (in accordance with the “Krayina-Fortetsia” concept). The impact-explosive load, applied as a pulse at three points, is considered, with the parameters determined in accordance with UFC 3-340-02. Modeling and calculations were performed in the LIRA-FEM software package to determine the forces in the roof slab, main beams, and columns. The primary assessment of reinforced concrete elements involved determining the required reinforcement contribution, highlighting the importance of using fiber-reinforced concrete under high loads. Despite this, the columns required an increase in their cross-section, indicating the need for more rational, modern solutions. The developed calculation model has demonstrated the high resistance of the third-level protective structure to single impact-explosive loads.