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To investigate the similarity of damage between reinforced concrete (RC) components of different scale ratios under explosive loading, this study employs the Π theorem from dimensional analysis to derive scaling relationships for the spalling diameter and mid-span deflection of RC slabs subjected to blast loads. The scaling laws for both the spalling diameter and mid-span displacement are thus established. By comparing finite element numerical models with scale ratios of 1:1, 1:2, and 1:3, the corresponding errors in spalling diameter and mid-span deflection are analyzed. The results suggest that, in near-field explosion experiments, the scaling ratio of RC slabs should be no less than 1:2 of the full-scale model to minimize the influence of size effects.

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Study on the Design Method of Scaled Models for Reinforced Concrete Slabs Under Explosive Loading

  • 会议论文

  • 发表日期：

    2026年

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  • Bin Guo,
  • Wenyan Liang

摘要

To investigate the similarity of damage between reinforced concrete (RC) components of different scale ratios under explosive loading, this study employs the Π theorem from dimensional analysis to derive scaling relationships for the spalling diameter and mid-span deflection of RC slabs subjected to blast loads. The scaling laws for both the spalling diameter and mid-span displacement are thus established. By comparing finite element numerical models with scale ratios of 1:1, 1:2, and 1:3, the corresponding errors in spalling diameter and mid-span deflection are analyzed. The results suggest that, in near-field explosion experiments, the scaling ratio of RC slabs should be no less than 1:2 of the full-scale model to minimize the influence of size effects.