Abstract Explosions due to terrorist attacks or accidents can cause severe damage to critical infrastructure. To protect important facilities from explosion damage, they can be constructed belowground. Further, an explosion mitigation layer can be used to provide additional protection. In this study, an expanded polystyrene (EPS) plate has been incorporated into the soil layer for blast mitigation, and the performance of the system has been investigated experimentally. The results indicate that there is an optimum ratio of sand layer thickness and EPS plate thickness for decreasing and dispersing blast pressures. Formulas describing the peak pressure and scaled impulse on the bottom of the mitigation system as functions of a scaled distance from directly under the explosion source and scaled layer thickness have been derived.

中文翻译：

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EPS板减轻地下防护结构爆炸的性能和评估

摘要 恐怖袭击或事故引起的爆炸会对关键基础设施造成严重破坏。为保护重要设施免受爆炸破坏，可将它们建在地下。此外，防爆层可用于提供额外的保护。在这项研究中，膨胀聚苯乙烯 (EPS) 板已被纳入土层以减轻爆炸，并通过实验研究了该系统的性能。结果表明，砂层厚度和EPS板厚度的最佳比例可以降低和分散爆破压力。已经推导出了描述缓解系统底部的峰值压力和比例脉冲的公式，作为距离爆炸源正下方的比例距离和比例层厚度的函数。