基于钢筋混凝土板抗爆响应的爆炸分类研究

Study on explosion classification based on reinforced concrete slab under explosion response

因为爆炸荷载的瞬时性和复杂性,所以鲜有学者对近远场爆炸分类进行研究。此外,钢筋混凝土(reinforced concrete,简称RC)板在近远场爆炸发生时的破坏模态是不同的。因此,首先基于对近距离、近场和远场爆炸下RC构件破坏模态的讨论对数值模型进行了可靠性验证;随后,通过数值模拟提出并验证了爆炸分类的界限值;最后,通过数值拟合提出了爆炸峰值超压的计算公式,以预测不同条件下的爆炸峰值超压。

Because of the instantaneous and complex nature of explosion load,few scholars have studied the classification of near and far field explosions.In addition,reinforced concrete(RC)slabs have different failure modes during near and far field explosions.Therefore,the reliability of the numerical model was first verified based on the discussion of the failure modes of RC component under close-in,near and far field explosions.Subsequently,the limit values of explosion classification were proposed and verified by numerical simulation.Finally,the calculation formula of explosion peak overpressure was proposed through numerical fitting so as to predict the explosion peak overpressure under different conditions.