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建立了多相破坏的理论模型,提出了对于小试块的破坏特征分析采用碎块面积分布统计的方法来评估其破坏能力,开展了多相破坏验证实验.结果表明:随着爆炸破坏强度的增大,混凝土碎块的数量增多,特别是低于2cm2的碎块数量明显增多,而面积较大的碎块数量减少.对单一气相和气固两相破坏特征进行了实验对比分析,发现在爆炸冲击波传播方向和侧面,气固两相破坏都比单相破坏大,表现为碎块数量增多.
The theoretical model of multi-phase failure is established, and the failure characteristic analysis of small test blocks is proposed to evaluate the failure ability of the test pieces by using the statistical method of area distribution of fragments, and the multi-phase failure verification experiment is carried out. The results show that with the failure intensity Increased, the number of concrete fragments increased, especially the number of fragments below 2cm2 increased significantly, while the number of larger fragments decreased.A single gas phase and gas-solid two phase damage characteristics of the experimental comparative analysis showed that in the explosion Shock wave propagation direction and the side, the destruction of gas-solid two-phase damage than single-phase, showing an increase in the number of fragments.