A novel shelly cellular material made of PVC lining and foamed ceramics shell was developed in this paper.Large scaled explosion tests were performed to study the damage condition and energy absorption performances of civil defense engineering using sand or the novel shelly cellular material as the attenuation layer.The test results show that the energy dissipation capacity of the shelly cellular material is better than that of sand,and the maximum stress in the test using novel material as the attenuation layer decreases by about 50％ compared to that when using sand as the attenuation layer under the same explosion loading.In addition,the damage degree is much smaller compared with the conventional shelly cellular material.Therefore,it can be concluded that the novel shelly cellular material can significantly improve the capability of civil defense engineering and have broad prospects of military application.%研发了一种内衬PVC壳体,外裹泡沫陶瓷壳体的新型空壳颗粒作为人防结构分配层.通过大比尺化爆实验,研究了爆炸载荷下新型空壳颗粒分配层人防结构和普通黄沙分配层人防结构的破坏情况和冲击波传播规律.实验证明:同样当量爆炸载荷下,相对黄沙分配层,新型空壳颗粒分配层可以降低应力峰值50％左右;相对常规空壳颗粒,新型空壳颗粒分配层受损情况显著减小.这表明:新型空壳颗粒作为人防工程的分配层兼具显著的削波耗能效果和抵抗二次爆炸的能力,因此可以提高人防工程的抗爆能力,具有广阔的军事应用前景.
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