接触爆炸对底部有土垫层纤维混凝土板破坏效应试验研究

Experimental investigation on contact explosion damage effect to fiber reinforced concrete slab with soil bedding

1.
Building Design & Research Academy of Canbao, Beijing 100850, China;
2.
Engineering Institute of Engineering Corps, PLA University of Science and Technology, Nanjing 210007, Jiangsu, China

摘要: 采用钢纤维混凝土、聚丙烯纤维混凝土、钢筋混凝土3种材料共24块板试件进行了接触爆炸试验。对试验现象进行了描述，由迎爆坑尺寸拟合分析得到了3种材料的爆炸介质压缩系数。采用ЛяхоB公式对试验测得的土压峰值进行了拟合分析，结果表明，随试件厚度的增加，砂土中应力波峰值衰减更显著，相同比例爆距的土压值明显减小，并由试验结果得到了底部有土垫层介质情况下混凝土板临界爆炸贯穿厚度计算公式。
- 爆炸力学 /
- 破坏效应 /
- 接触爆炸 /
- 纤维增强混凝土 /
- 爆坑
Abstract: Experimental study of the response of the concrete, steel fiber reinforced concrete and polypropylene fiber reinfored concrete slab under blast loading was performed. The macroscopic damage is described, and the explosive compression coefficient values of three kind materials are obtained through apparent crater size fitting analysis. The ЛяхоB formula is used to fit the measured peak stress. The result shows that as the specimen thickness increases, the peak stress value will decrease, and the pressure value at same explosion distance will decrease as well. A formula that can be used to calculate the explosion perforation depth is obtained.
- mechanics of explosion /
- damage effect /
- contact explosion /
- fiber reinforced concrete /
- crater