泡沫混凝土抗爆性能的试验研究

Study on the knock characteristic of foam concrete

通过对自行设计的混凝土-泡沫混凝土-混凝土复合防护结构在爆炸冲击波作用下的吸能特性进行了试验研究,就不同密度的泡沫混凝土在复合防护结构中抗爆吸能作用进行了比较。结果表明:①复合防护结构中泡沫混凝土层具有明显的吸能作用;②随着泡沫混凝土密度的减小,经过该层后爆炸冲击波峰值应力、应变急剧衰减;③复合防护结构的抗爆吸能是以牺牲外层及泡沫混凝土来保护下层结构的。

The absorbing energy characteristic of composed fence structure designed as concrete-foam concrete-concrete under the shock wave of explosion is studied,and the antiknock characteristic and absorbing energy effect of different density foam concrete in composed fence structure is compared.The results show：①In composed fence structure the absorbing energy effect of the foam concrete is evident;②With the decrease of foam concrete density,peak stress and strain of the shock wave reduced sharply;③Composed fence structure＇s antiknock and absorbing energy effect is taking the outer foam concrete as sacrifice to protect understructure.