内爆炸作用下抗爆单元防护隔墙厚度计算

Calculation of Thickness of Blast Wall of Antiknock Cell Under Internal Explosion

封闭空间发生内爆炸时,由于受到周围墙体的限制,作用荷载得以加强。文中分析了结构内爆炸荷载的组成,提出了内爆炸荷载作用下抗爆墙设计的解析计算方法。通过分析表明:准静态气体荷载与冲击波荷载相比较小,但两者之比及在墙体上产生的弯矩之比随加载密度的增加呈上升趋势;爆炸当量相同的条件下,室内地面长宽比对墙体上弯矩影响较大,长宽比越小,墙体上弯矩越小,长宽比为1时,墙体上弯矩达到最小。

Because of the restriction of the wall, the shock wave is reinforced when bombs explode in enclosed space. This paper analyzed the component of blast wave, posed the approximate analytical calculation method of blast-wall inside structures. It is indicated that,the quasi-static gas load is rather low Compared with the shock wave pressure, but the ratios between the two and the bending moment inflict on the wall are upward along with the increase of loading density. The same explosion equivalents explode in enclosed space, the length-width ratio affect the load inflict on the wall a lot. The ratio smaller, the load smaller, and when the ratio reaches 1, the load is the least.