结构中爆炸泄入坑道内部空气冲击波超压工程计算方法

Engineering calculation method of air shock wave overpressure induced by explosion inside the tunnel

从量纲分析出发建立了结构中爆炸坑道工程内部空气冲击波超压强度的无量纲函数,结合结构中爆炸泄入坑道中冲击波传播试验实测结果得到了冲击波的工程计算方法,包括结构中爆炸坑道内的冲击波超压分布、与坑道内爆炸相比的药量等效系数、有无结构的冲击波超压折减系数的算法等。

In this paper,a dimensionless function of the overpressure of air shock wave induced by explosion inside the tunnel is established by means of dimensional analysis,and the methods to calculate overpressure of shock wave are proposed by analysis of experimental results,which include overpressure distribution in the tunnel and equivalent coefficient of explosion inside the tunnel,and reduction coefficients of overpressure.