干砂地基初始应力对爆炸波传播影响的模型试验

陈加浩,李俊超,朱斌,卢强,汪玉冰,管龙华,赵凤奎

Model test on influence of initial stress on blast wave propagation in dry sand foundation

Jiahao CHEN,Junchao LI,Bin ZHU,Qiang LU,Yubing WANG,Longhua GUAN,Fengkui ZHAO

表 3 爆炸波与初始应力动态卸载耦合作用下比冲量大小与占比

Tab.3 Magnitude and proportion of specific impulse under coupling effect of dynamic unloading of initial stress and blast stress

工况 (d/W1/3)/(m·kg−1/3) IΙ/(MPa·ms) PRΙ/% IΙΙ/(MPa·ms) PRΙΙ/% IΙΙΙ/(MPa·ms) PRΙΙΙ/% Is/(MPa·ms) CE-1 0.86 0.484 61.3 0.001 0.1 0.304 38.5 0.790 1.72 0.228 34.0 0.004 0.6 0.439 65.4 0.672 2.36 0.069 17.2 0.006 1.5 0.328 81.3 0.403 CE-2 1.08 0.160 25.3 0.265 41.9 0.208 32.9 0.633 1.72 0.247 29.1 0.047 5.5 0.555 65.4 0.848 2.36 0.056 11.8 0.026 5.5 0.395 82.7 0.478