内壁腐蚀混凝土管道爆破动力失效机制

黄一文,蒋楠,周传波,李海波,罗学东,姚颖康

Dynamic failure mechanism of concrete pipeline with corroded inner-wall subjected to blasting

Yi-wen HUANG,Nan JIANG,Chuan-bo ZHOU,Hai-bo LI,Xue-dong LUO,Ying-kang YAO

表 5 不同截面的最大主应力和振速统计

Tab.5 Statistics of maximum principal stress and vibration velocity of different sections

h/mm vm/(cm·s−1) σm/MPa h/mm vm/(cm·s−1) σm/MPa h/mm vm/(cm·s−1) σm/MPa 0 12.45 0.87 10 18.34 1.79 20 18.30 1.78 0 12.21 0.82 10 16.24 1.48 25 18.24 1.98 0 16.84 1.37 10 15.66 1.40 25 21.03 2.31 0 14.24 1.03 15 16.56 1.66 25 22.14 2.45 0 10.89 0.66 15 18.82 1.79 25 20.89 2.23 5 13.88 1.26 15 20.26 1.89 25 17.06 1.89 5 15.01 1.41 15 18.73 1.70 30 19.46 2.23 5 17.55 1.58 15 16.35 1.59 30 22.10 2.70 5 15.80 1.48 20 19.00 1.89 30 22.87 2.92 5 13.25 1.22 20 20.29 2.10 30 21.20 2.50 10 16.81 1.52 20 21.89 2.16 30 21.87 2.68 10 15.62 1.43 20 19.16 1.88 — — —