The loads of shock wave effect on fabricated anti-blast wail and distribution law around the wall were investigated by using near surface explosion test method and FEM. The pressure-time histories and variety law on t...The loads of shock wave effect on fabricated anti-blast wail and distribution law around the wall were investigated by using near surface explosion test method and FEM. The pressure-time histories and variety law on the foreside and backside of the anti-blast wall were adopted in the tests of variety of different explosion distances and dynamites, as well as in the comparison between the test and numerical calculation. The test results show that the loads of shock wave effect on the anti-blast wall were es- sen-tially consistent with calculation results using criterion under surface explosion when explosion dis- tances exceed 2 m, the distribution of overpressure behind wall was gained according to variety law based on small-large-small. It is also demonstrated that the peak overpressure behind wall had com- monly appeared in wall height by 1.5--2.5 multiples, and the peak overpressures of protective building behind wall could be reduced effectively by using the fabricated anti-blast wall.展开更多
基金Supported by National Natural Science Foundation of China(No.50578082,No.50678094)
文摘The loads of shock wave effect on fabricated anti-blast wail and distribution law around the wall were investigated by using near surface explosion test method and FEM. The pressure-time histories and variety law on the foreside and backside of the anti-blast wall were adopted in the tests of variety of different explosion distances and dynamites, as well as in the comparison between the test and numerical calculation. The test results show that the loads of shock wave effect on the anti-blast wall were es- sen-tially consistent with calculation results using criterion under surface explosion when explosion dis- tances exceed 2 m, the distribution of overpressure behind wall was gained according to variety law based on small-large-small. It is also demonstrated that the peak overpressure behind wall had com- monly appeared in wall height by 1.5--2.5 multiples, and the peak overpressures of protective building behind wall could be reduced effectively by using the fabricated anti-blast wall.
