首页|地下直墙拱结构内爆试验及超压简化计算研究

地下直墙拱结构内爆试验及超压简化计算研究

扫码查看
针对有端墙和大门封闭的地下直墙拱结构内爆问题,通过缩尺结构内爆试验及数值仿真分析,按不同当量炸药、不同部位,研究了冲击波超压的变化规律.仿真结果基本与测试数据吻合,冲击波到达时间与爆距正相关,即爆距短,到达时间快;侧壁、拱顶等处的超压峰值随比例距离增大而迅速衰减,符合爆炸冲击波的指数衰减规律.综合对比内爆试验数据、仿真分析结果及有关经验规范,提出了内爆冲击波超压峰值简化计算公式,研究表明该公式能较好地揭示结构内爆冲击波规律.
Experimental and overpressure simplified computational study of underground straight-wall arch structures under internal explosions
Aiming at the issue of internal explosions in underground straight-wall arch structures with end walls and large doors sealed,this study investigates the variation rules of shockwave overpressure through the internal ex-plosion of reduced scale structure.The research covers different equivalent explosives and locations.Simulation re-sults generally align with test data,revealing that the arrival time of the shockwave is positively correlated with the explosive distance,meaning a shorter distance results in faster arrival times.The peak overpressure values at loca-tions such as side walls and arch tops rapidly decay with increasing scaled distance,following the exponential decay law of explosive shockwaves.Through comprehensive comparisons of internal explosion test data,simulation analy-sis results,and relevant empirical standards,a simplified calculation formula for shockwaves peak overpressure of internal explosion is proposed.The study demonstrates that this formula effectively reveals the rules of shockwaves in internal explosive events within the structure.

underground straight-wall arch structureinternal explosion testshockwave overpressuredynamic fi-nite element

王后裕、刘彦泉、丁然、万广通、张彤、言志信

展开 >

中国人民解放军 93204 部队,北京 100068

清华大学,北京 100084

兰州大学,甘肃 兰州 730000

地下直墙拱结构 内爆试验 冲击波超压 动力有限元

2024

防护工程
总参谋部工程兵科研三所

防护工程

影响因子:0.2
ISSN:
年,卷(期):2024.46(1)
  • 14