混凝土墩接触爆炸毁伤研究  

Study on Contact Explosion Damage of Concrete Pier

作　　者：李先成 杜忠华 胡汪洋[1] 徐立志 郑贺龄[1] 王展翾 李欣田 王猛 LI Xiancheng;DU Zhonghua;HU Wangyang;XU Lizhi;ZHENG Heling;WANG Zhanxuan;LI Xintian;WANG Meng(School of Equipment Engineering,Shenyang University of Science and Technology,Shenyang 210100,China;School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]沈阳理工大学装备工程学院,辽宁沈阳210100 [2]南京理工大学机械工程学院,江苏南京210094

出　　处：《弹道学报》2025年第1期93-103,共11页Journal of Ballistics

基　　金：国家自然科学基金青年基金项目(12202207);中国博士后科学基金面上项目(2022M711623);江苏省自然科学基金青年基金项目(BK20220968);冲击与安全工程教育重点实验室(宁波大学)开放基金(CJ202201);工程材料与结构冲击振动四川省重点实验室开放基金(22kfgk03)。

摘　　要：为评估不同药量的矩形装药在混凝土墩体表面爆炸对墩体的毁伤效果,通过仿真对墩体的毁伤特性展开深入的探究,采用等毁伤曲线评估毁伤效果,阐明了混凝土墩体在冲击波作用后顶面位置、侧面位置和侧棱位置的毁伤特性,得到装药质量和装药放置位置对墩体毁伤效果的影响。构建易损性体积的函数模型,得到不同位置的毁伤情况,以及墩体剩余体积随装药质量的变化曲线,在此基础上比较了不同药量的矩形装药在混凝土墩体上8个不同位置接触爆炸时墩体的易损性差异,研究了爆炸后产生的大量碎块数量和最大碎块体积。研究结果表明:混凝土墩体顶面与侧面呈现出的毁伤区域形状大体为圆形,且该圆形中心和顶面中心处于重合状态;侧棱的毁伤区域形态接近椭圆形;装药在顶面、侧面和侧棱区域接触爆炸时,中心位置的毁伤效果最佳;当装药质量为1~3 kg时,炸药在混凝土墩体顶面几何中心位置爆炸的毁伤效果最佳;当装药质量大于3 kg时,在侧面几何中心位置爆炸的毁伤效果最好。In order to evaluate the damage effect of block charges with different masses on the surface of concrete pier body,the damage characteristics of the concrete pier under the action of contact explosion were studied by numerical simulation,and the damage effect of the concrete pier body was evaluated by the equal damage curve,and the characteristics of the damage area of the top surface,side and side edge of the pier body under the action of contact explosion were obtained,and then the influence of charge quality and placement position on the damage effect of pier body was revealed.By establishing the calculation model of vulnerable volume,the variation curves of the remaining volume of concrete pier body with the charge mass under the action of contact explosion on the top surface,side and side edge were obtained.On this basis,the block charge with different masses was compared in 8 different positions on the concrete pier body during contact explosion,and the number of large fragments and the maximum fragment volume after the explosion were studied.The result shows that the shape of the damage area on the top surface and side of the concrete pier is approximately circular,and its center coincides with the center of the top surface.The shape of the damage area on the side edge is approximately elliptical.When the charge explodes in contact with the top surface,side and side edges,the damage effect at the center position is the best.When the charge mass is 1-3 kg,the damage effect of the explosive exploding at the geometric center of the top surface of concrete pier is the best.When the charge mass is greater than 3 kg,the damage effect of the explosion at the side geometric center is the best.

关 键 词：矩形装药 混凝土墩体 接触爆炸 易损性 数值模拟 

分 类 号：TJ410.1[兵器科学与技术—火炮、自动武器与弹药工程]