接触爆炸下全尺寸钢筋混凝土墙的毁伤特性研究  

Research on Damage Characteristics of Full-Scale Reinforced Concrete Walls

作　　者：张亚洲 石广豪 贾鑫[1] 黄正祥[1] Zhang Yazhou;Shi Guanghao;Jia Xin;Huang Zhengxiang(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《兵工自动化》2024年第12期55-61,79,共8页Ordnance Industry Automation

摘　　要：针对典型民用高层建筑物中的钢筋混凝土墙,对足尺寸的钢筋混凝土墙进行不同装药量的接触爆炸试验研究。通过3次接触爆炸试验,观察钢筋混凝土墙在不同装药量下的局部破坏模式和破坏特征,分析装药量对钢筋混凝土墙局部毁伤效应的影响;通过矫正之后的数值仿真模型对钢筋混凝土墙爆炸毁伤区域尺寸、钢筋的变形情况进行定量、定性的分析。结果表明:钢筋混凝土墙毁伤区域尺寸与炸药质量的立方根成线性关系;随着混凝土强度的增加,钢筋混凝土墙毁伤区域尺寸均有减小;钢筋混凝土墙毁伤区域中压缩坑、贯穿坑毁伤程度受钢筋的影响较小,随着混凝土墙体中钢筋强度和直径的增加,崩落坑的尺寸出现减小。In view of the reinforced concrete wall in a typical civil high-rise building,the contact explosion tests with different charges were carried out on the full-size reinforced concrete wall.Through three contact explosion tests,the local failure modes and failure characteristics of the reinforced concrete wall under different explosive charges were observed,and the influence of explosive charge on the local damage effect of the reinforced concrete wall was analyzed.Through the corrected numerical simulation model,the damage area size of the reinforced concrete wall and the deformation of the steel bar were quantitatively and qualitatively analyzed.The results show that there is a linear relationship between the damage size of reinforced concrete wall and the cube root of the mass of explosive,and the damage size of reinforced concrete wall decreases with the increase of concrete strength;The damage degree of compression pit and penetration pit in the damage area of reinforced concrete wall is less affected by the steel bar.With the increase of the strength and diameter of the steel bar in the concrete wall,the size of the caving pit decreases.

关 键 词：钢筋混凝土墙 接触爆炸 毁伤分析 数值计算 毁伤规律 

分 类 号：TJ515[兵器科学与技术—军事化学与烟火技术]