钢筋混凝土板抗钻地弹贯穿系数的计算方法  

Computation methods of perforation coefficient of reinforced concrete structure impacted by penetration projectiles

作　　者：吴华杰[1,2] 宋春明[1] 王明洋[1] 

机构地区：[1]解放军理工大学工程兵工程学院,江苏南京210007 [2]总参工程兵第四设计研究所,北京100850

出　　处：《解放军理工大学学报（自然科学版）》2010年第2期106-111,共6页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家安全重大基础研究计划资助项目(51309-1-7)

摘　　要：为深入研究穿地弹对钢筋混凝土板的贯穿问题,着重分析了贯穿块形成后钢筋混凝土板中混凝土、箍筋、纵向钢筋等要素的作用机理,以及各要素在不同时刻、不同阶段的变形和受力情况,提出了钢筋混凝土板的新型贯穿计算模型。根据此模型,可以确定弹体、贯穿块在贯穿过程中所受到的阻抗力,从而得到弹体和贯穿块的运动方程。结合贯穿系数的定义,可以求解出混凝土板的贯穿系数和钢筋混凝土板的贯穿系数。通过计算结果分析,得出了混凝土板的贯穿系数随弹体侵彻深度hq值的增大而减小,随弹体直径的增大而增大。并与国内外经验公式对比,验证了贯穿系数计算方法是建立在坚实的物理基础上,具有宽广的尺度效应。To study the perforation of projectile into reinforced concrete slab, the function mechanisms of the structural elements including concrete, hooped reinforcement and longitudinal reinforcement were stressedly investigated, the statuses of deformations and forces were also analyzed, and accordingly the new computational model of perforation was established. By use of the model, the resistances of the projectile and perforation block were gained, the dynamic equations of the projectile and the perforation block were proposed, and the perforation coefficients of concrete structures and reinforced concrete structures were solved combined with the definition. By calculating and analyzing, it is showed that the higher the penetration depth, the lower the perforation coefficient, and that the perforation coefficient increases with the diameter of the projectile. By comparison with the current empirical formulae, the proposed means of perforation coefficients based on the rationality of the computation method were validated. The result is accurately reliable, which has broad scale effect.

关 键 词：侵彻 贯穿 贯穿系数 钢筋混凝土 弹体 

分 类 号：O385[理学—流体力学]