摘要
为了弄清采用空气分配层情况下遮弹层的震塌碎块冲击结构顶板引起的混凝土板的整体动力响应和局部破坏效应,利用系统能量平衡原理对冲击的整体响应进行分析,并利用有限元方法模拟了碎块与靶体的碰撞过程。结果表明:震塌碎块的冲击对混凝土板的破坏效应以局部破坏为主,冲击造成的结构整体作用可以忽略不计;板内设置钢筋网可以有效地减缓顶板结构内部裂缝的产生和背表面震塌的发生,顶板背表面粘贴钢板可以有效阻止板的震塌破坏。
For investigate on the dynamic response and local damage of top plate of structure under impact of the falling mass from blast layer on condition of air distribution layer.The whole response of the structure was analyzed by the theory of system energy balance,and the falling mass impacting the target was simulated by the FEM method.The result shows that the local damage of the concrete plate is predominant under the impact of the falling mass,the dynamic response of the whole structure could be neglected.The steel net embedded into the concrete plate can prohibit the emergence and development of the inner cracks in the concrete plate and the falling down of the concrete of back surface.The steel plate sticked on the back of the top plate can prohibit the damage of the concrete plate efficiently.
出处
《解放军理工大学学报（自然科学版）》
EI
2008年第1期52-56,共5页
Journal of PLA University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(50638030
50528808)
国家科技支撑计划资助项目(2006BAJ13B02)
关键词
成层式结构
空气分配层
震塌碎块
冲击
数值模拟
layered structure
air distribution layer
falling mass
impact
numerical simulation
