钢筋混凝土安全壳受撞击局部破坏作用计算  

Calculating Method for Local Damage of RC Containment Under Impact

作　　者：宋春明[1] 王明洋[1] 王德荣[1] 

机构地区：[1]解放军理工大学爆炸冲击防灾减灾国家重点实验室,南京210007

出　　处：《武汉理工大学学报》2013年第7期113-117,共5页Journal of Wuhan University of Technology

基　　金：国家创新研究群体科学基金(51021001);国家青年科学基金(51008305)

摘　　要：针对钢筋混凝土安全壳在事故撞击下的动力计算问题,建立了贯穿破坏的弹塑性计算模型,该模型考虑了安全壳的主要结构要素:混凝土、横向钢筋、纵筋和钢衬套的作用机理以及各结构要素的多阶段变形和受力特点,推导并给出了安全壳抗局部撞击的计算方法。计算分析表明,纵向钢筋网的整体作用是提供膜力,可等效为一定厚度的薄钢板;纵向配筋率、配箍率和钢衬套厚度均影响结构的抗力和变形,其中配箍率的影响最为显著。The elastic-plastic computation model of perforation was established to investigate reinforced concrete containment under accidental impact,the effects of main factors inclusive of concrete,hoop steel,longitudinal steel and steel lining and their characteristics of deformation and stress in multiple stage were taken into consideration,and the computing method was deduced and given for the containment under impact loadings.Through calculating and analyzing,it shows that the reinforcing steel net can be whole regarded as an equivalent steel plate for its effect of providing membrane force,the longitudinal steel reinforcement ratio,stirrup ratio and the thickness of steel lining do have effects on structure＇s resistance and deformation,especially the stirrup ratio.

关 键 词：钢筋混凝土 安全壳 撞击 局部破坏 贯穿 

分 类 号：TU312[建筑科学—结构工程]