摘要
文中利用LS-DYNA程序研究了坑道被覆结构在常规装药爆炸作用下的局部破坏效应。通过数值模拟可直观了解爆炸冲击波在被覆结构中的传播及与周围围岩的相互作用和分析被覆结构的受力特点。计算结果表明在爆炸应力波作用下混凝土被覆结构在反射拉伸波的作用下产生局部震塌破坏。
LS-DYNA is employed to research the local damage effect of tunnel lining subjected to conventional subsurface blast. The propagation of the explosion wave and the mutual action between the mass rock and tunnel lining are better understood through the numerical simulation. The damage characteristics of reinforced eonerete lining under explosive load are analyzed. The result showed that the spalling failure of the reinforeed concrete lining is generated under the refleeted extensive wave.
出处
《弹箭与制导学报》
CSCD
北大核心
2009年第1期148-150,共3页
Journal of Projectiles,Rockets,Missiles and Guidance
基金
空军工程大学工程学院“优秀博士学位论文创新基金”(BC0510)资助
关键词
爆炸冲击波
坑道被覆结构
局部破坏效应
数值模拟
震塌
explosion shock wave
tunnel lining
local damage effect
numerical simulation
spalling
