摘要
通过大型有限元分析软件ANSYS/LS-DYNA,充分考虑钢筋和混凝土在结构倒塌时各自的受力状态和强度差异,运用分离式共节点模型模拟钢筋混凝土结构建筑物的爆破拆除倒塌过程。通过对倒塌过程中钢筋混凝土支撑立柱内侧和外侧的钢筋单元、混凝土单元的承载失效过程分析研究,对数值模拟效果与实际爆破效果对比分析得出:分离式共结点模型可以充分体现结构倒塌过程中钢筋和混凝土材料的承载失效差异,可以用来准确地模拟结构的倒塌过程。
The differences of the load-bearing state and the intensity were considered between steel and concrete while a structure collapsing.A common node separate model was adopted to simulate the collapse process of a reinforced concrete structure by using the finite element analysis software ANSYS/LS-DYNA.A series of analysis were carried out for the failure processes of the steel and concrete elements inside and outside the steel-reinforced concrete support pillars.And the simulated results were compared with the actual blasting results.It is shown that the common node separate model can describe the load failure differences between steel and concrete in the collapse process of the reinforced concrete structures.And it is feasible that the common node separate model is used to simulate the collapse process of the reinforced concrete structures.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2011年第4期349-354,共6页
Explosion and Shock Waves
关键词
爆炸力学
爆破拆除
分离式共节点
钢筋混凝土结构
mechanics of explosion
blasting demolition
common node separate model
reinforced concrete structure
