爆炸荷载下不同钢纤维含量的方钢管SFRC柱的动力响应

Dynamic Response Analysis of Square SFRC Filled Steel Tubular Columns with Different Steel Fiber Volume Factors Under Blasting Loading

以方钢管SFRC柱为研究对象,运用显示动力学有限元软件建立三种工况下的模型,通过对比三者间位移、速度、等效应力等动力响应参数间的差异,分析近距离爆炸荷载下钢纤维含量对柱体动力响应的影响.结果表明:当方钢管SFRC柱中钢纤维含量为3%时,对于提高柱体在近距离爆炸荷载作用下的抗爆性能效果最佳.

The paper aims to study square SFRC filled steel tubular column and establishes three models with different steel fiber＇s volumes factors by ANSYS/LS-DYNA, then analyses the influence of steel fiber＇s volume factor in dynamic response of the column under blasting loading by contrasting three maximal displacements, velocities, and effective stresses. The results show when steel fiber＇s volume factor is 3%,steel fiber plays the most efficient role in improving anti-detonating quality of square SFRC filled steel tubular column under close blasting loading.