钢筋混凝土柱在冲击荷载作用下破坏模式的研究

推导了钢筋混凝土柱在冲击荷载作用下弯曲型变形与直剪型变形两种单自由度模型动力反应计算公式,并尝试将构件几何尺寸、材料力学性能以及冲击荷载都作为随机变量,考虑荷载不同持时及不同峰值,用打靶法计算了一个实例构件在瞬时冲击荷载作用下的破坏概率,为初步判断构件的破坏模式提供依据。计算结果表明荷载持时与峰值是决定结构构件破坏模式的重要因素。

Investigation into Failure Mode of RC Members Subjected to Impulsive Loading

The solution for computation of two kinds of SDOF system model,either in flexural response mode or in direct shear response mode for RC columns subjected to impulsive load,was derived.Attempt was also made to investigate the failure probability of RC columns varying with several random factors,such as peak value of impulsive load,geometrical dimension and material properties etc.,which were treated as random variables.An example is demonstrated in the way a structural column is exposed to various combinatio...