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本文研究了钢筋混凝土简支槽形板受冲击荷载作用的弹塑性反应。本文根据试验研究的结果,给出了考虑应变速率的混凝土和钢筋的应力-应变关系;考虑材料的非线性和应变速率的影响,以及截面刚度的变化,按广义单自由度体系对受冲击荷载作用的钢筋混凝土槽形板进行动力非线生全过程分析,并计算板的残余承载能力。
In this paper, the elasto-plastic response of reinforced concrete simply-supported trough plates subjected to impact loading is studied. Based on the results of the experimental study, this paper presents the stress-strain relationship between concrete and steel considering the strain rate; taking into account the nonlinearity of the material and the influence of the strain rate, as well as the variation of the section stiffness, the impact load is applied to the generalized single degree of freedom system. The effect of the reinforced concrete slotted plate is analyzed in the whole process of dynamic non-linearity, and the residual bearing capacity of the plate is calculated.