此外，钢筋混凝土梁的尺寸效应研究已有6个多世纪的历史，现阶段尺寸效应的

In addition, the size effect of reinforced concrete beams has been studied for more than 6 centuries. At this stage, most of the size effect studies are aimed at the analysis of the nominal strength under static load, and the lack of the size effect of the maximum displacement of the reinforced concrete beam under impact load Based on this research, this paper studies the dynamic response of RC beams under bending and impact under impact load through experiments, equivalent model calculation and LS-DYNA finite element analysis. The main research work of this paper is as follows:

此外，钢筋混凝土梁的尺寸效应研究已有6个多世纪的历史，现阶段尺寸效应的研究大都针对静载作用下名义强度的分析，缺乏对冲击荷载作用下钢筋混凝土梁的最大位移尺寸效应的研究，基于此，本文通过试验、等效模型计算及LS-DYNA有限元分析对冲击荷载作用下弯曲破坏RC梁的动力响应进行研究，本文的主要研究工作如下：

In addition, the research on the size effect of reinforced concrete beams has a history of more than six centuries. At present, most of the research on the size effect is focused on the analysis of the nominal strength under static load, which lacks the research on the maximum displacement size effect of reinforced concrete beams under impact load. Based on this, this paper studies the impact load through experiment, equivalent model calculation and LS-DYNA finite element analysis The main work of this paper is as follows:<br>