冲击载荷作用下钢筋混凝土结构动力响应仿真及损伤机理

为了进一步考察钢筋混凝土在受到荷载冲击时的动态响应结果,以期为今后工程钢筋混凝土应用提供指导,借助于专业有限元分析软件,采用仿真模型进行研究,在改变冲击荷载能量(钢球速度和质量)以及钢筋混凝土性能参数(抗压强度和配筋率)条件下,考察钢筋混凝土柱的柱中水平位移。结果显示,钢筋混凝土受到不同载荷冲击时,柱中水平位移不同,并且配筋率和轴心抗压强度对会影响水平位移。结论:为了提高钢筋混凝土,可以适当提高混凝土抗压能力,但不宜超过50 MPa,配筋率为0.019时比较经济,并且要结合工程实际情况来优化。

Dynamic response simulation and damage mechanism of reinforced concrete structures under impact loading

In order to further investigate the dynamic response results of reinforced concrete under load impact,in order to provide guidance for the application of reinforced concrete in the future.With the help of professional finite element analysis software,a simulation model is used to study.The columns of reinforced concrete columns are investigated under the conditions of changing the impact load energy(steel ball speed and mass)and the reinforced concrete performance parameters(compressive strength and reinforcement ratio).Medium horizontal displacement.The results show that when the reinforced concrete is impacted by different loads,the horizontal displacement in the column is different,and the reinforcement ratio and axial compressive strength will affect the horizontal displacement.Conclusion that in order to improve the reinforced concrete,the concrete′s compressive capacity can be appropriately increased,but it should not exceed 50 MPa.It is economical when the reinforcement ratio is 0.019,and it should be optimized in accordance with the actual situation of the project.