加载速率对钢筋混凝土框架柱动态特性的影响

利用有限元软件ABAQUS,分别对钢筋混凝土框架柱在准静力和高应变率动态加载条件下的响应进行了数值模拟.探讨了加载速率对构件承载力、破坏形式的影响,并且对比了数值模拟结果和试验结果.通过比较高应变率与准静态加载下的分析结果,分析了应变率效应对钢筋混凝土柱的影响.研究结果表明,当考虑应变率效应时,钢筋混凝土柱的动态力学行...

Effect of Loading Rate on Dynamic Characteristics of Reinforced Concrete Frame Column

The response for the reinforced concrete frame columns under quasistatic load and dynamicload with high strain rate are analyzed by finite element software ABAQUS.The influence of loading rate on loading capability,failure modes of reinforced concrete column was investigated,and the simulation results were compared with the test results.The results of high strain rate are compared with those of quasistatic to study the effects of strain rate on dynamic behavior of reinforced concrete columns.Results show that the dynamic behavior of reinforced concrete columns changed greatly when the strain rate effects were taken into account and the effects of strain rate were different for different axial compression ratio of reinforced concrete columns.For reinforced concrete columns subjected to dynamic load,there was an increase in load carrying capacity.Therefore,the strain rate effects should be considered properly in the seismic analysis of reinforced concrete structures.