种 迅,汤婷婷,叶献国
反复荷载下钢筋混凝土柱数值模拟研究
种 迅,汤婷婷,叶献国
摘 要:为研究反复荷载下钢筋混凝土柱的数值模拟方法,在已有的8根钢筋混凝土柱低周反复加载试验的基础上,利用ANSYS通用有限元软件建立了基于实体单元的有限元模型,同时,利用OpenSEES有限元软件建立了基于纤维单元的有限元模型,并将两种不同建模方式的有限元结果进行了对比分析。结果表明:基于实体单元的限元模型与基于纤维单元的有限元模型在不同参数下的模拟结果与试验结果均有较好的吻合度;前者的计算的精度更高,而后者可以更形象直观地反映构件的破坏情况。
Abstract: In order to study the numerical simulation method of reinforced concrete columns under cyclic loading, the numerical simulation method using solid element by the finite element program ANSYS was presented first based on the existed quasi-static reversed cyclic loading tests of 8 reinforced concrete columns. Besides, fiber models of the columns were conducted using the program OpenSEES and the results were compared with the solid model. The results indicate that both solid element based model and fiber model can predict the hysteresis responses well. The hysteresis response predictions of the fiber model are a little better than those of the finite element model based on the solid element. The former can achieve a higher precision result and the latter can directly reflect the failure mode of the test specimen.
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