基于Opensees的钢筋混凝土柱数值模拟

Numerical simulation of reinforced concrete column based Opensess

Opensees中提供了丰富的纤维材料本构模型,能够方便地对结构进行模拟分析。本文采用基于纤维模型的Opensees程序对钢筋混凝土柱在往复加载下的受力行为进行数值模拟,混凝土本构模型为Concrete02线性受拉软化模型,钢筋本构模型为Steel02单轴各向同性应变硬化模型,为了考虑钢筋的屈曲影响而对钢筋的屈服强度进行了折减,将模拟结果与试验结果进行比较,可以发现,基于Opensees的纤维单元模型对钢筋混凝土柱拟静力试验能够得到较理想的模拟结果,为Opensees程序用于钢筋混凝土柱的数值模拟提供一点参考。

Opensees provids the rich fiber material constitutive model, and can be taken to simulate the behavior of structure conveniently. This article uses the Opensees program based on fiber model to simulate the mechanical behavior of reinforced concrete column under cyclic loading. The concrete constitutive model was linear tensile softening model Concrete02 and uniaxial isotropic strain hardening model Steel02 was for reinforced constitutive model. In order to consider the buckling effect of longitudinalreinforcement, the reduction of yield strength of steel was considered. Compared to the experimental results, it can be found that simulation results can get ideal results, and provide references for Opensees program used in the numerical simulation of the reinforced concrete column.