摘要
采用OpenSees中的非线性纤维单元对4根钢筋混凝土柱的拟静力试验进行了数值模拟。分析表明,非线性纤维单元能够较好地模拟构件的滞回性能,钢筋的屈服强度和硬化系数对模拟结果影响较大,考虑钢筋屈曲能比较准确地描述构件在破坏阶段刚度和强度的退化行为,与试验结果更为吻合。
The pseudo-static tests results of four RC columns are numerically modeled based on the nonlinear fiber element with OpenSees software. The experiment and simulated renhs are compared. It is found that the nonlinear fiber element can accurately simulate the hysteretic behavior of RC columns and the simulated results are sensitive to the strength, hardening ratio and buckling behavior of the reinforcements. In order to model the degradation in strength and stiffness of RC columns loaded to their failure, the buckling of reinforcements should be taken into account in simulation.
出处
《工程抗震与加固改造》
北大核心
2013年第5期30-35,60,共7页
Earthquake Resistant Engineering and Retrofitting
