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从型钢混凝土本构关系入手引入接触面黏结滑移机制,讨论了在ANSYS模型中引入接触面黏结滑移机制模拟型钢混凝土柱的基本理论和具体方法。通过有限元模拟结果与已有文献实验结果的对比分析,验证了所采用的ANSYS模型模拟型钢混凝土柱进行承压性能分析的可靠性和准确性。对影响型钢混凝土柱承压性能的3个因素(配筋率、混凝土强度、含钢率)进行了有限元模拟分析,得出了各因素对刚度、延性和承载力3个方面的影响规律。研究表明:混凝土强度变化对构件刚度有所影响;在一定范围内,含钢率的增加可以有效提高构件的承载力;混凝土强度和配筋率的提高对改善构件延性有利。
Based on the constitutive relation of SRC, the bonding slip mechanism was introduced. The basic theory and concrete method of introducing the contact slip slip mechanism into the SRS column in ANSYS were discussed. The reliability and accuracy of the ANSYS model simulated steel reinforced concrete columns subjected to the analysis of the bearing capacity were verified by the comparison between the finite element simulation results and the experimental results of the existing literature. The influence factors of three factors (reinforcement ratio, concrete strength, steel ratio) on the bearing capacity of SRC columns were analyzed by finite element method. The influence of each factor on the three factors of stiffness, ductility and bearing capacity was obtained. The results show that the change of concrete strength has an impact on the stiffness of the component. Within a certain range, the increase of the steel content can effectively improve the bearing capacity of the component. The improvement of concrete strength and reinforcement ratio is beneficial to the ductility of the component.