【摘要】 由于其强大的非线性分析功能,OpenSees越来越广泛地被应用于结构的非线性分析当中。混凝土本构模型是钢筋混凝土结构非线性分析的基础。详细介绍了在OpenSees中添加新单轴材料本构的基本原理。Mander模型是应用最为广泛的箍筋约束混凝土本构模型之一,但OpenSees中尚未集成Mander模型。以Mander模型为例,介绍了箍筋约束混凝土单轴滞回本构关系的开发过程,并成功地将其集成到OpenSees中。最后用三个算例验证了新添加本构关系的实用性。更多还原

【Abstract】 Open Sees is widely used among the nonlinear analysis of structures for its powerful nonlinear analysis capabilities. The concrete constitutive model is the basis of nonlinear analysis for reinforced concrete structures. This article introduces the basic principles of adding new uniaxial material in Open Sees. Mander’s model is one of the most widely used constitutive model for confined concrete. But it has not be added to Open Sees. Based on Mander ’s model,a hysteretic model is added to Open Sees successfully. Finally,three examples are used to verify the practicality of the new material.更多还原