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对采用不同钢筋和混凝土单轴本构模型的钢筋混凝土框架结构在罕遇地震作用下的动力弹塑性分析结果进行了比较研究。基于ABAQUS中的纤维梁单元模型,采用不同钢筋和混凝土材料单轴本构关系,对罕遇地震作用下某超限钢筋混凝土框架结构进行了动力弹塑性时程分析,并对分析结果进行了比较。分析结果表明,基于不同材料本构得到的结构时程响应差别不大,材料单轴本构的选择对框架结构弹塑性时程分析结果无重大影响,其中将Opensees中的Concrete02和Steel02单轴本构组合时计算速度最快。
The results of dynamic elasto-plastic analysis of RC frame structures with different reinforced concrete and uniaxial constitutive model under rare earthquakes are comparatively studied. Based on the finite element model of fiber beam in ABAQUS and the uniaxial constitutive relationship of different steel bars and concrete materials, the dynamic elasto-plastic time-history analysis of an over-limit reinforced concrete frame under rare earthquakes was carried out and the results of the analysis were compared . The analysis results show that the time-history response of structures based on different material constitutive relations has little difference, and the choice of material uniaxial constitutive has no significant effect on the elasto-plastic time history analysis of the frame structure. Concrete02 and Steel02 uniaxial Structure combination of the fastest calculation speed.