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该文来源于由清华大学和中国建筑学会抗震防灾分会建筑结构抗倒塌专业委员会组织的钢筋混凝土框架拟静力倒塌实验数值模拟的盲测竞赛。该文采用基于纤维截面的有限元模型以及通过修正斜压场理论确定节点域受力性能的方法,对钢筋混凝土框架柱、节点以及整体结构的拟静力实验进行了数值模拟,对比分析结果表明:分析结果与实验结果吻合较好,分析方法客观、合理、可靠,为以后的结构倒塌实验分析提供了理论指导。
This article comes from the blind test contest of pseudo-static collapse experimental numerical simulation of reinforced concrete frame organized by Tsinghua University and China Institute of Building Earthquake Resistance and Disaster Prevention Branch Building Structure Collapse Professional Committee. In this paper, the finite element model based on the fiber cross-section and the method of determining the mechanical behavior of the joint domain by modifying the baroclinic field theory are used to simulate the pseudo-static experiments of reinforced concrete frame columns, joints and the whole structure. The comparative analysis shows that The analytical results are in good agreement with the experimental results, and the analytical methods are objective, reasonable and reliable, which provide theoretical guidance for the later structural collapse analysis.