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结合中国科学技术新馆工程在试验研究的基础上,对型钢混凝土柱-钢桁梁组合节点的抗震性能进行理论分析。讨论了六种目前常用的型钢混凝土柱-实腹式钢梁组合节点的节点区抗剪承载力计算公式,并对赵鸿铁学者提出的公式作了相应的改进,以更好地反映腹板加劲肋对节点抗剪承载力的贡献。这些公式用于本文研究的节点均偏于安全,考虑组合作用的改进后的赵鸿铁公式以及唐九如公式和试验结果吻合良好。该文还进一步讨论了破坏模式对节点抗震性能的影响,提出了在设计和分析中控制破坏模式的方法和建议。该文还利用通用有限元程序MSC.MARC(2005r2)对节点进行非线性有限元全过程数值模拟,取得了满意的结果。该文的研究结论为型钢混凝土柱-钢桁梁组合节点在工程中的应用提供了有益的参考。
Combining the project of China Science and Technology Museum, based on the experimental study, the seismic performance of the composite steel-reinforced concrete column-steel truss composite joints is analyzed theoretically. The formulas for calculating the shear strength of six joint sections of the commonly used steel-concrete column-solid-steel composite beam are discussed and the formulas proposed by Zhao Hong-Tie Scholars are improved accordingly to better reflect the web stiffeners Contribution to the shear strength of joints. These formulas are used in the study of this node are biased to safety, considering the combination of improved Zhao Hongtie formula and the Tang Jiuru formula and the test results agree well. The paper further discusses the impact of failure modes on the seismic performance of joints, and presents methods and suggestions for controlling failure modes in design and analysis. In this paper, we use the finite element program MSC.MARC (2005r2) to simulate the whole process of the nonlinear finite element method with satisfactory results. The conclusion of the paper provides a useful reference for the application of SRC-steel truss composite joints in engineering.