摘要
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。
The theoretical analysis is conducted for the aseismic behavior of steel reinforced concrete column-steel truss beam composite joints by the basis of the results of experimental research against the backdrop of China Science ＆ Technology Museum. Six current formulae calculating the shear capacity of steel reinforced concrete column-solid web steel beam joints are discussed, and the formula proposed by Zhao Hongtie is modified in order to account for the contribution of web stiffeners to the shear capacity of the joints. These formulae are conservative for calculating the shear capacity of the joints discussed in this paper and the modified Zhao Hongtie＇s formula and the formula given by Tang Jiuru, which both account for the composite effect, can precisely predict the shear capacity of the joints. Furthermore, how different failure modes influence the aseismic behavior of the joints is discussed and analytical or design methods to control the failure modes are also suggested. Finally, by using the general finite element program MSC.MARC（2005r2）, a full process nonlinear numerical simulation of these joints gives a satisfactory result. The conclusions are helpful for the application of steel reinforced concrete column-steel truss beam composite joints.
出处
《工程力学》
EI
CSCD
北大核心
2009年第11期152-160,171,共10页
Engineering Mechanics
基金
国家自然科学基金重点项目(90815006)
长江学者和创新团队发展计划项目(IRT00736)
关键词
型钢混凝土柱
钢桁梁
组合节点
理论分析
抗震性能
抗剪承载力
破坏模式
有限元分析
steel reinforced concrete column
steel truss beam
composite joint
theoretical analysis
seismic behavior
shear capacity
failure mode
finite element analysis
