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对受力-变形性能机理进行理论分析,建立相应的力学模型.在考虑材料与几何非线性的基础上,采用接触问题的弹塑性大变形有限元分析方法通过对循环荷载作用下的T形件连接的有限元模拟,研究发现,T形件厚度对整个连接的滞回性能、破坏模式、承载能力等都有显著影响,T形件翼缘厚度不宜过薄,其厚度应该满足构件的延性要求.大部分的T形件梁柱连接都表现出足够的延性,试件所达到的最大移角几乎均超过0.03 rad,有的甚至达到0.055 rad.
Based on the analysis of material and geometrical nonlinearity, the elasto-plastic large deformation finite element method of contact problem is adopted to analyze the mechanics model of T-shaped part under cyclic loading The results show that the thickness of T-piece has a significant influence on the hysteretic behavior, failure mode and bearing capacity of the whole connection. The thickness of T-piece flange should not be too thin, and its thickness should meet the requirement of ductility . Most of the T-beam connections show sufficient ductility, with the maximum angle of most of the specimens reaching more than 0.03 rad and some reaching 0.055 rad.