【摘要】 为进一步验证循环荷载下钢材本构模型的适用性及广泛性,分别从材料及构件层次选取了国内外典型的循环试验结果对模型进行充分验证,包括钢材循环低周疲劳试验、钢构件循环加载试验、钢节点以及组合节点循环加载试验。并通过对比分析循环荷载下钢材本构模型与常用的两折线模型在构件及体系层次应用效果,充分说明了循环特性显著影响抗震性能,在今后的设计计算中需要引起重视。在此基础上,将钢材循环本构模型应用于一个十层钢框架结构抗震性能分析之中,验证了其用于钢结构体系在地震作用下弹塑性时程分析时的可行性,为钢结构的抗震分析提供了有力的工具。更多还原

【Abstract】 In order to verify the applicability and universality of a steel cyclic constitutive model,the domestic and abroad typical tests of both material and members were adopted,including low cycle fatigue tests of material,steel member test,steel and composite connection tests under cyclic loading pattern.Hysteretic characters significantly affect the aseismic behaviours by comparing the results of the proposed model and a bilinear model,which should be paid more attention on structure design.Base on the verified model,a ten floor frame was established,which proved the applicability of the proposed model for time history analysis under real earthquake waves.The proposed model provided a powerful tool for the aseismic analysis of a steel structure.更多还原