(“灾后重建专刊”稿件) 地震荷载作用下钢框架梁柱节点的低周疲劳损伤积累分析方法及探讨

根据目前报道的实验研究成果，本文介绍了钢框架梁柱节点低周疲劳损伤积累的分析方法。结合研究者提出的分析模型和设计规范，综述了梁柱节点寿命评估方法和低周疲劳损伤积累评估模型。重点包括S-N曲线、断裂力学和局部应变分析方法的比较，并对进一步的应用进行了探讨。最后为在国内进一步开展相关研究工作提出了建议。

Discussion on low-cycle fatigue damage accumulation assessment approaches of steel beam-to-column joint under seismic loading

Based on the current experimental studies, low-cycle fatigue damage accumulation assessment approaches of steel beam-to-column joint are presented. As a study of the current analytical models and design codes, investigations in the area of low-cycle fatigue life prediction and damage model are outlined. This includes the comparative studies of S-N line approach, fracture mechanics approach & local strain approach. Further application and development of these models are discussed. Finally, suggestions are given for further research work.