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通过对单自由度体系在不同类型地面运动作用下的弹塑性位移反应特性的研究，总结了结构在地震作用下的位移反应规律，为考虑塑性累积疲劳损伤的结构地震破坏准则的研究提供依据。
By studying the elasto-plastic displacement response characteristics of single-degree-of-freedom systems under different types of ground motions, the displacement response law of structures under earthquake action is summarized, which provides a basis for the study of structural seismic failure criteria considering plastic cumulative fatigue damage.