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为了利用屈服后位移幅值与低周疲劳寿命之间的关系，建立抗震钢筋混凝土结构的更为合理的破坏准则，在完成了对称位移循环下钢筋混凝土柱低周疲劳性能的第一个试验系列后，着重介绍六根非对称位移循环下钢筋混凝土柱的累积损伤发育特声、及其低周疲劳寿命随位移幅值和正负位移幅值比的变化规律，并在此基础上给出了低周疲劳寿命与不同位移水平下正负位移幅值比之间关系的表达式。
In order to use the relationship between the displacement amplitude and the low-cycle fatigue life after yield, a more reasonable failure criterion for the seismic reinforced concrete structure is established, and the first experimental series of the low-cycle fatigue performance of reinforced concrete columns under the symmetrical displacement cycle is completed. Afterwards, we will focus on the cumulative noise development of reinforced concrete columns under six unsymmetrical displacement cycles, and the variation law of low-cycle fatigue life with displacement amplitude and amplitude ratio of positive and negative displacements. The expression of the relationship between the fatigue life and the amplitude ratio of positive and negative displacement under different displacement levels.