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本文通过三组钢筋混凝土压弯构件模型的振动台主余震模拟试验和周期性抗震静力试验，初步给出了建立有损伤压弯构件恢复力骨架曲线的一般方法，并在此基础上就不同情况具体给出了随机主余震作用下结构层恢复力骨架曲线的建立步骤，从而为结构在主余震作用下的随机反应分析奠定了基础。最后，通过算例分析，得出了余震对结构破坏的影响。
In this paper, the main method of shaking table main aftershock simulation and cyclical anti-seismic static test of three groups of reinforced concrete bending and bending member models are used to preliminarily give the general method to establish the skeleton curve of the restoring force of members with damage and bending, and on the basis of this In this case, the steps for establishing the skeleton force of the structural layer under the action of random main aftershock are given, which lays a foundation for the analysis of the random response of the structure under the action of the main aftershock. Finally, through the example analysis, the influence of the aftershock on the structural damage was obtained.