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以1∶4缩尺的6层再生混凝土空间框架结构模型为研究对象,完成了再生混凝土框架结构试验模型的振动台试验。基于再生混凝土框架结构动力试验,分析了随着台面输入地震波加速度幅值的不断增大再生混凝土框架结构滞回曲线的变化规律以及模型抗侧移刚度的退化规律,评估了输入不同地震波时结构的耗能。通过对试验模型结构整体和各层间滞回曲线分析,提出再生混凝土框架结构整体和层间能力曲线函数模型;通过能力曲线函数模型,对再生混凝土框架结构的位移延性进行评估;基于有限元数值模拟方法,比较分析了再生混凝土框架结构和普通混凝土框架的滞回特性。分析表明,再生混凝土框架结构性能与普通混凝土结构的近似,具有良好的耗能能力、位移延性和变形能力。该研究为再生混凝土结构的抗震优化设计,以及为再生混凝土制品的推广和应用提供了技术支持和理论依据。
Taking the 1: 4 scale 6-layer recycled concrete space frame structure model as the research object, the shaking table test of recycled concrete frame structure test model was completed. Based on the dynamic test of recycled concrete frame structure, the variation regularity of hysteretic curve of regenerated concrete frame structure and the degradation of lateral stiffness are analyzed with the increasing amplitude of seismic wave input on mesa. Energy consumption. Through the analysis of the whole structure of the test model and the hysteretic curve between the layers, the whole and inter-layer capacity curve function model of recycled concrete frame structure is put forward. The displacement ductility of recycled concrete frame structure is evaluated by the function curve function model. Based on the finite element analysis Simulation method, comparative analysis of the hysteretic characteristics of recycled concrete frame structure and ordinary concrete frame. The analysis shows that the performance of recycled concrete frame structure is similar to ordinary concrete structure, and has good energy dissipation capacity, displacement ductility and deformation capacity. The study provides the technical support and theoretical basis for the seismic design optimization of recycled concrete structures and for the promotion and application of recycled concrete products.