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为研究现浇和预制装配式混凝土扇形铅黏弹性阻尼减震框架抗震性能的差异性,对二层二跨预制装配式和现浇混凝土框架扇形铅黏弹性阻尼减震框架结构进行了低周反复加载试验,对比研究了两者的破坏模式、滞回耗能性能、承载能力、位移延性、强度退化、刚度退化等.结果表明:扇形铅黏弹性阻尼器在预制和现浇试验模型发挥的作用各有不同;预制构件节点位移较大,在后期阻尼器能减缓和控制节点核心区裂缝开展,保护节点;究现浇和预制装配式混凝土减震框架滞回曲线饱满,节点塑性变形能力强,刚度和强度退化曲线也较为平缓,提高节点抗震能力.
In order to study the difference of the seismic performance of cast-in-place and prefabricated prefabricated segmental lead-viscoelastic viscoelastic damped frames, low-cycle repetition was carried out on the frame structure of two-span two-span prefabricated and cast- Load tests, the failure modes, hysteretic energy dissipation performance, load carrying capacity, displacement ductility, strength degradation, stiffness degradation and so on were compared.The results show that the role of fan-shaped lead viscoelastic dampers in precast and in-situ test models The displacement of prefabricated members is larger and the dampers can slow down and control the cracks in the core of the node in the later stage to protect the joints. The hysteresis curves of cast-in-situ and prefabricated concrete vibration-damping frames are full, Stiffness and strength degradation curve is also more gentle, improve node seismic capacity.