带有耗能连梁的钢筋混凝土剪力墙结构地震损伤评估

Seismic Damage Assessment of Reinforced Concrete Shear Wall Structure with Coupling Beam Dampers

为了评估目前广泛研究的新型带有耗能连梁的剪力墙结构损伤程度,提出了一种适用于该结构的损伤模型,并通过低周反复试验结果对损伤模型进行验证。提出了该结构的地震性能等级及相应的损伤指数范围,并通过地震作用的增量动力分析得到该结构的易损性曲线,对该结构进行地震损伤评估。结果表明:提出的损伤模型能较好描述带有耗能连梁的钢筋混凝土剪力墙结构的损伤发展,地震性能等级及相应的损伤指数范围能较好反映该种结构的破坏等级,得到的易损性曲线能较为有效评估该种结构的损伤程度,为基于性能的新型带有耗能连梁的剪力墙结构的抗震设计及损伤评估提供了参考。

To evaluate the damage extent of the widely used reinforced concrete shear wall structure with coupling beam dampers,a damage model for this type of structure was proposed and verified by low-frequency cyclic test results.The performance levels and the corresponding damage index range were also proposed in this paper.Seismic damage assessment of this type of structure was conducted through fragility curves obtained from incremental dynamic analysis.Results showed that the proposed damage model properly described the damage evolution of the structure;the performance levels and the corresponding damage index range properly summarized the damage grades;and the seismic fragility curves effectively assessed the damage extent under different earthquake intensities.Combined,this paper provides a reference for performance-based design of this new type of structure.