The seismic vulnerability of concrete structures has prompted the development of innovative approaches to enhance earthquake resistance. Recent earthquakes have demonstrated the challenges of repairing concrete buildings damaged beyond feasible restoration. In response, research in structural engineering has increasingly focused on damage-resisting reinforced concrete walls, offering improved self-centering behavior and damage mitigation compared to traditional counterparts. Self-centering walls, employing a rocking mechanism, exhibit effective damage minimization and residual deformation reduction. This study introduces a robust approach to precast reinforced concrete walls, comprising a precast reinforced concrete shear wall integrated with an external energy dissipation component. The energy dissipation element, a reinforced concrete column attached externally on both sides of the wall, acts as a new damage-limiting component with enhanced energy dissipation capacity. Utilizing the general-purpose Finite Element (FE) software ABAQUS, a three-dimensional simulation of experimentally investigated self-centering precast reinforced concrete walls was developed. The finite element model was validated and subsequently employed to assess the performance of the proposed system under cyclic loading. Various design parameters of the reinforced concrete energy dissipation element, including cross-sectional area, wall height proportion, concrete strength, primary reinforcement yield strength, and reinforcement ratio, were investigated. Additionally, the suggested system underwent cyclic loading in multiple scenarios simulating subsequent earthquakes. The finite element analysis results indicate that the proposed method, with a well-designed energy dissipation element, ensures minimal damage, a controlled increase in lateral resistance, sufficient energy dissipation capacity, and the required resilience following successive seismic events.

中文翻译：

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一种带有外部阻尼器的自定心预制钢筋混凝土墙的新型弹性系统

混凝土结构的地震脆弱性促使人们开发出增强抗震能力的创新方法。最近的地震表明，修复受损的混凝土建筑面临着超出可行修复范围的挑战。为此，结构工程的研究越来越关注抗损伤钢筋混凝土墙，与传统墙体相比，它具有改进的自定心性能和减轻损伤的能力。自定心墙采用摇摆机构，可有效减少损伤并减少残余变形。本研究介绍了一种稳健的预制钢筋混凝土墙方法，包括与外部耗能组件集成的预制钢筋混凝土剪力墙。消能元件是一根外附在墙体两侧的钢筋混凝土柱，作为一种新型的损伤限制构件，具有增强的消能能力。利用通用有限元 (FE) 软件 ABAQUS，开发了经过实验研究的自定心预制钢筋混凝土墙的三维模拟。有限元模型经过验证，随后用于评估所提出的系统在循环载荷下的性能。研究了钢筋混凝土耗能构件的各种设计参数，包括横截面积、墙高比例、混凝土强度、主筋屈服强度和配筋率。此外，建议的系统在模拟随后地震的多种场景中经历了循环载荷。有限元分析结果表明，该方法通过精心设计的耗能单元，确保了损伤最小化、侧向阻力可控增加、足够的耗能能力以及连续地震事件后所需的恢复力。