Many existing reinforced concrete buildings have been designed based on earlier codes of practice that underestimated seismic forces, making them vulnerable to damage during seismic action. Equipping existing buildings with shear links and eccentric braces is one of the available seismic retrofitting methods to dissipate seismic energy away from the main structural members. In this paper, a proposal for the seismic retrofitting of two existing reinforced concrete buildings using aluminium shear links and steel braces is presented. First, a capacity-based design approach is followed to determine the required sizes of the shear links and eccentric braces. Second, numerical analyses are used to compare how the original and retrofitted buildings responded. These tests include pushover analysis, nonlinear time-history analysis, damage analysis, incremental dynamic analysis, fragility and reliability analysis, and damage analysis. The results reveal that the proposed retrofitting method can sufficiently upgrade the performance level of the buildings and reduce their storey displacements and interstorey drifts, as shear links are found to absorb almost all seismic energy, therefore keeping other structural members responding elastically. Yet, using shear links alters the local behaviour of the surrounding structural members, which should be considered in the design process. Furthermore, compared to the original buildings, retrofitted buildings are expected to undergo less structural damage as they have lower damage indices. Meanwhile, the fragility of retrofitted buildings is significantly reduced compared to the original ones, which indicates the efficiency of the proposed retrofitting methods in upgrading the performance of seismically deficient reinforced concrete buildings.

许多现有的钢筋混凝土建筑是根据早期的实践规范设计的，这些规范低估了地震力，使得它们在地震作用期间容易受到损坏。为现有建筑物配备剪力连接和偏心支撑是可用的抗震改造方法之一，可将地震能量从主要结构构件上消散。本文提出了使用铝剪力杆和钢支撑对两座现有钢筋混凝土建筑进行抗震改造的建议。首先，采用基于能力的设计方法来确定剪力连接和偏心支撑所需的尺寸。其次，使用数值分析来比较原始建筑和改造后的建筑的反应。这些测试包括推覆分析、非线性时程分析、损伤分析、增量动态分析、脆性和可靠性分析以及损伤分析。结果表明，所提出的改造方法可以充分提高建筑物的性能水平，减少层间位移和层间位移，因为剪力连接几乎吸收了所有地震能量，从而保持其他结构构件的弹性响应。然而，使用剪力连接会改变周围结构构件的局部行为，这一点应该在设计过程中考虑到。此外，与原来的建筑相比，改造后的建筑预计会遭受更少的结构损坏，因为它们的损坏指数较低。同时，与原来的建筑相比，改造后的建筑物的脆弱性显着降低，这表明所提出的改造方法在提升抗震钢筋混凝土建筑性能方面的有效性。