By comparing damage and loss predictions with those observed for a 22-storey steel building with eccentrically based frames (EBF) that underwent the Canterbury earthquakes, this paper gauges the performance and explores the benefits of applying the PEER performance-based earthquake engineering assessment procedure. The study shows that steel EBF repair costs are significantly affected by the work required to remove and reinstate non-structural elements in order to access the steel structure. It is therefore concluded that the location of non-structural elements relative to structural elements should be considered in the seismic design of new buildings and within loss assessment procedures. Two retrofit and/or rehabilitation options are considered for the building; improving the deformation capacity of drywall partitions, and re-detailing the exterior cladding connections to better accommodate structural deformations. The findings show that, for the specific building, improving the drywall partitions should lead to a reduction in expected annual losses whereas the use of improved detailing for the precast concrete cladding would not. This suggests a general strategy for cost-effective decisions might be to focus on increasing the performance of the most vulnerable components (plasterboard partition walls, in this case). An examination of the potential effects of aftershocks to the selection of cost-effective options adds support to this conclusion. Aftershocks are found to increase the predicted losses by around 10%, emphasizing the need to consider aftershocks when assessing expected annual losses due to earthquakes.

通过将损坏和损失的预测与经历了坎特伯雷地震的22层带有偏心框架（EBF）的钢结构建筑的观察结果进行比较，本文评估了性能并探讨了应用基于PEER性能的地震工程评估程序的好处。研究表明，钢EBF的维修成本受到为进入钢结构而拆除和恢复非结构元素所需的工作的显着影响。因此得出的结论是，在新建筑物的抗震设计中以及在损失评估程序中应考虑非结构元素相对于结构元素的位置。该建筑物考虑了两种改造和/或修复方案；提高干墙隔板的变形能力，并重新设置外部覆层连接的详细信息，以更好地适应结构变形。研究结果表明，对于特定的建筑物，改善干墙间隔可以减少预期的年度损失，而对于预制混凝土覆层使用改进的细节则不会。这表明制定具有成本效益的决策的一般策略可能是集中于提高最易受伤害的组件（在这种情况下为石膏板隔墙）的性能。研究余震对选择具有成本效益的方案的潜在影响，为这一结论提供了支持。发现余震会使预计损失增加约10％，强调在评估地震造成的年度预期损失时需要考虑余震。