Incremental seismic rehabilitation (ISR) consists of a set of discrete rehabilitation actions in order to decrease initial costs and to avoid long-lasting disruptions. Nevertheless, there are few cases of incrementally retrofitted buildings and few studies about its economic feasibility. The objective of this work is to evaluate the differences between incremental and single-stage rehabilitation in terms of economic losses during the building’s life span. For this purpose, this work analyzes three rehabilitation proposals to improve seismic performance of typical school buildings. Based on P58 FEMA (Federal Emergency Management Agency) methodology, expected repair costs and benefits were calculated for each rehabilitation intervention. Results confirm the potential of ISR for improving essential buildings.

增量地震复原 (ISR) 由一组离散的复原行动组成，以降低初始成本并避免长期中断。然而，渐进式改造建筑的案例很少，关于其经济可行性的研究也很少。这项工作的目的是评估增量和单阶段修复在建筑物生命周期内的经济损失方面的差异。为此，这项工作分析了三个修复建议，以提高典型学校建筑的抗震性能。根据 P58 FEMA（联邦紧急事务管理局）方法，计算了每次康复干预的预期维修成本和收益。结果证实了 ISR 在改善基本建筑方面的潜力。