Existing buildings can be at a greater seismic risk due to non-conformance to current design codes and may require structural retrofitting to improve building performance. The performance of buildings is measured in terms of immediate consequences due to direct damage, but the continuing impacts related to recovery are not considered in seismic retrofit assessment. This paper introduces a framework of retrofit selection based on the seismic resilience of deficient buildings retrofitted with the conventional mitigation approaches. The assembly-based methodology is considered for the seismic resilience assessment by compiling a nonlinear numerical model and a building performance model. The collapse fragility is developed from the capacity curve, and the resulting social, economic, and environmental consequences are determined. The seismic resilience of a building is assessed by developing a downtime assessment methodology incorporating sequence of repairs, impeding factors, and utility availability. Five functionality states are developed for the building functionality given investigated time interval, and a functionality curve for each retrofit is determined. It is concluded that seismic resilience can be used as a performance indicator to assess the continuing impacts of a hazard for the retrofit selection.

中文翻译：

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钢筋混凝土建筑的抗震能力

由于不符合当前的设计规范，现有建筑物可能会面临更大的地震风险，并且可能需要进行结构改造以提高建筑物的性能。建筑物的性能是根据直接损坏造成的直接后果来衡量的，但是在地震改造评估中未考虑与恢复有关的持续影响。本文介绍了一种基于传统减灾方法进行改造的缺陷建筑的抗震能力的改造选择框架。通过汇编非线性数值模型和建筑性能模型，将基于装配的方法用于抗震性评估。崩溃脆弱性是根据容量曲线得出的，并确定了由此产生的社会，经济和环境后果。通过开发停机时间评估方法来评估建筑物的抗震能力，该方法结合了维修顺序，障碍因素和公用事业可用性。针对给定的调查时间间隔，针对建筑物功能开发了五个功能状态，并确定了每个改造的功能曲线。结论是，抗震性可以用作评估危害的持续性指标，以进行改型选择。