This study presents a risk-based decision support framework for seismic retrofit of building structures where the decision criterion is to minimize the sum of the cost required for the rehabilitation and the expected seismic loss over a specified time period. Probabilistic seismic hazard model (PSHM) and probabilistic seismic demand model (PSDM) are utilized for manipulation of the uncertainty propagation from the seismic hazard to the structural damage. A mathematical formula is then developed for probabilistic estimation of the seismic damage and losses over a specified time period. The analysis procedure is developed such that the effect of the different configurations of the decision inputs can be promptly observed. The proposed procedure is demonstrated by performing a decision analysis for a hypothetical RC building structure for determination of the optimal level of seismic rehabilitation using steel bracings.

中文翻译：

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基于风险的结构抗震修复决策支持

这项研究提出了一种基于风险的建筑结构抗震决策支持框架，决策标准是在特定时期内将修复所需的费用和预期的地震损失之和降至最低。概率地震灾害模型（PSHM）和概率地震需求模型（PSDM）用于处理从地震灾害到结构破坏的不确定性传播。然后开发一个数学公式，以概率估计指定时间段内的地震破坏和损失。分析程序经过开发，可以迅速观察决策输入的不同配置的影响。