Abstract
In recent years, some risk analysis methods were proposed so that the quantitative evaluation of risk has been available. 0n the other hand, the treatment of the quantified risk has not been considered sufficiently, though it is important for carrying out the effective risk management. In this paper, seismic portfolio risk analysis method consistent with the existing seismic hazard analysis was proposed. Using this method, portfolio of 10 buildings was analyzed from the viewpoint of risk management, followed by the following findings. (1) Seismic risk can be reduced by diversifying assets. (2) In case of diversifying assets in multiple sites, the examination of seismic hazard in each site is necessary. (3) Effectiveness of strengthening work can be measured using risk curve. (4) Contribution of risk of each asset to the portfolio risk is identified so that the rational strengthening work can be done.
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