Abstract In recent years, the United States and other countries have experienced catastrophic consequences of severe natural hazards, e.g. the 2005 Hurricane Katrina, the 2011 Christchurch Earthquake, and the 2011 Great East Japan Earthquake and Tsunami. These consequences motivate the question: How should a community’s damaged building portfolio be reconstructed efficiently to enhance its performance under future hazard events and meet the resilience goals of the community? The relatively recent notion of Building Back Better requires a quantitative methodology that can address each phase of building portfolio recovery following a severe hazard event and provide decision support to best enhance the performance of the portfolio under future hazards. This study extends notions of life-cycle analysis from individual buildings to building portfolios to support post-hazard reconstruction decisions at the community level. The building portfolio expected life-cycle cost and cumulative prospect value are adopted as decision metrics which reflect varying degrees of risk aversion on the part of community decision-makers. The applicability of these building portfolio life-cycle analyses and some key aspects in their implementation are explored using a moderate-sized community that is susceptible to extreme earthquake hazards.

中文翻译：

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生命周期分析 (LCA) 通过更好地重建来恢复社区建设投资组合 I：建立投资组合 LCA

摘要 近年来，美国等国家经历了2005年卡特里娜飓风、2011年基督城地震、2011年东日本大地震和海啸等严重自然灾害造成的灾难性后果。这些后果引发了一个问题：如何有效地重建社区受损的建筑组合，以提高其在未来灾害事件下的表现并满足社区的复原力目标？重建得更好的相对较新的概念需要一种定量方法，该方法可以解决严重灾害事件后建筑组合恢复的每个阶段，并提供决策支持以最好地提高组合在未来灾害下的表现。本研究将生命周期分析的概念从单个建筑扩展到建筑组合，以支持社区层面的灾后重建决策。建筑组合的预期生命周期成本和累积前景价值被用作决策指标，反映了社区决策者不同程度的风险厌恶程度。这些建筑组合生命周期分析的适用性及其实施中的一些关键方面是通过一个易受极端地震灾害影响的中等规模社区进行的。