ABSTRACT A fragility function shows the building damage likelihood based on a demand parameter such as the tsunami flow depth. While empirical fragility functions have been developed by using postdisaster damage survey data, regions with no recent tsunami damage cannot develop these estimations. Alternatively, analytical fragility functions could be developed to fill this gap. Along the Colombian Pacific coast, several tsunami events have occurred; however, the aftermath resulting from the structure physical damage was not recorded. Fortunately, other regions of the have collected tsunami damage information, which has been analyzed and represented in terms of empirical fragility functions. This paper provides a comparative study of empirical and analytical tsunami fragility functions. It is focused on the analytical fragility functions developed for typical structures in Tumaco, Colombia and on empirical fragility curves taken from damage survey data of recent tsunami events. The differences in the assessments of the damage produced by the two methods in the case of a two-story reinforced concrete building in Tumaco is discussed herein. As a result of the comparison, it was shown that the structures in Tumaco have higher collapse probabilities at lower flow depths than structures in other places along the Pacific and Indian Oceans.

中文翻译：

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用于评估哥伦比亚图马科海啸建筑物损坏的经验和分析脆弱性函数的比较研究

摘要 脆弱性函数显示了基于需求参数（例如海啸流深度）的建筑物损坏可能性。虽然已经通过使用灾后破坏调查数据开发了经验脆弱性函数，但近期没有海啸破坏的地区无法进行这些估计。或者，可以开发分析脆弱性函数来填补这一空白。在哥伦比亚太平洋沿岸，发生了几次海啸事件；然而，结构物理损坏造成的后果没有记录。幸运的是，其他地区已经收集了海啸破坏信息，这些信息已经根据经验脆弱性函数进行了分析和表示。本文对经验性和分析性海啸脆弱性函数进行了比较研究。它侧重于为哥伦比亚图马科的典型结构开发的分析脆性函数以及从最近海啸事件的损害调查数据中获取的经验脆性曲线。本文讨论了在 Tumaco 一座两层钢筋混凝土建筑的情况下，两种方法造成的损坏评估的差异。比较结果表明，与沿太平洋和印度洋其他地方的结构相比，图马科的结构在较低的流动深度下具有更高的倒塌概率。