Collapse Limit State Fragilities of Wood-Framed Residences from Storm Surge and Waves during Hurricane Ike
Collapse Limit State Fragilities of Wood-Framed Residences from Storm Surge and Waves during Hurricane Ike
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飓风艾克期间风暴潮和海浪造成的木结构住宅的倒塌限制状态脆弱性
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
S. Rogers
中科院分区：
文献类型：
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作者：
Tori Tomiczek;A. Kennedy;S. Rogers
摘要通过对近2,000座木结构房屋的Posthurst Ike调查，结合高分辨率数值后报，研究了陆上波浪和涌浪引起的倒塌极限状态。对于这场风暴，干舷以上的波峰，波高，流速和施工日期被认为是最重要的因素，决定生存。回归分析在预测崩溃脆弱性方面显示出相当的技巧，并将证明对评估脆弱性是有用的。数据集中的风速范围相对较小，无法准确评估风对倒塌的影响。几个ASCE和FEMA部队的估计表明，在脆弱性建模方面的技能相对较低，这在很大程度上是因为他们的破碎波假设在大部分范围内都不准确。然而，在力建模中使用最佳估计波高大大提高了脆弱性估计的准确性。尽管这项研究取得了积极成果，但仍存在许多问题。事实证明，这是不可能的…
AbstractPosthurricane Ike surveys for almost 2,000 individual wood-framed houses were combined with high resolution numerical hindcasts to investigate the collapse limit state arising from overland waves and surge. For this storm, freeboard above wave crests, wave height, current velocity, and construction date were found to be the most important factors determining survival. Regressions show considerable skill in predicting collapse fragilities and will prove useful in assessing vulnerability. The relatively small range of wind speeds available in the data set did not allow accurate assessments of wind effects on collapse. Several ASCE and FEMA force estimates showed relatively low skill in modeling fragility, in large part because their breaking wave assumption was not accurate over much of the range. However, the use of best-estimate wave heights in force modeling greatly improved accuracy of fragility estimates. Despite the positive results of this study, numerous questions remain. It proved impossibl...