Wind Induced Forces on Trees
Wind Induced Forces on Trees
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风对树木产生的力
DOI：
10.1115/1.3240848
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发表时间：
1982
影响因子：
2
通讯作者：
D. O'Hagan
中科院分区：
文献类型：
--
作者：
R. C. Johnson;G. Ramey;D. O'Hagan
1979年9月12日，飓风弗雷德里克袭击了美国中部墨西哥湾沿岸，造成23亿美元的损失，使弗雷德里克成为美国历史上损失最大的飓风。有许多类型的破坏；然而，最普遍的是与森林有关的。美国国家气象局（NWS）和墨西哥湾沿岸的其他气象站完成了飓风弗雷德里克风速的准确记录。飓风过后的破坏调查彻底记录了这些地区的树木和其他损害。本研究的目的是探讨树木损害与已知记录风速的关系，并根据观测到的未来风暴损害发展预测最大风速的方法。这项研究是一个更大的研究项目的一部分，该项目旨在确定最大风速、风速等高线以及与龙卷风风暴有关的结构的风荷载。包括现场损坏文件和实验室风洞测试。预计本文所包含的结果将为工程师提供一个基础，使他们能够更全面地了解没有气象数据存在的气旋风暴中的风场，例如龙卷风。
When Hurricane Frederic struck the central US Gulf Coast on September 12, 1979, $2.3 billion in damage resulted making Frederic the most costly hurricane in US history. There were many types of damage; however, the most widespread was that associated with forests. Accurate recording of Hurricane Frederic's windspeeds was accomplished at National Weather Service (NWS) and other weather stations along the Gulf Coast [1], A post-hurricane damage survey thoroughly documented tree and other damages in these same regions. The purpose of this study is to investigate the correlation of tree damage with the known recorded windspeeds and to develop methods of predicting maximum windspeeds based on observed damage in future windstorms. This study is part of a larger research project to determine maximum windspeeds, windspeed contours, and wind loadings on structures associated with tornadic windstorms. Included are both field damage documentation and laboratory wind tunnel testing. It is expected that the results contained herein will give engineers a basis for a more complete understanding of windfields in cyclonic storms where no meterological data exist as is often the case for tornadoes.