ID | 119085 |
Title Alternative | ESTIMATION OF WIND SPEED FROM TRANSMISSION TOWER COLLAPSE BY TYPHOON FAXAI
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Author | |
Keywords | RANS
地形効果
骨組構造解析
令和元年台風15号
Terrain Effect
Frame Structural Analysis
Typhoon FAXAI
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Content Type |
Journal Article
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Description | 2019年9月9日,令和元年台風15号は,千葉県を中心に東日本に大きな被害をもたらした。そのうちの一つが2基の送電鉄塔の倒壊被害である。本論文では,この被害が発生した際の風速を推定するために,数値流体解析によって送電鉄塔の倒壊現場周辺の流れ場に対する地形の影響を検討した。さらに得られた流れ場に基づいて風荷重を求め,送電鉄塔の静的構造解析を行った。その結果,風向角146.25°において,地形の影響によって局所的に風速が増加し,風速40m/sで79号鉄塔が倒壊し始めるという結果を得た。
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Description Alternative | On September 9, 2019, Typhoon FAXAI left huge damage in eastern Japan, mainly in Chiba Prefecture. One of them was the collapse of two power transmission towers. In this paper, in order to estimate the wind speed when this damage occurs, the influence of the topography on the flow field around the collapse site of the transmission tower was investigated by numerical fluid analysis. Furthermore, the static structural analysis of the transmission tower was carried out by applying wind load based on the obtained flow field. As a result, at the wind direction angle of 146.25 degrees, local wind speed increased due to the topography, and the No. 79 tower began to collapse at a wind speed of about 40 m / s.
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Journal Title |
Wind Engineering Research
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ISSN | 24355429
24354384
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Publisher | 日本風工学会
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Volume | 26
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Start Page | 102
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End Page | 109
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Published Date | 2020
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EDB ID | |
DOI (Published Version) | |
URL ( Publisher's Version ) | |
FullText File | |
language |
jpn
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TextVersion |
Publisher
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departments |
Science and Technology
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