赤石特大橋山區(qū)地形橋位風(fēng)特性現(xiàn)場(chǎng)實(shí)測(cè)
發(fā)布時(shí)間:2019-06-03 15:33
【摘要】:針對(duì)湖南郴州赤石大橋橋位的風(fēng)特性進(jìn)行了現(xiàn)場(chǎng)實(shí)測(cè),統(tǒng)計(jì)了觀測(cè)器內(nèi)大風(fēng)天數(shù)與風(fēng)向情況,對(duì)大風(fēng)時(shí)段沿橋軸向各測(cè)點(diǎn)的風(fēng)速、風(fēng)向、風(fēng)攻角及紊流度等風(fēng)特性參數(shù)進(jìn)行了分析。結(jié)果表明:觀測(cè)期間橋位處存在瞬時(shí)突變風(fēng)現(xiàn)象;受地形影響,風(fēng)向以南北向?yàn)橹?且大風(fēng)時(shí)段風(fēng)向?yàn)槟巷L(fēng),風(fēng)攻角變化較小;沿橋軸向個(gè)測(cè)點(diǎn)的平均風(fēng)速、風(fēng)向、風(fēng)攻角變化基本一致。
[Abstract]:According to the wind characteristics of the bridge position of Chenzhou Chishi Bridge in Hunan Province, the wind speed and wind direction in the observer are counted, and the wind speed and wind direction along the axial direction of the bridge during the strong wind period are calculated. The wind characteristic parameters such as wind attack angle and turbulence are analyzed. The results show that there is an instantaneous abrupt wind phenomenon at the bridge position during the observation period, and under the influence of topography, the wind direction is mainly north-south direction, and the wind direction is south wind during the strong wind period, and the wind attack angle changes little. The average wind speed, wind direction and wind attack angle along the axial direction of the bridge are basically the same.
【作者單位】: 湖南省汝郴高速公路建設(shè)開(kāi)發(fā)有限公司;湖南大學(xué)土木工程學(xué)院;
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(51478180)
【分類號(hào)】:U442.59
[Abstract]:According to the wind characteristics of the bridge position of Chenzhou Chishi Bridge in Hunan Province, the wind speed and wind direction in the observer are counted, and the wind speed and wind direction along the axial direction of the bridge during the strong wind period are calculated. The wind characteristic parameters such as wind attack angle and turbulence are analyzed. The results show that there is an instantaneous abrupt wind phenomenon at the bridge position during the observation period, and under the influence of topography, the wind direction is mainly north-south direction, and the wind direction is south wind during the strong wind period, and the wind attack angle changes little. The average wind speed, wind direction and wind attack angle along the axial direction of the bridge are basically the same.
【作者單位】: 湖南省汝郴高速公路建設(shè)開(kāi)發(fā)有限公司;湖南大學(xué)土木工程學(xué)院;
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(51478180)
【分類號(hào)】:U442.59
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