大跨徑懸索橋施工階段顫振穩(wěn)定性影響因素研究
發(fā)布時間:2018-08-10 22:38
【摘要】:基于全物理坐標(biāo)法的ANSYS有限元模型,對中渡橋施工階段顫振穩(wěn)定性進(jìn)行分析,分別研究對稱與不對稱施工、不同初始風(fēng)攻角、結(jié)構(gòu)阻尼等因素對施工階段顫振穩(wěn)定性的影響。研究結(jié)果表明:不對稱施工順序更有利于施工階段的顫振穩(wěn)定性;初始風(fēng)攻角為-3°時有利于顫振穩(wěn)定性,而+3°時最為不利;結(jié)構(gòu)阻尼對顫振穩(wěn)定性影響較大,特別是早期施工階段尤為顯著,可明顯改善大跨度懸索橋施工階段顫振穩(wěn)定性。分析方法可為橋梁設(shè)計和研究人員提供參考。
[Abstract]:Based on the ANSYS finite element model of the whole physical coordinate method, the flutter stability of Zhongdu Bridge in construction stage is analyzed. The effects of symmetry and asymmetry construction, different initial wind attack angle and structure damping on flutter stability in construction stage are studied respectively. The results show that the asymmetrical construction sequence is more favorable to the flutter stability in the construction stage, the initial wind attack angle is 3 擄, the flutter stability is the most unfavorable at 3 擄, and the structural damping has a great influence on the flutter stability. Especially in the early stage of construction, the flutter stability of long span suspension bridge can be improved obviously. The analysis method can provide reference for bridge design and researchers.
【作者單位】: 同濟(jì)大學(xué)土木工程防災(zāi)國家重點(diǎn)實(shí)驗(yàn)室;長沙理工大學(xué)橋梁工程安全控制技術(shù)與裝備湖南省工程技術(shù)研究中心;
【基金】:同濟(jì)大學(xué)土木工程防災(zāi)國家重點(diǎn)實(shí)驗(yàn)室開發(fā)基金資助項(xiàng)目(KLWRTBMC) 國家自然科學(xué)基金資助項(xiàng)目(51278069,51208067) 湖南省教育廳優(yōu)秀青年項(xiàng)目資助(12B009) 鐵四院科研項(xiàng)目資助
【分類號】:U441.3
[Abstract]:Based on the ANSYS finite element model of the whole physical coordinate method, the flutter stability of Zhongdu Bridge in construction stage is analyzed. The effects of symmetry and asymmetry construction, different initial wind attack angle and structure damping on flutter stability in construction stage are studied respectively. The results show that the asymmetrical construction sequence is more favorable to the flutter stability in the construction stage, the initial wind attack angle is 3 擄, the flutter stability is the most unfavorable at 3 擄, and the structural damping has a great influence on the flutter stability. Especially in the early stage of construction, the flutter stability of long span suspension bridge can be improved obviously. The analysis method can provide reference for bridge design and researchers.
【作者單位】: 同濟(jì)大學(xué)土木工程防災(zāi)國家重點(diǎn)實(shí)驗(yàn)室;長沙理工大學(xué)橋梁工程安全控制技術(shù)與裝備湖南省工程技術(shù)研究中心;
【基金】:同濟(jì)大學(xué)土木工程防災(zāi)國家重點(diǎn)實(shí)驗(yàn)室開發(fā)基金資助項(xiàng)目(KLWRTBMC) 國家自然科學(xué)基金資助項(xiàng)目(51278069,51208067) 湖南省教育廳優(yōu)秀青年項(xiàng)目資助(12B009) 鐵四院科研項(xiàng)目資助
【分類號】:U441.3
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【共引文獻(xiàn)】
相關(guān)期刊論文 前10條
1 李冰;黃麗華;雷剛;;大跨度懸索管道橋的ANSYS有限元分析綜述[J];防災(zāi)減災(zāi)工程學(xué)報;2010年S1期
2 李承[,
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