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风雨共同作用下斜拉桥横桥向反应特性研究

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Indexed by:期刊论文

Date of Publication:2017-10-15

Journal:自然灾害学报

Included Journals:Scopus

Volume:26

Issue:05

Page Number:1-9

ISSN No.:1004-4574

Key Words:斜拉桥;风荷载;雨荷载;横桥向;时程分析

Abstract:应用谐波叠加法模拟生成风荷载时程曲线,根据提出的雨荷载计算方法,通过对雨滴与桥面之间夹角问题的研究,得到不同风速、不同雨强下桥面雨荷载时程曲线。应用有限元软件建立斜拉桥三维模型,对全桥施加横桥向单独风荷载作用及风雨共同作用。结果表明,主梁加速度和位移在主跨跨中达到最大值,主梁和索塔横桥向剪力在梁塔连接处达到最大值,斜拉索拉力在边跨最长拉索处达到最大值。考虑雨荷载的影响后,主梁和索塔加速度值、位移值和剪力值均有一定的提高,但斜拉索拉力值变化不明显。

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