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风荷载下人行桥行人舒适性的分析 被引量:1

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摘要 文章采用有限元瞬态动力响应分析方法,对某人行桥在脉动风荷载作用下、以不同人群密度循环过桥时的行人舒适性进行了详细的对比研究。分析时考虑了在循环过桥荷载模式下、不同风速及不同人群密度对行人舒适性的影响。结果表明:在所取循环过桥荷载模式下、该桥的行人舒适性,在较低风速下,主要由循环过桥的人群密度控制;而当风速较高时,则主要由脉动风速的大小控制。同时,该桥钢主梁段的加速度响应要远大于混凝土梁段的响应,而混凝土梁段的横向振动对人群荷载的响应更为敏感。
出处 《四川建筑》 2020年第5期187-190,共4页 Sichuan Architecture
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