Parallels between wind and crowd loading of bridges
Parallels between wind and crowd loading of bridges
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DOI：
10.1098/rsta.2012.0430
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发表时间：
2013-06-28
期刊：
影响因子：
5
通讯作者：
Prendergast, John
中科院分区：
文献类型：
--
作者：
McRobie, Allan;Morgenthal, Guido;Prendergast, John
柔性桥梁在风的作用下和在人群引起的力的作用下的动态响应之间的相似性允许每个场通知另一个场。传统上，风致行为被分为颤振、驰振、涡激振动和抖振等类别。然而，计算的进步，如涡粒子方法，导致了一个更一般的图片，效果可能同时发生和相互作用，这样简单的语义分界打破。类似地，单个行人的建模也促进了对人-结构相互作用的理解，特别是对于人群荷载下的大幅横向振荡。本文以风工程中颤振和涡激振动的相互作用为指导，提出了一个框架，该框架允许各种人-结构相互作用效应共存和相互作用，从而提供了一种可能的综合先前不同的实验和理论结果的方法。
Parallels between the dynamic response of flexible bridges under the action of wind and under the forces induced by crowds allow each field to inform the other. Wind-induced behaviour has been traditionally classified into categories such as flutter, galloping, vortex-induced vibration and buffeting. However, computational advances such as the vortex particle method have led to a more general picture where effects may occur simultaneously and interact, such that the simple semantic demarcations break down. Similarly, the modelling of individual pedestrians has progressed the understanding of human-structure interaction, particularly for large-amplitude lateral oscillations under crowd loading. In this paper, guided by the interaction of flutter and vortex-induced vibration in wind engineering, a framework is presented, which allows various human-structure interaction effects to coexist and interact, thereby providing a possible synthesis of previously disparate experimental and theoretical results.