Dynamics of Civil Structures, Volume 2 - Proceedings of the 37th IMAC, A Conference and Exposition on Structural Dynamics 2019
Dynamics of Civil Structures, Volume 2 - Proceedings of the 37th IMAC, A Conference and Exposition on Structural Dynamics 2019
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土木结构动力学，第 2 卷 - 第 37 届 IMAC 会议论文集，2019 年结构动力学会议和博览会
DOI：
10.1007/978-3-030-12115-0_16
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Russell J
中科院分区：
文献类型：
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作者：
Russell J
本文概述了设计方法和挑战，在建设一个非常生动的20米的纤维增强聚合物（FRP）组件的实验桥。FRP复合材料桥梁是人行桥建设的一个有吸引力的选择，因为它们的轻质特性提供了工程优势。然而，当与它们的低刚度相结合时，这样的结构可以导致对人类引起的负载条件的活跃。我们定制的人行天桥结构设计考虑了人与结构的相互作用问题，以及发展对FRP结构动态响应的理解。预测的设计行为和实测响应之间的比较。测得的垂直弯曲模式为2.53和8.48 Hz，扭转模式为3.36 Hz，与预测的设计行为一致。在桥上的行走测试表明，它对典型的人类起搏频率和动作有强烈的反应。
This paper presents an overview into the design approach and challenges in constructing a very lively 20 m experimental bridge of Fiber-Reinforced Polymer (FRP) components. FRP composite bridges are an attractive option for footbridge construction since their lightweight nature offers engineering advantages. However, when combined with their low stiffness, such structures can result in being lively to human-induced loading conditions. Our bespoke footbridge structure was designed to consider human-structure interaction problems, as well as to develop the understanding of the dynamic response of FRP structures. Comparisons are made between the predicted design behavior and measured responses. Measured vertical bending modes are 2.53 and 8.48 Hz, with a torsional mode at 3.36 Hz, agreeing with predicted design behavior. Walking tests on the bridge demonstrate that it responses strongly to typical human pacing frequencies and actions.