• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>IMAC Conference on Structural Dynamics >Design and Construction of a Very Lively Bridge
【24h】

Design and Construction of a Very Lively Bridge

机译：一种非常活泼的桥梁的设计与施工

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In recent years, an increasing number of light structures has been reported to exhibit substantial vertical vibrations when exposed to pedestrian-induced dynamic loading. It is believed that pedestrians interact with lively structures by altering their walking style and changing the dynamic properties of the vibrating system. As the existing vibration serviceability guidelines do not address these pedestrian-structure interaction effects, they cannot predict the structural dynamic response accurately. Fundamental understanding of the pedestrian-structure interaction is currently limited since most reported observations are of qualitative nature. To improve understanding and develop models of human interaction with lively structures, a purpose-built experimental facility that can be excited by human walking is required. This paper describes design and construction of a 19.9 m long, low-frequency and lightly damped experimental bridge for studying pedestrian-structure interaction. The challenge to design a relatively heavy and low-frequency footbridge in the limited space of the Structures Laboratory at the University of Warwick, UK, was met by adopting a traditional steel-concrete composite structural system. The experimental data collected on the "Warwick Bridge" during first six-months of structural life are presented to characterise both its static and dynamic behaviour. Dynamic testing of the bridge revealed that, with an achieved fundamental natural frequency of 2.4 Hz, the corresponding damping ratio of 0.5%, and an opportunity to tune the dynamic properties as required, the key design criteria were successfully met.
机译：近年来，光结构的越来越多的已报道当暴露于行人引起动态加载表现出实质性的垂直振动。据认为，行人通过改变他们的走路姿势和改变振动系统的动态特性与活泼结构交互。由于现有的振动适用性准则不解决这些行人 - 结构交互的影响，它们不能准确地预测结构的动态响应。行人 - 结构相互作用的基本认识目前有限，因为大多数报告的意见是定性的。为了增进了解，发展与活泼结构人机交互模式，需要的是可以通过人类行走激发的目的建造的实验设施。本文描述了用于研究行人 - 结构交互的19.9米设计和施工长，低频率和小阻尼实验桥。我们面临的挑战在结构实验室在英国华威大学的有限空间设计相对较重和低频天桥，是采用传统的钢 - 混凝土组合结构体系得到满足。在结构寿命的首六个月收集的“华威桥”的实验数据都表征它的两个静态和动态行为。桥的动态测试显示，与2.4赫兹的所获得的基本固有频率，0.5％的相应的阻尼比，并有机会调整的动态特性按要求，关键设计准则被成功满足。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号