Advanced Technologies for Mitigation of Human-Induced Vibration

减轻人为振动的先进技术

• 批准号: EP/J004081/2
• 负责人: Paul Reynolds
• 金额: $ 97.82万
• 依托单位: UNIVERSITY OF EXETER
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2013
• 资助国家: 英国
• 起止时间: 2013 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FJ004081%2F2
• 关键词: Advanced; Technologies; Mitigation; Human; Induced

There is an inexorable trend for civil engineering structures to become more slender and lightweight, as engineers strive to design more efficient structures with reduced economic cost, reduced carbon footprint and increased flexibility of usage. Unfortunately, due to their reduced mass and stiffness these structures are inherently lively and there is a desperate need for advanced technologies that are capable of ensuring satisfactory vibration performance when people walk, run and jump on them. There are two key issues to address:(1) Technologies are required to deal with existing vibration problems, which are increasingly and widely observed in structures such as floors, footbridges, sports stadia and staircases. Currently available technologies are insufficient to deal with the majority of these problems, which means that extensive and low-tech structural modification schemes have to be employed that are both expensive and highly disruptive.(2) If the ambitions of structural engineers for ever more slender and efficient structures are to be realised, it will be necessary to 'design in' advanced methods of vibration control when developing new structures. This is because many contemporary structures are already being designed at their limits of vibration acceptability. Unfortunately, the new technologies required for this transformative design approach are not yet available.In the last five years, the applicant and his team have carried out exciting research into active control of vibration in floor structures, in which large reductions in vibration have been achieved that are not possible using other floor control technologies. They have also demonstrated that significant material savings may be made using this technology, which has the potential to significantly reduce the carbon footprint of new buildings. This is the main vision for this fellowship and the future, where advanced and intelligent vibration control strategies will become commonplace in structures subject to human dynamic loading.However, a solution that works for floor vibrations from a single person walking is not necessarily going to work for a sports stadium with many thousands of people jumping during a rock concert. Hence, what is required is a required is a complete 'suite' of control technologies, from which the most appropriate solution may be chosen and implemented for any particular vibration problem. In these days of active noise cancelling headphones and semi-active vehicle suspension systems, it is time for these advanced technologies to find their place in civil structural engineering, to solve the unique problems of human-induced vibration.Hence, in this research a comprehensive framework of technologies will be developed, so that the most appropriate technologies may be selected for a particular application. This will be the first time in the world that such a holistic approach has been taken to mitigation of human-induced vibrations. Fundamental research into a range of these technologies, including active, semi-active and hybrid vibration control techniques will be carried out to prove their viability in the civil engineering sector through analytical modelling, laboratory testing and in-the-field implementation. Finally, extensive industrial liaison and public outreach activities are planned to ensure the take-up of these technologies, which is the key way in which this research will benefit UK plc.

土木工程结构变得更加细长和轻量级存在着一种不可思议的趋势，工程师努力设计出更有效的结构，其经济成本降低，碳足迹降低和使用的灵活性提高。不幸的是，由于它们的质量和僵硬减少，这些结构本质上是活泼的，并且迫切需要先进的技术，这些技术能够在人们走路，跑步和跳跃时能够确保令人满意的振动性能。有两个关键问题需要解决：（1）处理现有的振动问题需要技术，这些问题越来越广泛地观察到地板，人行道，运动体育场和楼梯等结构中。目前可用的技术不足以处理大多数这些问题，这意味着必须采用广泛的和低技术的结构修饰方案，既昂贵又高度破坏性。（2）如果结构工程师的野心越来越细长，更有效的结构可以实现，那么在开发出“高级纤维结构”中的设计将是必要的。这是因为许多当代结构已经在其振动可接受性的范围内设计。不幸的是，这种变革性设计方法所需的新技术尚不可用。在过去的五年中，申请人及其团队对地板结构中对振动的积极控制进行了令人兴奋的研究，在这种研究中，使用其他地板控制技术无法实现振动的大量振动。他们还证明，可以使用该技术可以节省大量资料，这有可能大大减少新建筑物的碳足迹。这是该团契和未来的主要愿景，在这种情况下，先进和智能的振动控制策略将在受人体动态负载的结构中变得司空见惯。因此，所需的是，需要一个完整的“控制技术套件”，可以从中为任何特定的振动问题选择最合适的解决方案。在当今的积极降噪耳机和半活性车辆悬架系统中，现在是时候让这些高级技术在民用结构工程中找到自己的位置，以解决人类引起的振动的独特问题。因此，在这项研究中，将开发全面的技术框架，以便为特定应用程序选择最合适的技术。这将是世界上第一次采取这种整体方法来缓解人类引起的振动。将对这些技术进行的一系列技术研究，包括主动，半活动和混合振动控制技术，以通过分析建模，实验室测试和现场实施来证明它们在土木工程领域的生存能力。最后，计划开展广泛的工业联络和公共宣传活动，以确保采用这些技术，这是这项研究使英国俱乐部受益的关键方式。

项目成果

Evaluation of eddy current damper for vibration control of a frame structure

• DOI: 10.1088/2399-6528/ab1deb
• 发表时间: 2019-05
• 期刊: Journal of Physics Communications
• 影响因子: 1.2
• 作者: W. Ao;P. Reynolds

Shock & Vibration, Aircraft/Aerospace, and Energy Harvesting, Volume 9 - Proceedings of the 33rd IMAC, A Conference and Exposition on Structural Dynamics, 2015

震惊

• DOI: 10.1007/978-3-319-15233-2_21
• 发表时间: 2015
• 作者: Ao W

Analytical and Experimental Study of Eddy Current Damper for Vibration Suppression in a Footbridge Structure

• DOI: 10.1007/978-3-319-54777-0_17
• 发表时间: 2017-06
• 作者: W. Ao;P. Reynolds

Design and Construction of a Reconfigurable Pedestrian Structure

可重构步行结构的设计与施工

• DOI: 10.1007/s40799-016-0144-3
• 发表时间: 2016
• 期刊: Experimental Techniques
• 影响因子: 1.6
• 作者: Hudson E

A novel video-vibration monitoring system for walking pattern identification on floors

• DOI: 10.1016/j.advengsoft.2019.102710
• 发表时间: 2020
• 期刊: Adv. Eng. Softw.
• 作者: Osama Abdeljaber;M. Hussein;Onur Avcı;Bradley C. Davis;P. Reynolds