Dynamic Performance of Large Civil Engineering Structures: An Integrated Approach to Management, Design and Assessment

大型土木工程结构的动态性能：管理、设计和评估的综合方法

• 批准号: EP/G061130/1
• 负责人: Aleksandar Pavic
• 金额: $ 96.65万
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2009
• 资助国家: 英国
• 起止时间: 2009 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FG061130%2F1
• 关键词: Dynamic; Performance; Large; Civil; Engineering

Despite decades of mainly laboratory-based research, dynamic performance, including vibration serviceability, of as-built civil engineering structures in open-space environments is still one of the least understood areas of civil structural engineering. However, this area is rapidly gaining in importance due to strong trends towards increased slenderness and height as well as reduced mass, stiffness and damping of high-rise buildings, long-span floors, road- and foot-bridges, as well as assembly structures such as grandstands occupied and dynamically excited by thousands of spectators. To compound the problem, in the last 10 years this has been coupled with the contradicting requirements to reduce and control structural vibrations when humans and/or sensitive processes are vibration receivers. This is mainly due to increased human expectations from high-quality infrastructure and the development of advanced technological processes, such as microelectronics manufacturing or particle physics research, requiring sub-micron positional precision. Another aspect of dynamic performance of as-built civil engineering structures is their long-term monitoring. This is rapidly gaining importance in the developing and sometimes contentious field of structural health monitoring (SHM), which is a misnomer and should more appropriately be understood, based on recent developments in the field, as structural performance monitoring (SPM).Not surprisingly, with vibration serviceability, two-thirds of all relevant papers dealing with this problem were published only in the last 8 years. The value of the portfolio of affected, mainly new-built or refurbished, structures just in the UK is more than 100bn annually. Wind, earthquake, over- and underground traffic as well as human-induced dynamic excitation (e.g. due to walking or jumping) are the key operational dynamic actions of which effects on as-built real-life full-scale civil engineering structures and their prediction (for vibration serviceability), utilisation (for SPM) and mitigation (for vibration control) are the subject of this Platform Grant proposal.The key reason for the current unsatisfactory worldwide state-of-the-art in this area is the imbalance between the general research underfunding and rapidly increasing demands for more efficient, lighter - therefore livelier - structures. Under strong commercial pressures the construction of these structures currently takes place all over the world and it is worrying that this is not supported by sound understanding of their operational dynamic behaviour. Starting from first principles, more integration of existing theories and available (but in this context not utilised) technologies, is required to link experimental and analytical approaches to dynamic performance. Linking analysis with reality is the only way to understand better dynamic performance and improve design guidelines. This link is often missing nowadays.The key aim of the proposal therefore is to provide flexible funding for the proposers over the next five years to realise their vision for an integrated approach to management of design and assessment, and management of dynamic performance of large civil engineering structures. The stated aim, or better say vision, is very ambitious but is also broad, risky and difficult to investigate under normal EPSRC project-based funding. In this context, the Platform Grant is the ideal funding mechanism for achieving this aim. The current portfolio of VES activities is fully compatible with this Platform Grant proposal, offering rich and exciting expertise as well as hardware and software support for the work.

尽管几十年来主要以实验室为基础的研究，动态性能，包括振动适用性，在开放空间环境中建成的土木工程结构仍然是土木结构工程的最不了解的领域之一。然而，由于高层建筑、大跨度楼层、道路和人行桥以及装配式结构（如看台）的细长度和高度增加以及质量、刚度和阻尼降低的强烈趋势，这一领域的重要性正在迅速增加。使问题复杂化的是，在过去的10年中，当人类和/或敏感过程是振动接收器时，这已经与减少和控制结构振动的矛盾要求相结合。这主要是由于人们对高质量基础设施的期望增加，以及先进技术工艺的发展，如微电子制造或粒子物理研究，需要亚微米的位置精度。竣工土木工程结构动态性能的另一个方面是其长期监测。这在结构健康监测（SHM）这一发展中的、有时是有争议的领域中迅速变得重要起来。根据该领域的最新发展，SHM是一个误称，应该更恰当地理解为结构性能监测（SPM）。毫不奇怪，关于振动适用性的所有相关论文中，有三分之二是在过去8年中发表的。仅在英国，受影响的建筑投资组合（主要是新建或翻新的建筑）的价值每年就超过1000亿英镑。风、地震、地上地下交通以及人为动力激励（例如，由于行走或跳跃）是关键的操作动态行为，其对竣工的真实生活全尺寸土木工程结构的影响及其预测（振动适用性），利用（SPM）和缓解（用于振动控制）是本平台赠款提案的主题。目前世界范围内不令人满意的状态的主要原因是，这一领域的艺术是一般研究资金不足与对更有效、更轻--因此更有活力--结构的需求迅速增长之间的不平衡。在强大的商业压力下，这些结构的建设目前在世界各地进行，令人担忧的是，这并没有得到对其运行动态行为的正确理解的支持。从第一原理开始，需要更多地整合现有理论和可用（但在此背景下未使用）技术，以将实验和分析方法与动态性能联系起来。将分析与实际情况联系起来是了解更好的动态性能和改进设计准则的唯一途径。这项建议的主要目的，是在未来五年为建议者提供灵活的拨款，以子索他们的愿景，采用综合方法管理大型土木工程结构的设计和评估，以及动态性能管理。声明的目标，或者更好地说是愿景，是非常雄心勃勃的，但也是广泛的，有风险的，很难在EPSRC正常的项目为基础的资金调查。在这方面，平台赠款是实现这一目标的理想筹资机制。目前VES活动的组合与该平台赠款提案完全兼容，为工作提供丰富和令人兴奋的专业知识以及硬件和软件支持。

项目成果

On-off nonlinear active control of floor vibrations

• DOI: 10.1016/j.ymssp.2010.02.011
• 发表时间: 2010-08
• 期刊: Mechanical Systems and Signal Processing
• 影响因子: 8.4
• 作者: I. M. Díaz;P. Reynolds

Duality between time and frequency domains for vibration serviceability analysis of floor structures

楼板结构振动适用性分析的时域和频域对偶

• DOI: 10.1016/j.proeng.2017.09.517
• 发表时间: 2017
• 期刊: Procedia Engineering
• 作者: Al-Anbaki A

Vertical Crowd Dynamic Action on Footbridges: Review of Design Guidelines and their Application

人行天桥上的垂直人群动力作用：设计指南及其应用的回顾

• 作者: Aleksandar Pavic (Author)

Nonstructural Partitions and Floor Vibration Serviceability

• DOI: 10.1061/(asce)ae.1943-5568.0000171
• 发表时间: 2016-03-01
• 期刊: JOURNAL OF ARCHITECTURAL ENGINEERING
• 影响因子: 2
• 作者: Devin, A.;Fanning, P. J.;Pavic, A.
• 通讯作者: Pavic, A.

Active Vibration Control of a Multi-Panel Floor Area

多面板地板区域的主动振动控制

• 作者: Emma Hudson (Author)