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System Identification & investigation of Human-Structure-Interaction (HSI) phenomena in differing biomechanical loading situations

系统识别

基本信息

批准号：
1963538
负责人：
金额：
--
依托单位：
University of Bristol
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1963538
关键词：
System Identification investigation Human Structure

项目摘要

Human-Structure Interactions (HSI) is a severely misunderstood research area in engineering with a serious lack of full-scale experimental data from existing structures. It is of serious importance in the Civil and Structural disciplines due to the surprising complex behaviours observed in previous recorded incidents. For example, the sudden onset of lateral vibrations, wobbling, of the London Millennium Footbridge on its opening day and weekend. This has postulated the question of whether structures within and throughout cities are being constructed in the best manner. As advancements are constantly being made throughout the Science, Technology, Engineering & Mathematical (STEM) communities the need to understand unknown phenomena drives us to create a better world to live in. Civilian safety is of the upmost importance in the infrastructure of a city. Hence, the serviceability and maintenance of structures is crucial in ensuring it. This research area is very unique in that it draws from a large spectrum of engineering disciplines, integrating a variety of concepts and principles, to get a complete understanding of the phenomena observed in HSI. The fields of biomechanics, nonlinear dynamics and crowd dynamics are of crucial importance. Can we effectively model human responses through biomechanical principals to identify and quantify the mechanisms observed between structures and people? How is it possible that the dynamic feedback in HSI produces complex and unexpected resonances? This study aims to investigate the HSI phenomena in differing human loading situations. Specifically, in bridge and grandstand structures during human gait, jumping and bobbing. The framework of this study will comprise both theoretical and experimental work. Analysis of full-scale data from a crowd loading event of a bridge will be completed. System identification techniques will be used to effectively process and classify the data. It will be used to better understand and categorise the underlying mechanisms involved. Also, to validate and fine tune current biomechanical models. The theoretical scope will look at the application of nonlinear dynamics in the examination of these models. This will be supported by an in-depth parametric study using computational software, MATLAB, to simulate responses. The intention is to simplify them in a definitive way to hold the main characteristics and fundamentals whilst still providing accurate results. The objective is to develop this into a global system structure which can be used as a general case for design purposes.The outcome of this research will create accurately refined dynamic models aiding in the design, construction and maintenance of civil and mechanical structures. It could lead to the advancements in system compensators such as inerters; for example, J Dampers in Formula One.

人-结构相互作用（HSI）是一个严重被误解的工程研究领域，严重缺乏来自现有结构的全尺寸实验数据。由于在以前记录的事件中观察到的令人惊讶的复杂行为，它在土木和结构学科中非常重要。例如，伦敦千禧人行桥在开幕当天和周末突然发生横向振动和摇晃。这就提出了一个问题，即城市内部和整个城市的建筑是否以最佳方式建造。随着整个科学、技术、工程和数学（STEM）社区不断取得进步，了解未知现象的需求驱使我们创造一个更美好的生活世界。平民安全是城市基础设施的重中之重。因此，结构的适用性和维护是确保这一点的关键。这一研究领域非常独特，因为它从大量的工程学科中汲取，整合了各种概念和原理，以全面了解在HSI中观察到的现象。生物力学、非线性动力学和群体动力学领域是至关重要的。我们能否通过生物力学原理有效地模拟人类的反应，以识别和量化结构和人之间观察到的机制？HSI中的动态反馈如何可能产生复杂和意外的共振？本研究的目的是调查在不同的人类负载情况下的HSI现象。具体来说，在桥和看台结构在人类步态，跳跃和摆动。这项研究的框架将包括理论和实验工作。将完成对桥梁人群荷载事件的全尺寸数据的分析。系统识别技术将用于有效地处理和分类数据。它将用于更好地理解和分类所涉及的潜在机制。此外，验证和微调当前的生物力学模型。理论范围将着眼于非线性动力学在这些模型的检查中的应用。这将得到使用计算软件MATLAB进行的深入参数研究的支持，以模拟响应。其目的是以明确的方式简化它们，以保持主要特征和基本原理，同时仍然提供准确的结果。其目的是将其发展成一个全球性的系统结构，可以作为一个一般的情况下，用于设计purposes.The本研究的成果将创建精确的细化动态模型，帮助设计，施工和维护的土木和机械结构。它可能会导致系统补偿器的进步，例如惯性器;例如，一级方程式中的J阻尼器。