权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Cross comparison feasibility monitoring studies in 'test-to-destruction' trial on concrete footbridge

混凝土人行天桥“试验至破坏”试验的交叉比较可行性监测研究

基本信息

批准号：
EP/F041896/1
负责人：
Kenneth Grattan
金额：
$ 11.81万
依托单位：
City, University of London
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2008
资助国家：
英国
起止时间：
2008 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FF041896%2F1
关键词：
Cross comparison feasibility monitoring studies

项目摘要

Much of our current infrastructure, built of modern materials such as concrete, has required extensive repair after being in service for even a relatively short period of its design life. Currently ~600M pa is spent annually on the repair and maintenance of concrete infrastructure the UK alone, a figure that is multiplied many times across the developed nations. Serviceability and whole life performance is critical to effective use and the long-term monitoring of such structures is invaluable to ensure full structural capability and to minimize risk to the public and give value for money. For example, the advancement of lightweight, durable materials is seen as essential to future sustainable development, using highly durable lightweight, low energy concrete which can be used in a novel flexible concrete arch and other pre-cast products, incorporating within it advanced monitoring systems. However, in order to understand more fully the needs and challenges of creating better structures for the future using such materials (and allowing for better assessment of existing structures during their service lifetime) effective monitoring systems that can be installed and used to give reliable and informative data, having the confidence of industry need to be developed and used widely. Thus this project has been designed as a short, 12-month truly interdisciplinary study, to cross compare the issues surrounding the installation, use, data capture and evaluation of performance of several complementary techniques for structural monitoring. Uniquely the application and time scale is set by an opportunistic set of circumstances which allows for a 'test-to-destruction' of a footbridge on the National Physical Laboratory (NPL) site at Teddington, as part of its redevelopment. This very advantageously gives unhindered access to the bridge to be investigated without inconvenience to the public or, for example, significant costs in rerouting traffic or travel to and installation of equipment at a remote site. The work planned involves close cooperation between staff at NPL, funded by the National Measurement System and by the DIUS working in conjunction with academics at City University and supported and advised by relevant industries, involving both the construction industry and a fibre optic sensor manufacturer. This work planned is to be carried out in collaboration with a major project supported by the Department of Industry, Universities and Skills (DIUS / the successor to DTI): Project AM14: Enabling the Next Generation of Structural Health Monitoring (SHM): Demonstrator, Validation and Best Practice by widening the scope of the entire study to include the input from City University and its expertise on fibre optic sensors. This aspect had not been included in the original DIUS-funded programme and the raison-d'tre for so doing arose from a recent opportunistic contact between staff at NPL and City University. Thus this specific application to EPSRC is for funding support for a small part of the planned work overall / for the direct, additional costs of the academic involvement in the project. It should be stressed that this is an application which if not supported at this time cannot be resubmitted in six months time: the opportunity to carry out these tests will have gone as by then the timescale for the work, in light of the demolition schedule, will have passed.

我们目前的大部分基础设施都是由混凝土等现代材料建造的，即使在设计寿命相对较短的时间内投入使用，也需要进行大量维修。目前，仅英国每年就花费约 6 亿美元用于混凝土基础设施的维修和维护，这一数字是发达国家的数倍。适用性和整个生命周期的性能对于有效使用至关重要，对此类结构的长期监测对于确保完整的结构能力、最大限度地减少公众风险并物有所值至关重要。例如，轻质、耐用材料的进步被视为未来可持续发展的关键，使用高度耐用的轻质、低能耗混凝土，可用于新型柔性混凝土拱门和其他预制产品，并融入先进的监控系统。然而，为了更全面地了解使用此类材料为未来创建更好的结构的需求和挑战（并允许在其使用寿命期间更好地评估现有结构），需要开发和广泛使用可以安装和使用的有效监测系统，以提供可靠和信息丰富的数据，并得到行业的信任。因此，该项目被设计为一项为期 12 个月的短期真正跨学科研究，以交叉比较围绕几种结构监测互补技术的安装、使用、数据采集和性能评估的问题。独特的是，应用程序和时间范围是由一系列机会主义环境决定的，允许对特丁顿国家物理实验室 (NPL) 场地上的人行桥进行“测试至破坏”，作为其重建的一部分。这非常有利地允许不受阻碍地进入待调查的桥梁，而不会给公众带来不便，或者例如在改变交通路线或前往远程地点以及在远程地点安装设备方面产生巨大的成本。计划中的工作需要 NPL 工作人员之间的密切合作，由国家测量系统和 DIUS 资助，并与城市大学的学者合作，并得到相关行业（包括建筑行业和光纤传感器制造商）的支持和建议。计划的这项工作将与工业、大学和技能部（DIUS/DTI 的后继者）支持的一个重大项目合作进行：AM14 项目：实现下一代结构健康监测（SHM）：演示、验证和最佳实践，通过扩大整个研究的范围，纳入城市大学的投入及其在光纤传感器方面的专业知识。这方面并未包含在最初的 DIUS 资助项目中，这样做的理由源于最近 NPL 和城市大学工作人员之间的一次机会主义接触。因此，向 EPSRC 提出的这一具体申请是为总体计划工作的一小部分提供资金支持/学术参与该项目的直接额外费用。应该强调的是，如果目前不支持该申请，则无法在六个月内重新提交：进行这些测试的机会将消失，因为届时根据拆除时间表，工作时间表将已经过去。