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A framework for assessing the value of information for health monitoring of scoured bridges
Journal of Civil Structural Health Monitoring ( IF 4.4 ) Pub Date : 2020-04-07 , DOI: 10.1007/s13349-020-00398-0
Pier Francesco Giordano , Luke J. Prendergast , Maria Pina Limongelli

It is generally accepted that climate change is leading to increased frequency of extreme weather events worldwide, and this is placing heavier demands on an already aging infrastructure-network. Bridges are particularly vulnerable infrastructure assets that are prone to damage or failure from climate-related actions. In particular, bridges over waterways can be adversely affected by flooding, specifically the washing away of foundation soils, a mechanism known as scour erosion. Scour is the leading cause of failure for bridges with foundations in water as it can rapidly compromise foundation stiffness often resulting in unacceptable movements or even collapse. There is growing interest among asset managers in applying health monitoring approaches to assess the real-time performance of bridges under damaging actions, including scour. Sensor-based approaches involve the acquisition of data such as dynamic measurements, which can be used to infer the existence of scour or other damage without the laborious requirements of undertaking visual inspections. In this paper, a framework is proposed to assess the benefit obtained from health monitoring systems as compared to the scenario where no monitoring system is employed on a bridge, to ascertain how useful these systems are at assisting decision-making. Decisions typically relate to the implementation of traffic restrictions or even partial or complete bridge closure in the event of damage being detected, which has associated consequences for a network. A case study is presented to demonstrate the approach postulated in this paper.

中文翻译:

评估信息的价值的框架对冲刷的桥梁进行健康监测

人们普遍认为,气候变化导致世界范围内极端天气事件的发生频率增加,这对已经老化的基础设施网络提出了更高的要求。桥梁是特别脆弱的基础设施资产,易于因气候相关行动而损坏或失效。特别是,洪水,特别是冲刷地基土,可能会冲刷水道,从而对水路桥梁造成不利影响。冲刷是水中带有基础的桥梁失效的主要原因,因为它会迅速损害基础的刚度,经常导致无法接受的运动甚至塌陷。资产管理者对使用健康监控方法来评估桥梁(包括冲刷)在破坏性行为下的实时性能的兴趣与日俱增。基于传感器的方法涉及诸如动态测量等数据的获取,这些数据可用于推断冲刷或其他损坏的存在,而无需进行目视检查的繁重需求。在本文中,提出了一个框架来评估与没有在桥梁上使用监视系统的情况相比,从健康监视系统获得的收益,以确定这些系统在辅助决策方面的用处。决策通常涉及流量限制的实施,或者在检测到损坏的情况下甚至部分或完全关闭桥,这会对网络产生相关影响。提出了一个案例研究,以证明本文假设的方法。可用于推断冲刷或其他损坏的存在,而无需进行目视检查的辛苦要求。在本文中,提出了一个框架来评估与没有在桥梁上使用监视系统的情况相比,从健康监视系统获得的收益,以确定这些系统在辅助决策方面的用处。决策通常涉及流量限制的实施,或者在检测到损坏的情况下甚至部分或完全关闭桥,这会对网络产生相关影响。提出了一个案例研究,以证明本文假设的方法。可用于推断冲刷或其他损坏的存在,而无需进行目视检查的辛苦要求。在本文中,提出了一个框架来评估与没有在桥梁上使用监视系统的情况相比,从健康监视系统获得的收益,以确定这些系统在辅助决策方面的用处。决策通常涉及流量限制的实施,或者在检测到损坏的情况下甚至部分或完全关闭桥,这会对网络产生相关影响。提出了一个案例研究,以证明本文假设的方法。与没有在桥梁上使用监视系统的情况相比,提出了一个框架来评估从健康监视系统获得的收益,以确定这些系统在辅助决策方面的用处。决策通常涉及流量限制的实施,或者在检测到损坏的情况下甚至部分或完全关闭桥,这会对网络产生相关影响。提出了一个案例研究,以证明本文假设的方法。与没有在桥梁上使用监视系统的情况相比,提出了一个框架来评估从健康监视系统获得的收益,以确定这些系统在辅助决策方面的用处。决策通常涉及流量限制的实施,或者在检测到损坏的情况下甚至部分或完全关闭桥,这会对网络产生相关影响。提出了一个案例研究,以证明本文假设的方法。这会对网络产生相关影响。提出了一个案例研究,以证明本文假设的方法。这会对网络产生相关影响。提出了一个案例研究,以证明本文假设的方法。
更新日期:2020-04-07
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