Fostering Structural Health Monitoring of Existing Infrastructures by Coupling Damage Cluster Analysis and Scanning Laser Doppler Vibrometry

通过耦合损伤聚类分析和扫描激光多普勒测振法​​促进现有基础设施的结构健康监测

• 批准号: RTI-2023-00249
• 负责人: Sorelli, Luca
• 金额: $ 10.93万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=753872
• 关键词: Fostering; Structural; Health; Monitoring; Existing

Considering the age of the infrastructure in Canada and Quebec, the maintenance cost of our aging infrastructure is an impelling situation. Regrettably, bridge maintenance plans are affected by late reparations which are costly and often ineffective. The main challenge is to detect damage at the earliest possible stage to maximize the life extension and to avoid late costly reparations. The present NSERC RTI grant application aims at developing a groundbreaking bridge-diagnostic tool that couples advanced statistical damage detection methods and a cutting-edge sensor technology. The required Scanning Laser Doppler Vibrometer (SLDV) instrument is today essential for achieving the following objectives: 1\ Develop a cutting-edge and highly accurate damage detection methods based on curvature changes of existing structures, herein called SLDV-HSM. This will foster SHM technique by reducing the false indication of damage and better estimating the optimal time of rehabilitation. 2\ Apply the SLDV-SHM technique not only for prevention of existing bridges, but also for following up the post-reparation performances. For instance, we will apply the developed SLDV-SHM technique for following up the structural behavior of bridges strengthened by modern strengthening techniques such as R-UHPFRC overlays (REF) to maximize the lifetime gain. 3\ Train HPQ and engineers on groundbreaking SHM techniques in the maintenance of the aging infrastructure of Quebec and Canada. 4\ Enhance current practices of SHM technique in Canada by undertaking pilot projects with the structural division of the City of Quebec and the Ministry of Transport of Quebec.

考虑到加拿大和魁北克基础设施的老化程度，老化基础设施的维护成本是一个令人瞩目的情况。遗憾的是，桥梁维护计划受到后期修复的影响，这些修复成本高昂且往往无效。主要挑战是尽早发现损坏，以最大限度地延长寿命并避免后期昂贵的修复。目前的 NSERC RTI 拨款申请旨在开发一种突破性的桥梁诊断工具，将先进的统计损伤检测方法和尖端传感器技术结合起来。 如今，所需的扫描激光多普勒测振仪 (SLDV) 仪器对于实现以下目标至关重要： 1\ 基于现有结构曲率变化开发尖端且高精度的损伤检测方法，本文称为 SLDV-HSM。这将通过减少错误的损伤指示并更好地估计最佳康复时间来促进 SHM 技术。 2\ 应用SLDV-SHM技术不仅可以用于现有桥梁的预防，还可以用于跟踪修复后的性能。例如，我们将应用开发的 SLDV-SHM 技术来跟踪通过 R-UHPFRC 覆盖层 (REF) 等现代加固技术加固的桥梁的结构行为，以最大限度地提高寿命增益。 3\ 对 HPQ 和工程师进行关于维护魁北克和加拿大老化基础设施的突破性 SHM 技术的培训。 4\ 通过与魁北克市结构部门和魁北克交通部开展试点项目，加强加拿大当前健康管理技术的实践。