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

基本信息

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

项目摘要

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的基础设施的年龄，我们老化的基础设施的维护成本是一种令人难以置信的情况。遗憾的是，桥梁维护计划受到较晚赔偿的影响，这些赔偿金昂贵且常常无效。主要的挑战是在最早的阶段发现损害，以最大程度地提高寿命延长并避免迟到的昂贵赔偿。目前的NSERC RTI赠款应用程序旨在开发一种开创性的桥梁诊断工具，该工具将高级统计损伤检测方法和尖端传感器技术融合在一起。如今，所需的扫描激光多普勒振动仪（SLDV）仪器对于实现以下目标至关重要：1 \基于现有结构的曲率变化，开发了一种尖端且高度准确的损伤检测方法，此处称为SLDV-HSM。这将通过减少损害的虚假指示并更好地估算最佳康复时间来促进SHM技术。 2 \不仅将SLDV-SHM技术应用于预防现有的桥梁，而且还用于跟进夺回后的性能。例如，我们将应用开发的SLDV-SHM技术来跟踪通过现代加强技术（例如R-UHPFRC叠加层（REF））加强桥梁的结构行为，以最大程度地提高终身增益。 3 \ Train HPQ和工程师在维持魁北克和加拿大老化基础设施的开创性SHM技术方面。 4 \通过在魁北克市和魁北克运输部的结构部门进行试点项目，从而增强了加拿大SHM技术的当前实践。