Cost-effective Rehabilitation of Civil Infrastructure using Limited Sensors

使用有限的传感器经济高效地修复民用基础设施

• 批准号: RGPIN-2015-06157
• 负责人: Sadhu, Ayan
• 金额: $ 1.75万
• 依托单位: Lakehead University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=636505
• 关键词: Cost; effective; Rehabilitation; Civil; Infrastructure

Even the best-designed, most carefully built structures, such as buildings and bridges, eventually weaken. Whether a structure fails over time due to environmental conditions or use, or suddenly, because of a natural disaster such as an earthquake or strong wind, failure has significant human and societal consequences. Detecting damage while a structure is in use both helps avoid safety risks and minimizes the economic costs of suspending access to assess damage. Recently, vibration based damage detection (VBDD) methods, an offshoot of structural health monitoring, have shown promise in efforts to rehabilitate civil infrastructure. In VBDD, the presence of damage and its severity in a structure is assessed through detecting unusual symptoms in vibration measurements, and then rehabilitation is undertaken using appropriate decision making tools. However, because of the high cost of sensors and their installation issues, it is not always feasible to install sensors at every critical location in a large-scale structure. The proposed research will develop smart and cost-effective technology to perform early damage diagnosis and rehabilitation using limited numbers of vibration sensors.

即使是设计得最好、建造得最仔细的结构，如建筑物和桥梁，最终也会削弱。无论结构是由于环境条件或使用而随着时间的推移而失效，还是由于地震或强风等自然灾害而突然失效，失效都会对人类和社会产生重大影响。在结构使用中检测损坏既有助于避免安全风险，又能最大限度地减少暂停访问以评估损坏的经济成本。最近，基于振动的损伤检测（VBDD）方法，结构健康监测的一个分支，已显示出承诺，在努力恢复民用基础设施。在VBDD中，通过检测振动测量中的异常症状来评估结构中损坏的存在及其严重程度，然后使用适当的决策工具进行修复。然而，由于传感器的高成本及其安装问题，在大型结构中的每个关键位置安装传感器并不总是可行的。拟议的研究将开发智能和具有成本效益的技术，使用有限数量的振动传感器进行早期损伤诊断和康复。