BENCHMARK OF UNCERTAINTIES IN STRUCTURAL HEALTH MONITORING OF BRIDGES
With recent developments on advanced communication network, it is now possible to develop structural health monitoring systems for on-line monitoring of large infrastructure networks. However, a critical challenge before practical application of vibration- based structural health monitoring techniques can be realized in the field is the inherent variability and uncertainties associated with the monitoring data linked to fluctuations in the environment and other factors associated with operation of the structure. This paper presents results from a benchmark study on the characteristics of variability from a long-term monitoring project of the Confederation Bridge in Canada. Using actual field monitoring data, a data variability or uncertainty model has been developed. Implications of the data variability on structural condition assessment of bridges are investigated. The results show that use of multiple independent datasets from long-term continuous monitoring system can overcome the challenge and lead to practical application of structural health monitoring techniques in realistic assessment of bridges in the field.
David T.Lau A. Londono
Dept. of Civil and Environmental Engineering, Carleton University, Canada Dept. of Civil and Environmental Engineering, Carleton University
国际会议
长沙
英文
33-45
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）