STRUCTURAL DAMAGE IDENTIFICATION OF MUNICIPAL BRIDGES USING STRAIN FREQUENCY RESPONSE FUNCTION
A method for the localization and assessment of damage is presented in this study.The method is based on the use of Strain Frequency Response Function (SFRF) data sensitivities to changes in Youngs modulus.With these sensitivities,differences in the dynamical behavior of the structure in its undamaged and damaged conditions can be translated into damage information.Numerically generated data,from a simple-supported plane,are used for better demonstration.Results illustrate that the SFRF curvature ratio change is sensitive to damage than three of the most referenced methods on literature,modal shape,modal strain and FRF curvature.The presented method is simple and robust in locating single or multiple damages as well as identifying damage severity for its less of sensitivity to the measurement errors,however,it is influenced by the frequency range to some extent.
Structural damage identification strain frequency response function
Zengguo Jiang Zhen Zhang Bo Chen
School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, P.R.Chin Department of Civil Engineering, National University of Singapore, Singapore Key Laboratory of Roadway Bridge and Structural Engineering, Wuhan University of Technology, Wuhan,
国际会议
The Twelfth International Symposium on Structural Engineering (第十二届结构工程国际研讨会)
武汉
英文
1535-1538
2012-11-17（万方平台首次上网日期，不代表论文的发表时间）