AN INVESTIGATION OF SENSITIVITY AND RELIABILITY OF VARIOUS VIBRATION PARAMETERS FOR STRUCTURE CONDITION MONITORING
Many structural vibration parameters such as frequencies, frequency response functions, mode shapes and their derivatives, MAC and COMAC values, damping ratios, flexibilities, response power spectral densities, root mean of the frequency response functions, etc have been proposed and used for structural condition monitoring and damage identification. This paper presents results of a comparative study of the sensitivity and reliability of these parameters in identifying the changes in a two-span continuous reinforced concrete slab. Vibration tests were carried out to estimate these vibration parameters of the slab progressively at various loading and damage levels. It was found that the normalized modal flexibility is the best parameter, among all the parameters considered in this study, for determining the location of the damage, whereas the frequency change is the simplest parameter to monitor the condition deterioration.
Hong Hao Andrew J. Deeks Yong Xia Xin-Qun Zhu
School of Civil and Resource Engineering, the University of Western Australia 35 Stirling Highway, C Department of Civil and Structural Engineering The Hong Kong Polytechnic University, Hung Horn, Kowl
国际会议
长沙
英文
155-161
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）