WAVELET TRANSFORM BASED HYBRID DAMAGE DETECTION METHOD FOR STRUCTURES
There are several objectives in damage identification,such as damage time,damage position and damage severity etc.The exact results would be achieved only if the full details about structures were available.However,it is almost impossible to grasp the details of the dynamic characteristics of super high-rise buildings.In view of the disadvantage,a new method was proposed in this paper that wavelet transform was combined with modal updating to identify damages.Damage information would be achieved without too much information about structural properties if the new method was employed.The damage time would be obtained through discrete wavelet transform,and the damage position would be obtained through the distribution of wavelet spikes.And the change of stiffness would be reflected through continuous wavelet transform,which is helpful to observe the time-varying property of the structure.Finally,damage severity would be determined by importing mode information of the structure after damaged into the procedure of modal updating.
Damage identification super high-rise building wavelet analysis modal updating
Xin Zhao Wenjian Yang
Shanghai Institute of Disaster Prevention and Relief, Shanghai 200092, P.R.China ;Tongji Architectur Department of Building Engineering, Tongji University, Shanghai 200092, P.R.China
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
1539-1546
2012-11-17（万方平台首次上网日期，不代表论文的发表时间）