Abstract The deformation sinals of pylons were extracted and analyzed with Singular Spectrum Analysis（SSA）combined with wavelet analysis method.The optimal window length was selected according to the first and second principal component reconstructed with the original series minimum mean square error，combines with experience criteria.A method was proposed based on using peaks of curvature spectrum of singular value to determine the effective principal component and overcome the previously established subjectivity.Periodic component extracted combined with wavelet analysis shows that deformation of the pylons has the characteristics of multiperiod.The oscillation frequency of north and south pylon in X，Y direction is consistent in the main period time scales，and there is no discord oscillation.
Cao Qi,Yue Dongjie,Wang Hai et al. EXTRACTION AND ANALYSIS OF DEFORMATION SIGNALS OF
BRIDGE PYLONS BASED ON SINGULAR SPECTRUM ANALYSIS[J]. jgg, 2014, 34(5): 144-150.
Cao Qi,Yue Dongjie,Wang Hai et al. EXTRACTION AND ANALYSIS OF DEFORMATION SIGNALS OF
BRIDGE PYLONS BASED ON SINGULAR SPECTRUM ANALYSIS[J]. jgg, 2014, 34(5): 144-150.
