On the basis of obtaining the dynamic response information of tower structure under environment excitation
the wavelet transform is applied to detecting the structure damage position.But
the Gibbs fluctuation of wavelet detail information responding to every damage position of tower structure with multi-damage influences each other
which results in the difficulty to identify multi-damage position.To eliminate this coupling influence
the truncation of the dynamic response information of the damage position is developed to make different damage positions in different information range.Moreover
the truncated dynamic information is extended
and then every damage position of tower structure is identified.To verify the effects of the method
the examples were conducted and the results indicate that the proposed method has the validity and the reliability to detect the multi-position damages.
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