Abstract: With the sluice pier of Xinzhou hydraulic project as an engineering background, the vibration signals of several observation points were acquired through pier dynamic characteristics test. In light of low signaltonoise ratio and incomplete frequency component of a single measurement point, the vibration signals from several measuring points were fused into one signal through correlation function fusion algorithm. This signal could reflect the vibration signal of the overall structure accurately and fully. By comparing the results of signal frequency identification before and after the fusion, we conclude that the multipoint fusion algorithm based on correlation function is feasible. Effective frequency of the structure submerged in noise could be excavated very well. Finally, It povides important basis for identifying modal parameters of the structure.

Key words: sluice pier, multiple observation points, information fusion, correlation function, vibration response