Abstract
A new measurement method with GPS was proposed to measure the suspension bridge girder displacements, and field measurements were carried out. The semi-static displacement was success-fully obtained and corresponded to the wind tunnel test and the FEM analysis. As for the fluctuating displacement component, power spectrums of GPS data agreed well with acceleration data, FEM and the bridge dynamic test, besides the GPS data corresponded to the acceleration data. The gust response estimated by the analysis was correlated with the GPS data but scattered. This method is proved to be useful for semi-static and dynamic measurements of long-span bridge girder displacements.
