Abstract

Abstract The paper describes an experiment involving a comparison of a few selected techniques for measuring the displacements of points on the span and pylon of the large cable-stayed bridge. It presents the measuring equipment and the process of static and dynamic tests. The results obtained from several measuring methods including the interferometric radar were compared and summarised. The experiment showed that in the case of large bridges, like tested cable-stayed structure, the best method is non-contact measurements like interferometric radar which is the least sensitive to the distance from a target. It allows the use of higher sampling frequency and at the same time requires relatively little preparation work.

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