Geodetic Measurement of Vertical Displacements (Illustrated with the Slovenian Viaduct)

摘要

Today there are a lot of sophisticated methods to measure and analyse a bridge during load tests as a GPS, photogrammetric measurements, laser scanning, etc., The use of an classical techniques as trigonometric hights is still good enough for most demanding field observations. In practice control measurements are performed with the help of geodetic measurements, of which the basic goal is to capture any geometric changes in the measured object, or its displacements and deformations are found. In this article the use of trigonometric hights during a load test on the biggest Slovenian viaduct "Crni Kal" is introduced, displacement measurements on the viaduct and an analysis of results, with particular stress on the accuracy of the calculations.