Keynote and Invited Speakers

"Deformation measurements of large-scale experiments with laser scanning and laser tracking" Prof. Dr.-Ing. Ingo Neumann Geodetic Institute Hanover, Leibniz University of Hanover, Germany

The infrastructural challenges for society increase visibly. On the one hand, increasingly high speeds, larger easement entries due to transportation means and more difficult framework conditions for planning have to be met with new construction projects. On the other hand, large parts of the infrastructure reach their limit loads because of aging building fabric and increasing traffic load. If and for how long the operation of these structures is still possible cannot always be assessed by means of physical modeling of their behaviors. For this reason, experiments are carried out, both for existing and new infrastructure buildings, to better understand the loading capacity and the response to exterior influence factors.

In this talk, contributions of geodesy to the metrological survey of deformations in some large-scale experiments unique throughout Germany and possibly worldwide are presented. For this purpose, special emphasis is given to high-accuracy and spatially as well as temporally high-resolution survey/acquisition. The pointwise highly accurate (sigma < 0.1mm) survey of large test objects is highlighted by means of laser tracking. The observations of large-scale and quick responses of the buildings in the low millimeter range are presented by means of terrestrial laser scanning. This presentation concludes by briefly treating the characteristic of the point clouds acquired by both measurement procedures and by demonstrating the further usage of the data for an improved understanding of the model. The presented concepts and methods can generally be transferred to other typical monitoring projects.