Investigation of structure deformation using a 3D laser scanning technique

Abstract

Structure deformation monitoring problem is widely discussed but not fully solved problem. It is possible to indentify problematic issues such as the particularity of the data, measurement speed, and the reliability of results. Traditionally, building movements are analyzed using precision levels and tachometers or other sensors. Small scale deformation monitoring using terrestrial laser scanning is gaining considerable attention mainly due to the high spatial resolution of the acquired data. This article is focuses on 3D laser scanning technique usage in building deformation monitoring. The comparison between 3D laser scanning and traditional monitoring results are compared and presented. Monitoring of structure over a period of time was also performed using both 3D laser scanning and traditional surveying techniques. Using 3D scanner data control could be extended to the whole structure instead of being limited to a few points. The results of this work indicates a strong potential of 3D laser scanning technique for deformation monitoring, however some issues influencing the feasibility of laser scanning for deformation monitoring also considered.