10 am Friday 30th October
Digital technologies for post-earthquake assessment and reconnaissance
Following an earthquake, there is a need to rapidly collect perishable data to evaluate the seismic performance of structures and aid in decision making regarding structural integrity and safety. Traditional reconnaissance methods, such as visual inspection and photographing of damage by individual researchers, can be time consuming and dangerous, particularly during periods of heightened aftershock activity. Newer reconnaissance techniques, such as terrestrial laser scanning, structure from motion (SfM) photogrammetry, and unmanned aerial systems photography/videography, hold substantial promise to mitigate the aforementioned shortcomings of traditional post-earthquake reconnaissance methods. However, these technologies have been minimally exploited relative to their potential.
This talk explores the capabilities and limitations of these technologies with application to a case study consisting of a reinforced concrete building damaged during the 2016 Kaikōura New Zealand Earthquake. The structure was extensively surveyed using several state-of-the-art methodologies to document the severity and distribution of damage resulting from the earthquake. Procedures and challenges to combine data to create a detailed 3D model from the different survey methods (e.g. 3D laser scans and SfM/MVS) are presented. These methods provide significant promise for enabling detailed post-earthquake reconnaissance for the New Zealand earthquake engineering research community.
For details on how to join the seminar – return to the 2020 Seminar series home page link