Continuous monitoring of a civil structure

Seismic Structural Health Monitoring (S2HM) allows the continuous evaluation of engineering structures to estimate their safety and make real-time recommendations for improvement through data analysis and mathematical models. First time in Colombia a continuous monitoring network with an academic purpose has been deployed in a 14-story ecofriendly steel-frame building in downtown Bogota. Six 3-component accelerometers started recording in June 2019. As an initial attempt to understand the building''s response with only 25 days of continuously recorded data the anthropogenic behavior from the ambient vibration-based data was analyzed.Then following the deconvolution-based seismic interferometry approach proposed by Prieto et al. 2010 for a 225 daylong monitoring campaign the Impulse Response Function (IRF) was estimated from 2 different sources of data: 225 days of continuously recorded data and 49 registered earthquakes both used as an input in the velocity variation measurements using a stretching technique. A remarkable M6 earthquake occurred on December 24 2019 in Mesetas Meta yielding a significant change in the building''s response noticed in both sets of data.