Comfort level identification for irregular multi-storey building

In this article, the system identification approach is being used to identify the vertical frequencies of the top storey in a multi-storey building prefabricated from reinforced concrete in Stockholm. Before building construction, detailed investigation indicated that the building will not be affected by train vibrations from the nearby railway yard. After building completion, disturbing vibrations were observed in the building. Three measurement types, namely, ambient vibration test, forced vibration test on the rails, and forced vibration test, have been performed in order to specify the probable reasons for these vibrations.