Identification of a load model for crowd-rhythmic activities based on acceleration measurements of a building floor

The floors of modern buildings are prone to excessive vibrations induced by human actions, especially when a group people perform rhythmic activities in coordinated manner. A reliable model for this load case, taking into account the experimentally observed effect, is thus essential serviceability assessment such structures. In paper, frequency-domain either single person or multiple individuals was established two activities. parameters were determined an indirect identification method from acceleration responses. An extensive experimental test campaign conducted on steel–concrete composite floor order provide input data identification, including modal analysis and human-induced vibration tests up 32 individuals. first single-person model. Root Mean Square (RMS) forces then calculated identified models, corresponding coordination factors as function crowd size suggested. decreasing exponential obtained 8 persons skipping 12 jumping, followed constant plateau larger groups. proposed models involve global factor be used conjunction with jumping comparison three existing against performed. revealed accuracy suggested respect forces, whereas differences found jumping.